Fossils found in the lowest geological strata are generally the most
a. advanced.
b. complex.
c. primitive.
d. widespread.
e. specialized.
c
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Answer the following statements true (T) or false (F)
1.When fluid enters the collecting duct, it is called urine. 2.An endotherm typically will have a larger nasal cavity than an ectotherm of equivalent mass. 3.Urine leaves the collecting duct and travels to the ureter. 4.Fever is part of humoral immunity since the temperature of the body is controlled from the bone marrow. 5.A doctor who attempts to induce a fever in a patient might be trying to help fight a pathogen or a cancer.
The adaptation that allows insects to blend into the background might be represented by:
A. the grass in a yard. B. the color of a building. C. the instar of grasshoppers. D. the leaves on a tree. E. tinted windows in a car.
When a plant responds to external stimuli, such as light, gravity, or touch by directional growth, these responses are
referred to as: a. turgor movements. b. sleep movements. c. nastic movements. d. circadian rhythms. e. tropisms.
Bacteria and archaea share which of the following characteristics?
A. They are both prokaryotic cell types. B. They are both sensitive to antibiotics. C. They both have peptidoglycan cell walls. D. They both have histones.