Lack of ____in a diet can cause ____
a. iron; hypothyroidism
b. iodine; hypothyroidism
c. iodine; hyperthyroidism
d. iron; hyperthyroidism
e. iodine; hypertension
ANSWER: b
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Why do species with large body sizes typically have lower population densities?
a. each large organism consumes more available resources b. there are not enough individuals to grow the population c. genetic diversity is low d. small organisms have more potential mates e. large organisms do not like living near one another
In angiosperms, after fertilization, the triploid cell gives rise to:
a. a fertilized ovule b. a seed c. an embryo sporophyte d. endosperm e. a pollen grain
An example of a fat-soluble vitamin is vitamin K
____________________ Indicate whether the statement is true or false.
Given that CO2 is produced by cellular respiration, why does the amount of CO2 in the atmosphere remain relatively constant? (When answering this question, exclude the impact of human activities on atmospheric CO2.)
A) CO2 is converted to carbohydrates in photosynthesis. B) CO2 is split apart during photosynthesis. C) CO2 mostly forms carbonate rocks. D) CO2 is trapped in dead organisms' bodies.