Hi!
I think the word is lungs, so the answer would be:
In the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the
lungs.
This is because the right ventricle pumps the blood to the lungs through the pulmonary valve.
Hope this helps! Best of luck!
I’m pretty sure it’s the left ventricle but if not then choose another answer
It’s B because these both lie in a few additional structures found in plant cells, these include Chloroplasts, the cell wall, and vacuoles
The use of stem cells is without any objections since it can be used in therapies to help humans.
The Lock-and-key mechanism was first proposed by Emil Fischer which described as the enzymatic reactions whereby an enzyme with a single substrate binds temporarily to form a substrate complex.
The lock-and-key mechanism is usually associated with the complementary shapes of an enzyme with a single substrate, wherein the lock that is being referred to is the enzyme and the substrate is the key. One right sized substrate (key) fits into the active site (key hole) of the enzyme (lock).
The active site which is mentioned above is structurally complementary to the substrate. This is the temporary binding site on the enzymes. Just like a lock and key, the enzyme as the lock and the substrate as the key is said to fit together.