Answer:
The hydrophilic part of the polypeptide chain would be oriented towards the surrounding water while the hydrophobic portion would be arranged away from the water and would make the hydrophobic interior resulting in coiling of the polypeptide chain. The body proteins assume the shapes to organize their hydrophobic parts away from the watery fluid.
Explanation:
Amino acids are the monomers of proteins. Each amino acid, present in proteins, has a central carbon atom. Four functional groups are attached to the central carbon atom of amino acid. These are the carboxyl group (COOH), amino group, a hydrogen atom (H) and a side chain (called R group). Amino acids differ from each other for the side chain present in them. Based on the nature of the side chain, amino acids are hydrophobic or hydrophilic or neutral. Sidechains of some amino acids are charged and have positive or negative charges on them.
The extracellular fluid of the body is a watery medium. Blood also has liquid plasma that is 99% water. The intracellular fluid, called cytosol, is also a water-based liquid.
The hydrophilic side chains of the amino acids interact with the watery surroundings. They can make hydrogen bonds with the water. The charged hydrophilic R groups make electrostatic interactions with the surrounding medium. The hydrophobic R groups of the amino acids tend to arrange themselves away from the watery medium. This makes the part of the polypeptide chains with hydrophobic amino acids to fold so that these R groups are oriented away from the water.
Similarly, when a long polypeptide chain is dropped in the water, the hydrophobic R groups are arranged away from the water while the hydrophilic ones are arranged towards the surface of the chain facing the water. It is done to adopt a stable shape where maximum attraction forces are established.
All of the following statements are true about enzymes, EXCEPT
A)They are biological catalysts.
B)They lower the amount of activation energy needed for a reaction.
C)They bind with the substrate.
D)They can be used only once.
ANSWER FAST AND THIS IS NOT A HIGHSCHOOL THING IT IS MIDDLE SCHOOL <3
Which example is ONE specific form of simple diffusion?
A: If water moves into a cell by osmosis, it is moving into an area of higher solute concentration.
B: If water moves into a cell by diffusion, it is moving from an area of higher concentration to an area of lower concentration.
C: If water moves into a cell by osmosis, it is moving into an area of higher water concentration.
D: If water moves into a cell by diffusion, it is moving into an area of higher solute concentration.
Answer:
c
Explanation:
Peter loves music. He believes that he does his homework better and faster when he listens to music. His parents say that music is distracting when studying.
a. What is the problem?
Answer:
I think the problem is that Peter is not studying; he is doing his homework.
Studying means he is preparing for a test and learning something. Homework is something you already know.
What is the term that scientists use when comparing the properties of solids liquids and gases
Answer:
The State of Matter
Explanation:
Which of the following is true about elements?
A.
Elements combine to form compounds in nonliving substances but not in organisms.
B.
Elements combine to form compounds in organisms but not in nonliving substances.
C.
Elements do not combine to form compounds.
D.
Elements combine to form compounds in organisms and nonliving substances.
Answer:
I believe the answer is D or B.
Explanation:
Answer:
D
Explanation:
study island
Explain whether continuing to increase light intensity will increase the rate of photosynthesis. Please help!
Answer:
So in the case of a plant, a higher light intensity means more packets of light called “photons” are hitting the leaves. As you rise from low light intensity to higher light intensity, the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis.
Explanation:
If you continue to increase the intensity of light that a plant receives, what happens? The rate of photosynthesis increases with light intensity. The rate of photosynthesis decreases with light intensity. The rate of photosynthesis increases and then levels off.As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. This indicates that the rate of photosynthesis increases with light intensity.
Explain why grease on clothing will not come out with water alone.
Answer:
It forms water proof barriers so its insoluble in water
Select all of the arrows in the model that represent the movement of nitrogen from an abiotic system to a biotic system.
Answer:
Nitrogen compounds in the soil ---> Plants
Nitrogen compounds in the soil ---> Denitrification bacteria (convert nitrogen compounds to N2)
Nitrogen in the atmosphere ---> Nitrogen fixing bacteria (convert N2 to nitrogen compounds)
Explanation:
This model in the image section is portraying the nitrogen cycle, which involves the transfer of nitrogen within biosphere, atmosphere, and lithosphere etc. The abiotic components of this model are the non-living parts while the biotic components are the living parts.
In this model, the movement of nitrogen from abiotic or non-living component of an ecosystem to the biotic or living component is as follows:
Nitrogen compounds in the soil ---> Plants
Nitrogen compounds in the soil ---> Denitrification bacteria (convert nitrogen compounds to N2)
Nitrogen in the atmosphere ---> Nitrogen fixing bacteria (convert N2 to nitrogen compounds)
Which four nutrients cycle through all of Earth's spheres and organisms?
Answer:
water, carbon, nitrogen, phosphorus, and sulfur cycles.
Explanation:
Biogeochemical cycles important to living organisms include the water, carbon, nitrogen, phosphorus, and sulfur cycles.
Which one is the correct equation for calculating density? *
Density - Mass / Volume
Density - Mass / Weight
Density - Volume / Mass
Density = Volume / Weight
Answer: Density=Mass/Volume
Explanation:
Answer:
[tex]density = \frac{mass}{volume} [/tex]
explanation :
here some examples
the mass of 20 cm³ of mercury is 272g. calculate it density of mercury.
[tex]density \\ = \frac{mass}{volume} = \frac{272g}{ {20cm}^{3} } [/tex]
answer :-
[tex] = 13.6g \: {cm}^{ - 3} [/tex]
Dr. Naskrecki believes that scientists will eventually identify between 50,000 and 100,000 species in
Gorongosa National Park. Why do you think he suspects there are so many more than the 2,829
species they have already identified living in the park?
Answer:
The reason why Dr Naskrecki thinks he suspects there are so many more than the 2,829 species they have already identified living in the park is because there are many species that has been identified in the world because humans haven’t gotten to most parts of the earth which makes it a lot undiscoverable.
Another one is that the species multiply rapidly and easily.
Lots of hydroxides (OH) will make a solution
A.acidic B. Basic C. Neutral
Answer:
B. Basic
Explanation:
Hydroxide (OH) is an anion with the chemical formula OH-. As the formula implies, it consists of an oxygen atom and a hydrogen atom. The more electronegative oxygen atom shares electrons with the less electronegative hydrogen atom via covalent bonding.
Hydroxide ion dissolves in water to form a very strong base, hence, an aqueous solution that contains lots of hydroxides will be BASIC or ALKALINE. A solution with lots of hydroxide ions is a STRONG BASE.
2. If you cannot see most cells with just your eyes, how can you see a unicellular organism?
Answer:
Microscope
Explanation:
Answer:
microscope
Explanation:
Which is NOT TRUE about upland landscape positions?
A May be subject to erosion
B Normally the oldest and most strongly developed
C Area of accumulation of soil material
D Includes summits and side-slopes
Answer:
A. May be subject to erosion
Explanation:
what is crop fallowing?
Please reply fast I need to do my biology assignment !!!
Answer: A field, or several fields, are taken out of crop rotation for a specific period of time, usually one to five years, depending on crop. Fallowing soil is a method of sustainable land management that has been used by farmers for centuries in regions of the Mediterranean, North Africa, Asia and other places.
Explanation:
Please help me need the answer . how far is the distance, to the nearest decimal,between the two marks? By the way None of these is wrong
.
Define the term enzyme. Describe how enzymes influence metabolic reactions in the cell.
Evan is a substance produced by a living organism which acts as a chemical symbol en
Explanation:
enzyme is produce by a living organism which acts as a catalyst to bring about a specific biochemical chemistry
This stadium can hold 100,000, or 1x10, people. The
number of atoms in a grain of iron is about 1x 1016,
Would you need 1 x 10° or 1 x 10' stadiums to hold
the same number of people as the number of atoms in
a grain of iron? Explain your answer,
Answer:
1 x 10^13 stadiums will be needed in this scenario
Explanation:
We are told that
1 stadium holds = 1 × 10^5 people and
Number of iron atoms = 1 × 10^18 atoms
If the stadium carries an equivalent number of atoms as that of people.
We can infer that 1 stadium will carry 1 × 10^5 atoms.
The calculation to determine the number of stadiums would then be 1 × 10^18 divided by 10^5 atoms/stadium which was gotten by dividing the total number of atoms by the number of atoms per stadium.
Number of stadiums = Total number of atoms ÷ Number of atoms per stadium
= 1 × 10^18 atoms ÷ 1 × 10^5 atoms/stadium
= 1 × 10^13 Stadiums
This means that 1 × 10^18 atoms would occupy 1 × 10^13 stadiums
Matter is moved through the Earth by the interaction of Earth’s systems.
true or false.
Answer:
True.
Explanation:
Answer:
True
Explanation:
Edge 2020
pleasssssse helpppppp!
A type of asexual reproduction in which a prokaryotic cell replicates its DNA and divides in half, producing two identical daughter cells, is called
binary fission
conjugation
mitosis
transduction
Answer: binary fission, form of sexual reproduction in which paramecia and some prokaryotes exchange genetic information. I THINK this is right!
Answer:
The answer is binary fission.
Explanation:
Binary fission, asexual reproduction by a separation of the body into two new bodies. In the process of binary fission, an organism duplicates its genetic material, or deoxyribonucleic acid (DNA), and then divides into two parts (cytokinesis), with each new organism receiving one copy of DNA.
Hope that helps you!!
6.) A dog named Rascal leaves his home and travels a short distance and
then returns home. The graph shows his position as a function of time.
How does his velocity on his return trip compare to his velocity for the
first 5 seconds?
Answer:
If your on USA testprep then the correct answer is D !
Explanation:
Answer:
THE CORRECT ANSWER IS: His velocity on the return trip was twice as fast when compared to the first 5 seconds.
Explanation:
Gim kit
These always contain DNA as the main genetic material
A. Virus
B. Both
C. Cells
Answer:
C
Explanation:
The one that always contain DNA as the main genetic material is cell nucleus. The correct option is C.
What is genetic material?The genetic material is the molecule that contains genes and is passed down from parents to children. It contains instructions for the growth and function of living organisms.
DNA and RNA are the two main types of genetic material. DNA is stored in the nucleus of eukaryotic cells, which have a nucleus and membrane-bound organelles, and is wrapped around round proteins called histones. DNA is ended up finding in the cytoplasm of prokaryotic cells.
A virus is composed of a core of genetic material surrounded by a protein-based protective coat called a capsid.
Viruses have either RNA or DNA as their genetic material, but neither. Single-stranded or double-stranded nucleic acid
Thus, the correct option is C.
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Chad drew a diagram to compare animal cells and bacterial cells.
Which label belongs in the area marked X?
nucleus
DNA
cell wall
ribosomes
Answer:
It’s nucleus
Explanation:
have a good day;)
Answer:
1, nucleus.
Explanation:
What is the MAIN type of energy that is produced during cellular respiration?
Glucose
O ATP- Adenine Triphosphate
O Water
Light
Answer:
ATP- Adenine Triphosphate
Explanation
:In cellular respiration, energy is obtained by oxidizing an organic molecule, usually glucose, releasing energy. Part of that energy is stored as ATP (adenosine triphosphate) molecules, and part is released as heat.
If climate change increases the overall temperature of the earth, glaciers can melt
into the ocean. If that happens, what would be the spheres involved?
A. cryosphere and hydrosphere
B. geosphere and atmosphere
C. cryosphere and biosphere
D. hydrosphere and atmosphere
The climate change increases the overall temperature of the earth, glaciers can melt into the ocean. The spheres involved cryosphere and hydrosphere. Thus option A is correct.
What is cryosphere?Cryosphere is defined as solid precipitation, snow, sea ice, lake and river ice, icebergs, glaciers and ice caps, ice sheets, ice shelves, , and seasonally frozen ground are all components of the Earth's climatic system.
It can also be defined as the area of the earth's surface marked by the presence of water.
Hydrosphere is defined as the total mass of water on, beneath, and above the surface of a planet, minor planet, or natural satellite.
It can also be defined as the component of the Earth made up of all liquid water.
There are basically three types of hydrosphere.
LiquidVaporIceClimate change is defined as the long-term temperature and weather pattern shifts These changes could be natural, such as oscillations in the solar cycle.
Thus, the climate change increases the overall temperature of the earth, glaciers can melt into the ocean. The spheres involved cryosphere and hydrosphere. Thus option A is correct.
To learn more more about cryosphere, refer to the link below:
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two processes of producing energy for an ecosystem include...
a) photosynthesis & chemosynthesis
b) fermentation & photosynthesis
c) chemosynthesis & respiration
d) respiration & fermentation
Answer:
A) photosynthesis and chemosynthesis
Explanation:
Chemosynthesis is the biological conversion of one or more carbon-containing molecules and nutrients into organic matter using the oxidation of inorganic compounds or ferrous ions as a source of energy and photosynthesis obviously.
What macromolecules can be found in animal cells
and
What macromolecules can be found in plant cells
Answer:
ANIMALS: There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. Combined, these molecules make up the majority of a cell's mass.
PLANTS: The three main classes of macromolecules found in plants are thus proteins, polysaccharides and nucleic acids. However, mixed polymers are also known. such as the glycoproteins, which contain both sugars and amino acids in covalent linkage.
The macromolecules found in animal cells are carbohydrates, proteins, lipids, nucleic acids, and water. Each of these macromolecules has specific functions in the body of kingdom Animalia.
What are Macromolecules?Macromolecules may be defined as a molecule that contains a very large number of atoms that are held together by specific bonds.
The macromolecules found in animal cells are polysaccharides, proteins, nucleic acids, water, and some types of mixed polymers.
All such macromolecules perform specific functions in the structure of kingdom Plantae and meet the need for metabolic activities.
Therefore, it is well described above.
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Helpp kinda confused :( and thxxx ")
The lytic and the lysogenic cycles are the two methods that bacteriophages reproduce. They both begin with a bacterium that has been infected with bacteriophage DNA.
Lytic:
The phage DNA reinstructs ribosomes and the bacterium begins producing many bacteriophages.The bacterium eventually lyses and releases the bacteriophages into the environmentLysogenic:
The phage DNA is incorporated into the bacterium's chromosome.The bacterium eventually duplicates this DNA when it undergoes fission, producing two infected daughter cells.Eventually, the phage DNA will be read by the bacterium and it will go into the lytic cycle, described above.To sum it up, the lytic cycle ends the bacterium's life by producing offspring, yet the lysogenic cycle allows for multiple bacteria to divide and eventually undergo the lytic cycle.
What is a hypertonic, hypotonic, and isotonic solution?
Answer:
Explanation:
If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink. In an isotonic environment, the relative concentrations of solute and water are equal on both sides of the membrane. When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.