A holoenzyme is a combination of a protein and one or more substances called
A. apoenzymes.
B. cofactors.
C. substrates.
D. catalysts.
Answer: B
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Which of the following is a difference between weak chemical bonds and covalent or ionic bonds?
A. Weak chemicals bonds are harder to break. B. Weak chemical bonds are shorter than covalent or ionic bonds. C. Weak chemical bonds are transient compared to covalent and ionic bonds. D. Weak chemical bonds are not particularly useful in biological systems. E. Weak chemical bonds require more energy to break than covalent and ionic bonds.
AST was performed using Mueller-Hinton agar with 5% sheep blood, 35°C in 5% CO2 from 24 hours according to standard protocols, what is the most likely identity of the organism being tested?
a. S. aureus b. Streptococcus pneumoniae c. Neisseria gonorrhoeae d. Moraxella catarrhalis
Imagine that you have two people using breathing gear under water. Diver 1 is using an old style "rebreather" that removes carbon dioxide before the mixture is "rebreathed" and therefore decreases overall carbon dioxide concentrations in the blood. Diver 2 is using regular SCUBA gear and is breathing air with the normal amount of carbon dioxide that does not lower blood levels of carbon dioxide. Which diver would have a higher blood pH and which would feel more an "urge to breathe"?
A. Diver 1 would have higher blood pH and would feel the "urge to breathe" sooner. B. Diver 2 would have higher blood pH and feel the "urge to breathe" sooner. C. Diver 1 would have higher blood pH, while Diver 2 would feel the "urge to breathe" sooner. D. Diver 2 would have higher blood pH, while Diver 1 would feel the "urge to breathe" sooner. E. There would be no difference in blood pH or breathing between the two divers.
Discuss the sexual and asexual reproduction of Rhizopus, the black bread mold. Include the names of the structures
involved. What will be an ideal response?