The number of species on an island depends on the size of the island and its distance from the mainland. This statement would most likely be made by Biogeographer.
What is island biogeography?Island biogeography is a field within biogeography that examines the factors that affect the species richness and diversification of isolated natural communities.The field was started in the 1960s by biogeographer Robert H. MacArthur and E.O.Wilson, who coined the term island biogeography.The theory of island biogeography proposes that the number of species found in an undistributed island environment is determined by immigration and extinction.So biogeographers described island biogeography which tells about a number of species on an island.To learn more about Island biogeography,
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The reason animals need a continuous supply of oxygen jis to _______________________. make carbon dioxide dispose of carbon dioxide carry out glycolysis obtain energy from their food
The reason animals need a continuous supply of oxygen is to Obtain energy from their food.
The most fundamental reason why animals need a non-stop delivery of oxygen is without it animals can't achieve sufficient power from their meals.
Cells require a steady delivery of power to generate and preserve the biological order that keeps them alive. This electricity is derived from the chemical bond energy in food molecules, which thereby function as fuel for cells.
The animal's metabolism converts oxygen into strength. All through this system, a waste gas called carbon dioxide is produced. To remove it, the carbon dioxide is carried lower back to the lungs, where its miles are collected and exhaled.
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Explain how chromosomes work?
Answer:
Hope my answer will help you .
Explanation:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
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Pathogen-specific defenses in the body include all of the following EXCEPT:
A. t-cells
B. Ingestion of bacteria
C. B-cells
D. Antibodies
Answer:
B. Ingestion of bacteria
Explanation:
Phagocytosis is not pathogen-specific
Ingestion of bacteria is not a pathogen-specific defence; it is a general mechanism of the immune system to clear any harmful particles, including bacteria. The correct option is B.
Pathogen-specific defences involve T-cells, B-cells, and antibodies, which target and eliminate specific types of pathogens in a highly specialized manner.
T-cells: They are a part of the pathogen-specific defence system. T-cells help identify and destroy infected cells and regulate the immune response.B-cells: B-cells are another type of white blood cell that is essential in the immune response. They produce antibodies, which are proteins that specifically target and neutralize specific pathogens. D. Antibodies: Antibodies are produced by B-cells and are a key part of the pathogen-specific defence system. They recognize and bind to specific pathogens, marking them for destruction by other immune cells.Whereas, ingestion of bacteria is a general mechanism of the immune system, where white blood cells called macrophages engulf and destroy bacteria and other foreign particles.
Thus, the correct answer is B.
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Select the correct answer.
Why is the nucleus considered the command center of the cell?
A.
It contains the genetic instructions for every function of the cell.
B.
It is the cell’s powerhouse and processes energy for the cell.
C.
It is the organelle present in both prokaryotic and eukaryotic cells.
D.
It is responsible for packaging proteins for delivery out of the cells.
When forest areas are clear-cut for timber, spaces previously filled with trees become open areas that have full access to sunlight. Which plant populations would be best suited for this newly generated environment
Those that produce many offspring would be best suited for this newly generated environment.
A phenomenon called genetic flow can also motivate species to conform. In genetic float, a few organisms. in simple terms by way of risk produce extra offspring than might be anticipated. The one's organisms are not always the fittest in their species, however, it is their genes that get passed directly to the next era.
Due to the fact resources are limited in nature, organisms with heritable trends that favor survival and replica will have a tendency to leave greater offspring than their friends, causing the developments to increase in frequency over generations.
Overproduction is a driving pressure in natural selection, as it may result in variation and versions in a species. Darwin argued that every one species overproduce since they have got greater offspring than can realistically attain reproductive age, based on the resources available.
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Which phylum of protozoa contains organisms that are non-motile, obligate intracellular parasites?.
Answer:
The answer is Apicomplexa.
Hope this helps:-):-)
3. What is peptidoglycan?
combination of polypeptides and modified sugars that enclose the entire eubacteria
a special molecule that helps make proteins
a special molecule that helps eubacteria to make their own food
a combination of sugars and lipids that make up the cell membrane
Answer:
A combination of polypeptides and modified sugars that enclose the entire eubacteria.
Explanation:
A component of bacterial cell walls called peptidoglycan (PGN) promotes innate immune responses. Peptidoglycan, a polymer made of sugars and amino acids, creates the cell wall of the majority of bacteria by producing a layer that resembles a mesh outside the plasma membrane. N-acetylglucosamine and N-acetylmuramic acid residues are alternated in the sugar component. forms a saccules in the cell wall of most bacteria that resembles a bag. It controls bacterial cell shape and is crucial for osmotic stability. A heteropolymer made up of glycan strands carrying small peptides is known as a peptidoglycan.
Answer:
I hope this helps.
Explanation:
During an action potential, activation of voltage-gated sodium and potassium channels occurs at different rates. What is the effect of this difference on ion flow across an axon membrane?.
K+ departs the cell after Na+, which enters the cell first. Ions can move freely across the axon membrane because of the difference during the action potential.
Because sodium contains a positive charge, the neuron becomes more positive and depolarized. Potassium channels take longer to open. As soon as the cell does open, K+ rushes out, reversing the depolarization.Sodium channels close during the peak of the action potential when potassium leaves the cell. When potassium ions are effluxed, the membrane potential is lowered or the cell becomes hyperpolarized.Because it depends on adenosine triphosphate (ATP) for power, the sodium/potassium pump is sometimes referred to as an ATPase. Outside of the cell, the concentration of Na+ is greater than inside the cell. while the concentration of K+ is is greater inside the cell than outside.learn more about action potential here: https://brainly.com/question/6705448
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Alopecia, also known as __________, is the partial or complete loss of hair that occurs most commonly on the scalp.
Answer:
Baldness
Explanation: hair loss, or absence of hair. Baldness is usually most noticeable on the scalp, but can happen anywhere on the body where hair grows.
Write a paragraph explaining how adhesion cohesion and capillary action all enable water to go from the roots to the top of the tree
Adhesion, cohesion and capillary action enable water to go from the roots to the top of the tree due to its specific property.
How adhesion cohesion and capillary action move water to the top?Capillary action helps to bring water to the upper parts from the roots but to a small distance due to strong gravity. In order to get water up to all the branches and leaves, the forces of adhesion and cohesion work together in the plant's xylem to move water to the upper body.
So we can conclude that adhesion, cohesion and capillary action enable water to go from the roots to the top of the tree due to its specific property.
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The interplay of the force is adhesion and cohesion helps to move the water up the roots to the top of the tree.
How does water move up a tree?We know that water is a polar molecule hence the dipole dipole interaction tends to make the molecules of water to coalesce together. This is the force of cohesion.
The force of adhesion binds the water molecule to other surfaces hence it cam interact with the xylem cells. Capillary action is the process that enable the water to enter the roots.
Thus the interplay of the force is adhesion and cohesion helps to move the water up the roots to the top of the tree.
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How are proteins built using the information provided by a molecule of RNA?
Answer:
Ribosomal RNA (rRNA) associates with a set of proteins to form ribosomes. These complex structures, which physically move along an mRNA molecule, catalyze the assembly of amino acids into protein chains. They also bind tRNAs and various accessory molecules necessary for protein synthesis.
Explanation:
Fatty acids, in particular, essential fatty acids alpha-linolenic and linoleic acid are intimately related to managing inflammation in the body.
Answer:
A cell's messenger RNA molecules contain instructions that are read by the ribosome, which then uses these mRNAs to assemble amino acids into proteins in the precise order specified by the mRNA.
⇒ How are proteins formed?
In essence, proteins are very long sequences of chemicals known as amino acids. A protein's specific amino acid arrangement defines the form it will take, which in turn affects what it will accomplish. For instance, certain proteins have the ideal structure to grasp two more molecules and smush them together in order to combine them (these proteins are called enzymes). Other proteins have the ideal structure to transport significant substances (like hemoglobin, which is a protein that carries oxygen around your blood). Your DNA is also a long chain of molecules, but these molecules are called nucleotides. There are four main nucleotides that make up the chain, and each is represented by a letter (A, C, T, and G). The sequence of "letters" in DNA contains all the information to make proteins in your body. Scientists represent DNA by writing out the sequence of "letters," like ATCTGCCATCCCGT. Now here's the important bit: these letters are arranged in 3-letter words that "mean" an amino acid. For example, "ATC" in DNA corresponds with an amino acid called glutamine. A long chain of these three letter words will match perfectly the chain of amino acids in a protein. So if a protein has amino acids 1, 2, and 3, the DNA corresponding to that protein will have the 3-letter words that mean amino acids 1, 2, and 3 in order. A sequence of DNA that matches a protein is called a gene. When it's time to make a protein, your body unravels the DNA and makes a copy of the gene on a different, very similar molecule called messenger RNA (mRNA). This copying is called transcription--like you're transcribing your notes from your notebook to your computer. This mRNA flies out to a thing in your cells called a ribosome, which actually goes through and READS the RNA sequence and attaches amino acids in the right order. So it will go "okay, these 3 letters mean this amino acid, the next 3 letters mean this amino acid, etc." and just attach all the amino acids in a row.* So you end up with a long long chain (hundreds, even thousands!) of amino acids in the exact sequence of the DNA letters that you had originally. This process of matching DNA "words" to amino acids is called translation--like you're translating from the "language" of DNA to the "language" of proteins/amino acids. This long chain of amino acids then detaches itself from the ribosome, folds itself up, and voila! You have a protein! This is happening millions of times constantly all around your body as all your cells make all the proteins they need to function. Now in reality, it's actually a lot more complicated than that--the DNA isn't always in the right order, the protein can get "cut" and shaped by other things after it detaches, etc. But this is the basic process and is what you need to know!
⇒ How does DNA/RNA store information?
Adenine, guanine, cytosine, and thymine/uracil are the four bases that make up the quaternary code, which is the sort of coding used by DNA and RNA to store information. Ribonucleic acid (more particularly, messenger RNA) is introduced when a cell needs to code for a protein. Temporarily attaching to the DNA bases, the mRNA bases duplicate the DNA's instructions. The mRNA next exits the nucleus and enters the ribosomes. Then transfer RNA, or tRNA, enters the picture. It has a three-base region (a codon) that binds to the mRNA and an amino acid linked to the end. The amino acid is then released once the tRNA attaches to the mRNA. After that, it joins a protein or polypeptide chain.
Some taxonomists have developed an alternate system of classification in which tarsiers, monkeys, apes, and humans are placed together in the suborder Group of answer choices Prosimii. Lorisoidea. Haplorhini. Strepsirhini.
Prosimii taxonomists have developed an alternate system of classification in which tarsiers, monkeys, apes, and humans are placed together.
The answer is option A.
Historically, the order Primates was divided into Prosimii (the primitive primates: lemurs, lorises, and tarsiers) and Anthropoidea (the bigger-brained monkeys and apes, consisting of humans).
Part of the corridor of Human Origins. People are primates–a numerous group that includes a few two hundred species. Monkeys, lemurs, and apes are our cousins, and all of us have developed from a commonplace ancestors over the last 60 million years. Due to the fact primates are associated, they may be genetically similar.
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 Explain how to make a cheek cell slide
Methods
Take a clean cotton swab and gently scrape the inside of your mouth.
Smear the cotton swab on the centre of the microscope slide for 2 to 3 seconds.
Add a drop of methylene blue solution and place a coverslip on top. ...
Remove any excess solution by allowing a paper towel to touch one side of the coverslip
The properties of filtrate in the glomerular capsule is normally very similar to that of blood plasma except for the lack of:
The properties of filtrate in the glomerular capsule are normally very similar to that of blood plasma except for the lack of Proteins.
Properties of filtrate in the glomerular capsuleThe kidneys filter 1100–1200 cc of blood every minute on average. Three layers of blood are filtered as a result of glomerular blood pressure. Bowman's capsule epithelium, glomerular blood vessel endothelium, and the basement membrane between these three layers.The filtration membrane is composed of these three entities.These membranes filter the blood so thoroughly that all but a small portion of the plasma's components enter the bowman's capsule's lumen. Additionally, both of them contain diverse electrolytes like sodium, potassium, chloride, and bicarbonate ions as well as glucose, creatinine, urea, and uric acid except for proteins. This procedure is hence termed ultrafiltration.
Therefore, "Proteins" is the right response.
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From your perspective, how does the frequency of the waves appear to change as the airplane approches and then passes you ?
Answer:
The frequency of the waves appear to change as the airplane approaches and then passes you because the sound waves are being compressed as the airplane moves closer to you. The sound waves are being stretched out as the airplane moves away from you.
Explanation:
A peacock is significantly more colorful than a pea hen and has a much larger tail. These traits allow the peacock to attract a mate but also make the peacock more visible to predators. This is an example of:
Answer:
This is an example of runaway sexual selection
a sparrow. We cannot see its ears. Which of these actions by the sparrow shows us that it can hear?
A sparrow. We cannot see their ears. One action of the sparrow that shows us that it can hear is when it listens to other birds or responds to sound stimuli produced.
How is the bird's ear?The ears are on the side of the skull, just like in other land animals, but the difference is that they don't have the ears. To find the ears you need to take them in your hands or when they are wet. So be careful with the bath!!
With this information, we can conclude that a bird's song is perceived by the brains of its companions in a similar way to the way the human brain deals with music.
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Single-cell recording studies of the motor control of reaching movements have demonstrated that neurons in the motor cortex are selectively active based on the
The single cell recording studies of the motor control of reaching movements have demonstrated that neurons in the motor cortex are selectively active based on the movement of the body.
Describe the motor cortex.The primary function of the motor cortex is to generate signals to direct the movement of the body.It is part of the frontal lobe and is anterior to the central sulcus.It consists of the primary motor cortex, premotor cortex, and supplementary motor area.The primary motor cortex, situated in Brodmann area 4, sends most electrical impulses coming out of the motor complex.The premotor complex is situated just anterior to the primary motor cortex. Its function is to prepare for movements, especially proximal musculature.The supplementary motor cortex is on the medial surface of the longitudinal fissure, just anterior to the leg representation in the primary motor cortex. Although not fully understood, proposed functions include body postural stabilization and coordination.To learn more about Motor cortex,
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Why is soil erosion more common in areas that lack adequate vegetation?
Select one:
O a. Because gravity pulls on the plants and increases erosion.
Ob.
Because plant roots help keep the soil in place.
O c.
Because the lack of adequate vegetation affects the soil pressure and erosion rate.
Od. Because soil erosion is stopped by reduced vegetation.
Answer:
B: Because plant roots help keep the soil in place.
Brainliest?
Some of the mechanisms by which enzyme catalytic activity is controlled are: A. allosteric control. B. feedback inhibition. C. covalent modification. D. A and C. E. A, B, and C.
Some of the mechanisms by which catalytic activity is controlled are option(e) i.e, A, B, and C, (allosteric control, feedback inhibition, and covalent modification)
What is the catalytic activity?The acceleration of chemical reactions brought on by the presence of a catalyst. A catalyst value is measured as a rise in the reaction rate.
Specific surface area, pore structure, oxygen-containing functional groups, and the amount of ash and its components all have an impact on how well AC catalysts perform. The role that specific surface areas and pore shapes play in methane adsorption is significant.
Examples are:
1) The hydrogenation of palm oil into margarine uses the metal nickel or Ni. 2) The Haber process makes use of iron, Fe.There are three different forms of catalysis, depending on the nature and physical condition of the materials used in the chemical reaction.
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Bioaugmentation involves Group of answer choices adding nitrogen and phosphorus to an area in need of remediation. adding specialized microbes to an area in need of remediation. producing humus from plant waste. producing a methane by-product for powering facility equipment. using microbes to filter out impurities from leach water.
Answer:
Bioaugmentation involves adding specialized microbes to an area in need of remediation.
Explanation:
The practice of adding specialized microbes for degrading specific substances such as contaminants, and biodegradable substances. This will increase the rate of degradation or catabolism of the said materials. They will help to resolve the problem of waste that is being produced every day.
They fall into two different strategies as they can be enriched by indigenous and non-indigenous microorganisms. They are not used for enriching the nutrients in the soil, producing humus, methane, etc. There can be byproducts of bioaugmentation and such byproducts can be increased availability of soil nutrients, methane, etc. But it is not the primary purpose of bioaugmentation.
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A population of panthers lives in the southeastern united states. over 50 years, the size of the panther population in the region increased. what best explains the increase in the size of the panther population?
a.the panther population is always increasing because no animal eats panthers.
b. fewer panthers were born than died. fewer panthers were born than died.
c. more panthers were born than died. more panthers were born than died.
d. a lot of panthers were born and none of them died.a lot of panthers were born and none of them died.
more panthers were born than died. more panthers were born than died
The population of the Florida panther once dwindled to below two dozen, but it has since rebounded to more than 200
What is the panther population in Florida ?Today there are only 120 to 130 Florida panthers left in the wild. They are found in southern Florida in swamplands such as Everglades National Park and Big Cypress National Preserve
Florida's largest wild cat species, the panther is critically endangered, but has been making a slow and steady comeback since numbers sunk to just 20 individuals in the 1970's. As of 2021, most estimates place the present day population at around 200.By far the greatest threats to Florida panthers are habitat loss, fragmentation and degradation — all driven by Florida's burgeoning human population and the developments and highways that accommodate it.Learn more about Florida Panther here:
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If an egg that contains 24 chromosomes instead of 23 chromosomes is fertilized by a normal sperm, the result is ____________ because one type of chromosome is present in three copies.
If an egg that contains 24 chromosomes instead of 23 chromosomes is fertilized by a normal sperm, the result is trisomy because one type of chromosome is present in three copies.
What is trisomy?The presence of an extra chromosome in some or all of the body's cells. Trisomy causes that chromosome to have three total copies rather than the typical two copies. A trisomy is a type of aneuploidy (an abnormal number of chromosomes). For instance, having three copies of chromosome 21 rather than the customary two copies results in Down syndrome (trisomy 21), which is a genetic condition.
The additional chromosome leads to meiotic abnormalities, which are exhibited by abnormal associations at metaphase I, asymmetrical chromosomal separation, laggard and bridge creation at anaphase I, and abnormal associations at metaphase II. As a result, trisomic individuals develop imbalanced gametes (n+ 1).
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Gene expression can be regulated differently along the central dogma. Which regulation type would have the fastest effect
Post-translation modification regulation type would have the fastest effect.
Gene expression can be defined as a process in which the information stored in genes in the form of nucleotides gets translated into proteins. This whole gene expression process takes place in multiple steps which are combined as central dogma where the process of formation of new DNA (deoxyribonucleic acid) from pre-existing DNA molecules is termed Replication, the process of transcribing this DNA into mRNA is termed Transcription and the process of translating these mRNA into functional proteins is known as translation.
Post-translation modifications (PTM) as their name suggests are the modifications to the newly synthesized proteins that occur after the completion of the translation process. Phosphorylation, acetylation, hydroxylation, and methylation are some of the commonly known PTMs.
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Large blood vessels and lymphatics are found in the?
A synapsis is the X-like formation that represents an exchange of genetic material between chromatids on homologous chromosomes. Select one: True False
False
Reason:chiasmata is the x-like formation that does this chromatids are attached to one another.
What is synapsis chiasmata?Homologous chromosomal pairing is referred to as synaptism.This takes place in the second prophase I or zygotene stage.Chiasmata are the points at which homologous pairs of chromosomes come into contact. The non-sister chromatids of the homologous pairs swap chromosomal segments at the location of chiasmata.
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The afferent and efferent neurons together form the The afferent and efferent neurons together form the central nervous system. autonomic division. somatic motor division. visceral nervous system. peripheral nervous system.
The afferent and efferent neurons together form the peripheral nervous system.
What are the parts of the peripheral nervous system?The peripheral nervous system is made up of nerves and nerve ganglia. See how they are distributed and how they act in the body. The nerves of the peripheral nervous system are like cords formed by nerve fibers arranged and surrounded by connective tissue.
in this case, the peripheral nervous system is responsible for the afferent and efferent neurons together.
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C cells of the thyroid gland secrete __________. C cells of the thyroid gland secrete __________. tetraiodothyronine cortisol calcitonin triiodothyronine
C cells of the thyroid gland secrete calcitonin.
What does C cells of thyroid gland produce?The thyroid follicle, which is the gland's active component, is encircled by a single layer of epithelial cells, and the lumen is stuffed with colloidal material. It includes parafollicular cells, or C cells, which release calcitonin.The C-cells of the thyroid gland secrete calcitonin, a 32 amino acid hormone.When the concentration of blood calcium has grown over the usual range, the thyroid gland releases the hormone calcitonin, which lowers the level. The parafollicular cells, sometimes referred to as the C cells, of the thyroid gland are the principal producers of this polypeptide hormone, which has 32 amino acids.Learn more about thyroid gland here:
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Disclaimer: The question was given incomplete on the portal. Here is the complete question.
Question: The C cells of the thyroid gland secrete
a) TSH.
b) parathormone.
c) thyroxine.
d) triiodothyronine.
e) calcitonin
What microscopy tool would be most useful in observing the structure of a virus?.
Frozen red blood cells that have been thawed, deglycerolized and reconstituted in an open system must be used within _______.
Frozen red blood cells that have been thawed, deglycerolized and reconstituted in an open system must be used within 24 hours.
Cryopreservation of Red blood cells (RBCs) can be done with a long time span of usability of 10 years. Glycerol safeguards RBCs during freezing and defrosting, yet it can cause hemolysis if it is not washed off or eliminated before transfusion. When a unit has been deglycerolized, the shelf life of RBCs in an open system is only 24 hours, bringing about sporadic utilization of Frozen RBCs from the outset of the procedure or in close system cases it is up to 14 days.
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Frozen red blood cells that have been thawed, deglycerolized and reconstituted in an open system must be used within 24 hours.
The classical way of preserving the blood cells is to store them at low temperatures. The phenomenon by which the red blood cells are frozen and defrosted is called cryopreservation. This process requires the use of glycerol to safeguard the RBCs from damage. The glycerol is washed off prior to transfusion to avoid hemolysis. After removal of glycerol, the shelf life of RBCs in case of an open system is only for 24 hours. This creates the need of immediate use of the frozen RBCs. However, in case of close system, the RBC utilization period is up to 14 days.
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