Protein sequences consist of how many amino acids?
a. 20
b. 10
c. 5
d. 3
a. 20
Protein sequences consist of 20 amino acids.
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DNA contains the template needed to copy itself, but it has no catalytic activity in cells. What catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA polymer being formed?
A) ribozymes B) DNA polymerase C) ATP D) deoxyribonucleotide triphosphates
The synonym for land plants is ____ because all land plants produce a protected embryo during their reproductive
cycle.
a. tracheophyte b. embryophyte c. sporophyte d. gametophyte e. charophyte
A drug produced using recombinant DNA technology that is used illegally by athletes is
A) insulin. B) streptokinase. C) tissue plasminogen activator. D) erythropoietin.
A client displays symptoms of fatigue, diarrhea, weight loss, neurological changes, and enlarged lymph nodes. The client thought they had the flu because they felt ill, then felt better over the last 5 years. However, this cycle of feeling tired has led to fever, fatigue, sore throat, and night sweats with a rash. The patient also has thrush. Which result indicates the causative agent of AIDS?
A) Isolation of herpes simplex from skin and mucous membrane ulcers B) High level of CD4 T-cells C) Presence of Candida albicans D) Isolation of Mycobacterium turberculosis E) Detection of HIV antigen