Answer:
Explanation:
A plastid is an organel that is found in the cells of plants, algae, and some other eukaryotic organisms. There are three kind of plastids; chloroplast, chromoplast, and leucoplast.
Plastids contain pigments which is used in photosynthesis and the colour pigments that determine the colour of plant.
The crossing over mechanism of genetic variation results from the exchange of gene segments between non sister chromatids. The correct answer is A.
Answer:
If we removed the producers from this food web, how would it affect the balance of the ecosystem? A. There would be an increase in consumers and decomposers. ... There would be a decrease in primary consumers and an increase in secondary consumers.
Answer:
The answer is Norepinephrine.
Explanation:
Acetylcholine (Ach) and Norepinephrine (NE) are both chemical substances (neurotransmitters) released primarily by nerve cells and they affect different parts and systems of the body. Acetylcholine mostly targets the muscles and the brain and it is a part of the parasymphatetic nervous system whereas norepinephrine targets the whole body and has an effect that leads to the contraction of muscles and the increase of the heart rate. Norepinephrine is a part of the symphatetic nervous system.
Since the symphatetic nervous system is responsible for the crucial "fight-or-flight" response of our body, it has a more dramatic effect on the muscle contraction. Norepinephrine, being a part of the symphatetic nervous system, should result in a more drastic change in contractile force.
I hope this answer helps.
B. Excretory system. Think of it helping things to EXIT your body
