Ch. 3 Flashcards
A cell that produces many proteins for secretion would have large numbers of:
a. rough ER and Golgi apparatus.
b. lysosomes and Golgi apparatus.
c. Golgi apparatus and microvilli.
d. ribosomes and centrioles.
e. mitochondria and cilia.
rough ER and Golgi apparatus.
A DNA base sequence is ATGCCG. The sequence of bases in a strand of mRNA transcribed from this sequence of bases in DNA would be:
a. T A C G G C.
b. U T C G G U.
c. U A C G G C.
d. A U G C C G.
e. T A G G G G
U A C G G C.
Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution “B”:
a. hypotonic solution
b. hypertonic solution
c. isotonic solution
d. hemolyzed
e. crenated
crenated (shrink)
Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution “C”?
a. hypotonic solution
b. hypertonic solution
c. isotonic solution
d. lyzed
e. crenated
lyzed
Cells undergo a series of changes during their life-span which is known as
a. cell division
b. DNA inforation
c. cell cycle
d. growth phase
cell cycle
Answer these questions about chromosome structure. What does “A” represent?
a. chromatid
b. proteins
c. chromosomes
d. centromere
e. chromatin
chromosome
Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution “A” relative to the RBC?
a. hypotonic solution
b. hypertonic solution
c. isotonic solution
d. hemolyzed
e. crenated
isotonic solution
Answer these questions about chromosome structure. What does “C” repressent?
a. chromatid
b. proteins
c. chromosomes
d. centromere
e. chromatin
centromere
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of “D”?
directs cellular activities, contains DNA
Active transport…
requires ATP
Endoplasmic reticulum with ribosomes attached to it is called
rough ER
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of “B”?
major site of ATP synthesis when oxygen is available
Chromosome pairs are called
homologous pairs
Nuecleoli
produce ribosomal subunits
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of “E”?
contains digestive enzymes
Messenger RNA
is synthesized when a portion of a DNA molecule is transcribed
Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution “C” relative to the RBC?
hypotonic solution
A protein that is converted to an active enzyme is
proenzyme
DNA synthesis occurs during
the S phase of interphase
A cell that breaks down and recycles proteins would have a large numbers
proteosomes
A cell can meet increased energy demands by an increase in
the number of mitochondria
Absence of a cytoskeleton might affect
cell shape
Down Syndrome is an example of an aneuploidy called
trisomy 21
answer these questions about chromosome structure. “What does “D” represent
chromatid N/A
In simple diffusion, the rate at which a solute passes through a membrane depends on all of the following EXCEPT the
number of carriers in the membrane
In prophase
the chromosomes condense, shorten and thicken
Cytoplasm is found
outside the nucleus but inside the plasma membrane
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of “C”
site of protein synthesis N/A
Membrane-bound receptors
have their receptors sites on the outer surface of the plasma membrane
Mitochondria:
a. contains DNA.
have inner and outer membranes.
b. have inner folds called cristae.
c. are the cell’s power plants.
d. all of the above
all of the above
A particular membrane transport process exhibits saturation, uses carrier molecules, but does NOT require ATP. The process is probably
facilitated diffusion
Organelles
vary in number and type depending on cell function
A cell uses centrioles in the process
cell division
A DNA nucleotides sequences that signals the beginning of a gene is called a
promoter
Glycolipids
carbohydrates
0.9% NaCl solution (saline) is isotonic to a cell, while seawater is
hypertonic to the cell
Cell dispose of worn-out organelles by a process called
autophagy
Chromosomes that are NOT associated with sex determination are known as
autosomes
A display of the chromosomes of a somatic cell during metaphase of mitosis is the
karyotype
Genes on the X chromosomes are
X-linked
Human somatic cells contain _______ chromosomes, while gametic cells contain _______ chromosomes.
46; 23
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of “A”?
outer boundary of cell, controls entry and exit of substances
In _______, ions or molecules move in opposite directions.
antiport
Endocytosis
is the bulk uptake of material through the plasma membrane by vesicle formation.
Answer these questions about chromosome structure. What does “B” represent?
chromatin N/A
Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution “B” relative to the RBC?
hypertonic solution
Microtubules
provide structure and support of the cytoplasm
Membrane protein that extends into the lipid bilayer are called
integral proteins
Before cell division occurs, DNA in the nucleus is condensed to form
chromatin
In which part of the cell cycle do chromosomes align along the equator?
metaphase
