Refer to the accompanying figure. What is the structure labeled as 9?
a. foot
b. gills
c. heart
d. siphons
e. digestive tract
b
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The temperature range that provides good organismal performance is the same from one species to another
Indicate whether the statement is true or false.
Evidence for the endosymbiotic theory does NOT include which of the following?
a. DNA in prokaryotes, mitochondria, and chloroplasts is arranged in a single, circular genome. b. Endocytosized cells have been directly observed to survive in the cytoplasm of the host cell. c. Endocytosized organelles have been directly observed to survive in the cytoplasm of the host cell. d. Fossils of prokaryotic cells in the process of endocytosizing cyanobacteria have been discovered. e. There are some rRNA sequences that are similar between prokaryotes, mitochondria, and chloroplasts.
Which of the following antibodies would most likely be involved with the immune response against a microorganism entering the digestive or reproductive tract?
A) IgA B) IgD C) IgG D) IgM E) IgE
Why aren't ferns commonly found in deserts?
A. Fern fronds are sensitive to UV light. B. Fern spores are unable to resist prolonged dry conditions. C. Ferns are non-vascular and cannot absorb water from deep within the soil. D. Fern pollen is spread by insects that do not occur in deserts.