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jasenka [17]
3 years ago
7

In E. coli, DNA polymerases I and III differ in many regards. Which of the following statements is not accurate? In E. coli, DNA

polymerases I and III differ in many regards. Which of the following statements is not accurate? The processivity of DNA synthesis is an order of magnitude greater for DNA polymerase III as compared to DNA polymerase I. DNA polymerase III is responsible for the majority of DNA synthesis in E. coli. DNA polymerase I can replace RNA primers with DNA; DNA polymerase III does not. DNA polymerase I has 5' exonuclease activity; DNA polymerase III does not. DNA polymerase I is able to proofread; DNA polymerase III is not.
Biology
1 answer:
Alexus [3.1K]3 years ago
3 0

Answer: DNA polymerase I is able to proofread; DNA polymerase III is not.

Explanation:

Escherichia coli is a gram negative anaerobic bacteria that is found in the gastrointestinal tract of and humans and animals. Escherichia coli has 5 types of DNA polymerase.

a. Polymerase I is used to repair any damaged DNA and proof reading

b. Polymerase II is used in proof reading, DNA Replication and repairs.

c. Polymerase III is primarily responsible for DNA replication. It also has the ability to proof read.

d. Polymerase IV is used to change genetic information of Escherichia coli.

e. Polymerase V is used in DNA repair in Escherchia coli.

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guajiro [1.7K]

Answer:

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Explanation:

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8 0
2 years ago
What purpose does pyruvate serve in cellular respirations
scoundrel [369]
In order to survive, all the cells in your body need energy. ... To provide this energy, your cells must break down the glucose in your food during a process called glycolysis and convert it into pyruvate<span>, sometimes called pyruvic acid, and the molecule that feeds the Krebs cycle, our second step in </span>cellular respiration<span>.</span>
4 0
3 years ago
_____ are the hardest nonbony structures in our body<br><br>pls tell tommorow is my exam!!​
valentinak56 [21]

Answer:

Tooth enamel is the hardest substance in the body.

This resilient surface is 96 percent mineral, the highest percentage of any tissue in your body – making it durable and damage-resistant.

3 0
2 years ago
What’s is the role of all four types of lipids: fats, phospholipids, waxes, and steroids.
Reika [66]

A phospholipid is composed of two fatty acids, a glycerol unit, a phosphate group and a polar molecule. The phosphate group and polar head region of the molecule is hydrophillic (attracted to water), while the fatty acid tail is hydrophobic (repelled by water). When placed in water, phospholipids will orient themselves into a bilayer in which the nonpolar tail region faces the inner area of the bilayer. The polar head region faces outward and interacts with the water.


Phospholipids are a major component of cell membranes, which enclose and protect the cytoplasm and other contents of a cell. Phospholipids are also a major component of myelin, a fatty substance that is important for insulating nerves and speeding up electrical impulses in the brain. It is the high composition of myelinated nerve fibers that causes white matter in the brain to appear white.



Steroids and Waxes

LDL and HDL Particles

Illustration of a low density lipoprotein (LDL), or bad cholesterol, molecule (left) and a high density lipoprotein (HDL), or good cholesterol, molecule (right), showing their comparative sizes. JUAN GAERTNER/Science Photo Library/Getty Images

Steroids have a carbon backbone that consists of four fused ring-like structures. Steroids include cholesterol, sex hormones (progesterone, estrogen, and testosterone) produced by gonads and cortisone.


Waxes are composed of an ester of a long-chain alcohol and a fatty acid. Many plants have leaves and fruits with wax coatings to help prevent water loss. Some animals also have wax-coated fur or feathers to repel water. Unlike most waxes, ear wax is composed of phospholipids and esters of cholesterol.

4 0
2 years ago
Destiny has distal symphalangism - her fingers and toes are stiff, with tiny nails. She looks it up and finds it is an autosomal
san4es73 [151]

Answer:

1/2

Explanation:

Distal symphalangism is a very rare bone disorder characterized by ankylosis of the distal interphalangeal joints of the hands and/or feet.

Back to the prior issue,

Probability is a field of mathematics that deals with calculating

the likelihood of occurrence of a specific event.

The likelihood of an event is expressed as a number between zero

(the event will never occur) and one (the event is certain). For

example, the probability of an outcome of heads on the toss of a

fair coin is ½ or 0.5. The probability of an event can also be

expressed as a percentage (e.g., an outcome of heads on the toss

of a fair coin is 50% likely) or as odds (e.g., the odds of heads on

the toss of a fair coin is 1:1).

So the probability of her child inheriting her condition is 1/2 since there are only 2 possible outcomes.

8 0
3 years ago
Read 2 more answers
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