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nalin [4]
4 years ago
5

When some organic molecules, such as lipids, are added to water, vesicles can form. Which of the following best describes how sc

ientists hypothesize true cells evolved from vesicles?
A) Vesicles became enclosed by a membrane, thus becoming organelles for larger cells.
B) Vesicles containing amino acids fused to form nucleotides, RNA, and DNA.
C) Vesicles that contained self-replicating RNA grew, split, and passed their RNA to daughters.
D) Vesicles surrounded organic compounds and catalyzed reactions to form macromolecules.
Biology
1 answer:
nlexa [21]4 years ago
7 0

Answer: which of the following do scientists hypothesize were present in early earths atmosphere ammonia carbon dioxide hydrogen methane nitrogen and water when some organic molecules such as lipids are added to water vesicles can form. which of the following best describes how scientists hypothesize true cells evolved from vesicles

Explanation:

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Which term describes the coordinated action between two microorganisms that result in a heightened response or greater effective
Delvig [45]

Answer:

Synergism

Explanation:

Synergism is defined as the cooperation of two or more microorganisms that result in a heightened response or greater effectiveness.

8 0
3 years ago
How does oxygen enter your<br> bloodstream?<br> Please help
AleksandrR [38]

Answer:

haemoglobin

Explanation:

Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body

7 0
3 years ago
Which proteins is used as a chemical defense at body surfaces?
UNO [17]

Answer: Antimicrobial proteins.

Explanation:

Antimicrobial proteins are the type of proteins produced by the keratinocytes on the body surfaces. These proteins acts as the barrier and kills the microorganism which is trying to enter the body.

These are larger proteins containing more than 100 amino acids. They are often lytic in nature.

The cell membrane of the microbes is disrupted by the action of these amino acids or proteins on them.

5 0
3 years ago
Which solution of ethyl alcohol is more effective at inhibiting microbial growth: a 70% solution or a 100% solution? Why?
Triss [41]

Answer:

70% solution is more effective

Explanation:

The 70% solution is more effective at inhibiting microbial growth than the 100% solution of the ethyl alcohol.

This is because the pure ethyl alcohol coagulates the protein that is in contact with it.

Also, pure alcohol will tend to evaporate faster than the 70% solution of the ethyl alcohol and it will not be that much effective.

3 0
3 years ago
What type of cycle is the water cycle grouped as
geniusboy [140]

Answer:

hydrologic cycle

Explanation:

Water cycle. Water cycle, also called hydrologic cycle, cycle that involves the continuous circulation of water in the Earth-atmosphere system. Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff.

hope this helps :)

4 0
3 years ago
Read 2 more answers
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