The human immunodeficiency virus is a(n)
A. non-enveloped double-stranded DNA virus.
B. enveloped double-stranded DNA virus.
C. enveloped single-stranded RNA virus.
D. non-enveloped single-stranded DNA virus.
C.
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Trout and amoebas are both heterotrophs, and can inhabit similar environments (for example, a freshwater pond). However, these organisms are very different when it comes to their shape and size. Why?
A. Trout and amoebas utilize different sources of CO2. B. Trout and amoebas utilize different sources of C6H12O6 (or other organic compounds). C. Trout and amoebas utilize different sources of O2. D. Trout and amoebas have different metabolic pathways. E. Trout and amoebas are exposed to different environmental conditions, even when they inhabit the same pond.
RNA molecules that also act as enzymes are given the name
A. cofactors. B. coenzymes. C. allosteric enzymes. D. ribozymes.
Examine the following two DNA sequences
Sequence 1: ATGCGATGCTAGCAT Sequence 2: ATGCGATGATAGCAT If both of these sequences code for proteins, how might the function of protein 2 differ from the function of protein 1? Use the genetic code shown for assistance. A) Protein 1 and protein 2 will function exactly the same. B) Protein 1 will be shorter than protein 2, so they will not function the same. C) Protein 2 will be shorter than protein 1, so they will not function the same. D) Protein 2 has a different sequence, so it will function differently from protein 1.
Which cells are produced during meiosis I?
a. spermatogonia b. primary spermatocytes c. secondary spermatocytes d. spermatids e. sperm