Answer:
Option D, aortic valve
Explanation:
The location of aortic valve i.e between the aorta and left ventricle, allows it to stop the blood from flowing back into the left ventricle.
The other options are incorrect as -
Pulmonary valve being located between the pulmonary artery and right ventricle, stop the blood from flowing back into the right ventricle.
The tricuspid valve and mitral valve stops the blood from flowing back into the right atria and left atria respectively.
Hence, option D is correct.
Answer:
i belive that that would be called neurotransmitters
Answer:
The characteristic that is not a function of the receptors is to receive glucose molecules.
Explanation:
The receptors are structures made up of proteins or glycoproteins whose function is to <u>receive specific signals</u>, which determine intracellular changes and promote an effect or action.
Most of the receptors are located on the surface of the cells, serve for cell recognition and are capable of receiving stimuli from neurotransmitters and hormones.
Glucose is a biomolecule that does not constitute a stimulus or possess a specific receptor and enters the cell with the use of a specific transporter.
Both being forms of reproduction posses some characteristic advantages.
<span>> Asexual reproduction is an easy way to produce more clones (group of clones refereed as rummest). So at the time of calamity asexual reproduction ensures that more and more individuals of same generations are produced overtime with same genetic content and is helpful in survival of any species. Example : E.coli reproduces every 20 minutes through asexual reproduction. </span>
<span>> Sexual reproduction is a way to ensure variability in an organism. It generates variation in the offspring through crossing over and recombination that makes the progeny more suitable to the environmental features and thus is effective means for survival.</span>
Strong collagenous fibers, known as Sharpey’s fibers, connect the periosteum to the bone surface. This fiber extends to the bone’s circumferential (outer part) and interstitial lamellae (inner). It’s specifically made up of a fibrous layer (outside) and a cambium layer (inside).
