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3 years ago

The venom of a black widow spider causes neurons to release a flood of the neurotransmitter acetylcholine. this can cause:

Biology

1 answer:

djverab [1.8K]3 years ago

8 0

Answer;

-Convulsions and possible death

Explanation;

-Acetylcholine is the neurotransmitter used at the neuromuscular junction, it is the chemical that motor neurons of the nervous system release in order to activate muscles.

-It's found in parts of the peripheral nervous system, spinal cord, and areas of the brain. In the peripheral nervous system, ACh activates muscles that help the body move. When Ach is released to the muscle cells, the muscle contracts.

-There are many problems that can occur if ACh is blocked (muscles can't contract). One example is the black widow spider which uses venom that causes a flood of ACh into muscle cells and results in violent, uncontrollable muscle contractions, paralysis, and death for it's prey.

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Look at the number of organisms and the amount of energy in each level of the pyramid. Why do you think there are more organisms

aleksandrvk [35]

Answer:

If there wasn't a lot of organisms and energy in the productive part of the triangle, then there wouldn't be a lot of third level organisms. The energy piramid would be a lot smaller then what it is here, and maybe if the energy source was low then there might not be such a vast varity of animals in the ecosystem.

You're welcome friend <3

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3 years ago

The target cells for the hormone acth are located in the _______.

Sergio [31]

Hey there Ashley Gonzales1137,

Answer:

Adrenal Cortex

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3 years ago

Which kingdom does a multicellular living organism most likely belong to?

RideAnS [48]

Answer:

Eukarya - (D)

Explanation:

Organisms belonging to the plant kingdom are eukaryotic and multicellular organisms. They have a distinct cell wall made of cellulose. Cells are organised into true plant tissues. Plants contain plastids and photosynthetic pigments such as chlorophyll.

7 0

3 years ago

When recombinant DNA is inserted into the genome of a host organism, what's created?

Lostsunrise [7]

A. A transgenic organism
Transgenic means "crossed genes" whichnis what happened

6 0

3 years ago

What are the differences in their hard parts, distribution, reproduction among phytoplankton of cyanobacteria, diatom, coccolith

Margarita [4]

Answer:

Explanation:

DIFFERENCES BETWEEN HARD BODY PARTS.

•Cyanobacteria have calcified sheaths.

• Diatoms have hard but porous cell wall.

• Coccolithophores have hard body parts.

• Silicoflagellates skeleton is composed of opaline silica.

• Dinoflagellates do not have hard body parts

• Green algae - no hard body parts.

• Brown algae - no hard body parts.

DIFFERENCES BETWEEN DISTRIBUTION

• Cyanobacteria are found almost in every terrestrial habitat on planet.

• Diatoms are found in oceans, freshwater, soil and damp.

• Coccolithophores are exclusively marine.

• Silicoflagellates are found in marine environment.

• Dinoflagellates are both freshwater and marine.

• Green algae grow on objects that do not move such as substrate, rock.

• Brown algae - wide distribution from tropical to polar zones.

DIFFERENCES BETWEEN REPRODUCTION.

• Cyanobacteria - asexually by binary or multiple fission, fragmentation, spore formation.

• Diatom - asexually by cell division through mitosis.

• Coccolithophores - asexually by binary fission.

• Silicoflagellates - asexually

• Dinoflagellates - asexually

• Green algae - sexually or asexually by cell division, fragmentation, spore formation.

• Brown algae - sexually and asexually.

5 0

3 years ago