A mutation is an alteration in the original DNA sequence. Option 3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
What is a mutation?A mutation is a stable and hereditably change in the genetic material.
Mutations alter DNI sequences and introduce new variants. Many of these variants are eliminated, but some of them might succeed and be incorporated in each individual, affecting the entire species.
They can be damaging or beneficial. These last mutations are the ones that have been selected by natural selection.
Different mutagenic agents cause changes in genetic information, increasing mutations over the normal level. They can change the bases sequences and bases pairing.
Mutations depend on each group's environment and its ecological pressures, and they accumulate in time. They are inherited to the followings generation and get to spread.
According to this framework, the correct option is 3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
If the analyzed chemical is a mutagen, then it will cause an alteration in the DNA sequence and this change -mutation- will pass to the following generations spreading in the population.
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A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in
the laboratory
Which statement best provides evidence that the substance is a mutagen?
The cells die within hours of being exposed to the chemical.The cells grow more quickly than those that were not exposed to the chemical.The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.The cells continue to divide at the same rate as before they were exposed to the chemical.Which of the following is the source of energy for the water cycle?
A. volcanic eruptions
B. winds
C. gravity
D. the sun
Microtearing that occurs during which muscle action is responsible for delayed onset muscle soreness (DOMS)? Eccentric Concentric Isometric Isotonic
Microtearing that occurs during which muscle action is responsible for delayed onset muscle soreness (DOMS) involves eccentric activities.
What are Eccentric activities?This activities involve the lengthening of the muscles during certain activities such as lowering into the bottom of a pushup etc.
This activities are usually slow which causes microtearing and delayed onset muscle soreness in individuals.
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Which synaptic connection would be most affected by the presence of a GABA antagonist in the cerebellum
The central nervous system (your brain and spinal cord) would be most affected by GABA antagonist.
What is GABA antagonist?In the neurological system, neurotransmitters act as chemical messengers.Neurons communicate with one another to transfer signals along the neurological systems, carrying messages.They may, for instance, send a message from your brain to your hand telling you to avoid danger or from your hand to your brain informing you that a pot is hot.GABA stops some nerve transmissions or signals since it is an inhibitory neurotransmitter.It stops neurons from being stimulated, which is how it works.This indicates that a neuron doesn't act on a message it receives along the way, preventing the message from being passed to other neurons. Functions:When a neuron receives messages, known as "action potentials," the message is transmitted to another neuron through a sequence of stages.However, GABA is present in between 30 and 40 percent of neurons.The GABAergic neurons are those. GABA is released into the synapses where the message is expected to be carried on when GABAergic neurons receive a message.The action potential's likelihood of spreading to neighboring neurons is decreased as a result of the release of GABA. Even while GABA activity only lasts for a few milliseconds, it has a big impact.It induces a soothing effect in the brain.This procedure enables the integration of sensory information in the spinal cord, enabling your nervous system to process and organize information coming from your eyes, ears, nose, and mouth.Learn more about GABA antagonist here:
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Which of the following is true regarding deductive reasoning but NOT inductive reasoning?
It begins with a theory.
It begins with a theory.
It is an open-ended approach.
It is an open-ended approach.
It begins with an observation.
It begins with an observation.
It results in a conclusion.
The following is true regarding deductive reasoning but NOT inductive reasoning it results in a conclusion. Thus, option "D" is correct.
What is deductive reasoning?In deductive reasoning , the researcher begins with a theory and uses research to test the theory.
In the deductive approach, the theory must be tested through the collection of significant facts that prove the theory is true. In the inductive approach, the researcher does many observations and collects data. With this data, the researcher constructs a theory to explain these facts.
Thus, option "D" is correct since in In deductive reasoning , the researcher begins with a theory and uses research to test the theory.
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The goal of a statement of purpose is:
Answer:
A statement of purpose's goal is to convince someone that you should be admitted to the program or be awarded a position.
Answer:
A statement of purpose's goal is to convince someone that you should be admitted to the program or be awarded a position.
If an animal has radial symmetry, what phylum is it classified to be?
A) Porifera
B) Platyhelminthes
C) Rotifera
D) Cnidaria
Answer:
D-Cnidaria
Explanation:
took the test
If a diploid cell has 12 chromosomes in prophase i, how many chromatids will the cell have at the completion of anaphase i and anaphase ii?
#1
always 12
#2
12 and 6
#3
36 and 24
#4
24 and 12
4) 24 and 12
What happens during anaphase I and anaphase II stage?One of the two cell divisions is meiosis. From a single parent cell, it generates four daughter cells. Each cell has half of the parent cell's chromosomes. Meiosis I and Meiosis II are the two primary mechanisms that cause meiosis. Four subdivisions make up each meiosis. In meiosis I, anaphase I takes place, and in meiosis II, anaphase II. The homologous chromosomes are pulled apart and moved to the opposite ends of the cell during anaphase I, whereas during anaphase II, the sister chromatids of each chromosome are separated and moved towards the poles. Additionally, anaphase I happens when a cell is in the diploid condition, but anaphase II happens when a cell is in haploid condition.
The cell has 12 chromosomes, after anaphase I stage each chromatid is considered a separate chromosome structure, hence there will be 24 chromosomes. After meiosis I is complete the number of chromosomes again become 12 because of the division of the nucleus.
At anaphase II, the sister chromatids are separated hence, the number of chromosomes remain 12.
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Consider a situation in which overharvesting causes the number of fish in a population to become drastically smaller, which causes genetic variation in that fish to decrease over a few generations. This is an example of: Group of answer choices
Answer:
bottleneck effect
Explanation:
What type of cross is a mating between two individuals that are both heterozygous for the same two genes
Answer:
Dihybrid cross
Explanation:
an organism that has two different alleles for a trait
Answer:
heterozygous.
Explanation:
An organism that is heterozygous for a trait has two different alleles for that trait.
You would expect a cell with many chloroplasts to, secrete a lot of fats, make ATP, do photosynthesis, or store water?
Answer:
Cells with many chloroplast usually aids in the process of photolysis which is helpful in photosynthesis. so we can say that the more is the chloroplast in a plant cell the more is the rate of photosynthesis and ATP is made.
What is another
way that producers
convert energy,
besides
photosynthesis?
A. chemosynthesis
B. decomposition
C. cellular respiration
Answer:
A
Explanation:
Because chemosynthesis is the biological conversion of one or more carbon-containing molecules and nutrients into organic matter using the oxidation of inorganic compounds or ferrous ions as a source of energy, rather than sunlight, as in photosynthesis. So it can only be this because decomposition is something decaying and cellular respiration is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
On the periodic table, electronegativity increases as we move from the left column to the right. What information does this give us?
A) Nitrogen is more likely than oxygen to form a chemical bond
B) Hydrogen and helium are equally likely to form a chemical bond
C) Fluorine and neon are equally likely to form a chemical bond
D) Oxygen is more likely than nitrogen to form a chemical bond
Answer:
I think answer a hope it is helpful
Inadequate erythropoiesis or hemoglobin synthesis, hemorrhage, and increased RBC destruction are all common causes of the erythrocyte disorder called
Inadequate erythropoiesis or hemoglobin synthesis, hemorrhage, and increased RBC destruction are all common causes of the erythrocyte disorder called anemia.
What is anemia?When you have anemia, your body doesn't produce enough healthy red blood cells to supply your tissues with enough oxygen.The most prevalent and clinically diverse erythrocyte volume homeostasis disorders are the inherited exocytosis syndromes.The severity of anemia varies, and some individuals do not seek medical care until far into their later years.The 3 main causes of anemia
Blood lossLack of red blood cell productionHigh rates of red blood cell destruction.Learn more about RBC here:
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Answer:
Hemolytic anemia
Explanation:
Glycogen - Starch - Polysaccharide - Saturated fat A. Carbohydrate polymer B. Hard at room temperature C. Animal carbohydrates D. Plant carbohydrates
Polysaccharide - A) Carbohydrate polymer
Starch - D) Plant carbohydrate
Glycogen. - C) Animal carbohydrate
Saturated fat. - B) Hard at room temperature
What are carbohydrates?Carbohydrates (also called carbs) are a type of macronutrient found in certain foods and drinks. Sugars, starches and fiber are carbohydrates.
Carbohydrates are often referred to as saccharides and form ring structures.
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Glycogen - (C) Animal carbohydrate
Starch - (D) Plant carbohydrate
Polysaccharide - (A) Carbohydrate polymer
Saturated fat - (B) Hard at room temperature
1. Glycogen - Animal carbohydrate
Animal starch is a type of starch termed glycogen that is present in animal tissue.
2. Starch - Plant carbohydrate
The primary form of stored carbohydrates in plants is starch.
3. Polysaccharide - Carbohydrate polymer
long-chain polymeric carbohydrates made up of glycosidic connections holding monosaccharide molecules together.
4. Saturated fat - Hard at room temperature
Saturated fats are tightly packed fats that are solid at room temperature because their chemical structures don't contain double bonds.
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An owl eats it's pray while or in large pieces. summarize what is found in an owl pellet an why is regurgitated
Pellets are the portions of a bird's diet that have not been digested and are regurgitated. Examples of pellets include hair and bones . Pellets are produced by a wide variety of bird species, including but not limited to birds of prey, crows, and even sparrows.
Owl pellets consist of indigestible elements of their prey, such as bones, fur, claws, and teeth. However, they perform another crucial function for the owl. Regurgitating pellets, which travel through the bird's gullet on the way back up, scrub and clean the digestive tract, eliminating infections and maintaining the bird's health. Those who raise birds of prey like owls and falcons can utilize the pellets to determine the health of their birds.
Prey animals, such as field mice, have learnt to avoid the pellets since they are infectious agents. However, certain owl pellet pathogens, such as Salmonella, can potentially infect humans.
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how asthma is caused i just need a short answer
Answer:
These include:
•having an allergy-related condition, such as eczema, a food allergy or hay fever – these are known as atopic conditions
••having a family history of asthma or atopic conditions
having had bronchiolitis – a common childhood lung infection
••exposure to tobacco smoke as a child
your mother smoking during pregnancy
being born prematurely (before 37 weeks) or with a low birth weight
Answer:
your mother smoking during pregnancy
How to prevent diseases that spread through mosquitoes?
How are channel and carrier proteins different?
Select all that apply.
Channel proteins move substances across the membrane at a much faster rate than carrier proteins.
Channel proteins allow all types of molecules to pass through the membrane, while carrier proteins are specific to what they transport.
Carrier proteins can allow much larger substances to cross the membrane than channel proteins do.
Carrier proteins undergo a shape change as they move substances across the membrane, while channel proteins do not.
Answer:
Carrier proteins undergo a shape change as they move substances across the membrane, while channel proteins do not. Channel proteins move substances across the membrane at a much faster rate than carrier proteins. Carrier proteins can allow much larger substances to cross the membrane than channel proteins do.
Its the Last one
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The diversification of reptiles facilitated by the evolution of the reptilian egg is a good example of Group of answer choices parallel evolution. devolution adaptive radiation.
The diversification of reptiles facilitated by the evolution of the reptilian egg is a good example of adaptive radiation.
What is adaptive radiation?
A rapid growth in the number of species sharing a common ancestor that is characterized by high ecological and morphological variation is known as adaptive radiation. It is fueled by organisms' ability to adapt to novel ecological situations.
The formation of their scaly skin, which contains the protein keratin and waxy lipids, limiting water loss from the skin, was one of the major adaptations that allowed reptiles to live on land. Because of this occlusive skin, reptiles and amphibians both use their lungs to breathe rather than their skin for respiration. The phenomenon of adaptive radiation was first observed by Darwin. During the Mesozoic era, the age of reptiles ( dinosaurs), mammals were small, generalized, and rare.
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Gene got medicare before he turned 65 and enrolled into a medicare advantage plan. He calls in february the month before his 65th birthday and is unhappy with his current plan. On the date of the call, what can gene do about his coverage?.
On the date of the call, gene can wait to be 65 years old and prepare the necessary documentation, as medicare is by law to be integrated to people aged 65 and over.
How Old Are People Generally Eligible for Medicare?If they are 65 years of age or older. Are on kidney dialysis or have had a kidney transplant. Are under 65 with certain disabilities.
With this information, we can conclude that Medicare is a program jointly funded by the federal and state governments to help pay for health care.
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Collections of sympathetic postganglionic axons, parasympathetic preganglionic axons, and some visceral sensory axons that provide complex innervation to target organs are known as ______ plexuses.
Collections of sympathetic postganglionic axons, parasympathetic preganglionic axons, and some visceral sensory axons that provide complex innervation to target organs are known as Autonomic Plexuses.
The solar plexus is the most important autonomic plexus and affords innervation to a couple of abdominal and pelvic organs. The superior mesenteric plexus consists of the superior mesenteric ganglia and is positioned across the advanced mesenteric artery.
The 5 autonomic plexuses include the Celiac plexus (additionally referred to as the sun plexus): This plexus sits in the back of your stomach and innervates organs of your stomach. Auerbach's plexus: This plexus innervates your gut and functions as part of your digestive device.
A nerve plexus is a community of intersecting nerves; a couple of nerve plexuses exist in the body. Nerve plexuses are composed of afferent and efferent fibers that stand up from the merging of the anterior rami of spinal nerves and blood vessels.
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Elle wanted to test how temperature affects the rate of evaporation. She had
three setups:
Setup 1: Elle placed a container with 1 cup of water at room temperature
(25°C).
Setup 2: Elle placed a container with 1 cup of water in a warm room (45°C).
Setup 3: Elle placed a container with 1 cup of water in a cold room (0°C).
Which setup was the control?
A. There was no control.
B. Setup 1
C. Setup 2
D. Setup
Setup 1 was the control of this experiment designed by Elle to test how temperature affects the rate of evaporation. Thus, the correct option is B.
What is Evaporation?Evaporation may be defined as a methodology where liquid transforms into a gas below the temperature at which it boils.
Setup 1 was the control because the room temperature (25°C) is an optimum temperature, where no chemical as well physical properties allow the substances to transform into another state.
Therefore, the correct option for this question is B.
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what’s a non property of water?
Answer:
-it dissolves molecules in the air
-it becomes denser when it freezes.
Each ____ fragment of an antibody molecule contains the variable regions of a heavy and light chain which makes up a site which binds to an antigenic epitope. Group of answer choices
Each Immunoglobulin fragment of an antibody molecule contains the variable regions of a heavy and light chain which makes up a site that binds to an antigenic epitope.
A protein is made by means of B cells and plasma cells (varieties of white blood cells) and allows the body fight contamination.
A few immunoglobulins may be observed in better than regular quantities in patients with sure conditions or certain styles of cancer, including multiple myeloma and Waldenstrom macroglobulinemia.
Immunoglobulins are the antibodies produced clearly by the frame's immune system, which help combat infection and sickness. Intravenous immunoglobulin, or IVIg, is a remedy that combines immunoglobulins donated by using one-of-a-kind humans to deal with diverse situations.
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A rock resting high on a cliff is an example of an object with
what type of energy? (2 points)
Kinetic energy because it is doing work
O Kinetic energy because it has the ability to do work
Potential energy because it is doing work
Potential energy because it has the ability to do work?
Answer:
Potential energy because it has the ability to do work
Explanation:
Kinetic energy is when an object is doing work, and potential energy is when an object has the potential to get kinetic energy either due to it's position or molecular composition. In this case since the rock is resting high on a cliff, it has a bunch of potential energy, due to it's position, because gravity. If it were to fall of the cliff, it would then convert that potential energy to kinetic energy, but at that moment, since it's resting, it's only potential energy, because it has the potential to convert into kinetic energy. So the correct answer is: Potential energy because it has the ability to do work
Hormones are chemical molecules produced by endocrine glands. One such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. Which two statements describe the probable reason for the function of the hormone?
The cells in the heart have specific receptors that allow for the intake of hormones.
The heart and the endocrine glands have the exact same types of cells.
All cells make the same types of hormones.
Thyroid hormones show their effect on the heart by means of specialized cells.
Thyroid cells and cardiac cells have different DNA.
The correct statements are
Statement(1) : The cells in the heart have specific receptors that allow for the intake of hormones.
Statement(4) : Thyroid hormones show their effect on the heart by means of specialized cells.
What are hormones?Hormones are chemicals that coordinate many bodily processes by sending information to your organs, skin, muscles, and other tissues through your blood. Your body receives these messages that instruct it when and what to do. Your life and health depend on hormones.
Your endocrine system is composed primarily of the glands and tissues that produce and secrete hormones. Numerous physiological functions are regulated by hormones.
What are thyroid hormones?The key hormone in charge of regulating how quickly your body's metabolism works is the thyroid hormone. Thyroid hormone is essential for baby brain development. Thyroid hormone is produced and released by your thyroid, a little gland in the shape of a butterfly that is tucked under the skin at the front of your neck. Your endocrine system contains it.
What are endocrine glands?The network of glands in your body known as the endocrine system produces the hormones needed for cells to communicate with one another. They are in charge of practically every cell, organ, and bodily process. The endocrine system is made up of several glands.
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The two statements are: The cells in the heart have specific receptors that allow for the intake of hormones and Thyroid hormones show their effect on the heart by means of specialized cells.
What are hormones?Hormones are chemical messengers produced by endocrine glands that regulate various physiological processes and behaviors in the body. They are secreted into the bloodstream and carried to target cells or organs where they exert their effects by binding to specific receptors. Hormones play a crucial role in maintaining homeostasis, coordinating growth and development, regulating metabolism, controlling reproductive functions, and influencing mood and behavior.
Different endocrine glands produce different types of hormones, each with its specific functions and target tissues. Examples of hormones include insulin, cortisol, estrogen, testosterone, and thyroid hormone. The precise balance and regulation of hormones are essential for the proper functioning of the body and maintaining overall health and well-being.
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Biology question on human digestive system
Answer:
X : A) To absorb amino acids
Y : B) To secrete enzymes
Answer:
X) C. to transport fats
Y) C. to secrete enzymes
Explanation:
The epithelium or "Y" is responsible for the absorption of nutrients, and the protection of the human body from microbial infections.
The lacteal or "X" absorbs dietary fats in the villi of the small intestine. It absorbs and transports large molecules, fats, and lipids in the digestive system.
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The largest reservoir of phosphorus in the biosphere is
Answer:Ocean sediments
Explanation:
Compare how fresh and marine fish overcome problems
Answer:
the ciliated epithelium tissue helps to collect the ovum why?