EXERCISES, LESSON 2
REQUIREMENT. The following exercises are to be answered by completing the
After you have completed all the exercises, turn to "Solutions to Exercises" at the
end of the lesson, and check your answers.
All substances that enter or leave a cell must in pass through the cell _________.
Resembling a circulatory system for the individual cell is the e____________
r__________. Granular particles concerned with protein synthesis are the
r_________s. Spaces or cavities which serve functions at the cellular level such as
digestion, respiration, excretion, and storage are the v___________s. A portion of the
endoplasmic reticulum that aids in the final preparation of certain proteins and
mucus-like substances is the _________ complex. The "powerhouses" of the cell are
the _________________a. Playing a major role in cell division are the two
Each chromosome has a set of specific ________s. These determine the
p______ical and c_______ical characteristics of the body.
Adenosine triphosphate (ATP) provides _________y for cellular processes such
as ac______e tr________t of substances across ___________s, synthesis of chemical
c_________s for the body, mechanical _______k (such as muscle ____________n).
When an ATP molecule provides ________y for such a process, it loses a ________e
radical and becomes _______. Then, the cycle begins again as ADP is converted
into _________ within the _______________a.
The major component of living substances is _____________. The fluid within
the cell is called _______________ fluid. Located among the cells is the
____________l fluid. In the circulatory systems, fluids serve as a v______e. Together,
the interstitial and circulating fluids are called e____________ fluid.
Certain chemicals dissociate into ions when they are dissolved. These
chemicals are called _______________s. For good health, these chemicals must be in
. In other words, each fluid compartment must have a certain c
of a given electrolyte.