Crossword CPA #11

Question 1

groups of nucleosomes that can be tightly or loosley packed together

Answer 1

chromatin fibers

Question 2

enzyme that binds DNA pieces to form two continuous, complementary DNA strands

Answer 2

DNA ligase

Question 3

number of nucleotides contained in the DNA or RNA segment

Answer 3

base pairs

Question 4

okazaki fragments

Answer 4

new fragments of dna on the lagging strand

Question 5

genome

Answer 5

all of the genes and nucleotides that connect them in the organism

Question 6

genes

Answer 6

nucleotides that code for RNA proteins

Question 7

exon

Answer 7

coding sequence of mRNA that is kept

Question 8

replication fork

Answer 8

two of these form in either direction during DNA replication

Question 9

RNA primer

Answer 9

short RNA sequence needed to start DNA replication on a strand

Question 10

semiconservative

Answer 10

method of DNA replication; involves using one whole strand to make whole complementary new strand

Question 11

primase

Answer 11

enzyme that makes RNA primers

Question 12

euchromatin

Answer 12

loosely packed nucleosomes; genes in this area are considered to be highly active

Question 13

polyadenylation

Answer 13

modification to 3’ ed of eukaryotic mRNA prior to translation; involves adding several adenine nucleotides to the end

Question 14

terminator

Answer 14

DNA nucleotide sequence that tells RNA pol. where to stop transcribing

Question 15

adenine

Answer 15

pairs with thymine (DNA) and uracil (RNA) with 2 hydrogen bonds

Question 16

DNA helicase

Answer 16

enzyme that breaks the hydrogen bonds between the 2 strands of DNA that will be replicated

Question 17

splicing

Answer 17

removal of introns from mRNA prior to translation

Question 18

fertility

Answer 18

type of plasmid; carries instructions for conjugation

Question 19

promotor

Answer 19

DNA nucleotide sequence that tells RNA pol. where to begin transcribing

Question 20

guanine

Answer 20

pairs with cytosine with 3 hydrogen bonds

Question 21

transcription

Answer 21

process of using DNA to make RNA

Question 22

capping

Answer 22

modification to 5’ end of eukaryotic mRNA prior to translation

Question 23

resistance

Answer 23

type of plasmid; allows bacterium to transfer to other bacteria the ability to survive antimicrobial drugs

Question 24

heterochromatin

Answer 24

tightly packed nucleosomes; genes in this area are considered to be inactive

Question 25

three prime

Answer 25

end of dna or rna strand

Question 26

intron

Answer 26

noncoding sequence of mRNA that is removed

Question 27

plasmid

Answer 27

circular DNA

Question 28

leading strand

Answer 28

5’ to 3’ strand; synthesized continuously

Question 29

DNA polymerase

Answer 29

enzyme that adds DNA nucleotides to the 3’ end of new DNA strands

Question 30

five prime

Answer 30

the beginning of DNA or RNA strand

Question 31

histones

Answer 31

proteins that DNA wraps around to form nucleosomes