Which of the following can only be viewed by electron microscopy?

A) frog eggs
B) viruses
C) nuclei
D) mitochondria
E) bacteria


B) viruses

Biology & Microbiology

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At a certain point in the flowering process, shoots become committed to making a flower. This is called 

A. apomixis. B. bilateralism. C. phase change. D. competence. E. floral determination.

Biology & Microbiology

Which of the following lack a nucleus and are structurally simple?

a. eukaryotes b. prokaryotes c. fungi d. algae e. protists

Biology & Microbiology

Estimating the uncertainty of phylogenetic trees using computer-generated replicates from an original data set is known as ________

A) a heuristic search B) the likelihood scenario C) Bayesian inference D) bootstrapping

Biology & Microbiology

A basidiomycete in the genus (Candida/Penicillium/Trichosporon) has recently been recognized as an opportunistic pathogen of AIDS patients. 

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology