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A number of mutations have been described in G proteins that have profound effects on their activity. For example, some mutations greatly increase the affinity of the G protein for GDP, making it very difficult for GDP to be exchanged for GTP. Other mutations prevent the hydrolysis of GTP to GDP. For each of the statements that describes a malfunction in cellular response, indicate the type of mutation that is responsible. ​ The MAP kinase pathway is continually activated, even in the absence of a signaling molecule. Which type of mutation could be responsible for this malfunction in cellular response?

See scenario in question 54 A mutation in the a subunit of the G protein prevents it from hydrolyzing bound GTP. The amount of cAMP in cells will:

Which answer is accurate with regards to the reaction in this diagram?

The protein derived from a particular gene is different when it is found in a neuron than in a muscle cell. This is most likely due to

Referring to the genetic code, which mRNA sequence would be translated in a test tube as a polypeptide consisting of alternating His and Thr.

One way of describing the biochemical reactions of cellular respiration is that the overall process represents the oxidation of substrate molecules to extract chemical potential energy. How does this compare to the overall process of photosynthesis?

Consider the events that describe the progress of a protein that will be secreted from the cell. 1. SRP (signal recognition particle) binds to the growing polypeptide chain and to the ribosome. 2. Translation resumes. 3. The ribosome and growing peptide move to the rough endoplasmic reticulum 4. Protein synthesis begins in the cytosol. 5. Translation pauses. ​ Which sequence of events correctly describes the progress of a protein that will be secreted from the cell?

Defects in cell signaling can lead to a cancerous cell as a result of:

A deletion that eliminates a three sequential nucleotides can:

If 8 alleles exist in a population, what is the maximum number of copies a normal individual is expected to have?