Cell membrane and movement across the Membrane.

Check your understanding. Which items did you

s2008m [1.1K]

RNA nucleotides form complimentary base pairs with DNA bases. Hydrogen and sugar-phosphate bonds form and the mRNA is synthesized.

Explanation:

The process of mRNA formed by DNA is called transcription. The genes coding for the protein is present on DNA as a nitrogenous base or nucleotides.

Transcription takes place inside the nucleus with the assistance of major enzyme RNA polymerase. In transcription 5'to3' single strand of RNA is synthesized which is complementary to the 3'to5' strand of DNA. The sequence of DNA has promoter sites which will be recognized and DNA will unzip to form transcription bubble. Several transcription factors and enzyme will be required to synthesize mRNA.

This mRNA after some modification would become primary transcript and pass on to the cytoplasm where protein synthesis will take place.

8 0

3 years ago

True or false? alcohol has been found to increase one's risk for various types of unintentional injuries including drowning, fal

Viefleur [7K]

The answer is a. True

4 0

3 years ago

How does genetic variation affect the type of traits or the adaptations in the individuals of a species?

Gnesinka [82]

Genetic variation describes the genetic differences among individuals of the same species that are naturally occurring. Each genotype within a population usually has different degrees of fitness to an environment. Mating between same species with favored genes guarantees survival of the population in their chosen environment. As the environment changes, the mating behavior between species may again change resulting to a different gene pool to guarantee survival.

7 0

3 years ago

What will most likely happen to the squirrel?

andreev551 [17]

Could you give me more background about said squirrel.

7 0

3 years ago

Read 2 more answers

The glomerulus is a unique, high-pressure capillary bed because the ___________ arteriole feeding it is larger in diameter than

damaskus [11]

Answer:

The preferable words for the fill in the blanks will be -

afferent, efferent;

blood plasma;

diffusion (passive transport), active transport;

microvilli;

secretion;

urine output, cellular metabolism, diet;

1-1.8;

Urochrome;

urea, uric acid, creatinine;

vaporization, lungs, perspiration, skin, decreases;

dialysis.

Explanation:

The glomerulus is a unique high-pressure capillary bed because the afferent arteriole feeding it is larger in diameter than the efferent arteriole draining the bed.

Glomerular filtrate is very similar to blood plasma, but it has fewer proteins.

Mechanisms of tubular reabsorption include diffusion (passive transport) and active transport.

As an aid for the reabsorption process, the cells of the PCT have dense microvilli on their luminal surface, which increases surface area dramatically.

Other than reabsorption and important tubule function is secretion, which is important for ridding the body of substances not already in the filtrate.

Blood composition depends on urine output, cellular metabolism, and diet.

In a day's time, 180 liters of blood plasma is filtered into the kidney tubules, but only about 1-1.8 liters of urine is actually produced.

Urochrome is responsible for the normal yellow coloration of urine.

The three major nitrogenous wastes found in the blood, which must be disposed of, are urea, uric acid, and creatinine.

When water loss via vaporization from the lungs, or perspiration from the skin is excessive, urine output decreases.

If the kidneys become nonfunctional, dialysis is used to cleanse the blood of impurities.

8 0

3 years ago