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irakobra [83]
4 years ago
13

Bacteria that live around deep-sea, hot-water vents obtain energy by oxidizing inorganic hydrogen sulfide belched out by the ven

ts. They use this energy to build organic molecules from carbon obtained from the carbon dioxide in seawater. These bacteria are __________.
A. chemoheterotrophs
B. photoheterotrophs
C. chemoautotrophs
D. photoautotrophs
Biology
1 answer:
Sophie [7]4 years ago
4 0

Answer:

Chemoautotrophs.

Explanation:

Autotrophs may be defined as the organism that can prepare their own food with the help of chemical and light. Two types of autotrophs are chemoautotroph and photoautotrophs.

Chemoautotrophs are the organisms that can prepare their own food with the help of chemicals. The bacteria living around deep sea and hot water vents are considered as chemoautotrophs because they prepare their food with the help of carbon present in their surroundings.

Thus, the correct answer is option (A).

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The mindset is the most important trait to pass on to your children.

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2. Name a microbe that lacks a cell wall and would find hypotonic environments detrimental.
Alina [70]

Answer:

I so I am also a bit confused, but I hope this could answer your question!

Explanation:

The bacteria possess a cell wall composed of peptidoglycan molecule formed by the amino acids called murine.  The bacterial cell wall helps in the survival of the bacteria in some extreme condition like when placed in a hypotonic solution.

The hypotonic solution is formed when it has low solute concentration and high water amount when compared. When the bacterial cell will be placed in hypotonic solution then the water will move inside the cell down the concentration gradient as a result of which the bacterial cell will swell but will not burst.

This happens as the cell wall contains expansin protein which allows the cell wall to expand and provides rigidity to the cell.

7 0
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In "gastrulation" cells begin to differentiate. They form different types of tissues so they can accomplish different purposes i
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Answer:

The statement that says that In "gastrulation" cells begin to differentiate and they form different types of tissues so that they can accomplish different purposes in the body, is true.

Explanation:

Gastrulation involves a process of cell division, migration and differentiation, being one of the stages of embryonic development.

Cell differentiation and migration in gastrulation leads to the formation of germ layers, which are responsible for forming different tissues and fulfilling different functions in the body:

  • <em>The outermost lamina is called the </em><em>ectoderm</em><em>, which can give rise to nerve tissue and part of the skin tissue. </em>
  • <em>The </em><em>mesoderm</em><em> is the middle lamina, and from it vascular, bone, muscle, and joint tissue can develop, as well as tissues of excretory and reproductive organs.  </em>
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It is true, then, that <u>In gastrulation cells begin to differentiate and form different types of tissues so they can accomplish different purposes in the body</u>.

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