The options in the question are shown in the image attached to this answer
Answer:
A
Explanation:
A peptide bond is formed between a carboxylic acid and an amine group. These two functional groups must be in the correct orientation before they can react to form the peptide bond.
If we study the images closely, only the amine group and carboxylic acid in option A are correctly positioned for reaction to take place leading to the formation of a third peptide bond.
Amino acids connect by peptidic bonds to form the linear structures of proteins. In the peptidic bond, the amino group joins the carboxylic group, and a water molecule is released. Among the options, A is the correct one.
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Amino acids are organic molecules.
They are composed of a central carbon, one hydrogen atom, one carboxyl group (COOH), one amine group (NH₂), and one R group. The composition of the R group is what makes them different from each other.
Proteins are amino acid polymers linearly arranged and connected by peptidic bonds.
The number of amino acids composing the chain and their order determines the primary structure of the protein.
The protein is synthesized from the amino terminus to the carboxy terminus.
The peptidic bond is the union of two amino acids by their carboxyl and amine groups.
When they get together, a water molecule is released, producing a covalent bond ⇒ CO-NH.
Peptidic bonds only form linear structures, with no ramifications, known as peptides.
In this way, every peptide has a free carboxylic group in one extreme and a free amine group in the other extreme.
Among the given options, the correct position of the dipeptide and the amino acid to form a tripeptide is option A.
By looking carefully at the position of the molecules, we can see that this is the only option in which a carboxylic group and an amine group are facing. This orientation is the only one possible for the peptidic bond to form.COOH and NH₂ must get together, releasing a water molecule, and creating the covalent bond CO-NH.
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Describe the motion of these galaxies (each raisin represents a galaxy in the bread model) relative to one another.
Answer: The Apparent Movement of Galaxies
The expansion of space itself makes it appear as though galaxies are moving apart and causes the spectral lines to shift, changing their colors. The expansion of space causes galaxies to appear to be moving apart from each other.
Explanation: searched up on google
Polysaccharides are
____________is located in the mitochondrial membrane.
a. The citric acid cycle
b. Glycolysis The electron transport chain
c. The electron transport chain.
d. Pyruvic acid
Answer:c
Explanation: I did the same quiz and the answer is c
Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of the decomposition are hydrogen (H2) and oxygen (O2). What is the effect of catalase on the decomposition of hydrogen peroxide? A. It decreases the activation energy needed to start the reaction. B. It decreases the total energy released by the reaction. C. It increases the total energy absorbed by the reaction. D. It changes the ratio of the amounts of the two products.
Answer:
A. It decreases the activation energy needed to start the reaction
Explanation:
Organic catalyst which speed up the rate of organic chemical reaction is living cells are called enzymes.They have specific reaction site called active sites.This must be in prefect shape with the substrate for the organic chemical reaction to take place
When this occurs the minimum amount of energy of reaction to activate or stimulate the the atoms and molecules of the substrate to undergo chemical reaction is lowered.This energy of reaction is celled activation energy.
Catalase thought its active sites lowers the activation energy so that the molecules of H2O2 could break down to C02 and H2 faster,thereby reducing the time for theses product to form.The is the general roles of enzyme.To increase the rate of chemical reaction,by reducing the activation energy.
When viewing a specimen in a microscope, which parts allow you to physically SEE the image?
stage
eyepiece Only
objective only
eyepiece and the objective
Answer:
When viewing a specimen in a microscope, what allows to physically see the image are both lenses, eyepiece and objective.
Explanation:
In optical microscopy, the lenses used to observe microscopic samples play an important role and are necessary for the study of such samples.
- An objective lens is the first to capture the image, providing clarity and proper focus, as well as eliminating color or shape distortions.
- Eyepiece lens obtains the image provided by the objective lens and enlarges it, so that the observer can appreciate the characteristics of the specimen studied.
Regarding other options:
Stage allows to see the prepared sample, ready for its study, but the microscopic characteristics are not appreciated. The eyepiece and objective work together to provide a proper microscopic image.Molecules cannot react chemically unless they are......
a) polar b)solvents c)active d)in solution
*PLEASE ANSWER WITH EXPLANATION.*
Answer:
c) active
Explanation:
When in an atom the outermost shell is not full (eg. 2,8,3 ; here in the last shell it is not filled completely and needs 5 more electrons to complete it ) then the atom becomes active and molecules doesn't react unless and until an atom is active .
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Which is the role of the electron transport chain in the process of photosynthesis? A. Cycling electrons between photosystem and photosystem ll B. Adding energy to the electrons that enter photosynthesis C.Carrying electrons from photsystem I1, to photosystem to NADP O D. Removing electrons from the chloroplasts
Answer:
c.
Explanation:
Because youcaring electrons from photosystem II, to photosystem I, to NADP+
I took this test about it hope that helps :D
The role of the electron transport chain in the process of photosynthesis will be carrying electrons from photosystem 1, to photosystem to NADP. The correct option is C.
What is electron transport chain?An electron transport chain is a collection of protein complexes and certain other compounds that donate electrons from electron donors to electron acceptors via redox reactions and couple this electron transfer with the transfer of protons across a membrane.
Photosystems I and II are protein complexes found in the thylakoid membrane.
Their function is to capture high energy electrons from chlorophyll and pass them on to a series of electron carriers before splitting water to form oxygen and hydrogen ions and producing NADPH.
Electron transport contributes to the formation of a proton gradient, which drives ATP production and also stores energy in the reduced coenzyme NADPH.
This energy is used to power the Calvin Cycle, which produces sugar and other carbohydrates.
Thus, the correct option is C.
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which of the following characteristics would be most accurate in hierarchically classifying a newly discovered organism?
habits
behavior
generic material
reproductive strategies
A model of an animal cell is shown above. Eukaryotic cells, like this one, have compartmentalization that allows for efficiency in the cell processes. Identify the names, labels, and roles of three eukaryotic organelles that are involved in the transport, packaging, and export of a protein synthesized on a bound ribosome in this cell.
Answer:
Three eukaryotic organelles that are involved in the transport, packaging, and export of a protein synthesized on a bound ribosome in this cell are -
Endoplasmic reticulum Golgi bodiesRibosomesExplanation:
ENDOPLASMIC RETICULUM - The endoplasmic reticulum ( ER) is a broad, dynamic structure that serves many cell functions, including the storage of calcium, protein synthesis and metabolism of lipids. Separate regions, consisting of tubules, sheets and the nuclear envelope, perform the diverse functions of the ER.GOLGI BODIES -: A membrane bound organelle found in most cells is the golgi apparatus. Before secretion, it is responsible for packaging proteins into vesicles and thus plays a key role in the secretory pathway.RIBOSOMES -: The organelles which aid in protein synthesis are ribosomes. For many cell activities, protein is necessary, such as damage repair and other chemical processes.A ribosome is composed of two subunits:
the small ribosomal subunits- these read the mRNA. The large ribosomal subunits - form amino acid polypeptide chains.Hence , the labelled diagram of eukaryotic cell is attached below.
Which sample is eukaryotic
Answer:
its between A or D, becuase example C looks way to much like a prokaryotic cell. Sorry its not much help.
Explanation:
A student states that exercise will affect the number of times a person can squeeze a clothespin in a certain amount of time. An experiment is carried out to test this hypothesis. One group of ten students sits quietly before squeezing a clothespin as many times as possible during a one-minute interval. A second group of ten students does 25 jumping jacks before squeezing a clothespin as many times as possible during a one-minute interval. What is the independent variable?
Answer:
EXERCISE
Explanation:
In an experiment, the independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable outcome.
In this case, an experiment is carried out to test the hypothesis that "exercise will affect the number of times a person can squeeze a clothespin in a certain amount of time". The experiment contained two groups (one group sits quietly before squeezing a clothespin as many times as possible and the other does 25 JUMPING JACKS before squeezing a clothespin as many times as possible).
The independent variable is the EXERCISE (jumping jacks) that was changed for each group in the experiment.
Cellulose helps plánts:
grow more quickly
stand up straight
take in and release gas
make food
Answer:
stand up straightExplanation:
Cellulose is a tough substance that helps strengthen the sctructure of a plant.
Does respiration expend more energy than photosynthesis?
Answer:
Explanation:
Photosynthesis vs Cellular Respiration Photosynthesis and cellular respiration are two basic metabolic processes occurring in the energy conversion of ecosystems. During photosynthesis, carbon dioxide and water are used in the synthesis of organic compounds with the aid of sunlight. This organic compounds can be used by cells as food. During cellular respiration, energy in the form of ATP is produced by breaking down food. The main difference between photosynthesis and cellular respiration is that photosynthesis is an anabolic process, where the synthesis of organic compounds occurs, storing energy whereas cellular respiration is a catabolic process, where the stored organic compounds are utilized, producing energy.
How long ago do scientists believe the continents formed Pangaea?
about 135 million years ago
about 180 million years ago
about 300 million years ago
about 4.5 billion years ago
The scientists believe the continents formed Pangaea about 300 million years ago. The correct option is C.
What is Pangaea?According to National Geographic, the Pangaea theory proposed that the tectonic plates that make up the planet's external crust glided over the inner layers until they consolidated as a landmass encircled by a huge ocean called Panthalassa.
After a while, the Angaran continent near the North Pole began to move south and combined with the northern part of the expanding Euramerican continent, forming the Pangea supercontinent. This process was completed approximately 300 million years ago.
Alfred Wegener observed the same thing in 1912 and proposed that the continents were once scaled down into a single protocontinent known as Pangaea.
Thus, the correct option is C.
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___ is one of the two types of transport tissue in vascular plants. It transports water from the roots of a plant to the stems and leaves.
A. Xylem
B. Stomata
C. Phloem
D. Chloroplast
Answer:
Xylem
Explanation:
Xylem is vascular tissue that transports water and dissolved minerals from roots to stems and leaves. This type of tissue consists of dead cells that lack end walls between adjacent cells.
It is recommended that people at risk for serious flu complications be vaccinated so that their bodies
will produce
(1) antigens to fight the flu virus
(2) toxins to fight the infection caused by the flu virus
(3) antibodies against the flu virus
(4) antibiotics to reduce symptoms caused by the flu virus
(3) antibodies against the flu virus
Match the part of the viral replication cycle with the order in which it occurs
Column A
Column B
1.
d
1 st
a. viral genome is replicated using host cell's machinery
2.
2nd
b. virus penetrates and inserts genome into cell
3rd
C virus attaches to cell surface
3. 4. 5.
4th
d. new viruses are assembled within host cell
5th
e. the cell ruptures and releases new viruses to infect new
cells
6.
6th
f. viral proteins are synthesized within host cell
Answer:
1. c. virus attaches to cell surface
2. b. virus penetrates and inserts genome into cell
3. f. viral proteins are synthesized within host cell
4. a. viral genome is replicated using host cell's machinery
5. d. new viruses are assembled within host cell
6. e. the cell ruptures and releases new viruses to infect new cells
Explanation:
First, the virus attaches to the cell. Then it penetrates the cell membrane and inserts its genome inside the cell. The virus relies on the cell machinery to synthesize its proteins, and also to replicate its genome.
With these components being synthesized and replicated, new viral particles are assembled inside the host cell. Eventually, the cell ruptures, and the newly assembled viruses are released and able to attach to new cells to repeat the cycle
What has happened to our system of classification as technology has become more
advanced?
Answer:
Technological advances have had a huge impact on biological classification systems overtime, providing new information on biological connections between species past and present.
Explanation:
The pupils or the dark centers of your eyes, get larger when you move into a dark area. What characteristics of living things does
this change demonstrate?
A)
Cellular Organization
B)
Response to Stimuli
Reproduction
D)
Growth and Development
Answer:
Response to stimulus
Explanation:
I think
Which types of friction are observed in this avalanche?
Answer:
kinetic is one of them.
Which process is this?
Answer:nitrogen probably because I see carbon the both c’s
Explanation:
It’s says in the image
Which study would have produced the least trustworthy results?
Answer:
A
Explanation:
Atmospheric Layer Describe what happens to the temperature as altitude increases. Be sure to note specific altitudes where abrupt changes occur and how each layer is heated. Troposphere Stratosphere Mesosphere Thermosphere Exosphere Ionosphere
Answer:
Kindly Check explanation section.
Explanation:
The atmosphere has zones and each zones has it characteristics with respect to atmospheric conditions such as temperature, pressure and humidity.
So, the question only asked us to compare or show the temperature describe what happens to the temperature as altitude increases in each region of the atmosphere.
(1). Troposphere: the region known as troposphere in the atmosphere has a lower Temperature. The troposphere is a region in which the earth gets its radiation and re-radiates its electromagnetic radiation to give heat which later cools down.
(2). Stratosphere: what occurs in the region known as the stratosphere in the atmosphere is that there will be absorption of UV by the O3 layer which will in turn INCREASES THE TEMPERATURE.
(c). The Mesosphere: in this region of the atmosphere the temperature DECREASES.
(d). Thermosphere: there is surely an INCREASE IN TEMPERATURE in this region because of solar radiation.
(e). Exosphere: there is an INCREASE IN TEMPERATURE in this region too and the temperature increament is caused by ionization.
(f). Ionosphere: in this region, we have an INCREASE IN TEMPERATURE too be side of the solar radiation.
What does it take to become a king?
Answer:
Alternatively, an individual may become monarch by right of conquest, acclamation or a combination of means. A monarch usually reigns for life or until abdication. If a young child is crowned the monarch, a regent is often appointed to govern until the monarch reaches the requisite adult age to rule.
Explanation:
pls give brainliest i need 1 more to be an expert
Coal is a metamorphic rock true or false
Answer:
true
Explanation
.......................................
After a cell was treated with a certain chemical, its Golgi apparatus stopped functioning. Which cellular process was immediately affected by this change?
Answer:
Sorting and packaging of proteins
Explanation:
The golgi appartues is in charge of Sorting and packaging of proteins so if it would to stop the protenis wouldn't be packged
How does the cell membrane help maintain health in life
Answer:
The cell membrane controls the substances that enter and exit the cell
Explanation:
The cell membrane defines the boundaries of the cell, separating the internal components from the external environment.
The membrane is a semi-permeable barrier that lets some substances in and out, but not others.
Therefore, the cell membrane controls many of the activities of the cell. As a result, it is crucial to maintain the normal functioning of the organism
You are sitting by a lake. You drop a leaf on the lake and notice that it floats on the top of the water. Which of the following properties of water could help explain what you observed?
Answer:
Issuen Shingeki... Messatsu!
Explanation:
What you've just witnessed is something called "Buoyant force".
Buoyancy is the upthrust in the particles between the Atoms of the leaf and the water. They have the opposite charge, allowing them to repel each other- Ultimately allowing the leaf to float.
Or simply, the leaf is lighter and is less dense.
Answer:
a.
Explanation:
It has a strong tension.
Forensic Science Please Help!!
What are some of the ways that a document examiner might try to match a questioned document to a specific typewriter? What aspects might they look at?
Answer:
Some of the ways you could try to match a questioned document to a specific typewriter would be to match the handwriting, you could also look at different changes made in the handwriting.
Some of the ways you could try to identify a questioned document to a specific typewriter would be to match the handwriting, you could also look at different alterations made in the handwriting.
Why is forensics important?The criminal justice system cannot function without the contributions of forensic science. Forensic scientists collect evidence from crime scenes and other locations, assess that evidence, and then create objective conclusions based on their findings. These conclusions can either aid in the investigation and conviction of criminals or clear an innocent individual of any wrongdoing.
Studies of handwriting for forensic purposes are an essential component of the legal system. These examinations seek to ascertain whether or not handwritten documents can be traced to particular writers by making a comparison to known exemplars of that handwriting.
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The step in photosynthesis where organisms capture CO2 in order to convert it into glucose