1. Eukrayotes cells contain membrane-bound organelles, such as the nucleus, while prokaryotes cells do not.
2. Eukaryotes are often multicellular whilst prokaryotes are unicellular. Although there are some exceptions –unicellular eukaryotes include amoebas, paramecium, yeast.
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The right answer is <span>A) semi-permeable membrane
<span>A semi-permeable membrane is a membrane permeable to a liquid (solvent) and impermeable (or poorly permeable) to substances dissolved in the liquid (solute).
</span>The tubule of a kidney consists of a semi-permeable membrane and has also specific transporters which allow absorption and reabsorption. These "tools" allows some substances like ions to be absorbed/reabsorbed (by the transporters), without any changes in the concentration of the other substances (because both the membrane and the transporters stopped them).</span>
Answer: Helicase
Explanation: Replication is a process of making two identical copies of DNA from a double-stranded DNA. This process is catalyzed by an enzyme called DNA polymerase. Before DNA polymerase begins the synthesis of the new strands, helicase will unwind or unzip the double-stranded DNA. Helicase is the enzyme that unzips or unwinds the double-stranded DNA helix during replication. Helicase separates the two strands by moving along the DNA using chemical energy from ATP. The separated strands serve as templates for the synthesis of new DNA strand.
Answer:
The most correct option is the first option
Explanation:
A deer is an herbivorous animal that is usually preyed upon by many wild carnivorous animals like lions, tigers and leopards. Hence, when the population of these wild predatory carnivorous animals reduce, the population of the deer would increase because fewer of them would them would be killed by predators despite them (the deers) reproducing.
Note that a predator is an animal that feeds upon another animal (referred to as prey) of lower "strength".
Answer: Singing , as whistleing does not even involve your larynx
Explanation:
