Archaeans resemble bacteria by the ____, and resemble eukaryotes by the ____
a. lack of membrane-bound organelles; presence of a nucleus
b. presence of similar cell wall proteins; presence of similar rRNA sequences
c. ability to perform aerobic respiration; presence of similar cell wall proteins
d. lack of membrane-bound organelles; presence of introns
e. presence of nucleoid region; lack of a nuclear envelope
ANSWER: d
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Which of the following is not a function of the kidneys?
A. All of these answer options are functions of the kidneys. B. elimination of toxic compounds C. regulation of water levels in the body D. regulation of electrolyte levels in the body E. regulation of blood pressure
Heartburn is caused by ____
a. the gastroesophageal sphincter remaining too tightly closed b. the gastroesophageal sphincter remaining a little open c. the pyloric sphincter remaining too tightly closed d. the pyloric sphincter remaining a little open e. both the gastroesophageal and the pyloric sphincters remaining too tightly closed
This process results in _____
1.large amounts of ATP for the cell
2.acetaldehyde
3.ethanol
4.lactate
Which of the following organs of the endocrine system secretes thyroxine and calcitonin?
a. pituitary gland b. pancreas c. hypothalamus d. adrenal glands e. thyroid gland