Explain why lacOc mutations are cis-acting, whereas lacI mutations can be trans-acting
What will be an ideal response?
The operator region does not produce a diffusible product, whereas the lacI gene does.
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The only part of an amino acid that differs from other amino acids is its R group.
Answer the following statement true (T) or false (F)
Which of the following equations is often used to show that an enzyme has formed a complex with its substrate?
a. enzyme + product ? substrate + enzyme ? enzyme-substrate complex b. enzyme + substrate ? product + enzyme ? enzyme-substrate complex c. product + enzyme ? enzyme-substrate complex ? substrate + product d. substrate + enzyme ? enzyme-substrate complex ? enzyme + product
The first complete plant genome to be sequenced was that of ____
a. Phaseolus vulgaris (kidney bean) b. Arabidopsis thaliana (thale cress) c. Zea mays (corn) d. Capsella burse-pastoris (shepherd's purse) e. Oryza sativa (rice)
All of the products of the light-dependent reactions
of photosynthesis listed below are used in the lightindependent reactions EXCEPT for a. O2. b. electrons. c. NADPH. d. ATP. e. hydrogen protons contributed by NADPH.