What is the sugar component of DNA?

a. Glucose
b. Sucrose
c. Deoxyribose
d. Lactose
e. Ribose


c

Biology & Microbiology

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Which of the following elements can foster the process of crossing over?

A. RNA polymerase B. promoter elements C. enhancer elements D. transposable elements E. topoisomerase

Biology & Microbiology

In roots auxins tend to ________ cell elongation, in stems they promote cell elongation.

A. promote. B. not influence. C. have little effect on. D. not be a factor in. E. inhibit.

Biology & Microbiology

Removing some fluid from directly around a developing human fetus is performed by inserting a long needle into the belly of the female patient. What extraembryonic membrane will be punctured in this process?  

A.  chorion B.  amnion C.  chorionic villi D.  external epithelium of mother

Biology & Microbiology

Describe the DNA helix structure proposed by Watson and Crick

What is the diameter of the helix and the distance between bases? What types of bonds are involved in stabilizing the DNA backbone, and what types of bonds are found between complementary base pairs? Why would a sequence containing high concentrations of G and C require more energy to break the bonds?

Biology & Microbiology