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

Biology & Microbiology

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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

Biology & Microbiology

Describe viruses

What will be an ideal response?

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology