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2 years ago

4. Which of the following statements best describes how the traits of an organism are determined

Biology

1 answer:

butalik [34]2 years ago

6 0

Answer Choices:

DNA provides the energy needed for an organism to grow and function

DNA is copied into mRNA, which controls cellular functions

DNA codes for proteins, which allow an organism to grow and function

DNA unzips and each strand codes for a different amino acid

Answer:

DNA codes for proteins, which allow an organism to grow and function

Explanation:

DNA provides the energy needed for an organism to grow and function - this is false. DNA does not provide energy. A molecule called ATP, mostly produced by cellular respiration, provides energy for the cells to grow and function.

DNA is copied into mRNA, which controls cellular functions - this is false. While it is true that DNA is copied into mRNA, mRNA does not directly control cellular functions. Instead, mRNA is translated into proteins.

DNA codes for proteins, which allow an organism to grow and function - <u>this is true, as indicated above, DNA is transcribed to mRNA which is translated into proteins. Proteins carry out essentially all the functions in the cell</u>

DNA unzips and each strand codes for a different amino acid - this is false, DNA is transcribed into mRNA. Each mRNA codon (three bases) codes for a different amino acid

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Which is a characteristic of exponential population growth?

Rudik [331]

A characteristic of exponential population growth is that <u>resources are consumed exponentially during all phases </u>

Explanation:

Exponential growth is a type of growth where the population doubles its population size with each generation. Bacteria are the best examples of organisms that can exhibit this type of growth. However, just as the growth of the population is exponential, so is the consumption of resources. With each generation as the population doubles, the strain on the resources increases. This continues until the resources become depleted and cannot sustain the population numbers. Because resources are always infinite, this is why it is rare to find any population, including bacteria, sustaining exponential growth for long periods. Most common population growth is logistic (S-shaped).

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3 years ago

Which of the following is TRUE for lipids?

sdas [7]

Answer: D). A and B

Explanation:

Lipids are the biomolecules that are typically non-polar and hydrophobic in nature, which means they are insoluble in water. The function of lipids is to store energy, and they are the integral part of the cell membrane of plant and animal cell. The examples of lipids includes the waxes, steriods, fat soluble vitamins, phospholipids, diglycerides and fatty acids.

5 0

3 years ago

Where does mechanical breakdown of food occurs?

Verizon [17]

There are lots of location that mechanical digestion occurs. But 2 common locations of mechanical breakdown of food (or physical digestion) occur in the mouth and in the duodenum.

Mechanical breakdown of food does not require enzymes, which is different from chemical digestion. Usually, the main function of mechanical digestion is to help speed up the chemical digestion later, usually by increasing the surface area of the food.

In the mouth, we chew the food. This can help increase the amount of surface area of the food we ate so that later on, the chemical digestion that requires enzymes such as amylase or protease will speed up. More enzymes can contact the food.

In duodenum, bile that are produced from the liver helps emulsify fats and lipids into small oil droplets. Again, this action can also help increase the surface area of the lipids so that the digestion of lipids with enzyme lipase would be more efficient. Note that bile is important because only enzyme lipase can digest lipids in the duodenum, so if bile is not produced, fats are hardly digested.

Other types of mechanical digestion may include the churning in stomach, or the squeezing of food in the oesophagus (peristalsis).

6 0

2 years ago

what do you call the project procedure that helps you determine the volume of an irregular shaped object while using a graduated

Burka [1]

Water displacement, after all, the water that's displaced is used to calculate the volume of the irregular shaped object. Hope my answer helped!

8 0

3 years ago

(Does heating water allow it to dissolve more sugar)? What is the Dependent Variable, What is the Independent Variable?

tino4ka555 [31]

Answer:

yes

independent - temperature

dependent - amount of sugar dissolved

Explanation:

When water molecules are heated they move faster and collide more with the sugar molecules. These collisions transfer energy to the sugar molecules. Energy is needed to break bonds. The bonds holding the sugar molecules together or more likely to be broken.

The amount of sugar dissolved is dependent on the temperature of water.

7 0

3 years ago