Part 1:
A solution that causes a cell to swell is a hypotonic solution.
In an isotonic solution, there is no change in the size of the cell.
All three cause osmosis.
A solution that causes a cell to shrink is a hypertonic solution.
Part 2:
1. H. Energy
2.D. Endocytosis
3.G. Diffusion
4.B. Exocytosis
5.E. Facilitated Diffusion
6.A. Osmosis
7.C. Active Transport
8.F. Passive Transport
Sorry. I don't know how to explain part 3 ,but I tried and failed so I deleted it. Part 1 and 2 are correct though.
Answer: A. true
Explanation: The phenotype is the physical characteristics of a person. So, if a person has brown eyes, which may be a characteristic that is dominant, then they would have a genotype of BB or Bb. The reason why Bb, heterozygous, is not a different color is because the recessive b does not affect the dominant B allele.
Hope this helps!!!
Answer:
b) opening calcium pores in the membrane
Explanation:
The opening of calcium ions channels facilitates the migration of vesicles containing neurotransmitters in the pre-synaptic neurons to the tip of the post-synaptic membrane. at the <u>neuromuscular junction </u>These neurotransmitters can either be <u>cholinergic or non-chorlinergic.</u> <u>At the tip of the pre-synaptic membranes the vesicles empty their neurotransmitter contents into the synapse.</u>
The neurotransmitters, diffuse through the neuromuscular junction to bind with the receptors on the <u>post-synaptic membrane on the post-synaptic neuron.</u> This stimulates opening of<u> ligand gated sodium ions,</u> and sodium ions diffuse into the post-synaptic neuronal membrane, to cause <u>depolarization</u>. if the stimulus is up to the threshold levels it generate action potential.
Therefore , more calcium ions channels opening produces; more diffusion of neurotransmitters;leading to opening of more sodium channels for depolarization; and IPSP or EPSP generation.
Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in. Unlike prokaryotes, eukaryotic cells also possess internal membranes that encase their organelles and control the exchange of essential cell components. Both types of membranes have a specialized structure that facilitates their gatekeeping function.
Cell division is important for many processes such as growth, the healing of wounds, cell repair and reproduction, etc., Not only is cell division play an important role for humans but even for parasites like paramecium. Paramecium use it as a source of reproduction, this action is called binary fission.
Hope this helped!
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