Which of the following statements is correct?
A. All fungi, whether parasite or saprobe, are heterotrophs.
B. All saprobes are heterotrophic, but only some are parasitic.
C. All heterotrophs are parasites, but only some are saprobes.
D. All heterotrophs are fungi, and include both parasites and saprobes.
Answer: A
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Each branch point or node of a phylogenetic tree represents:
A. an environmental pressure for evolution. B. a mutational event that leads to two species. C. common ancestor to two connected branches. D. the beginning of a new domain. E. the point when life started on earth.
Which protist group are characterized by a multinucleate amoeboid-like feeding form?
a. plasmodial slime molds b. cellular slime molds c. water molds d. amoebozoa e. brown algae
If a cell reverses the process of beta-oxidation, which of the following molecules will it make?
A) glycerol B) amino acids C) fatty acids D) nucleotides E) starch
Which of the following is able to identify the pathogen responsible for intestinal symptoms?
A) upper GI endoscopy and colonoscopy B) selective and differential culture media C) microscopic examination of stool samples D) selective and differential culture media, molecular techniques, and microscopic examination of stool samples E) molecular techniques