Answer:
Because a drug acts on one type of receptor does not mean that it will act on another type.
Explanation:
As humans, we have receptors for two kinds of beta adrenergic compounds such as catecholamines. Cardiac muscle cells have beta 1 receptors that promote increased heart rate. Some drugs that slow heart rate are called beta blockers. Smooth muscle cells, however, have beta 2 receptors which mediate muscle relaxation. Blockers of these effects are sometimes used to treat asthma. The use of beta 2 antagonist drugs may be useful in asthma because a drug acts on one type of receptor does not mean that it will act on another type.
False
Sperm receptor is also known
as zona pellucida sperm –binding protein 3 (ZP-3). It is a ZP module protein in human
that encode by the ZP3 gene. Thus, ZP3 is the receptor that is found in the
zona pellucida that binds the sperm at the <span>beginning</span><span> of fertilization.</span>
Step 1: Imbibition water fills the seed.
Step 2: The water activates enzymes that begin the plant's growth.
Step 3: The seed grows a root to access water underground.
Step 4: The seed grows shoots that grow towards the sun.
Step 5: The shoots grow leaves and begin photmorphogenesis.
I don't know if you know but there is no diagram
