The openings to the ___________ system (respiratory system) in insects are termed _________.
A. spiracle, tracheae
B. tracheal, bronchi
C. spiracle, alveoli
D. tracheal, spiracles
E. tracheal, stomata
D. tracheal, spiracles
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The first law of thermodynamics states that
1.the total amount of energy in a system and its surrounding remains constant. 2.the total disorder of a system and its surroundings always increases. 3.plants create energy. 4.animals destroy energy.
The extreme thermophilic archaean Nanoarchaeum
a. lives near hydrothermal vents. b. can live in temperatures above 230°F. c. is among the smallest known cells. d. is a parasite. e. is all of these.
Which of the following statements about lactic acid fermentation is FALSE?
a. It uses glucose as a substrate. b. It is inefficient compared to aerobic respiration. c. It produces two ATP molecules for every glucose molecule. d. Oxygen is the final electron acceptor of this pathway. e. Glycolysis is the only energy-yielding step of this pathway.
The human X and Y chromosomes _____
A) are both present in every somatic cell of males and females B) are the same size and have the same number of genes C) include genes that determine an individual's sex D) are called autosomes