In humans, the placenta is essential to the embryo for RESPIRATION, NUTRITION AND EXCRETION.
The placenta refers to an organ in the uterus of pregnant mammals that is responsible for nourishing and maintaining the unborn baby through the umbilical cord. Th placenta has many functions but primarily it plays critical roles in the nutrition, respiration and excretion of the fetus. Its other functions include: production of hormones, production of immunity for the fetus for prevention from infections, etc. <span />
Answer:
Physical Pollution
Explanation:
Physical Pollution is the type of pollution which occurs when small particles of soil are suspended in water. The small soil particles do not mix with the water but are rather suspended thus reducing the amount of light energy availed to micro-organisms in the water.
Physical pollution is the type of pollution that is caused by color change, suspended solids, temperature conditions or radioactivity.
Answer:
D
Explanation:
Prokaryotic cells have no nucleus, eukaryotic cells do. A squirrel is eukaryotic, therefore it’s genetic material will be stored in the nucleus.
Answer:
Explanation:
64 and 15 and they add 43 and 25
The primary function of the active site of an enzyme is to catalyze the reaction associated with the enzyme (Option c). It is a fundamental structure in the enzyme.
<h3>What is the active site of an enzyme?</h3>
The active site of the enzyme is It is a fundamental structure in the enzyme that has catalytic activity.
The active site of the enzyme is a site that binds to the substrate to form the enzyme-substrate complex.
The formation of this complex leads to the generation of one or more products of a given chemical reaction.
Learn more about enzymes here:
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