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lorasvet [3.4K]
3 years ago
9

Four main types of Carbon-Based Molecules chart?

Biology
1 answer:
Dvinal [7]3 years ago
8 0
Monosaccharides , amino acids, nucleotides, and fatty acids. These are polymers
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A mutation that causes production of a defective pilus in a bacterium will prevent __________.
daser333 [38]

Answer:

The correct answer is: Attachment.

Explanation:

  • Pilus are thread like structures which are present on the surface of the bacterial cell.
  • They are mainly responsible for attaching the bacterial cells to a substrate, for obtaining food or to an eukaryotic cell for the purpose of infection.
  • Pilus also mediate the process of conjugation in some bacterial cells.
  • Conjugation is a process by which genetic material or plasmids are transferred from one bacteria to another through a channel formed in between the two bacteria by the help of the pilus.
  • Pilus also helps the bacteria by preventing them from getting recognised by the immune cells in the host.
  • A defective pilus will affect all the above processes, resulting in death of the bacteria.
7 0
4 years ago
When confronted with a stressful event, your sympathetic nervous system speeds up your stomach's digestive activity. triggers an
mariarad [96]

The correct choice is increases your heart rate and respiration.

Your sympathetic nervous system increases your heart rate and respiration when confronted with a stressful event.

sympathetic nervous system also mobilizes body for action, increases breathing and sweating, makes pupils dilated ad lastly decreases stomach's activity.

6 0
4 years ago
How do lungs and airways compare among birds and mammals?
Shtirlitz [24]

Answer:

Birds do not have a diaphragm; instead, air is moved in and out of the respiratory system through pressure changes in the air sacs. ... Bird lungs do not expand or contract like the lungs of mammals. In mammalian lungs, the exchange of oxygen and carbon dioxide occurs in microscopic sacs in the lungs, called 'alveoli.

Explanation:

8 0
3 years ago
Oil, coal, natural gas, and uranium are used to generate electrical energy. What is true about ALL of them
skad [1K]

none of it is renewable


5 0
4 years ago
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What will happen if the niches of two organisms were moved to the others ecosystem/
mart [117]

Answer:

The answer is if the niches of two organisms were moved to the other ecosystem they would compete with one another for the same food and other resources in the environment. Eventually, one species would be likely to outcompete and replace the other.

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3 years ago
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