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tiny-mole [99]
3 years ago
11

Which of the following prevents blood from flowing backward through the circulatory system?

Biology
1 answer:
netineya [11]3 years ago
6 0

Answer: Valves in the veins

Explanation: The flow of the blood inside the body takes place through the veins and arteries. The oxygenated blood from the heart is supplied to the different parts of the body.

The blood flows from the capillaries to the venules and from there to the veins. The blood moves in the veins by the rhythmic movement of the smooth muscles in the body.

Most of the blood moves against the gravity so there is a chance that it can backflow so to prevent this there are valves in the veins known as one way valves.

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Romashka [77]

Answer:

https://guides.lib.purdue.edu/c.php?g=352816&p=2377942#:~:text=figures%20and%20tables.-,Discussion,the%20reasons%20for%20the%20errors.

Explanation:

used this help with your lab write up

7 0
3 years ago
Which questions below could appear in a dichotomous key for fish? Check all that apply.
jarptica [38.1K]

Answer:

Does the specimen have spots on its body?

Does the specimen have more than three gills?

Does the specimen often eat shrimp instead of other fish?

Explanation:

those are the answeres exept the last one

6 0
3 years ago
All of the following are properties of a population EXCEPT*
kotegsom [21]
“Destiny” is not a property of a population.
6 0
3 years ago
Internal and external fertilization both _____. _____ Select one: a. produce single-celled zygotes b. occur only among invertebr
Natali [406]

Answer:

Option-A

Explanation:

Fertilization refers to the fusion of the male and female gamete to form the zygote.

When the fertilization occurs inside the organism through insemination then it is known as the internal fertilization and when it occurs outside the organism like observed in the amphibians when male and female gametes fuse in the water is known as external fertilization.

Both are different type of fertilization but share a similarity that is the formation of a single cell called the zygote which grows into the embryo by the mitotic division. The embryo later develops into the organism.

Thus, Option-A is correct.

6 0
3 years ago
What are the monomers that determine the shape of a protein?
Naddik [55]

Answer:

Chains of amino acids make proteins. They can fold into many different complex shapes.

8 0
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