chapter 4 Flashcards
(20 cards)
Why are most cells small?
surface area-to-volume ratio is important and cells must remain small
Which one of the following statements about the Cell Theory is not true?
all living things are multicellular
Prokaryotic cells sometimes possess short appendages called _________ that allow them to attach to surfaces.
fimbriae
Prokaryotic cells lack:
a nucleus
Which one of the following organelles is NOT part of the endomembrane system?
mitochondrion
Only plant cells contain ______ while only animal cells contain __________.
chloroplasts; lysosomes
The nucleus can be defined as:
containing the genetic information of the cell
Chromatin is composed of:
DNA, RNA, and protein
The endoplasmic reticulum functions
the site of protein synthesis
The open space at the center of the endoplasmic reticulum (ER) is called the _________.
lumen
A main function of the Golgi apparatus is:
protein and lipid modification and sorting
Vesicles from the ER are received by the ________ face of the Golgi apparatus.
cis
Lysosomes are produced by which organelle?
Golgi apparatus
The primary function of peroxisomes is:
breakdown of fatty acids
Vacuoles can function in _______ and ____________ in the cell.
storage and water removal
Organelles in the endomembrane system communicate via:
vesicles
The disk-like sacs found within the chloroplasts are called:
Correct answer: thylakoids
Collectively, mitochondria and chloroplasts are known as:
energy-related organelles
Microtubule assembly is regulated by the ____________.
centrosome
Cilia and flagella both originate from:
basal bodies
