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Dmitry [639]
2 years ago
9

Quiz

Biology
1 answer:
Umnica [9.8K]2 years ago
4 0

Answer:

wheres then diagram?

Explanation:

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Which molocule is used to cut out a section of dna
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Answer:

Restriction enzymes (endonucleases) are used to cut the DNA into fragements.

Explanation

Restriction enzymes are obatained from bacteria where they are utilized by bacteria for protection against viruses. Restriction enzymes are used in biotechnology research. There are several restriction enzymes and each cut the DNA at specific site known as recognition site which is usually 4-8 neucleotide long. They produce sticky ends (cutting the both DNA strand on different site) and blunt ends (cutting the both DNA strand on same site) on DNA fragments.

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3 years ago
A wave front has the form of a
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The rigth answer is D.

The wavefront or wavefront is an equal phase surface of a wave, i.e., these points have the same travel time from the source. The concept is used to describe the propagation of waves such as sound or electromagnetic radiation (light, radio waves, etc.). In a homogeneous and isotropic medium, in which the waves propagate without deformation, two types of particular waves are distinguished according to whether the wavefronts are spheres (spherical wave) or planes (plane wave).

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3 years ago
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Answer:

e. secretion, absorption and chemical protection

Explanation:

Epithelial tissues is responsible for the protection of the skin, absorption of nutrients during digestion and secretion of waste materials. These tissues form covering to all body surfaces. They also perform a variety of other functions such as excretion of waste substances, filtration of air from dirt and particles and clean the air that is inhaled, diffusion, and sensory reception.

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Which two substances bind using a lock-and-key mechanism?
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<span>Enzyme and substrate bind using a lock-and-key mechanism. </span>
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When making observations, you should provide a general description of the subject, rather than going into too much detail.
antoniya [11.8K]

Answer:

yeah thats correct

Explanation:

is there any question?

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2 years ago
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