In eukaryotic cells, genes that are coordinately activated by a particular stimulus generally:
b. have short regulatory sequences in common in their promoters or enhancers and
c. are recognized by the same transcriptional activators.
What is transcription?The biological process through which a cell creates an RNA copy of a portion of DNA. The genetic material required to build proteins in a cell is carried by this RNA copy, known as messenger RNA (mRNA).
A strand of DNA's information gets replicated into a fresh messenger RNA molecule through a process called transcription (mRNA). DNA preserves genetic material as a reference or template securely and permanently in the cell nucleus.
Prokaryotes' cytoplasm and eukaryotes' nuclei are where the transcription process occurs. An RNA (mRNA) molecule is created using a template made of DNA. A complementary DNA and mRNA strand is created during transcription.
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The complete question is as follows:
In eukaryotic cells, genes that are coordinately activated by a particular stimulus generally ____.
A. are physically clustered in the same operon
B. have short regulatory sequences in common in their promoters or enhancers
C. are recognized by the same transcriptional activators
D. Both b and c.
E. All of the above.
cephalization process. what is? primary and secondary vesicles and the adults brain structures associated with these structures
Cephalization is the process of increasing the complexity and complexity of the brain in animals, resulting in the formation of the head. It is an evolutionary process that occurs in animals, allowing them to develop new structures and behaviors.
These changes can be seen in the development of more complex eyes, ears, and other sensory organs, as well as in the development of more complex motor skills. Cephalization is the result of changes in both the body and the brain.
The primary and secondary vesicles are two important structures associated with cephalization. The primary vesicle is the precursor to the adult brain, and it forms during embryonic development. It contains the brain stem, the cerebellum, and the thalamus. The secondary vesicle is the developing forebrain and it contains the telencephalon, which includes the hippocampus, the amygdala, and the neocortex.
In adults, the structures associated with cephalization are the cortex, the thalamus, the hippocampus, the amygdala, and the hypothalamus. The cortex is the outermost layer of the brain and plays a role in higher cognitive functions, including language and decision-making. The thalamus is located deep inside the brain and is involved in sensory processing and motor control. The hippocampus is responsible for memory and learning, while the amygdala is involved in emotion and decision-making. The hypothalamus is involved in the regulation of hormones and other physiological functions.
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why are flexors and extensors considered antagonistic muscles? question 10 options: hypertrophy of one muscle group induces atrophy of the other muscle group. one muscle group exerts a pulling force while the other exerts a pushing force. both muscle groups exert only a pulling force when they contract, but they produce opposing movements of the joint. both muscle groups bend a limb at the joint, but each can only contract while the other extends.
Flexors and extensors are considered antagonistic muscles because they produce opposing movements of the joint.
When a flexor muscle contracts, it bends a limb at the joint, while an extensor muscle straightens the limb. For example, the biceps brachii muscle in the upper arm is a flexor, and it allows you to bend your elbow. The triceps brachii muscle in the upper arm is an extensor, and it allows you to straighten your elbow. When one muscle group contracts, the other must relax, in order for the joint to move in the desired direction. This is why they are called antagonistic muscles.
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FILL IN THE BLANK. __________ fats or lipids form animal body fat that is used for stored energy and insulation.
Answer:
Saturated
Explanation:
Saturated fats or lipids form animal body fat that is used for stored energy and insulation.
Pedigree project for biology family tree read attached for info!
Answer:
hey
Explanation:
Explain Cellular Respiration and its role in Matter and Energy Cycling. Include its Products and Reactants.
Organisms mix oxygen with food molecules, directing the chemical energy contained in these substances toward life-sustaining processes while excreting carbon dioxide and water as waste. This process is known as Cellular Respiration. Food broken down by organisms that do not require oxygen in the process is known as fermentation.
During cellular respiration, glucose (sugar) and oxygen mix to produce new products, including water and carbon dioxide molecules. Energy is created in the form of adenosine triphosphate (ATP), which can be utilized for other biological pathways, is created.
During this process, matter in the form of carbohydrates is changed into less complex forms, and chemical energy is liberated. The process of cellular respiration involves the cells taking in oxygen and exhaling carbon dioxide. Therefore in cellular respiration both energy and matter is linked.
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A field in New York State is mowed all summer long for a number of years. The field is
sold, and the new owner decides to stop mowing. Over a number of years, the ecosystem
begins to undergo ecological succession. After a series of different plant communities are
present, the area eventually becomes a stable forest ecosystem.
Describe how this forest ecosystem would respond to a natural disaster,
such as a flood, that resulted in the destruction of the plant community.
2pt
Where did the scientists who contributed to our scientific knowledge live?
Identify the correct statements regarding the use of stable oxygen isotopes in reconstructing ancient climates.
a. Oceanic microorganisms preserved in sea floor sediments or elsewhere can be analyzed to measure the ratio of 16O to 18O.
b. As global temperature varies, the amount of 18O in water changes in response.
c. Oxygen is incorporated into biological tissues of living organisms.
d. The ratio of 14C to 18O provides an estimate of global temperature.
The correct statements regarding the use of stable oxygen isotopes in reconstructing ancient climates are -
-The ratio of 16O to 18O can be determined by analyzing oceanic microorganisms that have been preserved in sea bottom sediments or elsewhere.
-The biological tissues of living things contain oxygen.
-As the earth's temperature fluctuates, so does the amount of 18O in water.
Atoms with different masses known as stable isotopes do not decay over time, making them non-radioactive. Three stable isotopes of the element oxygen (O), ¹⁸O, ¹⁷O, and ¹⁶O, exist in nature. Each of these oxygen isotopes has a nucleus made up of eight protons and either eight, nine, or ten neutrons. The majority of these stable isotopes, 16O, makes up 99.757% of all atoms on Earth, while 17O (0.038%) and 18O (0.0205%) are found in far lower proportions. Although there are 17 radioactively unstable isotopes of oxygen, 14 of which are radiogenic (formed by the radioactive decay of other atoms), each of these isotopes has a half-life of no more than two minutes.
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matter that organisms require for their life processes are called a. legumes. b. decomposers. c. fertilizers. d. nutrients.
The matter that organisms require for their life processes are called Nutrients.
Nutrients are the substances that organisms need for their life processes. Several dozen nutrients are required by organisms. Nitrogen, carbon, and phosphorus are examples of macronutrients, which are required in relatively large amounts. Micronutrients are nutrients that are required in small amounts.
Nutrients are chemical compounds found in food that the body uses to function properly and stay healthy. Instances usually involve proteins, fats, carbohydrates, vitamins, and minerals. Nutrients are indeed the energy we need to facilitate the body to metabolize food and afterward put this into use by the body to construct and repair cells and tissue, which is primarily our metabolism.
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What is the difference between a genus and a family?
The taxonomic (ordering) ranks used for the biological classification of organisms based on their traits and evolutionary links are a key difference between genus and family.
Difference between Genus and Family:According to taxonomy:
In contrast, the genus is ranked above species and below families in the taxonomical classification. The genus is the second most important and fundamental unit and level in the systematic classification of organisms after species. From this point on, the diversity increases.
Arrangement:
The taxonomic hierarchy places genus below family; as a result, a genus is more specific and less comprehensive than a family, which categorizes species according to a more unified set of traits.
No of Organisms:
Genus has fewer organisms because it is ranked lower in the hierarchy than family.
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a codon is a sequence of three nucleotides that specifies a particular amino acid. where do codons occur?
Codons are units of genomic information made up of three nucleotides (trinucleotides) in DNA or RNA that code for a specific amino acid or indicate the end of protein production (stop signals).
How is a nucleotide formed?A carbohydrate residue that is joined by a -D-glycosidic bond to a heterocyclic base and a phosphate molecule at C-5' (compounds with the -oh group at C-3' are also known) forms a nucleotide. Nucleosides are the chemicals produced when the phosphate group is taken out of nucleotides.
Is DNA a nucleotide or a protein?DNA, however, is not a molecule. Long strands of nucleotides make up DNA. Three parts—a phosphate group, a simple sugar, and a four nitrogenous up each nucleotide molecule. The options for the nitrogenous base are cytosine, guanine, pyrimidines, or adenine.
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The theory of evolution by natural selection means that what is changing over time?
ANSWER:
When any specific species undergoes natural selection, they are essentially slowly adapting to their environment. Giraffes, for example, have very long necks so that they can easily reach the leaves of a tree. In the past, giraffes may not have had long necks, but since their environment has changed since then, they have adapted.
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large mechanoreceptor axons from the face region project to the cerebrum via: a) spinal cord nerves b) trigeminal nerve c) dorsal column d) nasal cavity
Large mechanoreceptor axons from face region projects to the cerebrum through : b) trigeminal nerve.
What is trigeminal nerve?The trigeminal nerve is that part of the nervous system which is responsible for sending pain, touch and temperature sensations from face to your brain. It's a large, three-part nerve in head that provides sensation. One section which is called the mandibular nerve involves motor function to help in chewing and swallowing.
The trigeminal nerve is one set of the cranial nerves in the head and it is the nerve that is responsible for providing sensation to the face. One trigeminal nerve is to the right side of the head, while the other is the left.
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Which of the following is not a hotspot of biodiversity?AIndo-BurmaBHimalayaCGangetic plainDWestern Ghats and Sri Lanka
Gangetic plain is not a hotspot of biodiversity. A biogeographic area known as a biodiversity hotspot has a high concentration of species that are threatened by human habitation.
In two writings that were published in The Environmentalist in 1988 and 1990, Norman Myers initially introduced the idea. Myers and others developed the idea after giving it a lot of thought, and in 2000 they both published "Hotspots: Earth's biodiversity Richest and Most Endangered Terrestrial Ecoregions" and a research in the journal Nature.
According to Myers' hotspot map from 2000, a location must have at least 1,500 indigenous vascular plant species (more than 0.5% of the world's total) and have lost at least 70% of its original primary vegetation in order to be classified as a biodiversity hotspot.
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Which of the following true for an offspring formed as a result of sexual reproduction? a. the offspring gets a full set of genes from the mother and fromthe father. b. the offspring gets half the genes from the mother and half the genes from the father. c. thee offspring gets all ofits genes from the father. d. the offspring gets a random mixture of genes from the mother and father. e. the offspring gets a random mixture from the mother
When gametes are formed in parents; each gamete has half the genetic material of the parent. When the gametes unite, the resulting offspring will receive half the genetic material of each parent. Thus, the correct answer for offspring formed as a result of sexual reproduction is option B.
When two gametes fuse together, a zygote is created. This zygote eventually develops into an organism made up of cells with two sets of chromosomes. Gametes, which are reproductive cells with one pair of chromosomes, include an egg or sperm. One sort of reproduction that includes this intricate life cycle is sexual reproduction (diploid). The number of chromosomal sets and how it varies during sexual reproduction are normal for mammals, but there are notable exceptions, especially in plants, fungi, and other eukaryotes.
Mammals, fungi, and plants are examples of multicellular eukaryotes that primarily reproduce sexually. Numerous eukaryotic unicellular organisms are capable of sexual reproduction.
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which of the following best explains the role of cell-to-cell communication during a response to an invasion of antigens? responses chemicals that are secreted from antigen-presenting cells then activate helper t cells. chemicals that are secreted from antigen-presenting cells then activate helper t cells. a macrophage cell engulfs a pathogen in the blood. a macrophage cell engulfs a pathogen in the blood. antigens attaching to receptors on memory b cells stimulate the memory b cells to become plasma cells. antigens attaching to receptors on memory b cells stimulate the memory b cells to become plasma cells. antigen-presenting cells engulf antigens at the first exposure.
The following best describes the role of cell-to-cell communication during a response to an invasion of antigens - d. Chemicals that are secreted from antigen-presenting cells then activate helper T cells.
Immune cells can interact with one another by directly attaching to receptors on their surfaces or by releasing substances that stimulate a response.
Immune cells, such as APCs, produce proteins known as cytokines and chemokines, which flow away and bind to the surface of a nearby or distant cell.
Antigens are processed by APCs and presented to T lymphocytes.
They bind to the antigen and activate t-cells, allowing them to quickly detect and destroy them by secreting chemicals.
As a result, the following best captures the role of cell-to-cell communication during an antigen invasion response - d. Helper T cells are activated by chemicals released by antigen-presenting cells.
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_______ are also known as the pressure reservoir of the cardiovascular system.
A) Veins
B) Venules
C) Capillaries
D) Arterioles
E) Arteries
Arteries are the blood vessels that are known as the pressure reservoir of the cardiovascular system.
Arteries are the type of blood vessels. These are responsible for carrying blood away from the heart. They usually transport the oxygenated blood to the whole body except when they transport to the lungs. Arteries involved in transport to the lungs carry deoxygenated blood.
Cardiovascular system is also called the circulatory system of the body. It is involved in the circulation of blood and various other substances through the blood. The organs involved in cardiovascular system are: heart, blood and the different blood vessels.
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explain how the presence or absence of inhibitors of cyclin-dependent kinases might play a role in normal cells becoming cancer cells.
Toxic effects can result from inhibitors of cell-cycle CDKs that stop the cycles of healthy cells. Since the activity of the CDKs is significantly higher in cancer cells than in non-transformed cells, CDK inhibitors may have a stronger impact on these cells.
When CDKs 1 and 2 are inhibited, normal cells are more likely to arrest than cancer cells are. They are not sensitive to DNA damage when the cells are arrested. While a cancer cell's arrest is less complete and the CDK inhibitor-DNA damaging agent combinations are still sensitive to DNA damage, it is possible to achieve a better arrest and shield a normal cell from DNA damage with CDK1/2 inhibition. Thus, the CDK DNA-damaging agent combinations may preferentially damage transformed cells over untransformed cells.Some transcriptional CDKs affect cancer cells very differently from normal cells. These CDKs regulate the expression of the genes necessary for the upkeep of the oncogenic state in cancer cells.
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The digestive tract is essentially one long tube. the order of the structures, beginning with the mouth, is?
From the mouth to the anus, the GI tract is made up of several hollow organs connected by a protracted, twisted tube.
The stomach, small intestine, large intestine, and anus are the hollow organs that make up the GI tract.
In the order in which they are joined, the organs that make up your GI tract are your mouth, esophagus, stomach, small intestine, large intestine, and anus.
consume food
Cut the food into small pieces.
Move the microscopic particles out of the digestive tract and the rest of the body to absorb nutrition into the body.
Remove waste, which is anything that your body cannot utilise.
The mouth is the beginning of the digestive system, which also consists of the pharynx, esophagus, stomach, small intestine, large intestine,
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Characteristic physical properties are properties that are independent of the size of the
sample substance. The measure of a characteristic physical property will remain the
same regardless of the amount of matter sampled. Which of the following properties is
not a characteristic physical property of matter?
A. Mass
B. Density
C. Thermal conductivity
D. Boiling point
Thermal conductivity is not a characteristic physical property of matter. So, the correct option is (C).
What is Physical Property?A physical property is defined as a property which is measurable, whose value describes the state of a physical system. There can be changes in the physical properties of a system that are used to describe its transitions between transient states.
Physical properties also known as observables which are not modal properties. It's measurement can change the arrangement of matter in a sample but not the structure of its molecules. A physical property involves a physical change but not a chemical change.
Examples of physical properties include mass, density, color, boiling point, temperature, and volume.
Thus, Thermal conductivity is not a characteristic physical property of matter. So, the correct option is (C).
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which genetics professional has the defined responsibility for overseeing the work in a cytogenetic laboratory?
Clinical laboratory geneticist professional has the defined responsibility for overseeing the work in a cytogenetic laboratory. Genetics is the study of genes and heredity, or how various DNA sequences can result in a child inheriting a particular trait or set of traits from one or both parents.
An individual gene is a piece of DNA that contains the instructions needed to put together one or more molecules that support biological function. The specialist clinical labs that conduct examinations for inherited and acquired genetic illnesses are managed by clinical laboratory geneticists. They are certified in clinical biochemical genetics, laboratory genetics and genomics (LGG), or both. A clinical geneticist is a doctor who specializes in treating persons with genetic disorders and their families. They work alongside genetic counselors to help patients, families, and medical professionals manage inherited illnesses.
The complete question is:
Which genetics professional has the defined responsibility for overseeing the work in a cytogenetic laboratory?
A. Clinical laboratory geneticist
B. Genetic laboratory technician
C. Cytogenetics technician
D. Medical geneticist
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You’re probably very familiar with many examples of acids and bases in your daily life. If you’ve eaten an orange, you know the sour taste of the citric acid in citrus fruits. And inside your own stomach, hydrochloric acid plays an important role in digestion. Coffee and battery acid are two more acidic substances found outside of the science lab that you’ve likely come across. Examples of bases include soaps, baking soda and laundry detergent. There are strong acids and weak acids, and there are strong bases and weak bases. Both strong bases and strong acids can be very dangerous to touch without gloves. But very weak acids and weak bases aren’t dangerous. Some can be handled and some even tasted.
The author of this passage would most likely agree with which of the following statements?
A
People should always wear gloves to touch bases.
B
Most people have only ever seen acid in a science lab.
C
Acids and bases are commonly used for many tasks in daily life.
D
Foods that are basic don’t have any particular taste.
the observable physical and biological differences between the male and female human reproduction systems are called
Sexual dimorphism is a term for the genotypic and phenotypic differences between males and females of the same species. Through the process of meiosis and fertilization (with rare exceptions), each individual is created with zero or one Y-chromosome.
The phenomenon of morphological differences between the sexes of the same animal and/or plant species, particularly those that are not directly related to reproduction, is known as sexual dimorphism. The majority of animals and some plants are afflicted by the sickness. Size, weight, color, markings, secondary sex features, and behavioral or cognitive traits are only a few examples of variations. Natural selection as well as sexual selection may have contributed to these alterations, which may or may not be significant. The opposite of monomorphism, which occurs when both biological sexes exhibit the identical traits, is dimorphism.
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ribosomes....................... a. are constructed from two parts b. are made of rrna. c. have two sites where trna and mrna are aligned. d. are found in the nucleus.
Ribosomes have two sites where tRNA and mRNA are aligned.
A ribosome is an intercellular structure manufactured from both RNA and protein, and it's far the website online of protein synthesis on mobile. The ribosome reads the messenger RNA (mRNA) sequence and translates that genetic code into a particular string of amino acids, which grow into long chains that fold to form proteins.
A ribosome functions as a micro-gadget for making proteins. Ribosomes are composed of special proteins and nucleic acids. the interpretation of statistics and the Linking of AMINO ACIDS are at the heart of the protein manufacturing manner.
Characteristic - Ribosomes are responsible for making protein via amino acids. The proteins created are important to mobile and organismal function. a few ribosomes are connected to the endoplasmic reticulum (hard ER), and others glide freely inside the cytoplasm.
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the ans stimulates smooth muscles, skeletal muscles and glands, whereas the somatic nervous system innervates skeletal muscles only.
The ans stimulates smooth muscles, skeletal muscles and glands, whereas the somatic nervous system innervates skeletal muscles only. This statement is false.
What is somatic nervous system?
The peripheral nervous system, which permeates practically every portion of your body, is divided into the somatic nervous system. This system's nerves transmit data from your senses to your brain. They also transmit orders from your brain to your muscles, allowing you to move. In order to carry out our daily activities, the somatic nervous system connects the central nervous system with organs and striated muscle. Additionally, the somatic nervous system is in charge of a particular class of reflexive muscle reactions.
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The ans stimulates smooth muscles, skeletal muscles and glands, whereas the somatic nervous system innervates skeletal muscles only. This statement is false.
What is somatic nervous system?The peripheral nervous system, which permeates practically every portion of your body, is divided into the somatic nervous system. This system's nerves transmit data from your senses to your brain.
They also transmit orders from your brain to your muscles, allowing you to move. In order to carry out our daily activities, the somatic nervous system connects the central nervous system with organs and striated muscle. Additionally, the somatic nervous system is in charge of a particular class of reflexive muscle reactions.
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Compare and contrast the following kingdom to each other: plant, animal, protist, and fungi
PLS AND THANK YOU <3
Answer:
For classification, the protists are divided into three groups: Animal-like protists, which are heterotrophs and have the ability to move. Plant-like protists, which are autotrophs that photosynthesize. Fungi-like protists, which are heterotrophs, and they have cells with cell walls and reproduce by forming spores
Explanation:
In the five-kingdom classification, organisms are divided into five kingdoms on the basis of certain characteristics such as cell structure, nutrition, reproduction, and their body organization.
What is Five-Kingdom Classification?The living organisms are classified into five different kingdoms which are Monera, Protista, Fungi, Plantae, and Animalia. This classification is based on certain characteristics such as cell structure, mode of nutrition, mode of reproduction and body organization of the organisms.
For the classification, Protists are divided into three major groups: Animal-like protists, the organisms with heterotrophic nutrition and the ability to move, Plant-like protists, which are autotrophs that can photosynthesize, and Fungi-like protists, which are heterotrophs, and have cells with cell walls and reproduce by forming spores.
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because the spinal nerves arise from fusion of the ventral and dorsal roots of the spinal cord, and contain both motor and sensory fibers, all spinal nerves are considered mixed nerves. group of answer choices true false
It is True that because the spinal nerves arise from the fusion of the ventral and dorsal roots of the spinal cord, and contain both motor and sensory fibers, all spinal nerves are considered mixed nerves.
The nerve fibers that give rise to each nerve are referred to as fila radicularia and originate from the spinal cord's posterior (dorsal) and anterior (ventral) roots. Interneuron connections connect the roots. A spinal nerve is made up of the root fibers joining together in the intervertebral foramina.
The nerves that act as both motor and sensory nerves are referred to as mixed nerves. They transform electrical impulses that travel from the brain to the body's muscles. In most cases, the mixed nerves send messages at a speed of 432 kilometers per hour or 120 meters per second.
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Which of the following is an example of gene flow?
1. The movement of people on Earth steadily increases and alters the course of human evolution.
2. An earthquake results in the formation of a canyon, splitting a population of toads apart.
3. A fire drastically reduces the size of a white-tailed deer population. The remaining individuals spread out throughout the remaining forest.
4. A small population of grasshoppers gets blown away and isolated during a storm. The gene pool of the new population is different from the original population.
An example of gene flow is the movement of people on Earth steadily increases and alters the course of human evolution. Thus, the correct option is A.
What is Gene flow?
Gene flow is also known as gene migration. It is the transfer of genes or the movement of genetic material from one population of a species to another population.
Migration of human beings from one geographical region to another leads to people of one race making relationships with the people of another race. A European person migrating to North America, and then getting married to a North American and then giving birth to an offspring which exhibits the traits of both a European and a North American is an example of gene flow.
Therefore, the correct option is A.
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how do the ommatidia of the compound eyes of arthropods differ from the image-forming eyes of vertebrates?
The eye lenses of vertebrates' eyes create images, but these complex eyes do not.
The individual photoreceptor units that are present in arthropods are called ommatidium, which are found in high numbers and exhibit photoreceptor cell behavior. Although their arrangement resembles that of vertebrate eyes (both sides of the head), compound eyes are fundamentally different from single chamber eyes due to their convex construction around the exterior of the animal's skull.
Although the image that compound eyes provide is not as sharp and detailed as a camera eye, they do have a significantly broader field of view, which is advantageous in flight. The ability to see all around aids spotting prey for flying predators like dragonflies. Many insects have UV vision, but we have not.
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which event occurs on the sarcolemma? acetylcholine production acetylcholine combining with receptor breakdown of acetylcholine release of acetylcholine
The sarcoplasmic reticulum's release of calcium ions is referred to as excitation. The propagation of action potentials along the sarcolemma is referred to as excitation in this context.
What function does the sarcolemma serve?The sarcolemma transmits neural excitatory impulses that cause muscle contraction in addition to maintaining the intracellular milieu, actively transporting substrates into the muscle cell, acting as a docking site for proteins originating from the basement membrane and cytoskeleton.
What are sarcoplasm and a sarcolemma?Muscle cell, like this. The sarcolemma, which covers muscle fibers, is a lining. Sarcoplasm is the name for the protoplasm found inside muscle fibers. Sarcoplasmic reticulum is the name for the endoplasmic reticulum found in muscle fiber.
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