Bacteria can synthesize unsaturated fatty acids only under anaerobic conditions.
Answer the following statement true (T) or false (F)
False
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The Deinococci stain Gram-positive but have a layered cell wall and an outer membrane that is more like a Gram-negative organism.
Answer the following statement true (T) or false (F)
The mitosome of Giardia has no DNA within it. If it did contain DNA, then what predictions should we be able to make about its DNA?
1. It is linear. 2. It is circular. 3. It has many introns. 4. It has few introns. 5. It is not associated with histone proteins. 6. It is complexed with histone proteins. A) 1, 3, and 5 B) 1, 4, and 5 C) 2, 3, and 6 D) 2, 4, and 5
Cardiovascular disease is the second leading cause of death in the United States.
Answer the following statement true (T) or false (F)
Why is ATP needed for muscle contraction?
A) It's needed for calcium release from the sarcoplasmic reticulum. B) Myosin must contact the actin filament and move to pull it toward the midline of the sarcomere. C) It causes calcium to bind to troponin. D) It causes tropomyosin to slide off the myosin-binding sites of actin.