DNA is the correct answer but next time put answer choices so that people can better answer your questions. Thanks!
Answer:
A. Each organism had a different parent that passed on a set of unique genetic instructions.
Explanation:
Organisms can either be single-celled or multicellular. According to this question, a student collects a sample of water from a pond near her home. She then examines a drop of the water under a microscope and noticed it contains four very differently shaped single-celled organisms.
The single-celled organisms are of different shapes because they are from different parents, which passed on a set of unique genetic instructions via their genes to them. Organisms of the same species from the same parent will possess the same shape because they contain same gene which makes them look and behave similar.
However, in this case, the four different shaped single-celled organisms are of DIFFERENT SPECIES and hence, contain individual unique genes that makes them so
NADPH builds up in the STROMA of the chloroplasts during electron transport. In chloroplasts, NADP+ is reduced by the ferredoxin-NADP+ reductase.
Nicotinamide adenine dinucleotide phosphate (NADPH) is the reduced electron form of NADP+.
The NADPH coenzyme is generated during the last step of the electron transport chain of the light-dependent reactions of photosynthesis.
NADPH is used by plant cells as an electron donor in different reactions associated with dehydrogenase and reductase enzymes.
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