Oxygen and carbon dioxide move across a cell membrane by the process of active transport
a. true
b. false
Answer: b. false
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Which of the following genes is correctly matched with its function?
A. The Hox genes illustrate evolution of neural pathways. B. The BMP4 gene illustrates evolution of lungs for breathing air. C. The gremlin gene illustrates the evolution of the inner ear mechanism. D. The Pax6 gene illustrates the evolution of complex organs such as the eye. E. The gremlin gene along with the Pax6 gene code for development of the eye.
The species extinctions taking place today are
being caused by ____ activities.
a. human b. volcanic c. plate tectonic d. extraterrestrial e. geothermal
This type of tissue is described as having lots
of fibroblasts and collagen fibers, provides support for intestinal muscles and forms capsules around kidneys. This type of tissue is
a. dense, irregular connective. b. dense, regular connective. c. cartilage. d. stratified epithelium. e. simple squamous epithelium
Which of the following is NOT a tenant (or quality) of science?
A. Scientists try to avoid bias B. Science relies heavily on evidence C. Scientific ideas are subject to constant change D. Science relies on assumptions and imagination