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STALIN [3.7K]
2 years ago
11

During a conversation with a friend, you tell him that you recently learned in your biology class that acetylcholine release by

a motor neuron triggers an action potential in a muscle fiber, causing it to contract. Your friend tells you that he heard that Botox injections into facial muscles underlying the skin inhibit contraction of the muscles that cause a particular type of facial wrinkle. He asks how Botox does this. What will you tell him
Biology
1 answer:
Marina CMI [18]2 years ago
3 0

Answer:

Explanation:

Botulinum toxin (Botox) is a neurotoxic protein produced by the bacterium Clostridium botulinum and related species

Botulinum toxin commonly acts by binding to high-affinity recognition sites on the cholinergic nerve terminals and decreasing the release of acetylcholine, causing a neuromuscular blocking effect. Through this mechanism, muscle movement is inhibited in the area it is injected to.

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Why is soil considered a non-<br> renewable resource?<br> Plz help ASAP
egoroff_w [7]

Answer:

because you don't get soil like you get the Sun rays everyday. It takes millions of years for formation of soil and you can't get it within the lifespan of one human. Hence it is considered as Non-Renewable resource.

Explanation:

7 0
2 years ago
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A substance that speeds up the rate of a chemical reaction is called
maw [93]

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It is called An enzyme

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3 years ago
Receptors that provide animals with information from the external environment are located in the _____.
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Receptors which provide animals with information from the external environment are located in ears, tongue, eyes, and the nose. These are all receptors that can be found in our sensory organs and provide us with feedback from our nearby environment and the stimuli on which we should be alerted towards. 
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3 years ago
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List all organelles that are found suspended or cushioned in the cytoplasm of an animal cell. There are 15 total
DIA [1.3K]

Answer:

The organelles in an animal cell are as follows:

cell membrane, nucleus, nucleolus, nuclear membrane, cytosol, smooth endoplasmic reticulum, rough endoplasmic reticulum, Golgi apparatus, ribosomes, mitochondria, centrosome, cytoskeleton, vacuoles, vesicles, and lysosomes.

Explanation:

An animal cell is a typical example of an eukaryotic cell i.e a cell that contains a membrane-bound nucleus. In the cell are certain structures that performs specific functions in the cell called ORGANELLES. The organelles, according to this question, are found suspended or cushioned in the cytoplasm of the animal cell.

A list of the organelles in the cytoplasm (part of the cell that excludes the nucleus) of an animal cell are as follows:

- cell membrane

- nucleus

- nucleolus

- nuclear membrane

- cytosol

- smooth endoplasmic reticulum

- rough endoplasmic reticulum

- Golgi apparatus

- ribosomes

- mitochondria

- centrosome

- cytoskeleton

- vacuoles

- vesicles

- lysosomes

3 0
3 years ago
1. Before storage, excess ___________ must be removed from food grains.
german

Answer:

Chemicals

Cut and ready

Soil erosion

Oxygen

Explanation:

6 0
2 years ago
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