DNA vaccines ____
a. use RNA to assist in the transformation process
b. have been created but are ineffective
c. show promise in animal studies and are now in clinical trials
d. have been approved by the government to fight several diseases
e. sometimes infect the subject with the disease it’s attempting to fight
c
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Several rhizobial species within a cross-inoculation group should be able to grow with particular legume species such as alfalfa. However, the same cross-inoculation group would be unable to associate with another legume species such as peas
Indicate whether the statement is true or false.
To form a blood clot, a series of plasma proteins must activate in a given sequence. If DNA info for one such protein mutates such that the resulting protein is nonfunctional, predict the consequence.
A. It depends on which protein is affected. B. Regardless of the protein involved, the clot would not form.
The function of bile is to
A. digest proteins. B. digest carbohydrates. C. emulsify fats. D. digest nucleotides. E. emulsify proteins.
Bacteria need iron for growth. However, iron is not found in free form in the blood. So how do bacteria obtain iron?
A. Secrete enzymes that denature transferrin, a protein that is bound to iron. B. Ingest chelating proteins known as siderophores C. Secrete chelating proteins known as siderophores D. Extract iron from the hosts' own transferrin molecules E. Both Secrete siderophores and extract iron from the hosts' own transferrin molecules