B. semi-permeable
meaning: it is only partly permeable, not all substances can pass through the membrane.
The answer to this question is true .
Answer:
in male lion, two methyl groups are present in its structure while in female lion, two hydroxl groups are present in its structure
Explanation:
The chemical structure of the carbon atom is different in both male and female lion because both male and female lions have different sex harmones which are totally different from one another. In male lion, testosterone is a sex hormone whose chemical formula is C19H28O2 and two methyl groups and one hydroxl group are present in its structure while in female lion, oestradiol is a sex hormone having a chemical formula C18H24O2 and two hydroxyl groups are present.
Answer:
B) cAMP
Explanation:
Phosphodiesterase is an enzyme that breaks a phosphodiester bond, for example in molecules such as cAMP and cGMP. So, phosphodiestarases are are regulators of signal transduction: regulate the duration of signaling pathway.
Caffeine is central-nervous-system stimulant and the mechanisms of its action usually are: mobilization of intracellular calcium or inhibition of specific phosphodiesterases.
Answer:
your answer is tape worm i know this because tapeworms take over inside of a host and its body is smooth and soft.
Explanation:
