Which kingdom contains nonphotosynthetic multicellular organisms that digest their food internally?
A. Plantae
B. Protista
C. Animalia
D. Archaea
E. Fungi
Answer: C
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Chemokines are a group of small proteins that
A) attract T cells to sites of injury. B) function as chemoattractants for phagocytes and lymphocytes. C) potentiate specific immune responses. D) attract T cells, phagocytes, and lymphocytes, as well as potentiate specific immune responses.
How many skeletal muscles are found in the
body?
a. 900 b. 800 c. 350 d. 700 e. 70
Menstruation occurs during what days of the uterine cycle?
A. days 6-13 B. days 1-13 C. days 15-28 D. days 1-5 E. days 28-32
A typical AA battery has a potential of 1.5V. One can think of the potential in a neuron as having similarities to that of a battery.How does the resting potential of a typical neuron compare to that of a 1.5 V AA alkaline battery?
A. A typical neuron has a resting potential of -70V, or about 50 times the voltage of the battery. B. A typical neuron has a resting potential of -70mV, or about 5% the voltage of the battery. C. A typical neuron has a resting potential of +70V, or about 50 times the voltage of the battery. D. A typical neuron has a resting potential of +70mV, or about 5% the voltage of the battery.