What law was passed to address the problem of rapid species loss in the United States?
A) the Endangered Species Act of 1973
B) the Wilson-Biophilia Act of 1994
C) the Biodiversity Act of 1975
D) the Human Intervention Act of 1979
A
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Based on comparisons of many human DNA sequences, our level of DNA variation is ____
Fill in the blank with the appropriate word.
What role does clathrin play in receptor-mediated endocytosis?
a. Clathrin is the receptor where the highly specific binding takes place. b. Clathrin initiates the transcription of the receptor proteins that will coat the pit. c. Clathrin attaches to the plasma membrane’s cytoplasmic side, forming the coated pit. d. Clathrin production blocks the formation of the coated pit.
A soft drink manufacturer, notorious for making marketing claims that are deceptive but technically accurate, has released a new sports beverage. The advertisements for this beverage assert that it contains three grams of chlorophyll per bottle, which will give the user extra energy during exercise performed in direct sunlight. Naturally, you buy a bottle to test its ingredients, and you are able to verify that it does, in fact, contain three grams of plant-sourced chlorophyll. Have you finally caught the company in a lie?
a. Yes! Three grams of chlorophyll is insufficient to produce measurable amounts of energy. b. No; chlorophyll in leafy greens and sports drinks continues photosynthesis after ingestion. c. Yes! Sunlight will have no effect on the amount of energy derived from digested chlorophyll. d. Yes! Humans cannot metabolize the carbohydrates produced by photosynthesis.
What are proteins?
a. long chains of glucose molecules b. long chains of fatty acids c. long chains of amino acids d. long chains of nucleotides