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Minchanka [31]
2 years ago
7

Rings of muscle in the digestive tract that can open and close, regulating the movement of food into or out of parts of the dige

stive system, are:________
Biology
1 answer:
nalin [4]2 years ago
4 0

The ring of the muscle in the digestive tract, which can open and close, or regulate the movement of food into or out of parts of digestive system, is the pyloric sphincter.

The pyloric sphincter is present at the bottom of the stomach, and it is a muscular valve that opens to allow the food materials to pass from the stomach to the top of the small intestine of our digestive system.

Hence, The pyloric sphincter serves as a type of gateway between stomach and small intestine, and It allows the contents of the stomach like foot materials to pass into the small intestine. Also, It prevents digestive juices or partially digested food from re-entering into the stomach.

Learn more about pyloric sphincter here

brainly.com/question/15582646

#SPJ4

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bija089 [108]
Glycerol + 2 fatty acids
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In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, so t
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Explanation:

Carbon has four electrons in its outer most orbit and it can share four more electrons from other atom to complete its valency while oxygen has 6 electrons in its outermost orbit and it can either charge the electron or gain two electrons from other atom.

Therefore in CO2_, the carbon atom shares its two electrons with two electrons of each oxygen atom and forms double bond with it. Thus, total pairs of electron to be shared by the atom of the molecule is two.

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3 years ago
You have isolated a mutant strain of Bacillus subtilis (which you designate wimP) whose endospores can be killed by boiling wate
Ivanshal [37]

Answer:

The correct answer is option e. "higher water content".

Explanation:

One of the features that make endospores resistant to high heat in its low water content. The cortex of the endospore osmotically removes the water from the interior of the endospore, condition that protects them from heat and radiation. The wimP spores that can be killed by boiling water most likely have a higher water content in comparison to wild-type endospore. This explains why wimP spores are susceptible to be killed with the heat generated by boiling water.

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4 years ago
When performing a self rescue, when should you swim to shore?.
AnnyKZ [126]

Self rescue when being done should involve an individual choosing to swim to shore as the last option.

<h3>What is Self rescue?</h3>

These are different forms of methods which are done by individuals to pull out of dangerous situations which may cause them being stranded.

It is always best to get to the shore through every possible means so as to prevent drowning and other unpleasant situations thereby making it the correct answer.

Read more about Self rescue here brainly.com/question/4850006

#SPJ4

7 0
2 years ago
Which of the following technologies would likely involve a bioengineer to design and build?
allochka39001 [22]

Answer:

surgical robot

Explanation:

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