When bacilli in a chain fold back upon each other like a hinge, this cellular arrangement is termed a ________.
A. sarcina
B. tetrad
C. palisade
D. strep
E. staph
Answer: C
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In your observations of a new rotifer species, you note that diploid females can lay diploid eggs that in turn become diploid female adults. What do you conclude about this behavior?
A. This is asexual reproduction by way of parthenogenesis. B. This asexual reproduction by way of budding of a new individual from the parent. C. This is sexual reproduction by way of parthenogenesis. D. This is sexual reproduction because sperm must have been stored in the female for later fertilization of her eggs. E. This is sexual reproduction by way of diploid females laying haploid eggs that hatch into haploid males who in turn produce sperm that fertilizes other haploid eggs.
In flowering plants an ovary is part of a(n)
a. corolla. b. ovule. c. calyx. d. stamen. e. carpel.
Which of the following statements about regulation of thyroid hormones is true?
a) TSH positively feeds back on the hypothalamus causing TRH release b) T3 and T4 negatively feed back on the pituitary to reduce TSH release c) T3 and T4 negatively feed back on the pituitary to reduce TRH release d) TSH negatively feeds back on the hypothalamus to reduce TRH release e) Both b and d are true
The _____________includes bones of the limbs or fins, which are connected to the body's main axis by the pectoral and pelvic girdles.
A. axial skeleton B. appendicular skeleton C. endoskeleton D. hydrostatic skeleton E. exoskeleton