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rusak2 [61]
3 years ago
9

Which photosystem releases the electrons for the electron transport chain?

Biology
1 answer:
WARRIOR [948]3 years ago
8 0

Answer:

B

PSII

Explanation:

good luck have a nice day

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Where can you find ribosomes in the cell?
ziro4ka [17]

Answer:

Ribosomes are found 'free' in the cytoplasm or bound to the endoplasmic reticulum (ER) to form rough ER.

Explanation:

In a mammalian cell there can be as many as 10 million ribosomes. Several ribosomes can be attached to the same mRNA strand, this structure is called a polysome.

5 0
3 years ago
How many bacteria cells are produced at time T4 ?
Arada [10]

Answer:

256.

Explanation:

If a bacterium divides once in every half an hour, it means it will double in half an hour. Hence a number of the bacterium after half an hour will be 1×2=2. After one hour the number of bacterium will be 2×2=4. Similarly, it one and a half hours it will be 4×2=8. In two hours it will be 8×2=16 in two and half hours, it will be 16×2=32. In three hours it will be 32×2=64. In three and half hours it will be 64×2=128. Hence, in 4 (four) hours the number of bacterium will be 128×2=256.

7 0
3 years ago
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Which of these accurately describes the process of translation?
marysya [2.9K]
<span>The correct answer is A) a single amino acid may have more than one codon that translates for it.</span>
<span>This property of the codon is called codon degeneracy and is the redundancy of the genetic code. As a result, there is the multiplicity of three-base-pair codon combinations that specify an amino acid and that increases tolerance to point mutations (synonymous mutations). Usually, the codons encoding one amino acid differ in the second or third position.</span>
3 0
4 years ago
What is the role of the cell membrane?
marysya [2.9K]

Answer:

The cell membrane is the border control and decides what particle can enter and exit the cell.

Explanation:

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4 years ago
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In a certain population, the allele causing sickle cell anemia has a frequency of 0.2. If the population is in genetic equilibri
tiny-mole [99]

Answer:  

32% population would be heterozygous for this gene.

Explanation:

Due to technical problems, you will find the complete explanation in the attached files

Download pdf
3 0
3 years ago
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