The fungus, Batrachochytrium dendrobatidis, is a chytrid that infects and kills frogs in North America. It is an example of:
a. a parasite
b. a toxin
c. a decomposer
d. a fermenter
e. a mycorrhizal fungus
a
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The chewy, stringy cells in celery are which cells?
a. xylem b. collenchyma c. phloem d. sclerenchyma e. parenchyma
The taller a Brazil nut tree is, _____
1. the more valuable it is as a source of lumber 2. the less useful it is to harpy eagles 3. the greater its photosynthetic rate relative to neighboring plants A) 1 only B) 1 and 2 C) 1 and 3 D) 2 and 3
A change in the nucleotide sequence of a gene that alters the amino acid sequence of the resulting polypeptide; A codon is changed from encoding one amino acid to encoding a different amino acid
What will be an ideal response?
Hutchinson's teeth are
A. a symptom of congenital syphilis. B. a symptom of untreated Lyme disease. C. a symptom of untreated periodontal disease. D. a symptom of congenital Chlamydia trachomatis. E. a symptom of ANUG.