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3 years ago

Drug cravings become heightened at when?

Biology

1 answer:

Nana76 [90]3 years ago

4 0

Drug carvings become heightened: whenever the user is exposed to any situation that triggers a memory of drug use.

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Which of the following is NOT a function of Sertoli cells?

zalisa [80]

Answer:

The correct answer is option - d. Production of primary spermatocytes.

Explanation:

The accessory cells or supporting cells present within the seminiferous tubules of reproductive system termed as the Sertoli cells. They play various roles in the body and reproductive system.

Sertoli cells make blood-testis barrier in adjacent Sertoli cells in the seminiferous tubules. These cells secrete different types of enzymes and hormones such as inhibin which are also secreted by ovary and placenta in females. Sertoli cells produce seminiferous tubular fluid to provide nutrition to the sperm. Apoptotic germ cells are timely eliminated by these cells.

Thus, the correct answer is option D. Production of primary spermatocytes.

3 0

3 years ago

Sewage is the most common form of pollution in rivers and streams. Please select the best answer from the choices provided T F

timurjin [86]

Answer:

Its true

Explanation:

TRUTH SPEAKS

8 0

3 years ago

Which are characteristics of scientific questions? Check all that apply.

lisov135 [29]

Answer:

asking about subjective matters, addressing a gap in knowledge, and already having fully confirmed explanations

Explanation:

4 0

3 years ago

Which organs perform both mechanical digestion and chemical digestion of food?

kotykmax [81]

Answer: Mouth.

Explanation:

The mouth is known to be performing both the tasks of chemical digestion and mechanical digestion.

The food is ingested through mouth and the teeth perform the process of mechanical digestion by breaking down the food particles into smaller particles.

Then the saliva gets mixed into the food and the enzymes(amylase) present in the saliva helps in the digestion of carbohydrates.

So, mouth is the organ that performs the process of both mechanical and chemical digestion.

6 0

3 years ago

Read 2 more answers

PLEASE HELP! WILL GIVE BRAINLIEST AND POINTS!

natulia [17]

Answer:

A. Lancelet

B. All chordates

Explanation:

A. Dorsal nerve chord is the only unique feature among all members of phylum chordata (mainly found in subphylum Vertebrata). In the given list, only lacelet is the Chordate whereas snail belongs to phylum Mollusca, grasshopper belongs to Arthropda, and jellyfish belongs to Cnidaria. Dorsal nerve cord runs along the length of organism's body.

B. Gill slits are opening structures to gills through which water passes from pharynx/throat to exterior. Their main purpose is to help filter the food particles available in surrounding water. Although they are typical for amphibians and fishes, chordates also possess gill slits at embryonic stages.

7 0

3 years ago