Question

Please give me a complete solutions, don't work on it if you're not going to finished this. This is an old homework, in which I am using to study for the exam. So please don't give me half ass answers.

QUESTION 11

If a DNA segment has the sequence GCTAA, what RNA sequence will be made from it?

	a.	CGATT
	b.	CGUTT
	c.	CGAUU
	d.	GCTAA
	e.	UGATT

1 points   

QUESTION 12

Which of the following brings amino acids to the ribosomes?

	a.	DNA
	b.	ribosomal RNA (rRNA)
	c.	transfer RNA (tRNA)
	d.	messenger RNA (mRNA)
	e.	proteins

1 points   

QUESTION 13

What is the product of transcription?

	a.	mRNA
	b.	DNA
	c.	ribosomes
	d.	proteins
	e.	amino acids

1 points   

QUESTION 14

What distinguishes one amino acid from another?

	a.	The presence of an amino group.
	b.	The presence of a variable side group.
	c.	The presence of a carboxyl group.
	d.	The presence of a hydrogen atom.
	e.	The presence of a carbon.

1 points   

QUESTION 15

How many amino acids are responsible for producing all the various types of proteins?

	a.	20
	b.	50
	c.	10
	d.	2
	e.	4

1 points   

QUESTION 16

What are the products of translation?

	a.	ribosomes
	b.	DNA
	c.	nucleotides
	d.	RNA
	e.	proteins

1 points   

QUESTION 17

Proteins differ from one another because ...

	a.	of the base (A, C, T, or G) attached to it.
	b.	the sequence of amino acids in the chain differs from protein to protein.
	c.	the number of nucleotides found in each protein varies from molecule to molecule.
	d.	the bonds linking amino acids differ from protein to protein.

1 points   

QUESTION 18

What is the function of rRNA (ribosomes) in protein synthesis?

	a.	They provide a site for transfer RNAs to link to messenger RNAs.
	b.	They carry the proteins to their site of action.
	c.	They provide a source of amino acids.
	d.	They transcribe the basic DNA code.

1 points   

QUESTION 19

How does DNA differ from RNA?

	a.	DNA has the bases A, T, C, and G; RNA has the bases A, U, C, and G.
	b.	DNA has deoxyribose sugar; RNA has ribose sugar.
	c.	DNA is a double-stranded molecule; RNA is a single-stranded molecule.
	d.	DNA is longer than RNA.
	e.	All of the above are correct.

Answer 1

QUESTION 11 c. CGAUU as Thymine is replaced by Uracil in RNA.

QUESTION 12.c.transfer RNA (tRNA). as the name itself suggests the function of tRNA is to transfer aminoacids to the ribosomes during protein synthesis.

QUESTION 13 a.mRNA Transcription refers to the synthesis of RNA from DNA.

QUESTION 14 b.The presence of a variable side group. The "R" functional group is known as the amino acid "side chain" which distinguishes one amino acid from another .

QUESTION 15 a .20 amino acids are responsible for producing all the various types of proteins.

QUESTION 16 e.proteins are the products of translation.

QUESTION 17 b.the sequence of amino acids in the chain differs from protein to protein.

QUESTION 18.c.They provide a source of amino acids.

QUESTION 19 e.All of the above are correct.