A baby is born with spina bifida, which is a neural tube defect. This problem most likely initiated at which time in development?

A) late in the fetal period B) the pre-embryonic period
C) the embryonic period D) early in the fetal period


Answer: C

Biology & Microbiology

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A ___ is a chemical that is released by one animal that affects the physiology and or behavior of another member of the same species.

A) neurotransmitter B) neurochemical C) hormone D) pheromone

Biology & Microbiology

Microscopically, this fungus appears barrel shaped with thick walls, which best describes which type of conidia?

a. Macroconidia b. Chlamydoconidia c. Arthroconidia d. Blastoconidia

Biology & Microbiology

Enzymes that alter another protein or enzyme's activity by attaching a phosphate group are called:a

kinases. b. phosphatases. c. phospators. d. transcription factors. e. coenzymes.

Biology & Microbiology

Which metabolic process is most closely associated with intracellular membranes?

A) substrate-level phosphorylation B) oxidative phosphorylation C) glycolysis D) the citric acid cycle E) alcohol fermentation

Biology & Microbiology