When plants bend toward or away from a light source, what is this called and which type of light causes the response?
a. phytochromism, far red light
b. photoperiodism, red light
c. phototropism, blue light
d. photosynthism, both red and blue light
c. phototropism, blue light
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The bone in the thigh is the
a. femur. b. tibia. c. fibula. d. ulna. e. scapula.
In a cool environment, an ectotherm is more likely to survive an extended period of food deprivation than would an equally sized endotherm because the ectotherm _____
A) maintains a higher basal metabolic rate B) expends more energy per kilogram of body mass than does the endotherm C) invests little energy in temperature regulation D) has greater insulation on its body surface
Blood vessels are found in the
A. stratum corneum B. dermis C. stratum basale D. subcutaneous layer E. dermis and subcutaneous layer
In human chromosomes, satellite DNA sequences of about 170 base pairs in length are present in tandem arrays of up to 1 million base pairs. Found mainly in centromere regions, these DNA sequences are called ________
A) telomeres B) telomere-associated sequences C) primers D) euchromatic regions E) alphoid families