Which of the following does NOT cause cancer?
A. Too much cell division
B. Viruses
C. Inherited genes
D. Gene mutations
E. All of the above cause cancer
Answer: E. All of the above cause cancer
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Which of the following statements regarding Fas-mediated programmed cell death is false?
A) Fas ligand binding with Fas receptor stimulates a specific G protein. B) Fas ligand and receptor interaction results in the recruitment of adaptor proteins in the target cell. C) Capases are activated in the process. D) The caspase cascade results in the cleavage of the proteins within the target cell. E) It ultimately results in death of the cell.
A cow converts the energy of glucose into the energy of ATP. What happens to most of the energy in that conversion?
a. It remains with the glucose – it can’t be extracted. b. It is lost as heat energy. c. It is within the ATP molecule. d. It is recycled back into glucose. e. It is utilized in other metabolic pathways.
Hemoglobin is a protein composed of two pairs of polypeptide chains. What is the highest level of protein structure, represented by hemoglobin?
a) tertiary b) secondary c) primary d) quaternary
When plants are grown in hydroponic culture, their roots are suspended in an aerated solution. Why is the solution aerated? Check all that apply.
A. Without oxygen, the xylem would stop flowing. B. Both the light-dependent and the light-independent reactions of photosynthesis require oxygen. C. Oxygen is necessary for the root cells to produce ATP. D. Without oxygen, membrane transport in the roots would be impaired. E. A lack of oxygen would cause the water potential within the roots to decrease.