Explanation:
Cell membranes are selectively permeable. Some solutes cross the membrane freely, some cross with assistance, and others do not cross at all. A few lipophilic substances move freely across the cell membrane by passive diffusion. ... Large molecules do not cross intact cell membranes, except in certain special cases.
Answer:
Protein
Explanation:
- The protein-covered coat that surrounds the genetic material of a virus is called a capsid.
- There are mainly three structural shapes of a capsid :
- Icosahedral
- Prolate
- Helical
- The functions of capsid includes:
- Protection of viral genome i.e., either DNA or RNA from dissolution.
- Helps in penetration of virus in host cells.
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Answer:
it moves when carbon moves from fossil fuels to the atmosphere when fuels are burned when humans burn fossil fuels to power things and then most of the carbon quickly enter the atmosphere as carbon dioxide gas.
Explanation:
it’s somehow re-jiggered its
taste system so that the attractant that humans used to draw the insect to
poison bait—the sugar glucose—now tastes bitter to the roach, and they avoid it.
cockroaches began appearing that avoided the baits, and did so not because they
were averse to the poison, but because they were averse to the attractant, glucose. This new
trait turned out to be heritable, that is, it had a genetic basis.