CYTOLOGY 24
Which of these are prokaryotes?
bacteriae
protozoa
viruses
red algae
Which of the following organelles is associated with the hydrolysis of food in a cell?
lysosome
ribosome
Golgi body
centriole
You would expect a cell with an extensive Golgi apparatus to
make a lot of ATP
secrete a lot of material
move actively
perform photosynthesis
Which of the following correctly matches an organelle with its function?
mitochondrion . . . photosynthesis
nucleus . . . cellular respiration
ribosome . . . manufacture of protein
lysosome . . . movement
A cell has mitochondria, ribosomes, smooth and rough ER, and other parts. Based on
this information, it could not be
a cell from a pine tree
a grasshopper cell
a yeast (fungus) cell
a bacterium
Which of the following clues would tell you whether a cell is prokaryotic or
eukaryotic?
the presence or absence of a rigid cell wall
whether or not the cell is partitioned by internal membranes
the presence or absence of ribosomes
whether or not the cell contains DNA
Which of the following cell organelles does not contain DNA?
chloroplast
nucleus
ribosome
mitochondrion
Which of the following cells is haploid (contains half the number of chromosomes)?
ovum
cell of an embryo
red blood cell
skin cell
For active transport to occur, the following must be present
carrier proteins, ATP, cell membrane
carrier proteins, ADP, cell membrane
ATP, cell membrane, vacuole
cell membrane, water, ATP
Which of the following are all passive processes?
diffusion, osmosis, active transport
diffusion, osmosis, facilitated diffusion
diffusion, active transport, ventilation
active transport, movement, osmosis
Hydras, earthworms, grasshoppers, and humans are classified in the same
genus
species
phylum
kingdom
The presence of cilia, an oral groove, and food vacuoles, and the absence of
chloroplasts in a unicellular organism indicate that the organism carries on
sexual reproduction
autotrophic nutrition
extracellular digestion
heterotrophic nutrition
Which structure includes all of the others?
nucleolus
nucleus
chromosomes
genes
Most cell membranes are composed principally of
DNA and ATP
proteins and lipids
chitin and starch
nucleotides and amino acids
Which statement best describes a difference between cell division in plant and animal
cells?
In animal cells, cytoplasmic division is accomplished by a partition or cell plate
In plant cells, cytoplasmic division is accomplished by a cleavage furrow.
In animal cells, centrosomes have a distinct role in spindle formation, while in plant
cells mitotic spindle is formed without centrosomes
In animal cells, replication of chromosomes occurs during the interphase, while in
plant cells replication occurs during metaphase
Which structure is usually present only in animal cells?
vacuole
cell wall
nucleus
centriole
Sodium ions are "pumped" from a region of lower concentration to a region of higher
concentration in the nerve cells of humans. This process is an example of
diffusion
passive transport
osmosis
active transport
Who discovered the structure of DNA?
Darwin and Wallace.
Von Baer and Haeckel
Hardy and Weinberg
Watson and Crick
The monomer of a nucleic acids is:
amino acid
nucleotide
monosaccharide
nitrogenous base
Which of the following organelles is associated with the protein synthesis?
lysosome
ribosome
Golgi body
centriole
The monomers of proteins are:
amino acids
nucleotides
monosaccharides
nitrogenous bases
Which of these is a eukaryote?
protozoa
virus
bacteria
blue-green alga
Chromosomes are situated at the equator plain of the cell during the cell cycle in:
interphase
prophase
metaphase
telophase
Among other differences, eukaryotic DNA differs from prokaryotic DNA in that:
Prokaryotic DNA contains ribose instead of deoxyribose
Prokaryotic DNA is usually double stranded
Eukaryotic DNA has histones which help to stabilize and package the nucleic acid
Prokaryotic DNA contains inactive histones