Answer:
due to the structural-binding properties of the nitrogen bases
Explanation:
Adenine and guanine are purines (two-carbon nitrogen ring bases) that pair with thymine and cytosine pyrimidine nitrogen bases (one-carbon nitrogen ring bases), respectively. These specific base-pair rules are due to their hydrogen bonds (i.e., van der Waals forces), which stabilize the structure of the DNA helix. Cytosine and guanine have three sites to form hydrogen bonds to each other, while adenine and thymine have only two sites. The specific interactions between purines and pyrimidines are critical for proper bonding and attachment to the sugar-phosphate DNA backbone (i.e., for the formation of the DNA double-helical arrangement).
1. What has to be added to a substance to cause a phase change?
Answer:
To cause a phase change, you either add heat energy to a substance to cause it to evaporate, melt, or sublimate, or you subtract heat energy, or take it away, to make the substance freeze or condense. Hope it helps!
Explanation:
This organelle shrinks in response to 5% salt solution and grows in hypotonic solution:
Answer:
Plasmolysis in Elodea plant cells
If P is the dominant gene for straight hair trait and p is the recessive gene for curly hair, match the following
Answer:
the question is not complete
If a DNA sequence has 14 nucleotides what is the maximum number of amino acids that can be coded
What do you think causes the cells to stop the repair process?
Answer:
reduced or poor blood supply
Explanation:
Since errors in the repair of DNA breaks can generate instability in the genome, repair of these breaks is a highly regulated process.
It is, therefore, essential the existence of control mechanisms that detect errors in this process and stop the cell cycle to allow the cell to repair the breaks, and if this is not possible, to eliminate the damaged cell.
HELPPPPPPPPPPP PLZZZZZZ BRAINLEST
Answer:
What do you need help on?
Explanation:
explain why nucleic acids cannot be formed from sugars alone
Answer:
with alcohols to form ester groups; with amines to form amide groups. Sugars. The sugars in DNA and RNA are penthouses.
I NEED SOMEONES HELP ON THIS QUESTION THE PICTURE IS ABOVE
Answer:
chemical that's the answer!
Answer:
c) Chemical
Explanation:
The poison dart frog triggers the production of a chemically dangerous alkaline Batrachotoxin, when it feels a threat to itself or its habitat.
The skunk similarly sprays chemical containing aerosols, that have an offensive odour to defend itself.
ncreased use of electricity has had a negative impact on the environment by
increasing
A. farmland
B. electric cars
c. air pollution
D. available food
Your friend tells you that there is no starch in the homemade cookies she gives you. You like her, but you are not too sure that she really knows what ingredients might or might not contain starch. When you get the cookies home, what test could you do to quickly test to see if there was starch in the cookies?
Answer:
add iodine solution and look for a color change. If starch is present the color change should be blue/black
 If a translation of (x, y) → (x + 6, y – 10) is applied to figure ABCD, what are the coordinates of D'? (–5, –2) (1, –12) (4, –15) (–9, –6)
Answer:1,-12
Explanation:
Answer:b
Explanation:
HELPPPPPPP PLEASE QUESTION IS ABOVE
Answer:
B
Explanation:
B leaves tiny stinging barbs, which since it's on leaves, prey wouldn't expect it because it would blend in with the environment. C has thorns that would pierce the skin, I'm guessing that it would be visible to prey.
Correct me if I'm wrong :')
Zookeepers carry a stretcher that holds a sleeping lion. The total mass of the stretcher and lion is 175 kg. The lion's forward acceleration is 2 m/s2. What is the force necessary to produce this acceleration?
Answer:
350N
Explanation:
formula = Mass x Acceleration
= 175 x 2
= 350N
why I have N ( Newton) is because the unit of force is Newton.
Which describes bedrock?
o consists of solid rock
o lies directly above the soil layer
o does not contain weathered rock
o forms from decomposed material
Answer:
consists of solid rock
Explanation:
bedrock contains only solid rock unless you are talking about a different type of bedrock this bed is called saprolite. saprolite contains severly weathered rock and lies above the solid layer of bedrock
Answer:
a
Explanation:
First step of cellular respiration in which a molecule of glucose is broken into two molecules o
pyruvic acidTakes place in the cytoplasm. Yields 2 ATP.
Answer:
Glycolysis
Explanation:
Glycolysis is the first step in cellular respiration, both aerobic and anaerobic.
Glycolysis occurs in the cytoplasm, whereas other steps of aerobic respiration occur in the mitochondria.
During glycolysis, a six carbon glucose molecule is broken down into two three carbon molecules of pyruvic acid. This process yields two molecules of ATP. Two hydrogen ions and two molecules of water are also released during the process.
2
If an organism has 15 chromosomes in a single sperm cell, how many
chromosomes would reside in its somatic cells?
O 15
O 30
0 7.5
45
Answer:
i just think but not sure
the answer is 30.....
I think but not sure
clarify and tell whether I am correct or not
3. Which of the samples shown below are eukaryotic?
• A. B and D
• B. B and C
• C. A, C, and D
• D. A, B, and D
Answer:
b and c
Explanation:
living cells maintain a balance between materials entering and exiting the cell. their ability to maintain this balances called blank
Which of the following is the proper order of the Linnaean system of classification starting at the most specific and moving up?
species, genus, family, order, class, kingdom, phylum
genus, species, order, family, class, phylum, kingdom
species, genus, family, order, class, phylum, kingdom
Species, genus, order, class, family, phylum, kingdom
In a direct variation, y=39 when x=3. Find the value of y when x=2.
1.) 58.5
2.) 26
3.) 02
4.) 3
whats the definition of photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize get nutrients from carbon dioxide and water.
Explanation:
hopes this helped :)
Photosynthesis is defined as the processes that bring about the manufacturing of food by green plants.
Food is complex energy-rich organic matter which living organisms feed on to obtain nutrients, substances necessary for life. Green plants which are known as autotrophs has the ability to produce their own food through the process of photosynthesis.
The main features of photosynthesis include:
It takes place in the chloroplasts of plants, in the presence of sunlight.The energy needed for the process is gotten from sunlight which is absorbed by chlorophyll found in the chloroplasts.The raw materials used are low-energy containing inorganic compounds, example: carbon dioxide and water.The final products are high-energy containing sugars. oxygen is given off as a waste product.Learn more here:
https://brainly.com/question/18599167
Which statement does NOT describe external regulatory proteins?
1 They respond to events occurring inside a cell.
2. Growth factors are one group of external regulatory proteins.
3. They can speed up or slow down the cell cycle.
4. Some can cause cells to slow down or stop their cell cycles.
Answer: 1) They respond to events occurring inside a cell.
Explanation:
The rest DO describe external regulatory proteins except the first option.
Hope this helps :)
* please mark my answer Brainliest *
1. They respond to events occurring inside a cell.
External Regulators Proteins:
External Regulators Proteins that respond to events outside the cell are called external regulators. External regulators direct cells to speed up or slow down the cell cycle.Growth factors are among the most important external regulators.They stimulate the growth and division of cells.The three types of external regulators proteins are Cyclins, cyclin-dependent kinases (Cdks), and the APC/C.Therefore, the statement that NOT describe external regulatory proteins is Statement 1.
Learn more:
brainly.com/question/23804350
The elevation of a mountain is its ...
Answer:
Height above a given level
which of these is not recycled through earths ecosystem
energy
carbon
nitrogen
water
Answer:
energy
Explanation:
what is the meaning of ecotype and biotype.
What is the process of transformation?
Answer:
Copying foreign DNA into RNA
Explanation:
Is the process of information strand of DNA is copied into a new molecule messenger RNA.Answer:
adding foreign DNA to a bacterial cell. gradpoint.
Which statement is true?
• Carbohydrates have a higher amount of energy than proteins.
• Fats have a lower amounts of energy than carbohydrates.
• Proteins and Carbohydrates have the same amount of energy.
• Fats and proteins have the same amount of energy.
Answer: • Fats have a lower amounts of energy than carbohydrates.
Explanation:
Answer:
C) Proteins and Carbohydrates have the same amount of energy.
it is an electrical conponents that limits or regulate the flow of electrical current is an electronic circuit
this
The fish in the blue food
chain is a tertiary consumer.
What is another term for
"tertiary consumer"?
A. detritivores
B. autotrophs
C. third level consumer
D. fourth level consumer
C) third level consumer
Where is testosterone produced?
1-the thyroid gland
2-the testes
3- the ovaries
