Are the following statements true or false? 1. Rubisco has been around since the

Question

Are the following statements true or false?

1. Rubisco has been around since the atmospheric oxygen levels were very high.

2. The main prose of the “Calvin Cycle” is to produce highly oxidized 3-carbon sugar molecules.

3. The hydrophobic nature of phospholipids is responsible for spontaneous bilayer formation, making phospholipids ideal for their structural and functional role as cell membranes.

4. All living cells maintain a potential (relative difference in overall – or + charge) across their membranes.

5. Electro-negativity describes how strongly a nucleus will attract electrons. The nucleus which is the highest in this character will attract electrons more strongly and create a polar covalent bond.

6. Chemical gated channels (in contrast to voltage gated channels) respond to signal molecules and neurotransmitters by opening ion channels and permitting ions to enter or leave the cells.

7. Receptor-mediated endocytosis is a mechanism whereby only specifically selected materials are brought into the cell via clathrin-mediated process.

8. Brownian ratchet is a type of a biased diffusion.

9. G proteins can “self-inactivate” by hydrolyzing the bound ATP.

10. Protein kinase A makes cAMP

Explanation / Answer

1. RUBISCO Day time CO2 fixation enzyme and very slow enzyme able to 3-10 carbon dioxide molecule per second. If increasing CO2 concentration in atmosphere enzyme activity will increase so, Answer is FALSE.

2. The main prose of Calvin Cycle is produce highly oxidized #-carbon sugar molecule is True.

3. True. because of their structural and functonal role in formation of cell membrane.

4. True. That is necessory to maintain some charge for electron transport and sgnal tansduction.

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