The sun's energy is produced by:
a. nuclear fission reactions.
b. nuclear fusion reactions.
c. electromagnetic radiation.
d. ultraviolet radiation.
e. infrared radiation.
b
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The hypothalamic hormone that stimulates hormone secretion by the anterior pituitary gland is _____
A) luteinizing hormone (LH) B) follicle-stimulating hormone (FSH) C) inhibin D) gonadotropin-releasing hormone (GnRH) E) estradiol
What is a primary difference between polymerase chain reaction (PCR) and traditional cloning procedures such as those used to clone the human growth hormone gene?
A) PCR and traditional cloning make use of different types of bacteria. B) PCR and traditional cloning make use of different types of vectors. C) PCR uses plasmid vectors, whereas traditional cloning uses bacteria. D) PCR eliminates the need for restriction enzymes, vectors, and cells. E) PCR is more time-consuming, but the purity of the obtained DNA clone is much higher than in traditional cloning.
What is not a form of reproduction for marine fungi?
a. Budding b. Binary fission c. Production of a fruiting body d. Dispersion of conidiospores
Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development. In one strategy, the female retains the eggs within her body and the young are fully developed when they hatch inside of her. What is this called?
A. oviparity B. ovoviviparity C. viviparity D. protogyny E. protandry