Who believed the species on Earth changed over time as a result of periodic great catastrophes?
A) Charles Lyell B) Jean-Baptiste de Lamarck
C) Alfred Russel Wallace D) Georges Cuvier
Answer: D
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Harmful amounts of ________ may be absorbed by the leaf cuticle as well as by carotenoids and flavonoids.
A. carbon dioxide B. blue and red light waves C. chlorophyll D. xanthophylls E. UV radiation
Some viruses have the ability to stimulate uncontrolled growth of the host cells, resulting in cancer. Which virus has oncogenic properties?
a. Measles b. Papilloma c. Retroviruses d. Influenza
The synthesis and secretion of ____ is ultimately regulated by gonadotropin-releasing hormone from the ____
a. estrogen; posterior pituitary b. estrogen; ovaries
c. testosterone; hypothalamus d. testosterone; testes e. androgens; gonads
Which of the following is a function of the nucleus?
A. stores DNA B. stores sugars C. builds proteins D. packages proteins