Four of the following have radial cleavage patterns. Which one is the exception?

a. snails
b. salamanders
c. earthworms
d. sea stars
e. mammals


ANSWER: c

Biology & Microbiology

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Is produced along with water at the end of normal cellular respiration.

A) Cristae B) Electron transport chain C) Microtubules D) Glycolysis E) Flagella F) Plasma membrane G) Citric acid cycle H) ATP

Biology & Microbiology

The type of tissue illustrated in Figure 39-1 is:


a. elastic connective tissue.
b. simple squamous epithelium.
c. pseudostratified epithelium.
d. cartilage.
e. adipose tissue.

Biology & Microbiology

DNA sequencing data from the Human Genome Project indicates that there are about ________ protein-coding genes. 

A. 100,000 B. 140,000 C. 20,000 D. 30,000

Biology & Microbiology

Which microscope uses an ultraviolet light source?

a) Fluorescence microscope b) Phase-contrast microscope c) Darkfield microscope d) Confocal microscope

Biology & Microbiology