HESI BIOLOGY 2026 QUESTIONS AND
ANSWERS | A+ GRADED | WITH
EXPERT SOLUTIONS
nucleus - correct answer-a part of the cell containing DNA and
RNA and responsible for growth and reproduction
ribosomes - correct answer-non membrane bounded organelles
responsible for protein synthesis
endoplasmic reticlum - correct answer-a system of membranes
that is found in a cell's cytoplasm and that assists in the
production, processing, and transport of proteins and in the
production of lipids
golgi bodies - correct answer-They receive proteins and other
newlly formed materials from the ER, package them, and
distribute them to other parts of the cell
, Page | 2
lysosomes - correct answer-filled with enzymes used to break
down food into particles that can be used
vacuoles - correct answer-saclike structures that store materials
such as water, salts, proteins, and carbohydrates in the cytoplasm
mitochondia - correct answer-"power plants" of the cell; contain
enzymes and generators that break down food molecules and use
the energy released to produce ATP
chloroplasts - correct answer-organelles that capture the energy
from sunlight and convert it into chemical energy in a process
called photosynthesis
cytoskeleton - correct answer-a microscopic network of actin
filaments and microtubules in the cytoplasm of many living cells
that gives the cell shape and coherence
cilia - correct answer-short structures projecting from a cell and
containing bundles of microtubules that move a cell through its
surroundings or move fluid over the cell's surface
, Page | 3
cell membrane - correct answer-thin, flexible barrier around a cell,
regulates what enters and leaves the cell
cell wall - correct answer-a rigid layer of nonliving material that
surrounds the cells of plants and some other organisms
diffusion - correct answer-process by which molecules tend to
move from an area where they are more concentrated to an area
where they are less concentrated
osmosis - correct answer-diffusion of water
isotonic - correct answer-(used of solutions) having the same or
equal osmotic pressure
hypotonic - correct answer-describes a solution whose solute
concentration is lower than the solute concentration inside a cell