Denaturation disrupts a protein's ________
a. peptide bonds
b. hydrogen bonds
c. amino acid sequence
d. primary structure
b
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Answer the following statements true (T) or false (F)
1. The membrane attack complex is involved in specific immune defense mechanisms. 2. The three major types of pathogens are bacteria, viruses, and cancer. 3. Helper T cells activate both B cells and cytotoxic T cells. 4. The first stage of a specific immune response is the activation of B cells and T cells. 5. Hypermutation refers to the process by which immunoglobulin gene domains recombine to form a diverse array of antibodies.
The Krebs cycle produces
A. oxygen and ATP. B. ATP, NADH, FADH2, and CO2. C. pyruvate and PGAL. D. carbon dioxide and oxygen. E. NADH, FADH2, and oxygen.
Blood types (A, B, and O) are controlled by
a. sex-linked genes. b. linked genes. c. incompletely dominant genes. d. multiple alleles. e. simple dominance
You go on a canoe trip to the Boundary Waters Canoe Area (BWCA) in Northern Minnesota. This ecosystem is cold most of the year and receives plenty of rainfall. It has many lakes that are full of walleye pike fish. You know that walleye like to eat minnows. In turn, the minnows feed on scuds (zooplankton) which eat algae (phytoplankton). In this system, the zooplankton are the
A. primary consumers B. decomposers. C. producers. D. secondary consumers.