TCAP Prep 8: Question Preview (ID: 18872)

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Which of the following is true about Bohr's model of the atom?
a) the electrons are located throughout the positively charged material
b) the electrons travel in definite paths around a small, positively charged nucleus
c) there are regions around the nucleus where electrons are likely to be found
d) the center of the atom is positively charged and dense, and electrons travel around it but in no exact arrangement

An atom has 5 protons, 6 neutrons, and 5 electrons. What is the atom's mass number
a) 5
b) 10
c) 11
d) 16

When a strong base is dissolved in water, it produces a solution containing high concentration of
a) hydrogen ions
b) hydronium ions
c) hydroxide ions
d) ammonium ions

Smog can be considered a colloid when it is composed of
a) particles too small to settle out
b) a cloudy suspension
c) a chemical compound
d) a pure element

Heredity, experience, and adaptation to the environment
a) hinder a species from adapting further
b) negatively affects the abiotic factors in an environment
c) prohibits an organism from changing
d) determines an organism's behavior

The process by which organisms that are better adapted to their environment survive and reproduce more successfully than less well adapted organisms do is called
a) natural selection
b) fossilization
c) extinction
d) selective breeding

Organisms have changed over time. Scientists have proven this fact by
a) examining and comparing fossil evidence
b) discovering all the organisms that have ever lived on Earth
c) finding that organisms of the past are identical to those living today
d) proving that there are more organisms with bones than without

Which of the following is not a prey adaptation?
a) camouflage
b) chemical defenses
c) parasitism
d) warning coloration

What does a dichotomous key use to help a scientist identify organisms?
a) a series of statements
b) a graph of typical data
c) a series of photographs
d) a chart with circles and arrows

What do scientists use branching diagrams for?
a) to help classify animals
b) to determine which animals can breed
c) to show how humans are related to plants
d) to show the family tree of a species

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