Answer: d. on the plasma membrane
Explanation: Prokaryotic cells also synthesis ATP the limitations is that enzymes required for the synthesis of ATP are attached to the cell membrane which surrounds the cell. ATP synthesis complex of prokaryotic cells are embedded in the cell membrane. Prokaryotes lack mitochondrial/thylakoid membrane so therefore, ATP is produced on their cell surface membrane.
Answer: E. rate = k [alkyl halide]
Explanation:
Rate of SN1 reaction depends only on substrate as it is unimolecular substitution reaction.
The experiment by Peter Agre who discovered the protein Aquaporin demonstrated the function of proteins that allow facilitated diffusion of water.
Explanation:
Aquaporins are water channel proteins that facilitated diffusion of water. Agre was able to prove its function when a frog’s oocytes showed increased water permeability when an unknown protein (membranous) from the RBCs was introduced into them. The oocytes without proteins did not facilitate water diffusion.
Aquaporins are membranous proteins that belong to larger intrinsic proteins but act as pores on the cellular membranes to facilitate water diffusion.
I think the answer this question is looking for is 'aquifer', but the definition given is not completely correct. Rather than a body of water stored underground, groundwater is often stored in a<span> layer of </span>permeable rock, rock fractures or unconsolidated materials, such as gravel<span>, </span>sand<span>, or </span><span>silt. So the reference to a 'body' of water is misleading, as it give the impression that groundwater occurs as underground lakes or rivers. Although this can sometimes be the case, groundwater often exists in between small spaces in the underlying geology.</span>
Answer:
The answer is d
Explanation:
keratin is a protein molecule that is found in hair follicles fingernails and in some skin cells.
