The breakdown of ____ provides the energy needed for chemical reactions in the body.
A. RNA
B. ATP
C. ADP
D. ATE
Which of the following statements about atoms is false?
A. Electrons do not orbit an atom's nucleus; they exist in electron clouds surrounding the nucleus.
B. As each orbital of an atom is filled to capacity, electrons begin occupying a higher energy orbital.
C. Most of the volume of an atom is empty space.
D. Atoms are most stable when their outer electron shell (valence shell) is incomplete.
Halophile archaebacteria only survive in which type of environment?
A. cold
B. heat
C. salt
D. low pH
Bacteria that need oxygen to survive are called ____.
A. oxyphillic
B. anaerobic
C. oxyphobic
D. aerobic
A pea plant has alleles for the dominant tall gene (T) and the recessive short gene (t). Therefore, it appears as Tt. Which of the following will correctly describe its phenotype if there is complete dominance? And which describes incomplete dominance? (complete, incomplete)
A. Tall, Tall
B. Average. Tall
C. Tall, Average
D. Tall, Short
What is the function of tRNA during DNA transcription?
A. tRNA bonds together amino acids and then releases them to create an elongated chain of amino acids.
B. tRNA contains codons during DNA transcription.
C. tRNA is the piece of DNA produced during transcription.
D. tRNA brings the amino acids to the site of synthesis.
Which pH would be the most basic?
A. pH 7
B. pH 4
C. pH 9
D. pH 5
Positively charged particles in an atom are called ____.
A. protons
B. electrons
C. ions
D. neutrons
Which of these is not a biotic factor?
A. rock
B. rose
C. child
D. worm
Which is not a morphology of bacterial classification?
A. Vibrio
B. Bacillus
C. Gram
D. coccus
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