QUIZ QUESTIONS

Question 1

the region at the end of a chromosome that keeps chromosomes from sticking together and plays a role in aging

Answer 1

telomere

Question 2

long arm of a chromosome

Answer 2

q arm

Question 3

t or f: humans have 23 pairs of autosomes

Answer 3

false. humans have 22 homologous autosomal chromosome and 23rd pair is the sex chromosome.

Question 4

t or f: a human with monosomy has an extra chromosome

Answer 4

false. one less

Question 5

t or f: sex chromosome aneuploidy is more common than autosomal anueploidy

Answer 5

true

Question 6

t or f: nondisjunction can only happen during meiosis 1

Answer 6

false

Question 7

a chromosomal region has broken off and switched places with a region from a non-homologous chromosome

Answer 7

translocation

Question 8

Klinefelter syndrome

Answer 8

has 47 chromosomes and 2 X chromosome and one Y chromosome

Question 9

a chromosome with short and long arms of the same length is called

Answer 9

metacentric

Question 10

a karyotype can’t reveal

Answer 10

DNA sequence

Question 11

the possibility of a trisomy increases as

Answer 11

maternal age increases

Question 12

When Griffith injected only strain S into mice, he found that:

Answer 12

the mice died

Question 13

which of the following is not a nitrogenous base found in RNA?

Answer 13

thymine

Question 14

T or f: RNA is typically double stranded

Answer 14

false. single stranded. dna is double

Question 15

t or f: each species has a set genome size.

Answer 15

true

Question 16

what sugar does DNA contain?

Answer 16

deoxyribose

Question 17

DNA has a specific base pairing rule

Answer 17

adenine always pairs with thymine
cytosine always pairs with guanine

Question 18

which researcher(s) were the first to identify DNA as the transforming factor ?

Answer 18

Avery, MacLeod, and McCarty

Question 19

A region of DNA has the sequence: 5’ ATG TAC CGT 3’

What is the complementary sequence to this region?

Answer 19

3’ TAC ATG GCA 5’

Question 20

which researchers are the first to purify nuclein?

Answer 20

Miescher

Question 21

what of the following is not part of a nucleotide of DNA?

Answer 21

histone protein

Question 22

what is the three letter abbreviation of the amino acid that is coded for by the following mRNA codon: UUG

Answer 22

Leu

Question 23

what is the three letter abbreviation of the amino acid that is coded for by the following mRNA codon: AAC

Answer 23

Asn

Question 24

Put the following events of gene expression in order from first to last.

Answer 24

transcription, mRNA processing, translation

Question 25

translation takes place in the nucleus

Answer 25

false. in the cytoplasm.

Question 26

t or f: mutations can have an effect on the functionality of proteins

Answer 26

true

Question 27

t or f: nucleic acids are folded into proteins

Answer 27

false

Question 28

which amino acid is always the first one in a polypeptide ?

Answer 28

MET

Question 29

what mRNA sequence is transcribed from the following DNA sequence? 3’ GCT AGC CAA 5’

Answer 29

5’ CGA UCG GUU 3’

Question 30

during which stage of translation are peptide bonds formed between the new amino acids of growing polypeptide?

Answer 30

elongation

Question 31

during what stage of transcription does RNA polymerase bind to the promoter region of a gene?

Answer 31

initiation

Question 32

which of the following is not found in a mature mRNA molecule?

Answer 32

intron