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Papessa [141]
3 years ago
9

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. I

f a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?
A) The repressor will no longer bind to the operator.
B) The repressor will no longer bind to the inducer.
C) The lac operon will be expressed continuously.
D) The lac operon will function normally.
Biology
1 answer:
Wewaii [24]3 years ago
4 0

Answer:

D) The lac operon will function normally.

Explanation:

  • The promoter area can be described as the area that causes the transcription to initiate for a particular gene. Promoters may be near the genes from which they initiate transcription or they may display multiple scenes upstream.
  • The lock operon works normally because the promoter area can still enable transcription on many base pairs. Detects repression promoter and works normally.
  • so correct option is D) The lac operon will function normally.

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How does the structure of a brain cell related to its function?
lesya [120]

Solution:

Structure dictates function. Ribosomes provide another good example of structure determining function. These small cellular components are made of protein and ribosomal RNA (RNA).Their main function is to translate messenger RNA, or mRNA, into strings of amino acids called proteins.

The structure and shape of each type of human cell depends on what function it will perform in the body. For example, red blood cells (RBCs) are very small, flat discs, which allows them to easily fit through narrow capillaries and around sharp corners in the circulatory system to deliver oxygen throughout the body.

Neurons carry messages from the brain and spinal cord to the rest of the body, using electrical signals down their lengths and chemical signals between neurons. Since electrical signals travel much faster than chemical signals, neurons are long and thin to minimize the number of slower chemical signals that would be required between links in a chain of many shorter neurons.

The elongated shape of muscle cells allows the contraction proteins to line up in an overlapping pattern that makes muscle flexing possible.

And human sperm cells’ structures allow them to “swim” long distances to reach an egg for fertilization. They do this by using flagella, their long whip-like tails, and also by being very small, carrying little more than the DNA for a potential zygote.

This is the required answer.

7 0
4 years ago
III. What do we know about Chickenpox and Shingles? Is it viral or bacterial disease? Provide details for the following: cause;
My name is Ann [436]

Both chicken pox and shingles are caused by varicella zoster.

Explanation:

Shingles and chicken pox both occurs by the attack of the virus, varicella zoster.

Cause: - The chicken pox spreads through the infectious elements in a person’s cough, sneeze and breathing. The shingles occur when this virus gets reactivated.

Portal entry: - Chicken pox virus enters through the tract of respiration and shingles enter from a person who already have it.

Signs & Symptoms: - Pox includes- fever, blister like itchy rash and shingles include- blister rash which has a distribution that is like a band.

Incubation period: - Pox can stay for a minimum of 15 days approximately and shingles too last for few weeks.

Treatment and prevention: - Both include treatment of antiviral and both can be prevented by avoiding infected people and increasing body immunity etc.

5 0
3 years ago
The Shiga and diphtheria toxins target __________ in host cells.
klio [65]

Answer:

Protein synthesis.

Explanation:

Shiga toxin is expressed by the genome of the lamboid prophages. Diphtheria toxin is a type of toxin that causes diphtheria in the individual.  

The shiga and diphtheria toxin are proves to be harmful in the humans and causes harmful disease. Both these toxins inhibit the protein synthesis or translation of the host cell. The inhibition of protein synthesis causes drastic harmful effects in the individual.

Thus, the answer is protein synthesis.

7 0
3 years ago
20. Summarize each of Newton’s three Laws.
Alenkasestr [34]

Answer:

An object in motion stays in motion unless an external force acts on it.

Explanation:

Newton's first law, the law of inertia, states that an object will remain at rest or in motion unless acted upon by another force.

6 0
2 years ago
What two components are found as part of an enzyme?
ioda
Apoenzyme and a non-protein
4 0
2 years ago
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