The receptors for steroid hormones are located inside the cell instead of on the membrane surface like most other signal receptors. This is not a problem for steroids because _____
A) the receptors can be readily stimulated to exit and relocate on the membrane surface
B) steroids do not directly affect cells but instead alter the chemistry of blood plasma
C) steroid hormones are lipid soluble, so they can readily diffuse through the lipid bilayer of the cell membrane
D) steroids must first bond to a steroid activator, forming a complex that then binds to the cell surface
Answer: C
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____ tissue attaches to bones and is responsible for producing body movements
a. Skeletal muscle b. Neural c. Epithelial d. Smooth muscle e. Connective
What was revealed with the completion of the Human Genome Project?
a. The sequence of the entire human genome b. The functions of all human genes c. The knowledge that all genetic variations lead to genetic disease d. The knowledge that all genetic variations are found outside of protein-coding regions e. The number, but not the locations, genes in the human genome
Biosphere
What will be an ideal response?
Cells contain organized structures that perform a specific function. These are known as:
A) organelles. B) prokaryotes. C) organs. D) cytoplasm. E) tissues.