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sergejj [24]
3 years ago
13

How do diffusion helps animals exchange gases.

Biology
1 answer:
attashe74 [19]3 years ago
6 0
Water Or Air Is The Answer
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Students are modeling mRNA during the process of protein synthesis. Which answer choice correctly describes the model of the mRN
ivanzaharov [21]

The mRNA strand is complementary to the DNA template strand; however, uracil instead of thymine is paired with adenine.

<h3>What is RNA?</h3>

This is referred to as ribonucleic acid with its base adenine being paired with uracil.

The  mRNA strand which is known as messenger RNA is complementary to the DNA template strand and carries protein information from the DNA to cytoplasm for appropriate translation.

Read more about mRNA here brainly.com/question/12388408

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4 0
2 years ago
How many dna molecules are present in your diploid cells
Tcecarenko [31]

Answer:

92 molecules

Explanation:

DNA or Deoxyribosenucleic acid is polynucleotide made up of several nucleotides containing the genetic information of an organism. In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA, tightly coiled many times around proteins called histones to support its stucture.

Human cells, like myself, contains 23 pairs of chromosomes (46 chromosomes in total). Each pair coming from each parent. Each chromosome is formed by two strands of DNA held together by hydrogen bonds forming the DNA double-helical structure. These two DNA strands form a base pair, which is a unit of two nucleotide bases bound to each other by hydrogen bonds. According to the complementary base pairing rule, Adenine (A) pairs with Thymine (T) while Guanine pairs with Cytosine (C).

Since there are 46 chromosomes in a diploid human cell and each chromosome consists of 2 DNA strands, then, there are 46 × 2 = 92 strands/molecules of DNA in each human diploid cell.

7 0
3 years ago
In cells, some molecules can move down their concentration gradients by crossing the phospholipid portion of the membrane direct
Kay [80]

Answer:

In cells, some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a process called facilitated diffusion.

Explanation:

<h2>Follow instagrm at --> mvnnyvibes</h2>
4 0
2 years ago
Which characteristic of bacteria makes them efficient transgenic organisms to produce insulin or other medicines?
emmainna [20.7K]

The characteristic of bacteria that makes them efficient transgenic organisms to produce insulin or other medicines is they readily accept new genetic material.

<h3>What do you mean by Transgenic organisms?</h3>

Transgenic organisms may be defined as an organism whose genome has been modified by the insertion of one or more foreign (non-self) DNA sequences from another species via artificial means.

A Plasmid is a circular DNA that assists in the insertion of foreign DNA sequences into the bacterial cell.

Therefore, the characteristic of bacteria that makes them efficient transgenic organisms to produce insulin or other medicines is they readily accept new genetic material.

To learn more about Transgenic organisms, refer to the link:

brainly.com/question/3443891

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7 0
2 years ago
una de las hebras de ADN de un cromosoma de cierto organismo tiene 5 millones de bases nitrogenadas ¿cuantos nucleótidos debe te
avanturin [10]
La hebra complementaria debe tener 5 millones de nucleótidos, porque cada nucleótido tiene una base nitrogenada, y la hebra complementaria debe tener la misma cantidad de bases nitrogenadas que la hebra original. (Recuerda que las dos hebras "encajan" una con otra).


Ver más en Brainly.lat - https://brainly.lat/tarea/8051246#readmore
6 0
3 years ago
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