Questions with Verified Answers
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 most
likely seeing? - ANSWERSChloroplasts
Electrons are found... - ANSWERSIn one or more shells that surround the atom's
nucleus
The figure below represents the steps in the scientific method. Dr. JoAnn 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 contention represent? -
ANSWERSHypothesis
Ionic bonds... - ANSWERSForm between atoms that develop opposite charges
A molecule composed of amino acids is a... - ANSWERSprotein
The smallest unit of a chemical element that displays the properties of that element is
a(n)... - ANSWERSatom
Based on the illustration below, it could be predicted that ice floats on liquid water
because... - ANSWERSthe 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? - ANSWERSAll of the above
The smooth ER... - ANSWERSis the site where lipids destined for other cellular
compartments are manufactured
The sugar glucose has an important role... - ANSWERSin short-term energy storage
Once supported by a predictable experimental outcome, a scientific hypothesis... -
ANSWERSstill cannot be considered to have been proven true
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. - ANSWERS3
, DNA is one of the features common to all known forms of life; - ANSWERSit is the
blueprint that guides the growth, development, behavior, and reproduction of all
organisms.
How many different elements would be needed to construct a molecule of
C8H10N4O2? - ANSWERS4
Which of the following statements is false? - ANSWERSEukaryotes use PROTEINS as
the hereditary genetic material.
Although it seems contradictory, science cannot prove a hypothesis to be true. This is
because... - ANSWERSfuture 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? - ANSWERSAll living
organisms use DNA as their hereditary material
An atom of the element with the atomic number 11 (which can form an ion) ALWAYS
contains 11... - ANSWERSprotons
An oil is a lipid that is ____ at room temperature. - ANSWERSliquid
Chemists often represent the structure of atoms using p, n, and e to indicate the number
of protons, neutrons, and electrons; which atom would have an atomic weight of 30? -
ANSWERS15p, 15n, 15 e
Oil and water do not mix together well because... - ANSWERSwater is polar and oil is
nonpolar
Which of the following combinations of atoms would form ionic bonds? - ANSWERSNa+
and Cl-
Which of the following is NOT a role of fatty acids in living organisms? -
ANSWERSStorage of genetic information
Which of the following statements is true? - ANSWERSThe scientific method can help
people make informed medical and environmental decisions.
The boundary structure that physically defines a cell is the... - ANSWERSplasma
membrane
Which of the following would be the best analogy for the function of the Golgi
apparatus? - ANSWERSa worker in a factory who places labels on products and then
packs them into a shipping box