Which is the smallest unit of life that can exist as a separate entity?
a. a cell
b. a molecule
c. an organ
d. an organelle
e. an ecosystem
A
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Which environment would be most likely to produce trees without annual rings?
a. tropical rain forest b. northern evergreen forest c. areas with alternating wet and dry seasons d. temperate-deciduous forests e. annual rings are characteristic of all trees
A blood sample taken from a patient fighting an infection is expected to show
a) reduced white blood cell count b) elevated white blood cell count c) elevated red blood cell count d)reduced red blood cell count
How can a chikungunya infection be differentiated from a dengue infection?
A) Differentiation is based on symptoms due to the two presenting quite differently. B) liver biopsy C) blood tests that identify viral antigens, viral RNA, or patient antibodies to the virus D) microscopic analysis of the blood E) stool analysis
During which of the phases of cellular respiration is the majority of ATP formed?
A) All phases produce the same number of ATP molecules B) Glycolysis C) Processing of pyruvic acid for the Krebs cycle D) Krebs cycle E) Electron transport