Answer:
B. 20%
Explanation:
The complementary base-pairing rule states that Adenine always pairs with Thymine (A with T), and Cytosine with Guanine (C with G).
Because of this, the amount of Adenine present must be the same as the amount of Thymine present, and the same for Cytosine and Guanine.
This means that if there is 30% Adenine, there is also 30% Thymine as each A base is paired to a T base. This adds to 60%, so Cytosine amounts and Guanine amounts must add to 40% to make 100%.
Since they are equal in amount, there must be 20% of each.
Therefore the answer is B. 20%
There is 30% Adenine, 30% Thymine, 20% Guanine and 20% Cytosine.
Hope this helped!
The SYMPATHETIC nervous system prepares the body to expend energy whereas the PARASYMPATHETIC nervous system allows the body to restore and conserve energy
Answer:
secrete a cytokine that triggers apoptosis
Explanation:
Cytotoxic T cells secrete granzymes and perforins when targeting cells. Additionally they secrete cytokines such as IFN-, TNF-α and TNF-β that act to activate macrophages and help kill infected cells.
Answer alpine
Explanation: ive done this many a times
Answer:
<em>A seedling is a small plant with few leaves that is vulnerable to the elements. Eventually the seedling changes into a young adult plant. At this stage, the plant is bigger and may have more leaves. Thin branches will develop on young adult trees.</em>
Explanation:
<em>Hope</em><em> It</em><em> Help</em>
