Answer the following questions true (T) or false (F)
1. Kinins block histamine's actions and therefore serve as anti-inflammatory drugs.
2. Pyretic drugs like aspirin, ibuprofen, and acetaminophen are all commonly used to reduce fever by increasing the production of prostaglandins in the hypothalamus.
3. Both the cellular and humoral branches of adaptive immunity have the goal of eliminating an identified antigen, but only the humoral branch develops a memory of the antigen so that future responses are faster.
1. FALSE
2. FALSE
3. FALSE
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In order to be acted on by sexual selection, what is required of a trait?
A) It must be something that influences mate choice by the opposite sex. B) It must be something that increases survival. C) It must be a male trait. D) It must be a trait that increases fertility.
Assume that plants with red flowers crossed with plants with white flowers give rise to plants with pink flowers. You can eliminate the plants with red flowers by crossing ________-flowered plants for the first generation, and _________-flowered plants for the second.
Fill in the blank(s) with the appropriate word(s).
A(n) __________ is a noncellular infectious particle with a protein coat enclosing DNA or RNA.
Fill in the blank(s) with the appropriate word(s).
Answer the following questions true (T) or false (F)
1. During cleavage, the vegetal pole of a frog egg contains larger cells than the animal pole. 2. The lenses of the eye are produced from the endoderm. 3. Bicoid mRNAs are produced by the zygote.