Enzymes
a. are very specific.
b. act as catalysts.
c. are organic molecules.
d. have special shapes that control their activities.
e. are all of these.
Answer: e
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Answer the following statements true (T) or false (F)
1. The covalent bonds that hold monosaccharides together in a polysaccharide are called glycosidic bonds. 2. A DNA nucleotide consists of the following three parts: a nitrogenous base, ribose, and a phosphate group. 3. The waxes in the cell walls of Mycobacterium tuberculosis cause this organism to be acid-fast. 4. The basic structure of a cell membrane is a lipid bilayer. 5. DNA polymerase is the only enzyme required for DNA replication.
The survival of most organisms is immediately threatened if they live at the site of a catastrophic forest fire, volcanic eruption, or dust storm. These events, however, can launch soot, ash, or dust into different levels of the atmosphere, measurably lowering available sunlight at locations thousands of miles from the site. The are most quickly and strongly impacted at these distances, with lack of growth and reproduction.
A. autotrophs, such as crops and woodlands B. heterotrophs, such as humans and livestock C. deep-sea thermal vent communities D. All of the answer choices are correct. E. All of the organisms in domain Bacteria.
The smallest arteries, called ________, are barely visible to the unaided eye
Fill in the blank(s) with correct word
Humans can be accidental intermediate hosts for some tapeworms
Indicate whether the statement is true or false