Which phylum contains segmented worms?
a. Annelida
b. Arthopoda
c. Porifera
d. Echinodermata
Ans: a. Annelida
Biology & Microbiology
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A sequence variant of a gene is called a(n)
A) allele. B) mutation. C) nucleotide polymorphism. D) ribotype.
Biology & Microbiology
In a mushroom, the primary mycelium is composed of __________ cells
a. monokaryotic b. dikaryotic c. homothallic d. coenocytic e. prokaryotic
Biology & Microbiology
What is the function of gap junctions?
a. to allow plant cells to communicate with each other b. to allow ions and small molecules to pass between cells c. to give the cell its shape d. to seal the spaces between cells
Biology & Microbiology
The neurotransmitter acetylcholine ____.
A. speeds heart rate B. induces skeletal muscle contraction C. increases anxiety D. has a role in memory and learning E. dilates pupils
Biology & Microbiology