There are times when the spleen can be considered to be the primary lymph node.
a. true
b. false
Answer: a. true
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In an annual tree ring, the wood with large diameter, thin-walled cells is ____
a. called early wood b. heartwood
c. formed from crushed phloem cells d. produced in the winter e. called late wood
The __________ biome has the greatest species richness of the terrestrial biomes
a. tropical rainforest b. savanna c. grassland d. chaparral e. temperate deciduous forest
CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-COOH is a(n)
A. fatty acid. B. amino acid. C. glycerol. D. steroid.
Which of the following statements are correct? I) Hormones often regulate homeostasis through antagonistic functions. II) Hormones of the same chemical class usually have the same function
III) Hormones are secreted by specialized cells usually located in exocrine glands. IV) Hormones are often regulated through feedback loops. A) only II and III B) only I and III C) only III and IV D) only I and IV