Answer:
If a DNA strand has the base sequence TTCCGGAA the complementary strand has the sequence AAGGCCTT.
Explanation:
A DNA molecule is constructed from sequences of its four nitrogenous bases: adenine, thymine, guanine and cytosine. Since DNA is made up of two strands, the sequence of nitrogenous bases of one strand is complementary to the other
.
The complementarity of the bases is a characteristic of the nitrogenous bases in the nucleic acids to combine with their complementary base, which is the same as saying that purines complement with pyramidines.
- <em>Adenine is combined with Thymine A=T
</em>
- <em>Cytosine is complemented with Guanina C≡G
</em>
In this way, given a sequence on a DNA strand
:
<em> T-T-C-C-G-G-A-A</em>
The complementary strand will have this sequence:
<em> A-A-G-G-C-C-T-T</em>
Answer:
Diffusion
Explanation:
Diffusion is the process whereby molecules move from an area of high to low concentration
Answer;
This is because greenhouse gases prevent heat which is received from the sun from being radiated out into space.
Explanation;
Green house gases are gases that are emitted into the environment that are capable of absorbing infrared radiation, and thus trapping and holding heat in the atmosphere. The increase of heat in the atmosphere contributes to higher temperatures and causes the greenhouse effect, which results to global warming. Examples of these gases include, carbon dioxide, methane, nitrous oxide, ozone and CFCs among others.
Answer:
2 is d or a
3 is e
4 is d
I am sorry but I do not know number 1
Explanation:
How hard the blood pushes on the inside of the blood vessels is called? BLOOD PRESSURE
The total amount of blood the heart pumps in one minute is called ?
CARDIAC OUTPUT
When blood vessels open wider during exercise, they are said to ?
DILATE
How many times your heart beats in one minute is called ?
HEART RATE
The force that can put unhealthy tension on the heart as it is pumping is called ?
BLOOD PRESSURE
The amount of blood the heart pumps out in one beat is called?
STROKE VOLUME
