Answer:
B
Explanation:
The experimental drug has a direct effect on the dependent variable which is the presence of the headache.
D) It enlarges continental landmasses and forms mountains along the edges of continents.
<em>Hope this helps!</em>
The best answer is A.
As soon as the blood vessel wall is broken or damaged, a series of reactions activate platelets so that they stick to the site of injury. The platelets are able to hold to the blood vessel wall by means of a protein substance called von Willebrand's factor.
Collagen and thrombin then act at the site of injury and induce platelets to clump or stick together, forming a mesh that plugs the broken part. Special clotting protein help sequester more platelets to the plug which finally becomes a blood clot.
the chemical equation is respiration.
C6H1206 + 6O2 = 6CO2 + 6H20 + Energy
Aerobic Respiration takes place in the mitochondria and requires oxygen, glucose and produces carbon dioxide, water and energy.
Answer:
A. ATP
Explanation:
The Cyclic electron flow in the chloroplast includes only PSI and does not produce NADPH and oxygen gas. The process produces the only ATP.
During cyclic electron flow, electrons are transferred from the P700 reaction center to the ferredoxin and back to the PSI via cytochrome b6f and plastocyanin.
Since the electrons are not passed to the NADP+, NADPH is not produced. The proton gradient generated during this electron transfer drives ATP synthesis.
