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DochEvi [55]
3 years ago
5

"botox injections smooth facial wrinkles because _____ is an acetylcholine antagonist that blocks the underlying facial muscles.

"
Biology
2 answers:
Lapatulllka [165]3 years ago
8 0

Answer:

Botulinum

Explanation:

Botox is used cosmetically to remove wrinkles and to treat certain muscular conditions. It is made from Botulinum neurotoxin obtained from the bacteria <em>Clostridium botulinum</em>. It is a very powerful neurotoxin but in Botox procedure it is used in extremely small concentration so it does not cause harmful effects. Botox process usually lasts for four to six months.

Botulinum acts as acetylcholine antagonist and inhibits the release of acetycholine neurotransmitter at the neuromuscular junction. This inhibits the signalling between motor neurons and facial muscles. As a result, the facial muscles are not able to contract and hence wrinkles are not formed on skin.

nevsk [136]3 years ago
5 0

Answer;

-Botulin

Explanation;

Botox injections smooth facial wrinkles because botulin is an ACh antagonist that blocks the underlying facial muscles.

-Botox injections are the best known of a group of medications that use various forms of botulinum toxin to temporarily paralyze muscle activity. This toxin is produced by the microbe that causes botulism, a type of food poisoning.

-These botox injections have the ability to reduce the appearance of some facial wrinkles. They are also used to treat such problems as repetitive neck spasms, excessive sweating, overactive bladder and lazy eye.

-Botulinum toxin acts by binding presynaptically to high-affinity recognition sites on the cholinergic nerve terminals and decreasing the release of acetylcholine, causing a neuromuscular blocking effect.

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8_murik_8 [283]

Answer:

read the explanation.

Explanation:

Both are enzymes, both has active sites because they are enzymes. A difference is that serine proteases has serine aminoacids in it active site. The aspartic proteases has an activated water molecule bond to one or more aspartate aminoacid in its active site.

Serine proteases are two main kinds, chymotrypsin and subtilisin kind. Aspartic proteases are three main kinds, pepsin, cathepsin and renins.

Serine proteases are found either in eukaryotes and prokaryotes, meanwhile the aspartic proteases are found mainly in eukaryotes as molds and yeast but rarely in prokaryotes such as bacteria.

Hope this info is useful.

3 0
3 years ago
Discuss three potential benefits and three possible harmful effects of genetic modifications on humans. Be thorough and specific
Andreyy89

Answer:

cess for GE crops conducted by the U.S. Environmental Protection Agency (EPA), the U.S. Department of Agriculture (USDA), and the U.S. Food and Drug Administration (FDA). Other evidence came from studies published by regulatory agencies in other countries or by companies, nongovernmental organizations (NGOs), and academic institutions. The committee also sought evidence from the public and from the speakers at its public meetings and webinars.1

The committee thinks that it is important to make clear that there are limits to what can be known about the health effects of any food, whether non-GE or GE. If the question asked is “Is it likely that eating this food today will make me sick tomorrow?” researchers have methods of getting quantitative answers. However, if the question is “Is it likely that eating

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1 The committee has compiled publicly available information on funding sources and first-author affiliation for the references cited in this chapter; the information is available at http://nas-sites.org/ge-crops/.

Page 172

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3 years ago
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nervous and chemical responses.
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Fossil fuel and nuclear plants both heat water in order to turn _____?
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Answer:

i thinkits no a .to turn turbines.

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Answer:

Purpose- "the reason why something is done or used"

Research- An open access, peer reviewed Journal. Information about a topic that is  gained by investigating prevous information gathered by someone else. systematic investigation. A systematic way of gathering data and harnessing curiosity.

Avoiding Bias- Avoiding Bias means to write info with curiosity and with research, not using personal opinion or preferance to write info.

Hypothesis- May be described as an educated guess based on research to describe and/or to explain the effect of a certain cause. Usually written in If....Then.... (A specific testable Prediction describing what you expect to happen in a certain circumstance)

Experiment-An emperical Procedure using scientific method to test and explain a certain circumstance.

Also, A trial or test, carried out under controlled conditions, to discover something unkown, to verify a hypothesis.

Independent Variable- The Variable that is changed during an experiment.

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Control- The Control variable is the Variable that remains Constant and does not change.

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