Part of the reason why salt dissolves in water is due to the formation of hydrogen bonds between water molecules and chlorine ions.
a. true
b. false
Ans: a. true
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Which of the following are pyrimidine nitrogenous bases?
A) guanine and adenine B) cytosine and uracil C) thymine and guanine D) ribose and deoxyribose E) adenine and thymine
A female bowerbird being unable to recognize
the mating ritual of a male toucan is an example of what type of isolating mechanism?
a. genetic b. ecological c. behavioral d. mechanical e. temporal
In humans, hair texture is an incompletly
dominant trait. Curly hair is the homozygous dominant trait; smooth hair is homozgous recessive; wavy hair is heterozygous. If two wavy haired individuals have children what is the expected phenotype ratio?
a. 1:2:1 b. 3:1 c. 4:0 d. 1:1 e. 1:0
Fermentation is the conversion of sugar into...
a. alcohol b.acid c.gas d.all of the above e. none of the above