Pre-class study (8 points) Name Noga sha (print) 1. All G proteins associate wit

Question

Pre-class study (8 points) Name Noga sha (print) 1. All G proteins associate with G protein-coupled receptors. Tin T2. All G protein-coupled receptors associate with G proteins T/F? 3. Sister chromatids are separated during: A. mitosis. meiosis I and mitosis. meiosis II and mitosis. D. meiosis L E. meiosis II. 4. Homologue chromosome are separated during: A. mitosis. B. meiosis I and mitosis. C. meiosis II and mitosis. D. meiosis I. eiosis II. Questions #5-16 are linked together. A student was studying cell growth using cells grown in laboratory cultures. The cultures were synchronized so that all of the cells passed through the same stage of the cell cycle at the same time. The cells were examined during five different periods of time, intervals (A-E). The amount of DNA present per cell was determined for each interval. The graph shows the result of this study Lu siz time

Explanation / Answer

Answer 1-

The statement is false, G proteins can activate through two pathways. One is G protein coupled receptors and the second is Cyclic AMP pathway.

Answere2-

This statement is true. G protein coupled receptors are specifically for G proteins, to activate them through GTP hydrolysis.

Answer 3-

The third option is correct. The meiosis II is similar to mitosis, where both get separation of sister chromatids in metaphase.

Answer 4-

The option 4th is correct. In meiosis I the anaphase makes the homologous chromosomes to separate. Mitosis does not contain this phenomenon.

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