A patient complains of fever, severe muscle and joint pain, and a rash. The patient reports returning from a Caribbean vacation one week ago. Which of the following do you suspect?
A) Lassa fever
B) dengue
C) Hantavirus hemorrhagic fever
D) typhus
E) yellow fever
B
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The chromosomes move to opposite poles during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase.
Which of the following organelles is not generally found in animal cells?
A) food vacuole B) centriole C) endoplasmic reticulum D) central vacuole E) mitochondrion
Phospholipase C catalyzes the reaction in which:a
IP3 is converted to DAG. b. PIP2 is split. c. a protein kinase is activated. d. calcium ions are released from the ER. e. DAG is converted to PIP2.
Garrod hypothesized that "inborn errors of metabolism" such as alkaptonuria occur because _____
A) metabolic enzymes require vitamin cofactors, and affected individuals have significant nutritional deficiencies B) enzymes are made of DNA, and affected individuals lack DNA polymerase C) certain metabolic reactions are carried out by ribozymes, and affected individuals lack key splicing factors D) genes dictate the production of specific enzymes, and affected individuals have genetic defects that cause them to lack certain enzymes