Question

Question 4
Restriction enzymes:
weld together fragments of DNA
attach to DNA molecules at specific sites and cut both strands of DNA at that place
only cut RNA molecules at specific sites and cut both strands of DNA at that place
are chemical machines that make parts of the cell membrane



Question 5
DNA ligase:
links together the "sticky ends" of cut DNA segments
attaches to DNA molecules at specific sites and cut both strands of DNA at that place
only cuts RNA molecules at specific sites and cuts both strands of DNA at that place

Answer 1

is a chemical machine that makes parts of the cell membrane



Question 6
Self-replicating DNA fragments found in bacterial cells are called:
alleles
anthers
bacteriophages
plasmids

Answer 2

Question 7
Viral vectors are:
enzymes that cut DNA at specific sequences
DNA molecules used to carry foreign DNA fragments into bacteria or other cells
RNA molecules that can be joined with DNA fragments that are to be cloned
large eukaryotic chromosomes

Answer 3

it's number 4 it's B

Answer 4

Question 8
Polymerase chain reaction (PCR):
is a relatively simple and is a fast way of copying very small amounts of DNA
was developed during the 1980s
resulted in its discoverer sharing a Nobel Prize
all of these

Answer 5

Question 9
The current estimate of the number of genes in the human genome is:
1000
24,000
100,000
50,000

Answer 6

that are all of them for now ^^

Answer 7

you know what I know you test I took it

Answer 8

1 true
2 false
3 A. gel electrophoresis
4 attach to DNA molecules at specific sites and cut both strands of DNA at that place
5 links together the "sticky ends" of cut DNA segments
6 plasmids
7 DNA molecules used to carry foreign DNA fragments into bacteria or other cells
8 All of these
9 24,000

Answer 9

thanks :DD U in keystone?

Answer 10

thats all answers

Answer 11

yup

Answer 12

don't forget to give me and up

Answer 13

U took the Unit exam already?

Answer 14

yup

Answer 15

can U give me the answers too please, I'll give U medals

Answer 16

what grade you in

Answer 17

9

Answer 18

me too

Answer 19

I can help you but my time is like candy

Answer 20

okay :DD just post the answers and I'll put them in ^^

Answer 21

post like the your test

Answer 22

close this one and make a new one

Answer 23

every question seperate? so get alot of medals?

Answer 24

yup

Answer 25

okay

Answer 26

now type the QA it's asking you to do for me

Answer 27

copy and past it in

Answer 28

what is a QA? Question?

Answer 29

question

Answer 30

post the question

Answer 31

I have a new one

Answer 32

it is there already

Answer 33

ok?

Answer 34

You guys are in keystone?