Which structure, A, B, C, D, or E, produces enzymes that complete digestion of proteins, carbohydrates, and nucleic acids, and absorbs products of digestion?
1.A
2.B
3.C
4.D
5.E
4
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What is the genetic code?
a. all of our genes collectively b. all of our base-pairs collectively c. the genetic “words” that code for amino acids d. the genes on DNA that code for proteins e. more than one of these describes the genetic code
What scientist(s) first demonstrated in the laboratory that organic compounds could be synthesized in an abiotic environment?
a) Rosalind Franklin b) Haldane and Oparin c) Urey and Miller d) Watson and Crick e) Anton Van Lueenhoech
Which of the following is TRUE with regard to the sliding filament mechanism of muscle contraction?
A) When a muscle fiber is contracting, the thin fibers are connected to the thick fibers. B) The energy for contraction comes from the breakdown of actin into myosin. C) The muscle relaxes when calcium ions are released into the fluid surrounding the thick and thin filaments. D) When actin pushes the Z discs farther apart, the muscle contracts.
Describe viruses
What will be an ideal response?