Two elements within the same group:
a. occupy the same column on the periodic table of elements.
b. occupy the same row on the periodic table of elements.
c. occupy the same column on the periodic table and have the same number of electrons in their outermost shell.
d. have different numbers of electrons in their outermost shell.
e. have the same number of electrons in their outermost shell.
Ans: c. occupy the same column on the periodic table and have the same number of electrons in their outermost shell.
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You are out at night and hear a sound in the bushes. The electrical signal carrying this information to your brain is carried first by a
A. sensory neuron. B. motor neuron. C. interneuron. D. glial cell. E. All of these choices are correct.
When cloning DNA into bacteria, the ____
a. DNA sequence is inserted into a plasmid b. DNA sequence is inserted into the bacterial chromosome c. linear DNA sequence is circularized, thus generating a plasmid d. new DNA is directly introduced into the bacterial cell e. approach depends on the species of host bacteria used in the experiment
An individual who works in construction and is exposed to years of loud noises, below 75 decibels, will most likely develop a decease in hearing function. The structures that are damaged are the
A. organ of Corti. B. round window. C. auditory canal. D. tympanic membrane. E. stereocilia of the spiral organ.
A new antibiotic is developed that interferes with the way tRNA fits into bacterial ribosomes. How would this kill the bacteria?
A) Ribosomes would not be able to produce mRNA, and cell functions would halt. B) The bacteria would be unable to produce necessary enzymes to carry out basic metabolism. C) The tRNA would be unable to carry out transcription. D) tRNA would not unwind the DNA to allow DNA polymerase to copy it; thus, cell division would stop.