An atom has 20 electrons and 20 neutrons. What is the mass of this atom?
A. 20
B. 10
C. 40
D. 80
Answer: C
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Which of the following would be most attractive to a female hummingbird? A mate protecting a territory with
A) many predators. B) many nectar feeding animals. C) many nectar bearing flowers. D) many other males.
Red-green color blindness is a sex-linked recessive trait in humans. Two people with normal color vision have a color-blind son. What are the genotypes of the parents?
A) XnXn and XnY B) XNXN and XnY C) XNXN and XNY D) XNXn and XNY
________ make(s) up more than half the volume of the brain.
A. Intercalated disks B. Neurons C. Neuroglia D. Hyaline cartilage E. Nerves
The cell membranes of fungi contain (cholesterol/ergosterol/fatty acid) which is a target of some antifungal treatments
What will be an ideal response?