Which of the following is true?
a. Major eukaryotic groups contain either only multicellular or unicellular species.
b. Eukaryotes became multicellular upon endosymbiosis with bacteria.
c. Multicellularity has evolved many times in eukaryotes.
d. Multicellularity is always advantageous for the individual.
C
You might also like to view...
Which statement accurately describes the relationship between RNAi, small interfering RNA (siRNA), and miRNA?
a. They all describe different methods of post-translational gene regulation. b. miRNAs are classified into two types: RNAi molecules and siRNAs. c. RNAi occurs in two ways: by miRNAs or by siRNAs. d. RNAi is accomplished by siRNA and miRNA, but only siRNAs are cleaved by dicer proteins. e. miRNAs are transcribed from viruses while siRNAs are transcribed from nuclear DNA; both are types of
Microbes that are found in hot springs or other extreme environments are most likely to be ____
a. Gram-negative b. Gram-positive c. archaeans d. cyanobacteria e. proteobacteria
Suppose you discover a mutant plant that cannot actively transport solutes across the tonoplast. Which
of the following should you expect?
a. The plant will wilt easily. b. The plant will generally be like a normal plant. c. The plant will not have leaves. d. The plant will not have roots. e. The plant cells will not be able to divide.
What process or enzyme was used for Step 1 in Figure 15-1?
a. PCR
b. a bacteriophage
c. a reverse transcriptase
d. a DNA ligase
e. a restriction enzyme