Answer:
c. Bryozoans build reefs and have lophophores that extend through a hard exoskeleton.
Explanation:
Bryozoans are sessile and colonial, typically settling on hard substrate including sand grains, rocks, and shells, as well as on blades of kelp or other algae, although some species settle on softer sediment.
The correct statement about bryozoans (ectoprocts) is b. Bryozoans are colonial, build reefs, and are related to corals.
To determine the correct statement, let's analyze each option:
a. Adult bryozoans are sessile, but their larvae make up much of marine plankton.
- This statement is true. Bryozoans, also known as ectoprocts, are primarily marine and freshwater sedentary (sessile) animals. Their larvae are indeed planktonic, meaning they drift in the water column as part of the plankton. However, this statement alone does not fully characterize bryozoans.
b. Bryozoans are colonial, build reefs, and are related to corals.
- This statement is correct. Bryozoans are colonial organisms, meaning they live in groups of interconnected individuals. Some species of bryozoans do contribute to reef formation, although they are not the primary reef-builders in modern oceans (that role is primarily filled by corals). Bryozoans are distantly related to corals as both are members of the phylum Lophotrochozoa, but they belong to different classes
c. Bryozoans build reefs and have lophophores that extend through a hard exoskeleton.
- This statement is partially true. While bryozoans do have lophophores (a crown of tentacles surrounding the mouth, used for filter feeding), these structures do not extend through a hard exoskeleton. The lophophore is typically withdrawn into a protective skeletal structure called a zooecium when not feeding. While some bryozoans contribute to reef structures, they do not build reefs in the same way that corals do.
d. Bryozoans are colonial and live amongst mosses.
- This statement is misleading. While the name ""bryozoan"" means ""moss animal,"" this is a historical misnomer. Bryozoans do not live amongst mosses; they are aquatic animals and the ""moss"" in their name likely refers to their colonial, branching appearance that might superficially resemble moss.
Given the information above, option b is the most accurate statement regarding bryozoans. They are indeed colonial, some species contribute to reef structures, and they are related to corals within the Lophotrochozoa phylum.
which best summarizes the concept of natural selection?
A. The fittest organisms survive and reproduce.
B. A mutation always makes a species fitter.
C. An organism will always adapt to its environment.
D. An organism will always mutate to survive.
Answer:A the fittest organism survive and reproduce
Explanation:
The best option that summarizes the concept of natural selection is "The fittest organisms survive and reproduce." The correct option is A.
What is Natural Selection?Natural selection is a basic mechanism of evolution that results in the adjustment of characteristics of living organisms throughout generations as a result of the reproductive success of particular individuals.
Natural selection happens when the environment affects a trait that influences reproductive success. Hence, traits that help an organism survive to reproduce will likely become more common over generations.
Traits that impair survival or reproduction will become less common. Thus, the fittest organisms survive and reproduce. Hence, option A best summarizes the concept of natural selection.
Therefore, the correct option is A.
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explain how anaerobic respiration results in muscle fatigue
Answer:
Explanation:
However, ATP production by anaerobic respiration may still support some further muscle contraction. Ultimately, the accumulation of lactic acid from anaerobic respiration and the depletion of resources (ATP, oxygen, and glycogen) lead to muscle fatigue, and muscle contraction stops.
Final answer:
Anaerobic respiration in muscles leads to fatigue by producing lactic acid, especially during high-intensity exercise where oxygen supply is insufficient for aerobic respiration.
Explanation:
Anaerobic respiration is a biological process that occurs when there is not enough oxygen for aerobic respiration. During high-intensity exercise, muscles have an increased demand for energy, but the oxygen supply may be insufficient. In such cases, the muscles rely on anaerobic glycolysis to produce ATP, which is less efficient and results in the formation of lactic acid as a byproduct.
Accumulation of lactic acid is one of the factors that leads to muscle fatigue. Additionally, the conversion of pyruvic acid to lactic acid allows for the recycling of the enzyme NAD from NADH, crucial for the continuation of glycolysis. The quick energy supply from anaerobic respiration enables the muscles to perform short bursts of activity despite its inefficiency and the fatigue it ultimately causes.
The __________ nephrons have LOHs that span deeply into the medulla. The __________ is the capillary bed that drains these extended LOHs.
a. Cortical; vasa recta
b. Cortical; peritubular
c. Juxtamedullary; peritubular
d. Juxtamedullary; vasa recta
Answer:
The preferable option for the fill in the blanks will be - D.
D. Juxtamedullary; vasa recta
Explanation:
The juxtamedullary nephrons have LOHs that span deeply into the medulla. The vasa recta are the capillary bed that drains these extended LOHs.
LOH = loop of Henle
We know that the longitudinal section of the kidney has two regions - 1. an outer dark cortex and 2. inner light medulla. The juxtamedullary nephron is the structural and functional unit of the kidney with a long loop of Henle. Juxtamedullary nephrons have a long loop of Henle extending deep into the renal medulla. The vasa recta capillaries are long, hairpin-shaped blood vessels that run parallel to the loops of Henle. The hairpin turns slow the rate of blood flow, which helps maintain the osmotic gradient required for water reabsorption.White light can be separated into various colors of the spectrum by prisms. Prisms work because the white light that enters the prism is
transmitted through the prism.
absorbed in various wavelengths of light.
refracted as it exits the prism.
scattered at the surface of the prism.
Answer: Absorbed in various wavelengths of light.
Explanation: White light that goes inside the prism comes out in the colors of the rainbow, because the prism is very unique. You see, when the colors travel inside the prism, they travel at different speeds, so the wavelengths separate and create a different burst of colors.
White light separates into various colors when it passes through a prism due to refraction. The different wavelengths of the component colors are bent at varying angles, creating the visible light spectrum.
Explanation:White light is refracted as it exits a prism, which is why we can see the various colors of the spectrum. This phenomenon is known as dispersion. White light is composed of different colors, each of which has a different wavelength. These wavelengths are bent (or refracted) at varying angles as they pass through the prism.
This variance in refraction leads to the separation of white light into its component colors. From this dispersion we can see the visible light spectrum (commonly seen as a rainbow) when the light exits the prism. Therefore, it's not that the light is absorbed or scattered, but it's refracted, causing the light to separate into different colors.
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What is homosexuality
Answer:
attraction to the same gender
Explanation:
boys being attracted to boys and girls being attracted to girls
The most important force causing net outward water flow across capillary walls is ________. Question 19 options: 1) osmotic pressure of plasma proteins 2) hydrostatic pressure of capillary blood 3) hydrostatic pressure of interstitial fluid 4) intracellular hydrostatic pressure
Answer:
2) hydrostatic pressure of capillary blood
Explanation:
Hydrostatic pressure is the type of pressure exerted by any fluid in a confined space.
This force of hydrostatic pressure simply means that when blood moves along the capillary, fluid which contain nutrients and other basic substances are usually moved out through its pores and into the interstitial space.
Where does the efferent arteriole of the juxtamedullary nephron carry blood to?
Answer:The efferent arterioles form from a convergence of the capillaries of the glomerulus, and carry blood away from the glomerulus that has already been filtered. They play an important role in maintaining the glomerular filtration rate despite fluctuations in blood pressure.
The best Answer would get THE BRAINLIEST!
I need this answer within an hour!! plz help me!!!
The trees in the tropical rainforest are important to nutrient cycling in the biosphere.
a. Describe one role of trees in the carbon cycle.
b. Describe one role of trees in the water cycle.
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I need this answer within an hour!! plz help me!!!
Answer:
A. Absorbing the carbon during photosynthesis & the take CO2 out of the atmosphere. They also absorb so much carbon dioxide from the atmosphere and store the carbon in their biomass
B. They absorb water into their roots and transport it into the branches and leaves for food through the trunk. Excess water is then released through the leaves back into the air.
Explanation:
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Which process occurs during the growth and development of a fertilized human egg
Answer:
cell division
Explanation:
A young animal with no offspring of her own is more likely to put herself at risk and give an alarm call when predators approach her group when she has more close relatives in the group in danger. This is an example of:_______.
A. Kin selection.
B. Inclusive Fitness.
C. Intra-sexual selection.
D. Altruism.
Answer: b. Inclusive Fitness
Explanation:
Inclusive fitness is the number of equivalents of offspring that an organism rears, rescues, or otherwise supports through it's actions.
Inclusive fitness is a theory which suggests that an organism's genetic success depends on cooperation with other people in a population. For future generations, a gene would be more prevalent if all individuals possessing the gene succeed for reproducing it, rather than only one person having the gene.
Hence the correct option is b. Inclusive Fitness
BIO 203 Although the chromatin structure of interphase and mitotic chromosomes is very compact, DNA-binding proteins and protein complexes must be able to gain access to the DNA molecule. Chromatin-remodeling complexes provide this access by ___.
Answer:
Altering the extent of DNA supercoiling.
Explanation:
Chromatin Remodeling complexes provides access of transcriptional and regulatory activities to the DNA by changing the chromatin structure which is done by altering the extent of DNA supercoiling. Altering the extent of DNA supercoiling will give rise to a loose chromatin structure that the transcriptional and regulatory activities machinery can have access to. They include factors such as histone chaperones, histone modifying enzymes and ATP-dependent chromatin remodeling complexes.
Such mechanisms which the chromatin undergo include reconstruction: where nucleosomes undergo some compositional changes using special histone variants etc; enzyme induced covalent modification: which include acetylation, methylation, phosphorylation etc of histone tails; repositioning: such as histone chaperones mediating removal of histone from chromatin.
Chromatin-remodeling complexes provide access to DNA by using the energy of ATP hydrolysis to move nucleosomes. The correct option is a. using the energy of atp hydrolysis to move nucleosomes.
Chromatin-remodeling complexes play a crucial role in regulating gene expression by altering the structure of chromatin, allowing access to DNA-binding proteins and protein complexes. Here's how they achieve this:
ATP Hydrolysis: Chromatin-remodeling complexes utilize the energy from ATP hydrolysis to disrupt histone-DNA interactions and reposition nucleosomes along the DNA strand.
Nucleosome Movement: By physically sliding, ejecting, or restructuring nucleosomes, these complexes create regions of accessible DNA for transcription factors, RNA polymerases, and other regulatory proteins.
Modulating Histones: Some complexes can modify histone proteins directly, altering their interactions with DNA or with other histones, thereby influencing chromatin structure and gene accessibility.
Recruitment of Enzymes: Chromatin-remodeling complexes may recruit additional enzymes, such as histone acetyltransferases or histone methyltransferases, to further modify chromatin and regulate gene expression.
Dynamic Regulation: Through these mechanisms, chromatin-remodeling complexes dynamically regulate gene expression in response to cellular signals and environmental cues.
Complete question:- Although the chromatin structure of interphase and mitotic chromosomes is very compact, dna-binding proteins and protein complexes must be able to gain access to the dna molecule. chromatin-remodeling complexes provide this access by:
a. using the energy of atp hydrolysis to move nucleosomes.
b. modifying the n-terminal tails of core histones.
c. denaturing the dna by interfering with hydrogen-bonding between base pairs.
d. recruiting other enzymes.
e. cutting the sugar-phosphate backbone of one strand of dna.
The correct answer to the question is that chromatin-remodeling complexes provide access to the DNA molecule by altering the position of nucleosomes along the DNA strand.
In each simulation trial, you changed the number of people and measured the number of _ people in the population.
Therefore, the independent variable was the number of people who were
_ , and the dependent variable was the number of people who were _.
Answer:
immune
infected
immune to the disease
infected by the disease
Answer:
immune
infected
immune to the disease
infected by the disease
the total number of people
the series of people who exchanged liquids with each other
the number of individuals who were initially infected
Explanation:
The DNA sequence ATCAGCGCTGGC is part of a gene. how many amino
acids are coded for by this message? *
Answer:
4
Explanation:
Each section of three nucleotides (called a triad) codes for one amino acid. Since there
are four triads here, this piece of DNA codes for 4 amino acids
Final answer:
Assuming the provided DNA sequence is in the correct reading frame and does not include a stop codon, it encodes for four amino acids. The actual translation would depend on the mRNA transcribed from DNA, where a start codon must be present, and translation proceeds until a stop codon is reached.
Explanation:
The DNA sequence ATCAGCGCTGGC is composed of four codons: ATC, AGC, GCT, and GGC. Each codon corresponds to a single amino acid in the genetic code. However, without a start codon (AUG in mRNA), we cannot be sure where the translation begins or if it includes a stop codon to terminate the translation. Assuming the sequence provided is in the correct reading frame and does not include a stop codon not visible in the provided sequence, this DNA would code for four amino acids following the transcription and translation processes.
It's important to note that DNA sequences are first transcribed into mRNA, where thymine (T) is replaced with uracil (U), before being translated into amino acids. Furthermore, only mRNA sequences are directly translated into amino acids, where each codon specifies each amino acid. In proteins, the genetic code defines the relationship between nucleotide triplets and their corresponding amino acids. Provided that the given sequence is part of a gene that's properly framed, the processed mRNA would then lead to the assembly of a short polypeptide chain during translation.
He tube feet have a bulb-like structure at one end called the 7)__ and a 8) __ at the other end, which aids in the starfish's ability to attach to surfaces, as well as hold its prey.
Answer:
The tube feet have a bulb-like structure at one end called the ampulla and Podium at the other end, which aids in the starfish's ability to attach to surfaces, as well as hold its prey.
Explanation:
Echinoderms i.e Starfishes have hundreds of tiny projections known as tube feet on the underside of their body. They allow the starfish to move and hunt for food in the ocean.Tube feets are hollow thin walled structures that end in being suction cups and helps in
1.Locomotion
2.Respiration
3.Feeding
Starfishes use tube feet on their arms to help them move, and each tube foot contains what is called an ampulla. These ampulla move water into the tube feet to help stretch them. They operate through water vascular system.
Water vascular system provides the vascular pressure which allows the tube feet to operate. Water enters the system through a sieve-like structure on the upper surface of the animal, called the madreporite. From here it moves into the ring canals and into radial canals and then into the tube feet, which allows them to move.Water also leaves through madreporite.
Through podium the starfish attaches to the surfaces of its prey, such as a snail, clam or oyster, and uses tube feet to capture it, hold it close to its mouth. Once the prey is close and secure, the starfish pushes its stomach out through its mouth to digest the prey.
Mrs. Rodriguez shows her seventh-grade class a video on cellular division
of a germ cell dividing by meiosis and a human zygote dividing by mitosis.
Which of the following might be included in this video as the best
description of the difference in the results of mitosis and meiosis?
Answer:
Mitosis results in daughter cells with a complete set of genes. Meiosis results in daughter cells with half genes.\
(I did the work in my class alr so i know)
A germ cell dividing by meiosis and a human zygote dividing by mitosis, and the main differences are that by the process of mitosis, the human zygote grows in size with the exact same kind of cell, but in meiosis, four haploid gametes are formed.
What is the importance of mitosis in the zygote's development?The meiosis results in four haploid cells, and those are called gametes cells, such as the sperm and ovum from the male and female, respectively. The gametes unite to form the zygote, and then the zygote divides mitotically, resulting in an equal set of chromosome cells, and the cells multiply to form a ball like the morula. The morula then divides further and undergoes modification to form the baby.
Hence, the main differences are that, by the process of mitosis, the human zygote grows in size with the exact same kind of cell, but in meiosis, four haploid gametes are formed.
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Which feature on microscope did Anton van Leeuwenhoek add that enabled him to magnify organisms about 250 times?
•drop of water
•light from oil lamp
•tubes that extend
•polished lenses
Answer:
polished lenses
Explanation:
i am doing a assignment on them right now
Answer:D. Polished Lenses
Explanation:
i got it right
What fossil fuels were formed from buried remains of plants and animals that lived millions of years ago?
Answer:
Coal, crude oil, and natural gas are all considered fossil fuels because they were formed from the fossilized, buried remains of plants and animals that lived millions of years ago. Because of their origins, fossil fuels have a high carbon content.
Explanation:
plsssss help I need it in your own words not copy and pasted from other answers
The male resplendent quetzal bird has evolved to have tail feathers that are approximately 60 cm long. The female quetzal has short tail feathers. Using the quetzal as your example, describe how the mechanism of natural selection may have led to the evolution of the male quetzal’s extraordinarily long tail feathers.
Answer:
The male quetzal could have grown longer tails for breeding purposes.
Explanation:
His tail could be fluttered to impress a female, causing them to mate. If they do, they take turns sitting on the eggs. The long tail feathers of the male would help to keep the eggs safe and protected.
The evidence showing that the chimpanzee genetic code is 96% the same as the human genetic code is an example of ________.
A.
comparative morphology
B.
molecular sequencing
C.
homologous proteins
D.
directional selection
The evidence showing that the chimpanzee genetic code is 96% the same as the human genetic code is an example of molecular sequencing. Therefore, option B is correct.
What is molecular sequencing?Molecular sequencing refers to the process of determining the order of nucleotides or base pairs in DNA or RNA molecules. By comparing the genetic sequences of different organisms, scientists can analyze the similarities and differences between their genetic b.
In the case of chimpanzees and humans, molecular sequencing techniques have revealed a high degree of similarity in their genetic codes, with an estimated 96% similarity.
It supports the idea of common ancestry and demonstrates the close evolutionary relationship between chimpanzees and humans. Therefore, option B is correct.
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In cattle, coat color is inherited through incomplete dominance. Cattle homozygous for red have red coats, cattle homozygous for white have white coats and heterozygous cattle have roan coats. What is the probability of a cattle with a red coat resulting from a roan coat parent and a red coat parent?
Answer:
Probability of having a cattle with a red coat resulting from a roan coat parent and a red coat parent [tex]= 50[/tex] %
Explanation:
Given -
Allele for red color coat be represented by "R"
and the allele for white color coat be represented by "r"
Genotype of red coated cattle is RR
Genotype of white coated cattle is rr
Genotype of roan coated cattle is Rr (Roan color is due to incomplete dominance)
Cross is carried out between roan coat parent (Rr) and red coat parent (RR)
RR * Rr
RR, Rr, RR, Rr
Out of four offspring two are having red coat (RR)
Thus, probability of having a cattle with a red coat resulting from a roan coat parent and a red coat parent would be
[tex]\frac{2}{4} * 100\\[/tex]
[tex]= 50[/tex] %
The probability of a calf with a red coat resulting from a roan coat parent crossed with a red coat parent is 50%, as offspring inherit one allele from each parent and the combination of RW (roan) and RR (red) results in a red coat calf 50% of the time.
Explanation:In cattle, coat color is determined by incomplete dominance, a form of inheritance where the heterozygous phenotype is an intermediate between the two homozygous phenotypes. In this case, red coat color (RR) is homozygous, white coat color (WW) is homozygous, and the roan coat color (RW) is the intermediate, heterozygous phenotype. When a roan coat parent (RW) and a red coat parent (RR) are bred, there is a 50% probability of a calf with a red coat color (RR or RW), because the roan parent can only pass down either the R or the W allele, while the red coat parent can only pass down the R allele. Thus, the resultant genotypes can be either RW (roan) or RR (red), making the chance of a red coat calf 1 in 2, or 50%.
who was the first scientist to discover the white blood cell
Hi there! Hopefully this helps!
----------------------------------------------------------------------------------------------------------------
Answer: Gabriel Andral, a French professor, and William Addison, an English doctor both informed the first classifications of white blood cells.
Mendel examined seven characteristics in his pea plants. He crossed two plants with different forms of a trait (like tall plants and short plants). In every case, the first generation of plants (F1) were __________.
Answer:
dominant
Explanation:
For every trait, there are two types of characters - dominant and recessive which are determined by the combination of the alleles for a given gene.Each gene has 2 types of alleles- one is the dominant allele which always expresses itself that is in both homozygous and heterozygous conditions whereas the other one is the recessive allele which can only express itself in the homozygous conditions. In Mendel's experiments when he crossed plants with different traits he observed that in the F1 generation there was always a single trait that was getting expressed and it was the trait that was being coded by the dominant allele.What Makes Water So Special? Why? When you hear that NASA's space probes are looking for "evidence of life" on other planets, do you know what that means? They are looking for evidence of liquid water. Water is fundamental for all life; without it every living thing would die. Water covers about 70% of Earth's surface and it makes up 65-75% of our bodies (82% of our blood is water). Even if water might seem boring to you-no color, taste, or smell-it has amazing properties that make it necessary for supporting life.
1) How many hydrogen atoms are in a molecule of water?
2) How many oxygen atoms are in a molecule of water?
3) What holds the hydrogen atoms to the oxygen atom?
4)The shading around the molecule represents the relative density of electrons shared by the atoms. What does this indicate about the density of electrons around the oxygen atom as compared to the density of electrons around the hydrogen atoms?
5) Where is the majority of negative charge on the water molecule?
Water (H2O) consists of 2 hydrogen atoms and 1 oxygen atom held together by covalent bonds. The density of electrons around the oxygen atom is higher compared to the hydrogen atoms, and the majority of negative charge is near the oxygen atom.
Explanation:1) A molecule of water (H2O) consists of 2 hydrogen atoms and 1 oxygen atom.
2) A molecule of water (H2O) consists of 2 hydrogen atoms and 1 oxygen atom.
3) The hydrogen atoms are held to the oxygen atom through covalent bonds, where electrons are shared between the atoms.
4) The shading around the water molecule indicates that the density of electrons around the oxygen atom is higher compared to the density of electrons around the hydrogen atoms.
5) The majority of negative charge on the water molecule is located near the oxygen atom.
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Organisms with true radial symmetry A. tend to be highly mobile. B. do not have a distinct head region and tend to be sedentary or passive drifters. C. can be divided into two matching halves along only one plane. D. have their sense organs, mouth, and brain clustered in the head.
Answer:
Option-A
Explanation:
Radial symmetry refers to the symmetry in which the organism can be cut into the same half through any plane which can be observed in the organisms belonging to Cnidarians.
The organism with radial symmetry do not show a distinct head region and are considered to be passive drifters like observed in the corals, sea anemones, starfish.
Thus, Option-A is correct.
Without crossing over:
A. cells could not complete meiosis.
B. meiosis could not produce haploid gametes.
C. only a small number of unique gametes could be produced by a single individual.
D. genetic recombination could not occur.
Answer:
D. Genetic recombination would not occur.
Explanation:
If this did not occur, all individuals would be identical to its parent unless a mutation occurred.
Crossing over is necessary for genetic recombination in meiosis, increasing genetic diversity in gametes.
Explanation:The correct answer is D. Without crossing over, genetic recombination could not occur in meiosis. Crossing over is the exchange of genetic material between homologous chromosomes during prophase I of meiosis. This process creates new combinations of alleles and increases genetic variation.
By crossing over, chromosomes exchange genetic information, which leads to the formation of genetically diverse gametes. This ensures the production of haploid gametes with unique combinations of genes, increasing genetic diversity in the offspring.
If crossing over did not occur, meiosis would produce gametes with the same genetic information as the parent cell. This would limit genetic diversity and reduce the ability to adapt to changing environments.
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Which of the statements about the process of excretion in complex multicellular animals is true?
A. Water and all other molecules are actively transported back into the bloodstream during reabsorption.
B. Selective filtration of the blood occurs as blood pressure forces materials into an extracellular space.
C. During the process of reabsorption, additional toxic compounds and excess ions that were not filtered from the blood initially are removed from the organism.
D. Reabsorption helps to send toxic compounds to the liver so they can be detoxified and turned into usable compounds by the body.
The true statement about excretion in complex multicellular animals is that selective filtration of the blood occurs as blood pressure forces materials into an extracellular space. This occurs in the kidneys where small molecules like water, ions, and urea are filtered out while larger molecules and cells are retained.
Explanation:The process of excretion in complex multicellular animals, such as humans, involves several steps including filtration, reabsorption, secretion, and excretion. The correct statement about this process is option B: Selective filtration of the blood occurs as blood pressure forces materials into an extracellular space. This is the basic mechanism by which the kidneys filter blood, primarily based on blood pressure and capillarity. It is at the glomerulus, a network of tiny blood vessels in the kidneys, that the filtration process occurs. Large molecules and cells are retained in the blood while smaller molecules such as water, ions, and urea are forced into Bowman's capsule and form the glomerular filtrate. Other options mentioned are not entirely accurate in the context of excretion process in complex multicellular organisms.
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An important component of the lamina propria in the upper respiratory system is
Answer:
The mucus glands.
Explanation:
Lamina propria is the name of the connective tissue located in the upper respiratory system and the nose which is a part of the mucosa. The most important component of the lamina propria is the mucus glands.
I hope this answer helps.
Answer:
An important component of the lamina propria in the upper respiratory system is mucus glands.
Explanation:
Lamina propria is a part of mucosa conatining loose connective tissue and in the respiratory system, it has folllowing characteristics :
CapillariesMast cells ( Histamine, serotonin, leucotrienes)Plasma cells (IgAs)Macrophages (cytokines)Mucus glands (mostly mixed , occur in deeper layers of lamina propria and within the submucosa)APC ( induce immune reactions)Lymphocytes (regulators and effector cells)Describe why translation of an mrna can start before transcription of the mrna is complete in prokaryotes but not in eukaryotes.
Answer:
In prokaryotes both transcription and translation occurs in cytoplasm (they lack true nucleus) while in eukaryotes, transcription occurs in nucleus while translation occurs in cytoplasm.Explanation:
1. Prokaryotes do not have nucleus, so both transcription and translation occurs in the cytoplasm, therefor translation start before the completion of transcription.
2. While in eukaryotes, they have true nucleus, and there protein synthesis machinery (ribosomes) and is situated in the cytoplasm.
So in eukaryotes transcription occurs in the nucleus, and after the completion of transcription, mRNA is processed and finally export into cytoplasm for translation.
The translation is one of the primary steps of the central dogma, in which cell synthesis proteins based on the information given by mRNA.
In prokaryotes, the organism that lacks a nucleus, the process of transcription and translation occurs in the cytoplasm.
In eukaryotes, which have a well-defined nucleus, the process of transcription and translation occurs in the nucleus and cytoplasm, respectively.
The prokaryotes are primitive organism, which undergoes transcription and translation simultaneously in the cytoplasm. Thus, the translation of mRNA in prokaryotes can start before transcription.
On the contrary, eukaryotes cannot undergo translation prior to the transcription. The information to proceed ahead is stored in the mRNA, which is released from the nucleus to the cytoplasm.
Thus, prokaryotes can undergo translation and transcription simultaneously.
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As the sun shines on Earth, plants use its energy to complete the process of photosynthesis. Energy is transformed during the process into chemical energy in the form of sugars, such as carbohydrates. However, the energy available for top consumers is much less than that produced by autotrophs. Why is this so?
Answer:
Most of the energy is used up in metabolism
Explanation:
The ________ nervous system controls the skeletal muscles.
Answer:
somatic nervous system
Explanation:
The somatic nervous system (SNS or voluntary nervous system) is the part of the peripheral nervous system associated with the voluntary control of body movements via skeletal muscles. The somatic nervous system consists of afferent nerves or sensory nerves, and efferent nerves or motor nerves.
brainliest pls
Answer:
Somatic nervous system
Explanation: