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pantera1 [17]
3 years ago
12

Pick the statement that is true. a. cAMP is the inducer for the lac operon. b. In a positive inducible system the activator is t

ranscribe in an active form. c. In the lac operon transcription is initiated by binding the inducer to the promoter. d. A promoter mutation will change the frequency of initiation of operon transcription. e. Tryptophan is an inducer of the trp operon.
Biology
1 answer:
igor_vitrenko [27]3 years ago
3 0

Answer:

Option D

Explanation:

Tryptophan which is an amino acid is an inducer that stimulates the activation of the trp operon. The trp operon describes sequence of genesis that codes for biosynthetic enzymes for the amino acid tryptophan. The trp operon is regulated in such a way that when tryptophan levels are low or when they are high, the operon is expressed (turned "on") or repressed (turned "off") respectively. The trp operon is regulated by the trp repressor (binding of two molecules of tryptophan). Then this complex binds to the operator when tryptophan level is high.

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Explain two complex modes of human inheritance. Give examples. (I really just need a starter for this one.)
dolphi86 [110]
<span>Human genetics is the study of inheritance as it occurs in human beings. Human genetics encompasses a variety of overlapping fields including: classical genetics, cytogenetics, molecular genetics, biochemical genetics, genomics, population genetics, developmental genetics, clinical genetics, and genetic counseling.</span>
3 0
3 years ago
Many proteins are made and excreted from the cell. Using the list, put the cellular events in order. a. Vesicles containing prot
Irina-Kira [14]

Answer:

c. Proteins and lipids are made on the ER membrane and put in vesicles.

a. Vesicles containing proteins and lipids fuse with the Golgi bodies.

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Explanation:

Proteins are made by the ribosome machinery of the rough endoplasmic reticulum. The proteins made need to be packaged before they are sent outside the cell to their location. If the proteins are not packaged and tagged, then they will be degraded by different enzymes present in the cell. So, the packaging of the proteins is done by the Golgi-complex. After packaging is done and tags are added to the proteins, the proteins move to the outside of the cell in vesicles.

4 0
3 years ago
What is the most known plant or animal in your biome
lidiya [134]

Answer:

alligator

Explanation:

7 0
2 years ago
Dr. Albertson performed a lumbar laminectomy, 2 vertebral segments, for decompression on Grace James on September 15. One month
zvonat [6]

Answer:

The procedure is epidural drug administration.

Explanation:

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3 0
3 years ago
Which statement is not correct about the antibodies?
Marrrta [24]

Answer:

b. They are produced by memory B cells

Explanation:

The rapid cell division in activated B cells is followed by the differentiation of daughter cells into the plasma cells. The plasma cells are the precursor for antibodies and memory B cells. The antibodies kill the antigens while memory B cells are long-lived cells.  

Hence, antibodies are not produced by memory B cells but by plasma cells.

5 0
3 years ago
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