Question

Plasmids
can be used to cut DNA
can be used to insert DNA into bacteria
can be used to digest proteins
A and C
All of the above
Plasmids
can be used to cut DNA
can be used to insert DNA into bacteria
can be used to digest proteins
A and C
All of the above
@Biology

Answer 1

B

Answer 2

Name the technique used to increase a quantity of DNA.
plastid technology
genetic engineering
PCR
RNA
Recombinant DNA technology

Answer 3

PCR

Answer 4

What tool does one use to separate DNA fragments?
an electron microscope
a cyclotron
a mass spectrograph
a Polyacrylamide gel
a centrifuge (high speed)

Answer 5

a polyacrylamide gel

Answer 6

DNA fragments have
RNA tails
RNA heads
a net negative charge
a net positive charge
combined with RNA

Answer 7

A negative charge

Answer 8

DNA fragments have
RNA tails
RNA heads
a net negative charge
a net positive charge
combined with RNA

Answer 9

thanks you have time to answer some more questions ?

Answer 10

sure a couple more

Answer 11

do you want me to put the whole question list in one message or ask you one by one ?
there are five questions only

Answer 12

Just put all the five down, that's fine

Answer 13

What evolves?
an individual
a species
a population
a genus
everything

2. What defines species?
a biology text
reproductive incompatibility (or compatibility) in nature
someone with a Ph.D. in Biology
physical appearance (similarity and dissimilarity)
nothing (it is never defined)

3. What is the source of new alleles?
mutation
recombination
sexual reproduction
gametes
nothing (there are no new alleles)

4. Which (is an/are) intrinsic isolating mechanisms?
behavioral isolation
mechanical isolation
hybrid infertility
ecological isolation
all of the above

5. Microevolution refers to:
change in the allele frequency within a population
change in the gamete frequency within a population
change in chromosome number within a population
the creation of a new species
the creation of two new species

Answer 14

1.) Populations evolve.
2.) Reproductive incompatibility in nature. That's why a mule, which is the offspring of a horse and a donkey, is not a species as it is not able to reproduce and create it's own offspring.
3.) Mutation is a source of new alleles.
4.) Not too sure about question 4, sorry.
5.) Change in allele frequency within a population.

Can anyone else verify?

Answer 15

are you not sure about number 4 only ?

Answer 16

yep.

Answer 17

ok let me ask it in the group
but thanks a llot man. hope i dont fail the quiz

Answer 18

Sorry if I had to guess though I would say all of the above. The reason I'm uncertain is because I'm a bit unsure of what is meant by "intrinsic".

Answer 19

hey I have a qquestion about this site. Is there any way i can contact you or any other person if i become there fan ?