Answer:
diffusion through a selectively permeable membrane
Explanation:
The cell membrane selectively allows certain substances to enter or leave a cell . This implies that cell membranes are selectively permeable; they allow some substances to pass through, but not others.
Direct transport of materials across the cell membrane is often passive. Passive transport does not require energy to occur. Passive transport is the movement of substances from a region of higher concentration to a region of lower concentration. A concentration gradient is always required.
The diffusion through a selectively permeable membrane is an example of passive transport.
The iodine moves into the dialysis tube across the semi permeable cell membrane from a region of higher concentration to a region of lower concentration in response to a concentration gradient.
The correct answer is If spiders evolved first, six legs is the derived trait.
The teacher says that the insects have six legs and the spiders have 8 legs, but the spiders derived this trait and evolved prior than the insects.
The student thinks that the teacher is wrong because he thinks, of the spiders evolved first, the the insects must have derived the 6 leg trait later in the evolutionary history. hence, the 6 leg trait should be derived trait, not the 8 leg trait.
Answer:
A,B,C,D
Explanation:
Since one parent is CC, there is no way to get cc as an outcome from this cross. However, there is also no way that all of the offspring will be CcDd, which is heterozygous for both traits. Therefore, this is the only answer choice that is incorrect.
Answer:
1) Different
2) Different
3) The same
4) The same
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