Which of the following cell types would not be found in connective tissue?
a. macrophages
b. red blood cells
c. chondrocytes
d. pseudostratified cells
e. adipose cells
D
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Which of the following is not true of the fossil record of life on Earth?
A. Vertebrates such as reptiles or mammals are less likely to leave a fossil record than annelids and flatworms. B. Animal species do not appear in the fossil record for billions of years after the emergence of microorganisms.
Ectothermic animals:a
depend on heat from the external environment to adjust their body temperatures. b. may dilate blood vessels to increase blood flow and heat to the skin. c. maintain a relatively constant body temperature despite external temperatures. d. may have feathers to keep them insulated. e. may have body fat to keep them insulated.
When a protein is denatured, which level of protein structure is unaffected?
A. primary B. secondary C. tertiary D. quaternary
Which of the following is required for composting?
A) addition of non-biodegradable materials B) addition of nitrogen and phosphorus sources C) periodic turning or raking of the compost pile D) addition of thermophilic microbes E) constant anaerobic conditions