Suppose you have discovered a new virus and have isolated its nucleic acids. What feature could you look for to determine whether the nucleic acids of this virus are RNA or DNA?
A) If is RNA, it will contain deoxyribose. B) If it is DNA, the virus will not contain proteins.
C) If it is RNA, there will be no adenine. D) If it is RNA, it will contain ribose.
D
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At the conclusion of S phase, a diploid cell with 40 chromosomes will have ____ chromosomes and _____ sister
chromatids.
a. 20; 40 b. 20; 20 c. 40; 40 d. 40; 80 e. 80; 80
The scientist(s) given credit for first determining the molecule structure of DNA by building a ball-and-stick model was/were
A. Hershey and Chase. B. Avery and Macleod. C. Griffith. D. Watson and Crick. E. Chargaff.
The distance in the DNA from +1 to the polyadenylation signal for a human gene is 40,000 nucleotide pairs. However, the size of the mature mRNA found associated with a ribosome during translation is 3,000 nucleotides. The most likely explanation for this difference is?
a. a missense mutation in the gene b. a mutation in the AUG codon to CUG c. loss of the 5' cap of the mRNA d. the presence of one or more introns in the gene
Which cellular organelle contains enzymes that are considered digestive?
A. Golgi Apparatus B. Lysosomes C. Nucleus D. Ribosomes