Into which group would you place a multicellular organism that has a mouth and lives inside the human liver?
a. Animalia
b. Fungi
c. Plantae
d. Proteobacteria (gram-negative bacteria)
e. Firmicutes (gram-positive bacteria)
Ans: a. Animalia
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The biosynthetic pathway for chlorophyll includes approximately how many steps?
A. 3 B. 6 C. 10 D. 17 E. 40
The digestion of proteins, lipids, and carbohydrates is completed in the ________
Fill in the blank(s) with correct word
What is the main role of membrane proteins?
A) Hold the phospholipid bilayer together B) Block materials from entering the cell C) Regulate the passage of materials in and out of the cell D) There are no membrane proteins in the plasma membrane
The greenhouse effect is
A) of little concern, since it is part of the normal cycle for the planet. B) reduced by photosynthesis, which removes carbon dioxide from the atmosphere. C) reduced by the addition of carbon dioxide to the atmosphere, since carbon dioxide removes excess heat from the Earth's surface and reflects it back into space. D) made worse by photosynthesis, which adds carbon dioxide to the atmosphere. E) reduced by the burning of fossil fuels, which removes oxygen from the atmosphere.