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

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.