#Question id: 4033
#Unit 3. Fundamental Processes
Which of the following statements is false regarding the sigma-factor?
A. It does not have a DNA-binding domain.
B. Interaction with the core enzyme unmasks the DNA-binding region.
C. Subregions 2.4 and 4.4 are involved in promoter recognition.
D. It can also bind to the nontemplate strand.
#Question id: 2541
#Unit 2. Cellular Organization
In bacteria, DNA will be found in ________.
#Question id: 451
#Unit 1. Molecules and their Interaction Relevant to Biology
The standard reduction potentials (E'°) for the following half reactions are given.
Fumarate + 2H+ + 2e– -> succinate E'° = +0.031 V
FAD + 2H+ + 2e– -> FADH2 E'° = –0.219 V
If you mixed succinate, fumarate, FAD, and FADH2 together, all at l M concentrations and in the presence of succinate dehydrogenase, which of the following would happen initially?
#Question id: 34176
#Unit 3. Fundamental Processes
#Question id: 4897
#Unit 8. Inheritance Biology
When two independent pure lines AAbb and aaBB of pea with white flowers are crossed, the F1 progeny has purple flowers. Gene A and B link at 20 map unit. The following conclusions were made
A. When an heterozygous individual of the genotype AaBb is test crossed, progenies with purple and white in a ratio of 1:3
B. When an heterozygous individual of the genotype AaBb is test crossed, progenies with purple and white in a ratio of 1:9
C. This is an example of complementary gene action
D. The F2 progeny obtained on selfing shows both pruple and white flower in a ratio of 9:7
Which of the following conclusions are correct?