30 ) Which of the following statements about the Lac operon is false? A. The Lac operon only produces...

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Biology

**30 ) Which of the following statements about the Lacoperon isfalse?
A.
The Lac operon only produces RNA when lactose is presentand glucose is absent.
B.
The CAP activator can only bind DNA when it is bound tocAMP.
C.
The Lac repressor binds to the operator DNA when lactoseis not present in the cell.
D.
As soon as the CAP activator is bound to DNA, the Lacoperon will be transcribed.
40 Which of the following statements about thecytoskeleton isfalse?
A.
The cytoskeleton is important for cell division and DNAsegregation.
B.
The cytoskeleton is made up of three types of proteinfilament.
C.
The polymerization of protein monomers leads to theformation of cytoskeletal filaments.
D.
The intermediate filaments of the nuclear lamina arepresent in both plant and animal cells**
Help please both of them thanks

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30 the answer is A The lac operon produces RNA when lactose is present and glucose is absent A low level of LAC operon transcription does occur even when both lactose and glcose are present in the media of the bacteria It aint the case that the mRNA is produced onlt when lactose is present and glucose is absent Low level of transcription does happen even when both the sugars are present However very high transcription high mRNA amounts occurs when only lactose is presnt and glucose is absent from the media Looking at the other options The CAP activator can only bind DNA when it is bound to cAMP This is true the CAP protein Upon binding cAMP adenosine 3 5 monophosphate or cyclic AMP CAP binds to a conserved DNA sequence from which it can either activate or repress transcription initiation from various promoters In some cases clusters of several promoters are all controlled by a single cAMPCAP complex bound to the DNA The Lac See Answer

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	A.	The Lac operon only produces RNA when lactose is presentand glucose is absent.
	B.	The CAP activator can only bind DNA when it is bound tocAMP.
	C.	The Lac repressor binds to the operator DNA when lactoseis not present in the cell.
	D.	As soon as the CAP activator is bound to DNA, the Lacoperon will be transcribed.

	A.	The cytoskeleton is important for cell division and DNAsegregation.
	B.	The cytoskeleton is made up of three types of proteinfilament.
	C.	The polymerization of protein monomers leads to theformation of cytoskeletal filaments.
	D.	The intermediate filaments of the nuclear lamina arepresent in both plant and animal cells