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ANTONII [103]
3 years ago
7

What the answer pls science

Biology
1 answer:
Ganezh [65]3 years ago
6 0

Answer:

B

Explanation:

for someone to choke it means the person lacks oxygen in the sense that its oxygen path has been blocked so its B

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Why is it necessary for the DNA to make a copy of itse
spin [16.1K]

DNA is a huge molecule with lakhs of genes. At time of protein synthesis, only one or a few genes are needed which is very difficult to synthesize directly from that huge molecule.

Secondly, DNA is a very important molecule, which remains inside nucleus. All the protein synthesizing elements like amino acids etc are present in cytoplasm. So protein synthesis inside nucleus is impossible.

<h3><u>Explanation:</u></h3>

DNA is the genetic molecule of an organism. It is a huge polymer of different nucleotides stacked together one after the other. One gene occupies a very small fragment of this DNA. So during protein synthesis, if protein is directly synthesized from the whole DNA, a huge portion of energy will be lost fully unwinding the helical structure. And there will be more chances of an error and mutations will creep in very easily.

Secondly, DNA remains inside the nucleus of a cell. And inside the nucleus there's no entry of amino acids, which are essentially needed for protein synthesis. So protein synthesis from DNA is very risky and practically not feasible.

6 0
4 years ago
Which of the following describes an old-growth forest? A. A forest that has been planted with pine trees to be harvested for pap
andrew-mc [135]
It would be B. A bristlecone pine forest that contains tree that are over 500 years old. why? because when you think about it the other 3 were man planted and man done but B. was not it was the natural way/ an old-growth forest.
5 0
3 years ago
Read 2 more answers
Si una población crece mucho otra vez después de un cuello de botella con el paso del tiempo aumentará diversidad genética ¿por
sammy [17]

Answer:

los mecanismos capaces de generar diversidad actúan para incrementar la variabilidad genética en la población que sufrió el cuello de botella

Explanation:

Un cuello de botella se refiere a una reducción drástica en el tamaño de una población (por ejemplo, debido a una catástrofe natural). Un cuello de botella es un fenómeno que está asociado a la ​reducción en la variación genética y fijación de ciertos alelos en la población resultante, lo cual es causado por la deriva genética, es decir, debido al muestreo al azar de los individuos que formarán la población en la siguiente generación. Paulatinamente, los mecanismos capaces de generar variabilidad genética aumentarán nuevamente la diversidad de la población que sufrió el cuello de botella. En una población de reproducción sexual, la variación genética se genera mediante cuatro procesos diferentes: 1-mutación (es decir, la aparición de nuevos alelos debido a alteraciones en la secuencia de ADN); 2-recombinación (es decir, el intercambio de información genética entre cromátidas no hermanas durante la meiosis); 3-segregación independiente de cromosomas durante la meiosis (capaz de producir nuevas combinaciones de alelos) y 4-fertilización al azar (lo cual también incrementa el número de combinaciones entre gametos que darán lugar a un nuevo individuo).

4 0
3 years ago
1. Algae are plantlike organisms that live in the water. These algae have been in sunlight for several
puteri [66]

The complete question is :

Algae are plantlike organisms that live in the water. These algae have been in sunlight for several hours now. What can the algae do because they are in sunlight? What does this mean for the number of energy storage molecules in the algae?The algae can . . .

take in carbon from the air. The carbon is used to make energy storage molecules.

take in carbon from the air. The carbon is used to break down energy storage molecules.

give off carbon to the air. Giving off carbon allows them to make energy storage molecules.

give off carbon to the air. Giving off carbon uses up energy storage molecules.

Answer: Option A

Explanation:

Algae are plant like organism found in water, they are capable of performing photosynthesis.

Th algae in water trap carbon dioxide from the atmosphere( water) in order to convert into energy molecules known as glucose in the presence of sunlight.

This means the number of energy storage molecules in the algae increases after photosynthesis.

This is how the algae uses sunlight in order to prepare glucose from them.

5 0
3 years ago
Can a squirrel fly? ​
Anika [276]

Answer:

yes if u trow it and if u put it on a plane

Explanation:

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3 years ago
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