Which of the following prokaryotic nutritional
groups use CO2 and inorganic substances to produce
energy?
a. photoautotrophs
b. chemoautotrophs
c. photoheterotrophs
d. chemoheterotrophs
e. none of these
Answer: b
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For each statement, indicate whether it is True or False. If you choose False, briefly explain why the statement is incorrect. True or false. Organisms higher in a food web eat everything that is lower in the food web
What will be an ideal response?
Which of the following statements about enzymes is FALSE?
A. The active site of the enzyme is where the chemical reaction takes place. B. The substrate binds to the enzyme with low affinity. C. The enzyme undergoes a conformational change that brings substrates closer together in an induced fit. D. The optimal activity of an enzyme occurs over a narrow temperature range. E. The optimal activity of an enzyme occurs within a narrow pH range.
The dominant Huntington disease allele causes severe neural/brain damage at approximately age 40. A female whose mother has Huntington disease marries a male whose parents are normal. It is not known if the female has the disease. Keeping in mind that the disease allele is rare in the population, what is the probability that their firstborn will inherit the gene that causes Huntington disease?
A) 25% B) 50% C) 75% D) 100% E) 0%
How would the pattern of inheritance for Rh factor be best described?
A) incomplete dominance B) codominance C) dominant-recessive D) sex linkage