Q DNA replication
Antiparallel strands
One copy of a DNA molecule will replicate itself to make two identical copies of the molecule.
Ab
1. The DNA molecule "un-zips" with the help of a protein, called Helicase. Helicase breaks the hydrogen bonds.

2. Complementary base
?
occurs. Nucleotides move into position to bond with the existing DNA single
strands.
A.
ce
is
3. The protein, polymerases checks for mistakes and joins the deoxyribose
of
and phosphates in the backbone of the new strands.
Mutations
ht
Mutations can occur naturally or
a
1.
occurring mutations occur by
a) nitrogen base
b) nitrogen base
c) nitrogen base
Any of these mutations change the entire amino acid
of the protein, so
of protein are altered. This can lead to serious consequences.
D
and
W
2. Environmental mutations
a) caused by
> V)

PLEASE HELP ILL BRAINLIEST YOU PLEASE

Q

DNA replication

Antiparallel strands

One copy of a DNA molecule will replicate itself to make two identical copies of the molecule.

Ab

1. The DNA molecule "un-zips" with the help of a protein, called Helicase. Helicase breaks the hydrogen bonds.

2. Complementary base

?

occurs. Nucleotides move into position to bond with the existing DNA single

strands.

A.

ce

is

3. The protein, polymerases checks for mistakes and joins the deoxyribose

of

and phosphates in the backbone of the new strands.

Mutations

ht

Mutations can occur naturally or

a

1.

occurring mutations occur by

a) nitrogen base

b) nitrogen base

c) nitrogen base

Any of these mutations change the entire amino acid

of the protein, so

of protein are altered. This can lead to serious consequences.

D

and

W

2. Environmental mutations

a) caused by

> V)

PLEASE HELP ILL BRAINLIEST YOU PLEASE

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c