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Archy [21]
3 years ago
6

Use the drop-down menu to complete the statement. One difference between prokaryotic cells and eukaryotic cells is that a eukary

otic cell contains , while a prokaryotic cell does not.
i need help
Biology
2 answers:
musickatia [10]3 years ago
6 0

Answer:

A difference between prokaryotic cells and eukaryotic cells is that a eukaryotic cell contains a defined nucleus and membranous organelles, whereas a prokaryotic cell does not.

Explanation:

The most striking feature of a prokaryote cell is the absence of a defined nucleus. This means that the genetic material is not surrounded by a nuclear membrane and is therefore dispersed in the cytoplasm. In prokaryotes, the bacterial chromosome and plasmids (small circular free DNA molecules in the cytoplasm) are also found.

It is worth noting, however, that the prokaryote cell does not differ only in the absence of a nucleus. In these cells, there is also no presence of membranous organelles. This means that no structures such as mitochondria, endoplasmic reticulum, Golgi complex and vacuoles are found.

Bingel [31]3 years ago
4 0

Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not.

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A circular molecule of DNA contains 1 million base pairs. If the DNA synthesis at a replication fork occurs at a rate of 100,000
lakkis [162]

Answer:

<h2>5 minutes </h2>

Explanation:

1. In bidirectional replication;  there are two replication forks, and each proceeding at a rate of 100,000 (as given in the question) nucleotides per minute.  

2. So, by  the given rate of replication, we can calculate that, it would require 5 minutes for the circular DNA molecule to be replicated by bidirectional replication because each fork synthesize  500,000 nucleotides in 5 minutes ( 100,000 per minute) ( as given, in 5 minutes × 100,000 nucleotides per minute= 500,000 and by 2 forks= 1,000,000) within the time period.  

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3 years ago
What does ATP lose when it is hydrolyzed?
larisa86 [58]
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5 0
2 years ago
If a dna analysis reveals that a cell has 60 ng of adenine and 20 ng of cytosine, how much thymine and guanine are in the cell?
Serggg [28]

Answer:

Thymine= 60 ng

Guanine= 20 ng

The complementary base pairing occurs between adenine and thymine and guanine and cytosine bases.

Explanation:

According to the Chargaff rule, a double-helical DNA molecule has an equal number or equal amount of adenine and thymine bases since adenine always pairs with thymine. Similarly, the amount of guanine base is equal to that of the cytosine base.

Chargaff rule is based on the complementary base pairing between purine and pyrimidine bases. According to the given information, the amount of adenine is 60 ng. Therefore, the cell would have 60 ng thymine. Similarly, the amount of the cytosine base in the cell is 20 ng which means that the cell would have 20 ng of guanine base.

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