I think it's Metabolism.
is right
B: adaption
C: acquired characteristics
D: tendency towards perfection
B) Osmosis requires cell energy while active transport does not.
C) Neither faciliated diffusion nor osmosis requires cell energy.
D) Diffusion of gases and other small molecules requires no energy on part of the cell.
Answer:
The correct answer would be option B.
Osmosis refers to the passive movement of water down the concentration gradient across a semi-permeable membrane. Thus, it does not require cell energy.
In contrast, active transport requires cell energy as it transports substances across the cell membrane against the concentration gradient, that is, from the region of low concentration to the region of high concentration.
It usually gets energy by ATP hydrolysis.
Examples may include sodium-potassium pump, GLUT transporters in intestinal cells et cetera.
For an organism to be considered as same species, it is important that their progeny can mate and produce viable offspring for generations. In this case, the mating of zebra and horse does not produce a fertile offspring, hence, their offspring cannot produce future generation, so, they cannot considered to be in same species.
Moreover, there are difference in the number of chromosome in between zebra and horse, and the zorse's number of chromosome is also different from the zebra and horse. In a species, the number of chromosomes must be same, so, this is also a factor, why they are not considered as a same species.
butterflies
birds
bees
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