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Zanzabum
3 years ago
12

8. Valves prevent blood from flowing backwards. Valves are located in the

Biology
2 answers:
Verdich [7]3 years ago
3 0

Answer:

Heart and artries

Explanation:

PLEASE MARK AS BRAINLIEST

slamgirl [31]3 years ago
3 0
The veins help not let the blood go backwards
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Sometimes, a person is born with one or more
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3) more genes in each cell than a person with a normal chromosome number.
7 0
3 years ago
Contrast energy transfer with energy transformation.​
Sloan [31]

Answer:n energy transfer, happens from one object to another without changing its form. For example, when you fill a pot of water and sit it on the stove, the water continues to heat until you turn it off. While in a energy transformation, the energy changes forms such as Chemical, kinetic.

Explanation:

5 0
4 years ago
What is the difference between a photoheterotroph and chemoheterotroph, and what are examples of these?
RoseWind [281]
<span>When classifying organisms like this, you are looking for two main descriptors of their lifestyle: how they get their energy and how they get their carbon. A phototroph is an organism that acquires its energy through harvesting photons. A chemotroph harvests energy from chemical bonds.

The term heterotroph is used to describe organisms that acquire carbon from organic substances (namely from other organisms). An autotroph is an organism that has the ability to fix atmospheric carbon CO2 into an organic form.

When you combine these terms, you get a word that describes how an organism harvests energy and carbon. So, a chemoheterotroph is an organism that acquires energy from chemical bonds, and uses acquires organic carbon from an external source (usually, in this case, the energy and carbon come from the same source, e.g., glucose). A photoheterotroph is an organism that gains energy from photons but gains carbon from an external organic source.

Most bacteria, fungi, and animals can easily be described as a chemoheterotroph. A specific bacteria would be Pseudomonas aeruginosa.

Photoheterotrophs would only be found in the prokaryote domains. An example would be Heliobacter. Just to note, there are very few genera of photoheterotrophs. Remember, they gain most of their energy from light (photons), and their carbon from an external organic source (i.e., they do not fix carbon).

</span><span>Basically, photoheterotrophs get energy from light and chemoheterotrophs get energy from breaking chemical bonds.
</span>
I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
3 0
4 years ago
The variance in a gene, which occur on a fixed spot on a chromosome is called a/an
Inga [223]

Answer:

allele

Explanation:

a spot on chromosome is an allele

4 0
3 years ago
Multiple Choice
Keith_Richards [23]

Answer:

upper and lower seasonal

Explanation:

7 0
3 years ago
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