The cell walls of bacteria are made up of peptidoglycan.
Peptidoglycan is a polymer that makes up the cell walls of bacteria. It is composed of repeating units of two sugars, N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM), which are cross-linked by short peptide chains.
This structure provides strength and rigidity to the cell wall, protecting the bacterial cell from osmotic pressure and other external stresses. Peptidoglycan also serves as a target for antibiotics, such as penicillin, which inhibit its synthesis by interfering with the cross-linking of the peptide chains.
Because peptidoglycan is present in most bacterial cell walls but absent in eukaryotic cells, it represents a useful target for developing antimicrobial agents.
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which organ releases and stores bile to digest fats?
The liver is the organ releases and stores bile to digest fats. Bile is a greenish-yellow fluid that is produced by the liver and stored in the gallbladder. It contains a mixture of bile salts, cholesterol, and other compounds that help to emulsify fats, making them easier to digest and absorb in the small intestine.
When fat enters the small intestine, the gallbladder contracts and releases bile through the common bile duct into the duodenum, the first segment of the small intestine. Bile then helps to break down fats into smaller droplets, which can be more easily digested by pancreatic lipase and other enzymes. Without bile, the digestion and absorption of fats would be much less efficient, which could lead to malnutrition and other health problems.
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On February 21, a student observes that the Moon cannot be seen in the clear
night sky. On what date will the student not be able to see the Moon again in the
clear night sky?
A. February 28
B.March 7
C.March 14
D.March 21
Answer:
Okay so the answer is
C...
On February 21, a student observes that the Moon cannot be seen in the clear night sky. The date when the student is not able to see the Moon again is on March 21. The correct option is D.
What is the moon?The moon is the only natural satellite of the earth. It is white and gray and visible from the earth on nights only. It is the fifth-largest satellite in the solar system.
The moon has different phases seen from the earth because the moon revolves around the sun. The four phases have been named full moon, no moon, C moon, and half moon.
In 28 days, the moon is not visible for one day, then the other day it is visible and C-shaped. The student was seen on February 21.
21 + 27 day means 21 march.
Thus, the correct option is D. March 21.
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When sweat glands become more sensitive to aldosterone after acclimation, they:
-reduce the volume of sweat that is secreted
-secrete sweat at a lower core temperature
-increase the volume of sweat that is secreted
-reduce sweat's sodium content
When sweat glands become more sensitive to aldosterone after acclimation, they increase the volume of sweat that is secreted.
Aldosterone is a steroid hormone that is produced by the adrenal gland and is responsible for regulating sodium and water balance in the body. Aldosterone signals the kidneys to reabsorb sodium and excrete potassium. It also causes sweat glands to increase their production of sweat. When an individual acclimates to a warm or hot environment, their sweat glands become more sensitive to aldosterone. This increased sensitivity results in the sweat glands producing more sweat, which helps the body to cool down and maintain its core temperature.
The question was about the effect of sweat glands becoming more sensitive to aldosterone after acclimation. The answer is that they increase the volume of sweat that is secreted. This adaptation allows individuals to tolerate hotter environments and maintain their performance in those environments.
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PLSSSSSSS HELPPPPPPP ASAPPPPP
What describes the coastal photic zones?
Photic Zone is the top layer, closest the outer layer of the sea and is likewise called the daylight layer. The water in this area receives enough light to allow for photosynthesis.
The area of water that can be penetrated by light is called the photic zone. Because of this, the photic zone is characterized by the presence of plant life, particularly phytoplankton and larger attached algae.
The ocean is typically divided into three zones, each of which is given a name based on how much sunlight it gets: the euphotic, dysphotic, and photic zones.
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the active site for many enzymes group of answer choices involves amino acids that are brought into close proximity by extensive protein folding and may require a prosthetic group such as a metal ion. usually depends on only one amino acid. involves amino acids that are brought into close proximity by extensive protein folding. contains amino acids that are contiguous to one another along the primary sequence of the protein. may require a prosthetic group such as a metal ion.
The active site for many enzymes usually involves amino acids that are brought into close proximity by extensive protein folding and may require a prosthetic group such as a metal ion.
let's look at the answer in detail:
An enzyme is a macromolecule made up of amino acids that catalyzes a biochemical reaction by lowering the activation energy. A substrate binds to the active site of the enzyme, which then catalyzes the conversion of the substrate into the product.
1. The structure of an enzyme can be divided into two parts: the apoenzyme and the cofactor. The apoenzyme is the protein part of an enzyme, while the cofactor is the nonprotein part.
2. In general, enzymes require cofactors to be fully functional. There are two primary types of cofactors: metal ions and coenzymes. The structure of an enzyme's active site is determined by the amino acid sequence of its protein component, and the active site's shape determines which substrates will bind. Because the active site is so precise, it is thought that enzymes have developed to have exactly the right size, shape, and charge distribution to bind to their specific substrate.
3. Enzymes can be activated or deactivated by other enzymes, and their activity can be influenced by a variety of environmental variables, such as temperature, pH, and concentration.
Therefore, The active site for many enzymes usually involves amino acids that are brought into close proximity by extensive protein folding and may require a prosthetic group such as a metal ion.
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The endosymbiotic theory of eukaryote evolution states that organelles in eukaryotic cells are derived from prokaryotes. Which statement is the strongest evidence in support of the endosymbiotic theory?
A Eukaryotic organelles are similar in size and shape to prokaryotes.
B Eukaryotic organelles can reproduce though sexual reproduction.
C Eukaryotic organelles stop functioning outside of a plant cell.
D Eukaryotic organelles contain DNA similar to prokaryotic DNA.
Answer:
C. Eukaryotic organelles stop functioning outside of a plant cell.
Explanation:
Because Certain functions are carried out within different structures of the cell. These structures ... Organelles in Eukaryotic Cells. 5. Model 3 – Animal Cell vs. Plant Cell. Plant cells have a cell wall, a large central vacuole, chloroplasts, and other specialized ... Chloroplasts are the organelles that carry out photosynthesis. ... Despite differences in structure and function, all living cells in multicellular organisms .It is these cells, tissues, and organs that carry out the dramatic lives of plants. Plant Cells. Plant cells resemble other eukaryotic cells in many ways. ... are enclosed by a plasma membrane and have a nucleus and other membrane-bound organelles. ... The different types of plant cells have different structures and functions. Hope this helps you!
Write a paragraph to justify Earth’s past Plate movements by explaining three pieces of evidence presented in the article. Highlight each of the three pieces of evidence.
Fossils, galciers and complementary coastlines are the evidences of earth's past plate movements.
How justify Earth’s past Plate movements?Modern continents hold clues to show their past events such as fossils, glaciers, and complementary coastlines. These evidences help in revealing about the plates that once fit together. Fossils tell us when and where plants and animals once existed.
So we can conclude that fossils, galciers and complementary coastlines are the evidences of earth's past plate movements.
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Question 19
Use the pedigree below to answer questions.
The following pedigree shows a family that is affected by a genetic disorder.
Is this pedigree dominant or recessive?
A
Recessive
B.
Dominant
P
What is the term for the result when a single chromosome containing one strand of DNA divides itself into two new chromosomes and two identical copies of DNA are created? Select one: a. twin chromosomes b. sister chromatids c. sister chromosomes d. twin chromatids
PLEASE HELP
Answer:
The correct answer is - option B. sister chromatids.
Explanation:
When a one strand DNA of a chromosome replicates itself into two identical copies of DNA formed, these two identical DNA copies are called as sister chromatids.
Dyad is a pair of sister chromosomes and each sister chromosome have two chromatids. The formation of the sister chromatids takes place in the S phase of interphase which is also called the synthesis phase.
Thus, the correct answer is - option B. sister chromatids.
Answer:
b
Explanation:
took the quiz
Land plants no longer required water as a medium for reproduction with the evolution of. 1 fruits and roots, 2 flowers and leaves, 3 cell walls and rhizoids, 4 lignified stems, 5 seeds and pollen
Land plants no longer required water as a medium for reproduction with the evolution of seeds and pollen. Seeds and pollen are specialized structures that allow plants to reproduce without the need for water.
This development has allowed plants to colonize a variety of habitats on land, including arid environments, where water is scarce. Land plants evolved from aquatic ancestors, and the earliest land plants likely required water for reproduction. However, as plants adapted to life on land, they developed structures that allowed them to reproduce without water. Fruits and roots are important structures for land plants, but they are not directly involved in reproduction.
Flowers and leaves are also important for land plants, but they evolved after seeds and pollen and are not required for reproduction in all plant species. Cell walls and rhizoids are important adaptations for land plants, but they are not directly related to reproduction. Lignified stems are important for structural support in land plants, but they are not directly involved in reproduction.
Therefore, the correct answer is 5 seeds and pollen.
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Living things use energy:
- for activities and bodily functions, like moving and
digesting
-as the building blocks of their bodies
-all of the above
Answer:
for activities and bodily functions like moving and digestion
Explanation:
It is because moving and digestion are energy requiring activities
extra information
cell is know as the building blocks of body
hope it helps u
When a substance is adapted to meat, amino acids are produced.
What is this substance?
Based on what we have learned so far, list an example of: 1. atom? (Hint look at the picture or think of the periodic table) 2. molecule ? 3. macromolecule? PLEASE ANSWER IM SO STRESSED
Explanation:
An atom is like sodium, Na. It exists singly as atoms.
Molecules, a combination of some atoms, can be elements or compounds. Element molecules are like oxygen (O2) and compound molecules are like carbon dioxide (CO2).
Macromolecules are complex structures made of many atoms joined by strong bonds, like diamond which is made of many carbon atoms joined by very strong covalent bonds.
Which best explains how and why scientific knowledge continually expanded and improved
Answer:
Which best explains how and why scientific knowledge is continually expanded and improved? The scientific process flows in one direction and finds only facts that support a scientist's original idea. The scientific process is cyclical so that new facts inspire questions that lead to new studies.
Explanation:
Brainlist???
Which part of a lake is most likely to be aphotic?
A. Benthic zone
O B. Littoral zone
C. Limnetic zone
O D. Biotic zone
Answer: a cuz it is the deepest bottom
Explanation:
not b cuz plants grow there
c is shallow area
Answer: A
Explanation:
2. The breeding of two plants is called a
crossing over
cross
intertwining
mixing
Answer:
I am by no means 100% on this but I think its Cross, its usually called crossing breeding but out of those i would say cross.
I Hope This Helps :)
Select the correct answer. A force of 15 newtons is applied to both Object A with a mass of 25 kilograms and Object B with a mass of 50 kilograms. What is true about the acceleration of Object A and Object B? A. Acceleration of Object A is four times that of the acceleration of Object B. B. Acceleration of Object A is the same as the acceleration of Object B. C. Acceleration of Object A is half the acceleration of Object B. D. Acceleration of Object A is twice that of the acceleration of Object B.
By Newton's second law
F=ma , F=force (unit= N)
m=mass (Kg), a=acceleration (m/s2)
By applying the formula, we can calculate acceleration
a = F/ m
For object A,
Force =15N, Mass=25kg
a= 15/25
acceleration, a=0.6m/s2
For object B,
Force=15N, Mass=50 kg
a=15/50
acceleration,a=0.3m/s2
By calculation, the acceleration of object A is twice the of object B.
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Answer:
See image
Explanation:
Plato
the most anteriorly placed permanent teeth are called ______.
The most anteriorly placed permanent teeth are called incisors. Incisors are critical for biting, cutting, and speech.
Incisors are the front teeth in the human mouth and are used for biting and cutting food. There are eight incisors in total, four on the upper jaw and four on the lower jaw, and they are the first teeth to erupt in the mouth. The incisors are located at the front of the mouth and are characterized by their sharp, chisel-like edges, which are used for cutting food. They are also important for speech, as they help to form certain sounds.
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What is health care insurance
Answer:
Health insurance or medical insurance is a type of insurance that covers the whole or a part of the risk of a person incurring medical expenses. As with other types of insurance, risk is shared among many individuals
Scientists use many resources to piece together the history of life on Earth. The fossil record is one source of information that can help scientists understand the way life on Earth has changed over millions of years. What does the fossil record tell us about the history of different species on Earth?
Answer:
See explanation
Explanation:
Fossil records contain an extensive detail of the evolution of various species on earth which have been preserved in the remains of these organisms or imprints that organisms that existed long ago must have left in sedimentary rocks.
Fossil records basically tell us about the past. They tell us about the species that once existed on earth. They also tell us how long these species existed and how the were related to other species.
This information help us to work out how these organisms lived and the environment where they lived.
Answer: B
Species remain the same over time.
Explanation:
Umm.. What is the answer then please help
Answer:
c
Explanation:
melissa recently noticed that she has more body hair and is starting to get pubic hair. these change are known as:
Melissa is experiencing signs of puberty, specifically the development of body hair and pubic hair.
During puberty, the body goes through various physical changes as it transitions from childhood to adulthood. One of the prominent changes is the development of secondary sexual characteristics, which include the growth of body hair and the appearance of pubic hair.
The growth of body hair, such as an increase in the amount and thickness of hair on the arms, legs, underarms, and other parts of the body, is a normal part of sexual maturation. It is influenced by hormonal changes, particularly the increase in androgen hormones like testosterone in both boys and girls.
Additionally, the development of pubic hair, which refers to the hair that grows in the pubic region, is another indicator of puberty. It is typically one of the early signs of sexual maturation and occurs in both males and females.
These changes in body and pubic hair are part of the natural progression of puberty and signify the onset of physical maturation and sexual development.
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What are somw factors that will affect how well enzyme works
Answer:
Enzyme activity can be affected by a variety of factors, such as temperature, pH, and concentration. Enzymes work best within specific temperature and pH ranges, and sub-optimal conditions can cause an enzyme to lose its ability to bind to a substrate
Explanation:
mitosis is most similar to because in both stages, . choose one: a. meiosis i, sister chromatids separate. b. meiosis ii, homologous chromosomes separate. c. meiosis i, homologous chromosomes separate. d. meiosis ii, sister chromatids separate.
Sister chromatids separate in both stages, making meiosis II and mitosis most similar to one another. Sister chromatids split during meiosis II and mitosis.
What other cell cycle is most like mitosis?As opposed to meiosis I, where the chiasma connecting two homologous chromosomes lines up on the metaphasal equator, meiosis II aligns the centromere between two sister chromatids on the equator.
DNA duplication occurs during both meiosis and mitosis in a cell. Each chromosome, or strand of DNA, is replicated and kept connected, creating two sister chromatids for each chromosome. Meiosis and mitosis both aim to divide the nucleus and its DNA content between two daughter cells.
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: DNA is recovered from a suspected dead soldier. A paternity test is done to identify his parents and the results are shown in the given figure. Which Parents are the likely parents of the soldier? Soldier Parents A B Parents C D Parents | Parents E F G H II TIN I O O O O Parents C and D Parents E and F Parents G and H Parents A and B
The likely parents of the soldier are Parents A and B.
This is because the DNA of the soldier matches the DNA of Parents A and B.
The DNA of the other parents (C, D, E, F, G, and H) does not match the DNA of the soldier, therefore they are not the likely parents of the soldier.
It is important to note that DNA is unique to each individual and is inherited from both parents. In a paternity test, the DNA of the suspected parents is compared to the DNA of the child to determine if there is a match.
If there is a match, it is likely that the suspected parents are the biological parents of the child. In this case, the DNA of Parents A and B matches the DNA of the soldier, indicating that they are the likely parents of the soldier.
In conclusion, the likely parents of the soldier are Parents A and B, as their DNA matches the DNA of the soldier.
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18. Which of the following minerals can be found in Rhyolite?
Answer:
is made up of quartz, plagioclase, and sanidine, with minor amounts of hornblende and biotite. Trapped gases often produce in the rock. These often contain crystals, opal, or glassy material
Explanation:
deficiency symptoms of molybdenum in photosynthesis
Answer:
Molybdenum deficiency symptoms in most plants are associated with a build-up of nitrate in the affected plant part. This is a result of poor nitrate reductase activity. Symptoms include: pale leaves with interveinal and marginal chlorosis (yellowing) and necrosis (scald);
Molecules used forgrowth and repair______,and molecules used forenergy_______.A. become part of the body, are lost as CO2 and H2OB. become CO2 and H20. becomepart of the bodyC. become ATP. become C6H1206D. become C6H1206, become ATP
Molecules used for growth and repair become part of the body, and molecules used for energy are lost as CO2 and H2O.
if you were looking at a model of a hollow fluid filled ball of animals cells you would identify it as a
If you were looking at a model of a hollow fluid-filled ball of animal cells, you would identify it as a blastula, which is the early stage of embryonic development in many animals.
The blastula is formed after a series of cell divisions and the differentiation of cells into two distinct layers: the inner cell mass, which will give rise to the embryo proper, and the outer layer of cells, which will form the trophoblast and give rise to the placenta.
In some animals, the blastula is followed by the formation of a gastrula, which involves the formation of a primitive gut or digestive tract.
During gastrulation, the blastula undergoes complex folding and invagination to form the three germ layers: the endoderm, mesoderm, and ectoderm.
These germ layers give rise to all the different tissues and organs of the developing embryo, and the process of gastrulation is a critical step in animal development.
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The primary visual cortex is located in the parietal lobe. please select the best answer from the choices provided true false
False. Only a tiny piece, perhaps 1 cm long, extends over the next pole onto the lateral surface of the occipital lobe, where the main visual cortex is located.
The neocortex, the largest component of the human brain, is responsible for the majority of our cognitive and perceptual processes. The area of the neocortex that receives visual input from the retina is known as the primary visual cortex. The principal area of the brain responsible for receiving, integrating, and processing visual information received from the retinas is known as the visual cortex. It is located in the most backward part of the brain, in the primary cerebral cortex's occipital lobe.
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Answer:
FALSE
Explanation: