Exam Questions and Verified
Answers GRADED A+!
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When looking through a light microscope at a plant leaf, you notice small green
organelles moving around in the cytoplasm of every cell. What organelle are you
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most likely seeing? - ANSWER Chloroplasts
Electrons are found... - ANSWER In one or more shells that surround the
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atom's nucleus
The figure below represents the steps in the scientific method. Dr. JoAnn
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Burkholder believed the wrong stains of "Pfiesteria" were used by independent
laboratories looking for fish-killing toxin. What step in the figure above would her
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contention represent? - ANSWER Hypothesis
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Ionic bonds... - ANSWER Form between atoms that develop opposite
charges
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A molecule composed of amino acids is a... - ANSWER protein
The smallest unit of a chemical element that displays the properties of that
element is a(n)... - ANSWER atom
Based on the illustration below, it could be predicted that ice floats on liquid water
because... - ANSWER the distance between water molecules in ice is greater
than in liquid
, Homeostasis is the ability to detect and correct disturbances that develop within
an organism; which of the following illustrates homeostasis? - ANSWER All of
the above
The smooth ER... - ANSWER is the site where lipids destined for other
cellular compartments are manufactured
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The sugar glucose has an important role... - ANSWER in short-term energy
storage
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Once supported by a predictable experimental outcome, a scientific hypothesis...
- ANSWER still cannot be considered to have been proven true
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The outer electron shell of a nitrogen atom can hold up to eight electrons, but
contains only five. As a result, nitrogen can form_____covalent bonds. -
ANSWER 3
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DNA is one of the features common to all known forms of life; - ANSWER it is
the blueprint that guides the growth, development, behavior, and reproduction of
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all organisms.
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How many different elements would be needed to construct a molecule of
C8H10N4O2? - ANSWER 4
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Which of the following statements is false? - ANSWER Eukaryotes use
PROTEINS as the hereditary genetic material.
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Although it seems contradictory, science cannot prove a hypothesis to be true.
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This is because... - ANSWER future experiments or discoveries may provide
data that refutes the hypothesis
Consider each of the following true statements; which statement supports the
theory that all living organisms descended from one common ancestor? -
ANSWER All living organisms use DNA as their hereditary material