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3 years ago

DNA polymerase I, from E. coli, has three different catalytic sites. Which of the following is NOT one of them?

Biology

1 answer:

Leokris [45]3 years ago

5 0

Answer:

RNA-dependent RNA polymerase.

Explanation:

DNA polymerase I is present in E.coli that are responsible for the prokaryotic DNA replication. The DNA polymerase I was discovered by Arthur Kornberg. This enzyme is coded by the gene polA.

DNA polymerase I has the activites of DNA-dependent RNA polymerase, DNA-dependent DNA polymerase and RNA-dependent DNA polymerase. The RNA-dependent RNA polymerase is generally present in the reverse transcriptase in case of viruses only. RNA-dependent RNA polymerase catalytic site is not present in DNA polymerase I.

Thus, the correct answer is option (1).

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What is the difference between an unsaturated and a saturated fat?

Eduardwww [97]

Saturated fatty acids lack double bonds between the individual carbon atoms, while in unsaturated fatty acids there is at least one double bond in the fatty acid chain. Saturated fats tend to be solid at room temperature and from animal sources, while unsaturated fats are usually liquid and from plant sources :)

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3 years ago

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Lilit [14]

A city has flooded leaving many people without houses or cars. People are having to walk to go out to places.

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3 years ago

A patient who works in a coal mine is referred to an occupational health center. which services are provided to ensure the safet

Stels [109]

The services that will be provided to the patient are for health promotion and accident and illness prevention.
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3 years ago

These periodic changes on Earth are a result of the five major history that have occurred throughout Earth's

shepuryov [24]

Changes sea level by 100 meters

Exposure of continental shelf

Changes in continental shelf composition

Mass extinctions of species in certain areas

Changes in the water cycle

Changes in landscape

Changes in topsoil characteristics

Answer:

A. Ice Ages

Explanation:

These periodic changes on Earth are a result of the five major ICE AGES that have occurred throughout Earth's history

The five major Ice Ages that throughout the Earth's history we're the following:

1. the Huronian: this occurred around 2.4 billion years ago

2. Cryogenian: this followed Huronian age, and it occurred around the period of 850 million years

3. Agondean-Saharan: this major ice age occur around 460 million years ago.

4. Karoo this is a period of about 360 million years

5. Quaternary is the present age, and it has been in existence since about 2.6 million years ago till the moment

Hence, in this case, the correct answer is Ice Ages

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3 years ago

What behaviors would indicate to the charge nurse that one of the nurses could be experiencing countertransference? (found in th

sasho [114]

The charge nurse must observe some unconscious positive or negative expression of nurse’s level of involvement with the patient where it often result to displaced emotions, stemming from the clinician’s previous life experience and having a detrimental effect on the relationship between clinician and client.

With these indications, one of her nurse is experiencing countertransference where she is over identifying with the patient and that action will be reflected in the quality of care the patient receives.

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3 years ago

Read 2 more answers