SCRIPT 2026 PRACTICE SOLUTIONS
GRADED A+
● Movement. Answer: Muscle cells can generate forces that produce
motion. Muscles that are attached to bones produce limb movements,
whereas those muscles that enclose hollow tubes or cavities move or
empty contents when they contract (e.g., the colon).
● Conductivity. Answer: Conduction as a response to a stimulus is
manifested by a wave of excitation, an electrical potential that passes
along the surface of the cell to reach its other parts. Conductivity is the
chief function of nerve cells.
● Metabolic Absorption. Answer: All cells can take in and use nutrients
and other substances from their surroundings.
● Secretion. Answer: Certain cells, such as mucous gland cells, can
synthesize new substances from substances they absorb and then secrete
the new substances to serve as needed elsewhere.
● Excretion. Answer: All cells can rid themselves of waste products
resulting from the metabolic breakdown of nutrients. Membrane-bound
sacs (lysosomes) within cells contain enzymes that break down, or
, digest, large molecules, turning them into waste products that are
released from the cell.
● Respiration. Answer: Cells absorb oxygen, which is used to transform
nutrients into energy in the form of adenosine triphosphate (ATP).
Cellular respiration, or oxidation, occurs in organelles called
mitochondria.
● Reproduction. Answer: Tissue growth occurs as cells enlarge and
reproduce themselves. Even without growth, tissue maintenance requires
that new cells be produced to replace cells that are lost normally through
cellular death. Not all cells are capable of continuous division (see
Chapter 4).
● Communication. Answer: Communication is vital for cells to survive
as a society of cells. Appropriate communication allows the maintenance
of a dynamic steady state.
● Three Cellular Components of the Eukayrotic cell consists of.
Answer: outer membrane: which is called the plasma membrane or
plasmalemma.
A "fluid filling" called cytoplasm.
The "organs" of the cell called organelles(membrane bound intracellular)
among them the nucleus.