Which of these are the smallest of veins that form when capillaries merge?
A) venules B) veins C) arteries D) arterioles
Answer: A
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In pea plants, the allele for tall (T) is dominant to the allele for short (t). The genotype for a short pea plant is ________.
A) Tt B) tt C) Tt or tt D) TT or tt
Identify the stage of mitosis shown in panel A
a. interphase b. prophase c. metaphase d. anaphase e. telophase
Which of the following statements is FALSE?
a. Heat loss represents a one-way loss of energy from an ecosystem. b. Organisms in the food chain can use all the energy contained in the food that they eat. c. In some ecosystems, the majority of the energy stored in plants does not become available until the plants die. d. Heat and energy are lost by each organism in the ecosystem. e. The two food webs are classified as grazing and detrital.
What is the name given to the respiratory ailment in which the bronchioles constrict severely?
a. pleurisy b. emphysema c. bronchitis d. laryngitis e. asthma