Answer:
B
Explanation:
The folds contain ribosomes attached to the membrane. The more the folds the more the surface area to which more ribosomes can attach. The ribosomes are organelles responsible for the manufacture of protein in cells. Thereafter, the proteins are properly folded by the mediation of chaperones in the lumen of the RER.
Activation energy is the amount of energy required to begin a chemical reaction.
Answer:
b) opening calcium pores in the membrane
Explanation:
The opening of calcium ions channels facilitates the migration of vesicles containing neurotransmitters in the pre-synaptic neurons to the tip of the post-synaptic membrane. at the <u>neuromuscular junction </u>These neurotransmitters can either be <u>cholinergic or non-chorlinergic.</u> <u>At the tip of the pre-synaptic membranes the vesicles empty their neurotransmitter contents into the synapse.</u>
The neurotransmitters, diffuse through the neuromuscular junction to bind with the receptors on the <u>post-synaptic membrane on the post-synaptic neuron.</u> This stimulates opening of<u> ligand gated sodium ions,</u> and sodium ions diffuse into the post-synaptic neuronal membrane, to cause <u>depolarization</u>. if the stimulus is up to the threshold levels it generate action potential.
Therefore , more calcium ions channels opening produces; more diffusion of neurotransmitters;leading to opening of more sodium channels for depolarization; and IPSP or EPSP generation.
Mitpchondria, I hope I helped,Can I have brainliest!
• Skeletal and limb abnormalities
• Central nervous system alterations
• Heart defects
These are applicable in examples to many drugs that reach the developing fetus or embryo can cause death or congenital defects.
<h3>What is meant by congenital defects?</h3>
- A congenital anomaly is a morphological or functional abnormality that appears during intrauterine life.
- These illnesses, which are also known as birth defects, congenital disorders, or congenital abnormalities, arise during pregnancy and can be detected before or at birth as well as later in life.
<h3>What kinds of flaws are instances of congenital?</h3>
- Cleft lip and palate are typically discovered during standard prenatal screenings.
- congenital heart disease, which might include a hole in the heart, a valve issue, or a blood vessel issue.
- Usually identified in the first few years of life, cerebral palsy.
<h3>Each of the medications or drug classes listed below has the potential to give birth to abnormalities in an unborn child:</h3>
- ACE inhibitors (angiotensin converting enzyme).
- antagonist of angiotensin II.
- alcohol
- cocaine
- isotretinoin (an acne medication) (an acne drug)
- high vitamin A dosages.
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