Carbon has 4 electrons and hydrogen has 1 electron in their outer most electron shells. How many bonds can form between a carbon atom and hydrogen atoms?

A. 0
B. 1
C. 2
D. 3
E. 4


E. 4

Biology & Microbiology

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Which of the following is/are common to chemiosmosis and the light-dependent reactions of photosynthesis?

A) reduction of NADP+ only B) electron transport only C) a proton gradient only D) both electron transport and a proton gradient E) electron transport, a proton gradient, and reduction of NADP+

Biology & Microbiology

Fermentors have a built-in device called a sparger. What does a sparger do?

A. It monitors the pH of the medium. B. It aerates the medium to promote aerobic growth. C. It monitors the temperature of the medium. D. It adds a continuous supply of glucose to the media. E. It stirs the mixture of microbe and nutrients.

Biology & Microbiology

When only one nucleotide base is involved in a mutation, this is called 

A. chromosomal mutation. B. template error. C. point mutation. D. nonsense codon.

Biology & Microbiology

The phenotypic ratio for the F1 generation that results from a testcross between a homozygous individual and a heterozygous individual is  

A.  1:1 B.  2:1 C.  3:1 D.  1:2:1

Biology & Microbiology