Answers
Answer:
Proteins have four levels of organization. Primary structure refers to the linear sequence of the amino acids connected by the peptide bonds. The secondary structure consists of local packing of polypeptide chain into α-helices and β-sheets due to hydrogen bonds between peptide bond – central carbon backbone.
Explanation:
Secondary structure is the level of organization in protein structure where are hydrogen bonds within molecules.
The secondary structure is the folding that the polypeptide chain adopts thanks to the formation of hydrogen bonds between the atoms that form the peptide bond.
Hydrogen bonds are established between the -CO- and -NH- groups of the peptide bond (the first as an H acceptor, and the second as an H donor).
In this way, the polypeptide chain is capable of adopting lower free energy conformations, and therefore more stable.
Several types of conformations can be distinguished that determine the secondary structure of a protein :
α-helices.β-sheets.
Therefore, we can conclude that secondary structure is the level of organization in protein structure where are hydrogen bonds within molecules.
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Related Questions
A proton is
Which of the following completes the sentence above?
A
located in the orbital of an atom.
B
a part of an atom that does not have a charge.
C
a part of an atom that can lose an electron and become negatively charged.
D
the part of an atom counted to determine the atomic number of an element.
westion 1 of 5
Run corint
Answers
Answer:
D the part of an atom counted to determine the atomic number of an element
Mass will increase as..?
Answers
[tex]\huge\bold\red{ƛƝƧƜЄƦ:-}[/tex]
According to Newton’s second law of motion, applied force is directly proportional to the rate of change of momentum.
Momentum is basically the product of mass (m) and speed (v) of an object.
To Newton, this simply meant that if he pushes his triangular prism its speed will vary. Why speed and not mass? Because mass is constant, duh! At least that’s what everyone believed.
So far so good?
Now I ask you a question
What if I go on applying some force on an object?
Using Newton’s second law, the answer is: it’s speed goes on increasing;
which is absolutely correct!
And this result did not hurt anyone until Special Relativity came onto the main stage of Physics:
You see, the problem here is that according to Special Relativity the speed of light is the universal speed limit. No object can ever travel faster than light.
So what do we do now? We know for sure that Newton’s second law is correct.
As we know that force changes momentum: a product of mass and velocity. If velocity cannot be increased beyond “c” let’s increase the mass.
I’ll introduce something called the Lorentz factor here:
γ=11−v2c2√
applying this factor to mass:
m=m01−v2c2√
m0: is the rest mass
m = mass when the object is moving at velocity v
For v<<<c, the denominator is approximately equal to 1. However, if the speed starts getting really close to the speed of light (let's say 0.9c) the value of m gets huge.
Simply put, if the velocity increases, the object gets heavier thus making it difficult to increase its speed further.
And so, the object is never able to achieve the speed of light.
ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘꜱ❤12. Some viruses attack cells by inserting their own DNA into the host cells’ DNA. Why might it be simpler for these viruses to attack prokaryotic cells than eukaryotic cells A. Prokaryotic cells have less DNA than eukaryotic cells.
* B.
The cell wall in prokaryotic cells is a less effective barrier.
* C.
The rapid growth of prokaryotic cells generates more viruses.
* D.
Unlike eukaryotic cells, prokaryotic cells do not have a nucleus.
Answers
Answer:
DNA in eukaryotic cells lie within the nucleus. This DNA has a membrane protecting it from the outside. This means that the virus would have a harder time getting to the DNA to insert its DNA in a Eukaryotic Cell.
I hope this is helpful somehow
Unlike eukaryotic cells, prokaryotic cells do not have a nucleus.
What are prokaryotic cells and eukaryotic cells?Prokaryotes are organisms whose cells lack a nucleus and other organelles. Eukaryotic cells have a membrane-bound nucleus.
Eukaryotic cells have a separate organelle named nucleus (plural: nuclei) which is a double membranous structure meant for the storage of genetic material i.e. chromosomes (DNA). Prokaryotes on the other hand have an irregularly shaped structure named nucleoid instead of nucleus. All the genetic material of the prokaryotes is within the nucleoid. Unlike nucleus, nucleoid does not have any nuclear membrane & it is spread in the cytosol freely.
Hence, option D is the correct answer.
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Landscapes that have been shaped largely by the dissolving power of groundwater are said to have________?
Answers
Answer:
Karst Topography
HOPE THIS HELPS ;)
The nervous system includes the brain. At what level of organization is the brain?
A.Cell
B.Tissue
C.Organ
D.Organ system
Answers
Answer:
C. Organ
Explanation:
The Brain is an organ.
A gold bar has a volume of 4.7cm cubed and a density of 19.3g/cm cubed. What is the mass?
Answers
Answer:
90.71g
Explanation:
multiply 4.7 time 19.3 to get 90.71grams
PLZ HELP YA'LL Which terms correctly identify the indicated structures in this sketch of a cell viewed under a microscope? WHOEVER ANSWERS GETS BRAINEST 16 POINTS
Drag and drop a term to match each label.
A
B
C
D
E
F
Answers
B) Chloroplast
C) Cell Wall
D) Mitochondria
E) Peroxisome
F) Endoplasmic Reticulum
Answer:
A) Vacuole
B) Chloroplast
C) Cell Wall
D) Mitochondria
E) Peroxisome
F) Endoplasmic Reticulum
Explanation:
what would happen if glycosis stopped happening in a cell
Answers
Answer:
cells lose their ability to maintain their sodium-potassium pumps, and eventually, they die.
Explanation:
If glycolysis is interrupted, these cells lose their ability to maintain their sodium-potassium pumps, and eventually, they die. The last step in glycolysis will not occur if pyruvate kinase, the enzyme that catalyzes the formation of pyruvate, is not available in sufficient quantities
How long does your cerebrum take to fully develop?
Answers
Answer:
about nine mouths hope this helps
Explanation:
How do organisms meet their needs and respond to threats in their environment?
Answers
Living organisms have some senses (sight, smell, touch, taste, etc) that help them to detect changes in their external environment, as well as their internal balance and respond to them.
which statement explains one way that minerals form? o they are mined from rocks. o they are produced from molten minerals. o they are grown in a laboratory. o they are washed up on a seashore. HURRY IM TIMED!!!!!!!!
Answers
Answer:
I believe is They arecrystaluzed from a solution
Explanation:
Answer:
B. they are produced from molten minerals
Explanation:
Read and understand the questions and answer based on the instructions given.
A. True or False. Write TRUE if the sentence is correct, otherwise, write FALSE.
1. Wash the funnel, stir stick, blender lid, and other removable parts of the blender with liquid soap
and water
2. Wash all the removable pieces of the food processor in cold water with a strong dish soap.
3. Wipe up stethoscope starting at the bell and diaphragm, tubing, and up to the earpieces.
4. Inspect tools, equipment, and paraphernalia if there is any significant risk.
5. Use very detailed explanation on the assessment of the tools, equipment, and paraphernalia.
PLEASE HELP NEED KONAPO
Answers
Assessment
hoice. Choose the letter of the best answer. Write the chosen letter on a
heet of paper.
makes planet Earth different from the other planets in the sola
m?
It supports life.
C. The atmosphere holds gases.
.
It is mostly covered in water. D. All of the above
Answers
Answer:
D. all of the above
Explanation:
brainliest?
meaning of condom ...........
Answers
Answer:
something created by humans to stop humans from being made
Which of the following statements is/are true with regard to a polymer of 6 glucose molecules?
I. The chemical formula is C36H72O36
II. The chemical formula is C36H62O31
III. The monomers of glucose were joined via hydrolysis
IV. The monomers of glucose were joined via dehydration synthesis
Answers
Answer:
Statement 'IV' is correct
Explanation:
Glucose molecules are joined together through condenstation/ dehydration (loss of water) reactions.
The statement that is true with regard to a polymer of 6 glucose molecules is as follows:
The monomers of glucose were joined via dehydration synthesis.Thus, the correct option for this question is D.
What is Glucose?Glucose may be defined as a type of simple sugar known as monosaccharides. It bears a chemical formula [tex]C_6H_1_2O_6[/tex]. It is considered the main type of sugar in the blood and is the major source of energy for the body's cells.
Dehydration synthesis involves the reaction between two or more molecules of glucose with the continuous liberation or loss of water molecules. The chemical formula of glucose remains the same when there are six or more polymers that take place, the chemical formula never changes.
Therefore, the correct option for this question is D.
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What role does photosynthesis play in the flow of energy through ecosystems?
1.) It converts sunlight into chemical energy
2.)It uses ATP
3.)It converts chemical energy into carbon dioxide
4.)all of these
Answers
Answer:
It converts chemical energy into carbon dioxide
Explanation:
Answer:
1. It converts chemical energy into carbon dioxide
Explanation:
Plants need oxygen and it turns it into chemical energy then the chemical energy turns it into carbon and the cycle repeats!
Hope I helped if I did please give me brainiest!
what is extrinsic control of heartbeat? In simple terms and examples please!
Answers
Featured snippet from the web
Extrinsic controls of the cardiovascular system include neuronal, humoral, reflex, and chemical regulatory mechanisms. These extrinsic controls regulate heart rate, myocardial contractility, and vascular smooth muscle to maintain cardiac output, blood flow distribution, and arterial blood pressure.
for a scientist, assessing the validity of information requires...
A . specific knowledge
B. a hypothesis
C. experimentation
D. questions
Answers
Hypothesis would need to be tested using an experiment and the hypothesis is the general question.
Experimentation helps a scientist figure out whether or not their ideas, theories, and hypothesis are supported
Which is the final event that occurs when a star is forming?
The outer layer of the star expands.
Gravity pulls gas and dust together.
A black hole forms as the core collapses.
Nuclear fusion begins under high pressure.
Answers
Answer:
D. Nuclear fusion begins under high pressure.
Explanation:
A star is a giant astronomical or celestial object that is comprised of a luminous sphere of plasma, binded together by its own gravitational force.
Some of the examples of stars are;
Canopus.Sun (closest to the Earth)Betelgeuse.Antares.Vega.Stars are typically made up of two (2) main hot gas, Hydrogen (H) and Helium (He). The chronological order in which the formation of a star occur are;
1. Gravity pulls gas and dust together to form dense cores.
2. A protostar forms as mass increases.
3. Nuclear fusion begins under high pressure.
Hence, the final event that occurs when a star is forming is that nuclear fusion begins under high pressure.
Answer:
Nuclear fusion begins under high pressure
Explanation:
I took it on edge
WORTH 15 PTS!! WILL GIVE BRAINLIEST!! HELP!! DUE TODAY!!!
In the simulation I was given,
At first, I was a predator that was eating white and black peppered moths, on white bark.
Then, I was a predator eating white and black peppered moths, BUT on dark bark.
ANSWER TWO QUESTIONS,
Test variable (independent variable):
Outcome variable (dependent variable):
Answers
The independent variable is the cause. Its value is independent of other variables in your study.
The dependent variable is the effect. Its value depends on changes in the independent variable. A test variable is a user-defined, name-value pair that stores and refers to information throughout a test and between tests. You can think of independent and dependent variables in terms of cause and effect: an independent variable is the variable you think is the cause, while a dependent variable is the effect. In an experiment, you manipulate the independent variable and measure the outcome in the dependent variable. used synonymously. used synonymously. However, they are not exactly the same: the outcome variable is defined as the presumed effect in a non-experimental study, where the dependent variable is the presumed effect in an experimental study. The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable. An example of a dependent variable is depression symptoms, which depends on the independent variable (type of therapy).
An independent variable, sometimes called an experimental or predictor variable, is a variable that is being manipulated in an experiment in order to observe the effect on a dependent variable, sometimes called an outcome variable.
Which step in the process of photosynthesis is dependent on light energy?
A.splitting of water into hydrogen and oxygen
B.combining carbon and oxygen into carbon dioxide
C.splitting carbon dioxide into carbon and oxygen
D.combining hydrogen and oxygen to form water
Answers
Answer:
D. Combining hydrogen and oxygen to form water.
Explanation:
The process of photosynthesis which is dependent on light energy is the
combining of hydrogen and oxygen to form water.
Photosynthesis involves the reaction between carbondioxide and water to
form Starch and oxygen. The water molecules however have to be split
because of movement of electrons in which the water become oxidized and
carbondioxide reduced.
This process however have to be done in the presence of sunlight which
serves as a precursor.
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Whenever I see the word artichokes I feel nauseous and scratchy. I once ordered a pizza with artichokes and cheese on it. I have never been allergic to artichokes before. Soon after I began to feel itchy and suddenly saw bumps appearing on my midsection and arms. I called the doctor and talked to his nurse. She asked me if they were square or circular. I said they were square. She said I had hives and to take benedryl. - the sight of artichokes - feeling nauseous and scratchy from the allergic reaction - allergic reaction (hives) - feeling nauseous and scratchy from seeing an the word "artichokes" A. What is the CS? B. What is the UCS? C. What is the CR? D. What is the UCR?
Answers
I'm not sure what's the answer, but since I love helping I'mma try to help you out aha. But uh I think it's B. If I'm wrong I'm sorry :))
The artichoke is a huge, thistle-like perennial plant of the aster family (Asteraceae), often known as the globe artichoke or the French artichoke, and its flower buds are farmed for their gastronomic qualities.
The young bloom bud of a thistle is an artichoke. It is considered a vegetable in cuisine and is consumed as such. The plant, an aster, is plucked for its buds rather than its flowers. It takes some effort to get to the edible sections of an artichoke, which makes it a difficult vegetable to prepare.
What are some examples of UCS, UCR, and CS?
The chemotherapy medications are the unconditioned stimulus (UCS) in this scenario, the vomiting is the unconditioned response (UCR), and the doctor's office is the conditioned stimulus (CS) after being matched with the UCS and UCR.
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A student conducts an experiment to determine how the amount of water given to a plant affects its growth.
What is the independent variable for this experiment?
a the amount of water
b. the height of the plant
c. the amount of sunlight
d. the amount of soil
Please select the best answer from the choices provided
Answers
A fruit fly has black eyes. Having red eyes is a dominant trait (R) and having black eyes is a recessive trait (r).
Which describes the fruit fly’s genotype and phenotype?
genotype: black eyes
phenotype: Rr
genotype: black eyes
phenotype: rr
genotype: rr
phenotype: black eyes
genotype: Rr
phenotype: black eyes
Please try to hurry if possible. Thank you!
Answers
Answer:
Black eyes
Explanation:
Answer:
genotype: rr
phenotype: black eyes
Explanation:
100% sure itz c I took the test !!!!!
Label the following with 1,2,3 for the Newton’s law represent by each description.
1=Newton’s first law
2= Newton’s second law
4= Newton’s third law
Answers
I WILL MARK BRAINLEST
Answers
An electron microscope can be used to magnify things over 500,000 times, enough to see lots of details inside cells. There are several types of electron microscope. A transmission electron microscope can be used to see nanoparticles and atoms
What type of receptors are used to sense pressure and touch on the skin
Answers
Answer: Mechanoreceptors
Explanation: These receptors perceive sensations such as pressure, vibrations, and texture.
what do bactieria have in common with the cells of other living organism
Answers
Answer:
Bacteria have cytoplasm and ribosomes which are common with the cells of other living organisms. Some bacterias have whip-like which is flagellum which helps bacteria cells have prokaryotes which mean the DNA is not being held with the nucleus like cells of plants and animals.
Explanation:
Hope this helps u
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Which of the following microscopes provide 3D images of samples?
a.
dissecting microscope and compound light microscope
b.
dissecting microscope and scanning electron microscope
c.
scanning electron microscope and compound light microscope
d.
compound light microscope and transmission electron microscope
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
The answer would be B: dissecting microscope and scanning electron microscope.
Explanation:
Which molecule would be the most affected by limited nitrogen?
Answers
Answer:
The myofibrillar proteins
Explanation: