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Andrei [34K]
3 years ago
15

What are the wavelike contractions of smooth muscle that move food down the esophagus called

Biology
1 answer:
stiks02 [169]3 years ago
7 0

When you swallow food, it doesn't just drop down into your stomach. Muscles contract in a wave-like motion to move the food along through the esophagus. This muscle movement is called, peristalsis, or peristaltic waves. These peristaltic waves contract behind the food bolus pushing it along the digestive tract.

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docker41 [41]

Answer:

Plato Answer

Explanation:

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An embryo can’t grow without its stem cells, so people have ethical concerns about their use. Adults can provide consent to donate their stem cells, so there are fewer ethical issues regarding the use of adult stem cells.

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3 years ago
All arthropods have similar nervous systems. What are the components of an arthropod's nervous system?
rodikova [14]
The answer regarding the components of an arthropod's nervous system would be item C. It consists of brain, nerve chord, and ganglia. The brain is located dorsally, while the nerve cord together with the ganglia is ventrally structured — extending on each segment of an arthropod’s body.
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3 years ago
Which of the following is NOT true of enzyme activity? a. enzyme shape may change during catalysis b. the active site on an enzy
Jobisdone [24]

Answer:

D. Each enzyme can catalyze a wide variety of different reactions

Explanation:

Each enzyme can only catalyze a few, specific types of reactions.

Since enzymes and substrates are very specific to one another, enzymes cannot catalyze a wide variety of reactions.

If a substrate is not the correct one that fits in the enzyme's active site, a reaction will not occur.

So, each enzyme can only assist in a few reactions.

The correct answer is D. Each enzyme can catalyze a wide variety of different reactions

5 0
3 years ago
Which compound is released by photosynthesis and used in aerobic respiration? question 8 options: atp carbon dioxide oxygen wate
Alex

Answer;

-Oxygen

Explanation;

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-While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

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The answer is B) stop condons.

Stop codons, UGA, UAA, and UAG, are nucleotide triplets that signal to stop the translation of an mRNA sequence into proteins. 
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3 years ago
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