Water molecules are attracted to each other due to the opposite charges created by partial charge separations within the molecules. These attractions are called:
A. double bonds.
B. ionic bonds.
C. hydrogen bonds.
D. peptide bonds.
E. covalent bonds.
Answer: C
You might also like to view...
A microbiologist would like to use a noncompetent genus of streptococcal bacteria, Enterococcus faecalis, as a cloning host to express genes from Streptococcus pneumoniae, which is naturally competent. Is this possible?
A. Yes; electroporation or chemical transformation can be used to make non-competent Streptococcus mutants, from which genes can be inserted into a cloning vector and introduced into Enterococcus. B. Yes; since the cloning host and the DNA to be introduced are both from bacteria that are streptococci, natural competence in this case is not necessary as long as the appropriate vector is used. C. Yes; electroporation or chemical transformation can be used to make Enterococcus competent, and then genes from Streptococcus can be introduced via a cloning vector. D. No; competence factor is an essential protein that enables the uptake of foreign DNA, therefore a cloning host such as Enterococcus that lacks competence factor protein is unable to be transformed by electroporation or chemical transformation.
Which molecule is a saturated fatty acid?
A) 1 B) 5 C) 8 D) 9
A joint that is movable in only two dimensions, such as the elbow, is called a ________ joint
Fill in the blank(s) with correct word
Which plant compound is involved in systemic acquired resistance and shows potential as a drug for preventing heart disease in humans?
A. Curcumin B. Strigolactone C. Resveratrol D. Caffeine E. Epicatechin