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3 years ago

Cystic fibrosis affects about 200,000 people in the united states. a. True b. False

Biology

1 answer:

Lorico [155]3 years ago

5 0

Cystic fibrosis affects more than 200,000 people in the United States so false.

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Which of the following hormones are synthesized in the cell bodies of neurosecretory cells found in the hypothalamus? Antidiuret

bixtya [17]

Answer:

Antidiuretic hormone

Explanation:

Antidiuretic hormone that is synthesized and produced in the brain by the hypothalamus, is secreted from the pituitary gland, where it is stored. This hormone is released into the blood stream in response to changes in the water balance in the blood. This hormone helps the kidneys to control and regulate the amount of water in the blood

5 0

4 years ago

In Drosophila, the genes for body coloration and eye size are on different chromosomes. Normal-colored bodies are dominant to eb

Yuri [45]

Answer:

225 flies

Explanation:

Let gene for body colour : A

Let gene for eye type : B

Parent 1 : normal body and normal eyes = AABB

Parent 2: ebony body and eyeless = aabb

F1 : AABB X aabb = AaBb ( all have normal body and normal eye )

F1 progeny is self crossed given that the two genes are on different chromosomes which means they show independent assortment:

AaBb X AaBb =

A_B_ = normal body, normal eyes = 9

aaB_ = ebony body, normal eyes = 3

A_bb = normal body, eyeless = 3

aabb = ebony body, eyeless = 1

Hence the ratio is 9 : 3 : 3 : 1

Out of the 400 flies:

(9/16) * 400 = 225 flies have normal body colour and normal eyes

7 0

3 years ago

Which statement regarding the energetics of the citric acid cycle is true?(A) All of the energy‑producing capacity of the cycle

Step2247 [10]

Answer:

The correct answer is C production of FAD to FADH2 by the citric acid cycle represent the energetic capacity to synthesize about 1.5 ATP.

Explanation:

Citric acid cycle is one of most important stage of cellular respiration.Citric acid cycle or TCA cycle composed of various enzyme catalyzed biochemical reaction.

various reduced coenzymes are produced during TCA cycle such as NADH,FADH2.FADH2 is formed from FAD during the conversion of succinate to fumarate.

The FADH2 then enter electron transport chain to oxidize itself into FAD along with the generation of 1.5 ATP.

7 0

3 years ago

One of the many traits between crocodiles and birds is that they provide extensive care of their young

stellarik [79]

Answer:

um.. i think it's true?

Explanation:

4 0

3 years ago

Which of the following characteristics is not attributed to the sympathetic division of the ANS?

guajiro [1.7K]

Answer:

C) It has a long preganglionic fibers

Explanation:

Peripheral nervous system (PNS) is the nervous system that contains nerves and ganglia outside the central nervous system (CNS). PNS is divided into:

somatic (voluntary) nervous system-controls the movements of the skeletal muscles
autonomic (involuntary) nervous system-controls the smooth muscles and glands and thus it is the regulator of the major body functions. It is subdivided into tree groups:

sympathetic ("fight and flight") system-responsible for stressful and active situations (but also in normal conditions);contains short preganglionic fibers and long postganglionic fibers.

parasympathetic ("rest and digest") system-opposite to sympathetic, responsible for the maintenance of body's activities at rest.

enteric nervous system-controls the function of the gastrointestinal tract.

6 0

3 years ago