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Marat540 [252]
3 years ago
10

Qual a importância da epiglote no processo de ingestão

Biology
1 answer:
Naily [24]3 years ago
6 0
It is very important to the ingestion process
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18) Do all bacterial cells have this circular DNA? Explain.
melomori [17]

Answer: Yes

Explanation: Bacteria have single circular chromosomes which are located at the cytoplasm in the structure called the nucleoid.

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3 years ago
The bulk of the energy required by the eukaryotic cell is generated by the mitochondria. the mitochondrion consists of cristae t
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<span>are elaborate folds on the inner membrane which hold the enzymes and electron carriers of aerobic respiration.</span>
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3 years ago
Individual amoebae of the slime mold Dictyostelium discoideum aggregate to form a spore-producing fruiting body. Cheaters make s
jeka57 [31]

Answer:

It is an example of frequency-dependent selection. Due to several cheaters in the population, the fruiting body's stalk is not made properly. So, all individuals have lesser fitness.

Explanation:

Natural selection:  

The population contains both superior as well as an inferior organism where natural resources are limiting so it will cause competition between organisms. As a result of competition, it will select superiors, and inferiors are deleted and they are given reproductive advantages. Due to this reproductive advantage new population emerges. It is more suitable for the environment.  

Natural selection divides into three parts that are directional, disruptive, and stabilizing selection.

The given question is the example of frequency-dependent selection. Due to several cheaters in the population, the fruiting body's stalk is not made properly. So, all individuals have lesser fitness. Directional selection will not lead to fixation of cheater genotype. This is because cheating can be controlled through high relatedness in social groups, resulting from kin discrimination.  

It is controlled through positive pleiotropy, where the cooperation gene has an additional vital function. Cheating will be controlled if stalk vs. spore is a result of environmental, not genetic factors. An example, spore fate can be a result of the position in the mitotic cell cycle.

6 0
3 years ago
Which of these statements best explains why the inner core of Earth does not melt although it has very high temperatures?
Ber [7]

Answer:

The core is in a cube structure, extreme temperatures make the atoms to move so quickly that there is no alteration of the structure hence, no melting.

Explanation:

In the case of extremely high temperatures, atoms change position but still keep their original shape.

Further explanation:

In the case of high temperatures, the atoms making up a cube move rapidly and change position, the change of position is the melting.

6 0
3 years ago
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Similarities between rotating earth and non rotating earth
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Wind and ocean patterns will be similare
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