Reference no: EM132725153
1. The inheritance pattern where two or more genes do not assort independently because they are close together on the same chromosome is called
A. Mendelian inheritance
B. epistasis
C. genomic imprinting
D. linkage
2. Consider a secreted protein as it is first being synthesized. When the first 20 amino acids of the protein have made, where would one find the ribosome that is translating this protein?
A. Bound to the endoplasmic reticulum (thus, rough ER)
B. Bound to the golgi
C. In the cytoplasm
D. In the nucleus
3. What happens when NADH loses an H atom (becomes NAD+)?
A. It yields energy
B. It also gains an electron
C. It is said to be an energy intermediate
D. All of the above.
4. Organisms store energy in the form of molecules possessing chemical (or potential) energy. In animals, this is a polymer that can be broken down into monomers that then enter glycolysis. This polymer is:
A. Starch
B. Acetyl CoA
C. Glucose
D. Glycogen
5. The nuclei of different atoms attract electrons with different affinities. Which subatomic particle is responsible for these differences?
A. Electrons
B. Neutrons
C. Protons
D. Muons
6. Which of the following locations of metabolic reactions in an animal cell are correct?
A. Photosynthesis: plant mitochondria
B. Glycolysis: animal mitochondria
C. Electron transport chain/oxidative phosphorylation: mitochondrial intermembrane space
D. Citric acid cycle: mitochondrial matrix.
7. Enzyme A has a Km of 1.0 mM, whereas enzyme B has a Km of 0.1 mM. they both have the same Vmax. If the substrate concentration was 0.5 mM, which reaction, the one catalyzed by enzyme A or B, would have the higher velocity?
A. Enzyme A
B. Enzyme B
C. Both would have the same rate
D. Neither enzyme will function
8. The energy driving the movement of sodium ions into a cell through channels can be due to:
A. the gradient made by Na, K-ATPase activity.
B. net positive charge inside the cell attracting the sodium cation
C. Ligands opening sodium channels
D. None of the above
9. What happens to the pH outside a thylakoid disk when PS1 is exposed to light?
A. It will decrease
B. It will increase
C. It will not change
10. How is ATP made in the citric acid cycle?
A.Oxidative phosphorylation
B. Citric acid cycle
C. Pyruvate oxidation
D. Substrate level phosphorylation
11. What important molecule is directly produced when pyruvate is converted to lactate during fermentation?
A. Oxygen
B. ATP
C. NAD+
D. Acetyl CoA
12. Regarding the Lac operon in E. coli cells, when lactose is present in the environment:
A. Large amounts of beta-galactosidase and lactose permease are made
B. Trace amounts of beta-galactosidase and lactoise permease are made
C. No beta-galactosidase or lactose permease are made
D. the lac operon is induced
13. In terms of ATP production, what would one expect to observe if the pH of the matrix decreased slightly?
A. it would increase
B. it would decrease
C. it would cease
D. it would remian the same.
14. Which of the following reactions would require the hydrolysis of two ATP molecules (delta G for the hydrolysis of one ATP is -7.3 kCal) for it to occur?
A. a reaction that has a delta G = -8 kcal
B. a reaction that has a delta G = +8 kcal
C. a reaction that has a delta G = -16 kcal
D. a reaction that has a delta G = +16 kcal
15. If the active site of an enzyme was lined with amino acids with R groups that contained COOH functional groups, what properties should the substrate possess?
A. Hydrophilic and positively charged
B. Hydrophilic and negatively charged
C. Hydrophobic
D. Phosphorylated