In which of the following do the mucous membranes serve as a portal of entry for disease?
A) a pathogen crosses from the mother to the fetus by way of the placenta.
B) A person rubs the eye with contaminated fingers and the pathogen is washed into the nasal cavity by way of tears.
C) A person is bitten by a mosquito that carries the malaria parasite.
D) Fungi digest the outer layer of the skin.
E) A person receives an injection with a contaminated needle.
B
Bloom's Taxonomy: Comprehension
Section: The Invasion and Establishment of Microbes in Hosts: Infection
Learning Outcome: 14.7
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Carotenoids are important to many plants because these pigments are able to
A. remove carbon dioxide from the air. B. absorb wavelengths of light that neither chlorophyll a nor b can absorb. C. absorb water so that hydrolysis can be carried out in the chloroplasts. D. capture UV radiation that is harmful to the DNA in the nucleus of plant cells. E. store electrons for use during the "dark" reaction of photosynthesis.
Muscle contraction accounts for over 75% of the heat generated by the body
Indicate whether the statement is true or false
According to IPCC predictions, the effects of climate change will be the most extreme in which of the following areas over the next century?
a) Polar areas b) The tropics c) Deserts at 30o latitude d) Climate change effects will be the same across the globe.
Which of the following are produced during the light reactions of photosynthesis?
A) glucose, ADP, NADP+ B) glucose, ADP, NADP+, CO2 C) ADP, NADP+, O2 D) ATP, NADPH, O2