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MTU BL1020 Exam #1 With Verified Solutions
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MTU BL1020 Exam #1 WithVerified Solutions
The semi-fluid matrix that surrounds organelles in a cell is called the:
A. stroma
B. cytoplasm
C. ribosome
D. nucleoplasm - Answer Cytoplasm
A distinctive feature of eukaryotes is the organization of tightly packaged chromosomal
DNA with proteins into a membrane-bound structure called a:
A. nucleolus.
B. cell.
C. nucleus.
D. plasma membrane. - Answer Nucleus
The organelle that can collect, package, modify, and transport molecules is called the:
A. mitochondria.
B. plasma membrane.
C. vesicle.
D. Golgi apparatus. - Answer Golgi apparatus
The evolutionary process that created chloroplasts and mitochondria is:
A. punctuated equilibrium.
B. endosymbiosis.
C. evolution.
D. symbiosis. - Answer endosymbiosis
Microfilaments such as actin, microtubules, and the intermediate filaments form the
cell-supporting structure called the:
A. cytoplasm.
,B. cytoskeleton.
C. nucleus.
D. plasma membrane. - Answer cytoskeleton
Small cells function more effectively, because as cells become larger their surface area
to volume ratio:
A. stays the same.
B. is squared.
C. increases.
D. is cubed.
E. decreases. - Answer decreases
Organelles that breakdown hydrogen peroxide into water and oxygen are:
A. vacuoles.
B. lysosomes.
C. liposomes.
D. peroxisomes.
E. plastids. - Answer peroxisomes
Who first described cells?
A. Linnaeus
B. Golgi
C. Hooke
D. Leeuwenhoek
E. Darwin - Answer Hooke
Schleiden and Schwann stated the "cell theory," which in its modern form says:
A. all cells will arise spontaneously, all cells require oxygen and all cells are composed
of one or more cells.
B. all organisms are composed of one or more cells, all cells are the smallest living
things and all cells arise by division of other cells.
C. all organisms are composed of one or more cells, all cells require oxygen and all cells
arise by division of other cells.
,D. all organisms are composed of one or more cells, all cells arise spontaneously and all
cells vary in size and shape. - Answer all organisms are composed of one or more cells,
all cells are the smallest living things, and all cells arise by division of other cells
. The "X" shaped chromosomal hereditary material can be packaged in this organelle in
eukaryotic cells but not in prokaryotic cells. This organelle is the:
A. ribosomes.
B. nucleoid.
C. nucleus.
D. mitochondria.
E. chloroplast. - Answer Nucleus
Prokaryotic cell movement is attributed to:
A. pili.
B. ribosomes.
C. cytoskeleton proteins.
D. flagella.
E. capsules. - Answer flagella
Plant cells often have a large membrane-bound sac that is used for storing water and
other substances called a:
A. central vacuole.
B. centriole.
C. nucleus.
D. Golgi body.
E. chloroplast. - Answer central vacuole
The cytoplasmic space in eukaryotic cells is occupied by many diverse
membrane-bound structures with specific cellular functions called:
A. organelles.
B. cilia.
C. flagella.
D. receptors.
, E. chromosomes. - Answer organelles
Ribosomes are made up of:
A. only protein molecules.
B. only RNA molecules.
C. DNA and RNA.
D. protein and RNA.
E. only DNA molecules. - Answer protein and RNA
The eukaryotic organelle that is directly involved in the transport of proteins
synthesized on the surface of the rough ER is called the:
A. mitochondrion.
B. vacuole.
C. smooth ER.
D. Golgi body.
E. nucleus. - Answer Golgi body
In eukaryotes, mitochondria are the organelles primarily involved in:
A. phospholipid assembly.
B. export of enzymes.
C. energy release/capture.
D. lipid synthesis.
E. protein synthesis. - Answer energy release/ capture
The nucleolus is the site of:
A. chromosome replication.
B. uncoiling and unraveling of chromosomes.
C. lipid synthesis.
D. protein synthesis.
E. ribosome assembly. - Answer ribosome assembly
Chromosomes can be condensed into compact structures, visible with the light
microscope, but usually only:
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