Repressible operons are normally turned on in the cell.
Answer the following statement true (T) or false (F)
True
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If you are setting up a PCR reaction, how much extension time per cycle should you allocate for the Taq DNA polymerase to amplify a 5-kb DNA fragment from a 10-kb template?
A) 1 minute B) 2.5 minutes C) 5 minutes D) 10 minutes E) 20 minutes
Autotrophs:a
are exemplified by fungi. b. are exemplified by animals. c. cannot carry out cellular respiration. d. depend on heterotrophs for food. e. synthesize complex molecules from CO2, water, and energy.
The difference between taproot and fibrous root systems is that a taproot system:a
consists of many roots of the same size, while a fibrous root system has one main root with lateral roots. b. consists of one main root with lateral roots, while a fibrous root system has many roots of the same size. c. is characteristic of most monocots, while a fibrous root system is usually found in eudicots. d. can be modified for storage, while a fibrous root system cannot. e. is considered adventitious, while a fibrous root system is not.
Which of the following sequences is incorrect?
a. Males: inhibin: secreted by Sertoli cells b. Males: follicle-stimulating hormone: stimulate production of androgen binding protein c. Males: gonadotropin-releasing hormone: stimulate testosterone production d. Females: luteinizing hormone: stimulate ovulation e. Females: inhibin: decreased secretion of FSH