BIOLOGY HIGH SCHOOL

During recombinant dna technology which structure is used to cut the dna at a specific site? restriction enzymes dna ligase dna helicase vector plasmid

Answers

Answer 1
Answer: Restriction enzymes are used to cut the DNA at a specific site.
The functions of others:
DNA helicase - to breakdown the hydrogens bonds in dna polymer
DNA ligase - is used to connect the DNA fragments
vector plasmid - is used to transfer a gene.

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HIGH SCHOOL

Emphysema is a health condition in which the lungs can no longer expel carbon dioxide normally. as a result, a person who has emphysema may have high blood acidity levels.

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Carbon dioxide increases acidity when dissolved in water e.g. in blood as it reacts with the water to form carbonic acid which has a slightly acidic pH.
MIDDLE SCHOOL

Is Earth closest to the sun during the month of August ?

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No, that would be January.

Earth is closest to the sun every year in early January, when it's winter for the Northern Hemisphere. We're farthest away from the sun in early July, during Northern Hemisphere summer.

COLLEGE

Which of the following is the most serious effect of water pollution for humans?

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The answer is A infectious disease 

The answer is A.)  infectious diseases
MIDDLE SCHOOL

The chemical reactions that cells use to acquire and use energy to live, grow an reproduce are called

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Answer: Metabolism

Explanation:

HIGH SCHOOL

What subunits are proteins broken down into during digestion?

Answers

Answer: Proteins are digested within the stomach and little intestine. Protease enzymes break down proteins into amino acids.

Explanation:

HIGH SCHOOL

Which molecule (carbohydrate, lipid, protein) supplies more ATP one broken down?

Answers

The number of ATP molecule depends on type of molecule broken down carbohydrate most commonly broken down to make  ATP
HIGH SCHOOL

How long does it take for someone to recover from a strained acl mcl and calf?

Answers

Someone with a partially or completely torn MCL might have swelling and pain in the first 24 hours of injury. This injury can heal on its own after 1 to 6 weeks of resting the joint. A mild MCL injury or grade one sprain should take 3 to 6 weeks to make a full recovery. A more severe grade 2 or grade 3 injury may take 8 to 12 weeks.
MIDDLE SCHOOL

What is most of the waste in the US?

Answers

Garbage is the most of the waste in the US.
There are 55%.
As a nation, Americans generate more waste than any other nation in the world, officially with 4.4 pounds (2.0 kg) of municipal solid waste (MSW) per person per day,[1] with another study estimating 7.1 pounds per capita per day.[2] Fifty five percent of this waste is contributed as residential garbage, while the remaining forty five percent of waste in the U.S.'s ‘waste stream' comes from manufacturing, retailing, and commercial trade in the U.S. econom
MIDDLE SCHOOL

If a person with a mass of 70 kg is standing on top of a cliff that is 30 meters high, how much gravitational potential energy does the person
have, relative to the top of the cliff?
A. 0 J
B. 30 J
C. 2,100 J
D. 20,580 J

Answers

Answer:

C. 2,100 J

Explanation:

PE = 20593.965 J

m = 70 kg

g = 9.80665 m/s2

h = 30 m

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