Which chemical(s) carry an impulse along a nerve cell?
A. iron and sodium
B. scandium and iron
C. sodium and potassium
D. hydroxyapatite
Which of these is true of viruses?
A. They are larger than bacteria.
B. They are acellular.
C. Some are parasitic; some are not.
D. Their genetic material can be composed of DNA, RNA, or both.
Which of these correctly matches photosynthesis and aerobic cellular respiration with their corresponding, balanced chemical equations?
A. Photosynthesis: 6CO2 + 6H2O + EM Radiation -> C6H12O6 + 6O2 Cellular Respiration: C6H12O6 + 6O2 -> 6CO2 + 6H2O + 36ATP
B. Photosynthesis: 6CO2 + 6H2O + 36ATP -> C6H12O6 + 6O2 Cellular Respiration: C6H12O6 + 6O2 -> 6CO2 + 6H2O + 36ATP
C. Photosynthesis: 6CO2 + 6H2O + EM Radiation -> C6H12O6 + 6O2 Cellular Respiration: 6C6H12O6 + 6O2 -> 6CO2 + 6H2O + 36ATP
D. Photosynthesis: C6H12O6 + 6O2 -> 6CO2 + 6H2O + 36ATP Cellular Respiration: 6CO2 + 6H2O + EM Radiation -> C6H12O6 + 6O2
Meiosis produces ____ cells and mitosis produces ____ cells.
A. somatic; germ
B. body; somatic
C. germ; gametic
D. germ; somatic
Which of these is not a part of the body's chemical defense system against infection?
A. lysozyme
B. agranulocyte
C. urine
D. hydrochloric acid
Which of these is considered an example of naturally acquired passive immunity?
A. breastfeeding
B. inactivated (killed) vaccine injection
C. attenuated (live) vaccine injection
D. exposure to a disease and subsequent immunity
Worms lack which of these?
A. eyes and brain
B. eyes and ears
C. brain and ears
D. nose and brain
Which organelle is responsible for generating ATP that is used for chemical energy?
A. ribosome
B. vesicle
C. mitochondria
D. Golgi apparatus
Which of these statements is true with regard to eukaryotic and prokaryotic cells?
A. Prokaryotic cells can contain lysosomes.
B. Prokaryotic cells have a nucleus.
C. Prokaryotic cells can contain lysosomes and eukaryotic cells have mitochondria.
D. Eukaryotic cells have mitochondria.
Positive feedback is a mechanism used by the body that results in amplification or enhancement of a signal that has already been activated. An example of this would be ____.
A. shivering to increase temperature
B. the release of oxytocin to increase contractions during childbirth
C. slowing metabolism in response to starvation
D. blood vessels regulating blood pressure
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