List 3 differences between plant and animal cells.


Answer:
1. Plants have cell wall,
2. chloroplasts,
3. and central vacuole

Biology & Microbiology

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Membrane proteins are not very soluble in water, because they possess long stretches of non-polar amino acids that are

A. too long to interact with the water molecules. B. hydrophobic. C. are transmembranal. D. hydrophilic. E. used as transport channels.

Biology & Microbiology

How do scientists use the term theory?

A) as a hypothesis that has not yet been tested B) as a hypothesis that seems logical but cannot be tested because it's impractical to do so C) as a set of findings that are supported by repeated testing D) as ideas which are so obviously true that testing is not required

Biology & Microbiology

What is necessary in order for organisms to change over generations?

What will be an ideal response?

Biology & Microbiology

Glycophorin is a heavily glycosylated protein found on the red cell membrane. One or more of the statements in the following list may apply to this protein:

(i) It is a Type I membrane protein (ii) It is a Type II membrane protein (iii) It is a Type III membrane protein (iv) The carbohydrate composition of the protein gives the red cell a hydrophilic surface which allows them to circulate without 'sticking' to other cells or vessel walls. (v) The carbohydrate composition of the protein gives the red cell a hydrophobic surface which allows them to circulate without 'sticking' to other cells or vessel walls. (vi) The carbohydrate composition of the protein gives the red cell a surface which allows them to specifically 'stick' to the vessel walls so they can deliver oxygen to respiring tissues.

Biology & Microbiology