Which of the following is/are not found in a prokaryotic cell?
mitochondria
Resolution of a microscope is
the sharpness or clarity of an image
Which of the following is not a similarity among the nucleus, chloroplasts, and mitochondria?
They are derived from the endoplasmic reticulum system
The protons in the nuclear envelope provide for the movement of
proteins into the nucleus, ribosomal subunits out of the nucleus, mRNA out of the nucleus, and signal molecules into the nucleus
The ultrastructure of a chroloplast could be seen with the best resolution using
transmission electron microscopy
Which is incorrectly paired with its function?
lysosome-food sac formed by phagocytosis
The cytoskeleton is composed of which type of molecule?
protein
A growing plant elongates primarily by
taking up water into its central vacuole
The innermost portion of the cell wall of a plant cell specialized for support is the
secondary cell wall
Contractile elements of muscle cells are
actin filaments (microfilaments)
Microtubules are components of all of the following except
the pinching apart of the cytoplasm in animal cell division
What is probably the most common route for membrane flow in the endomembrane system?
rough ER--->transport vesicles--->Golgi--->vesicles--->plasma membrane
Proteins to be used within the cytosol are generally synthesized
by free ribosomes
Plasmodesmata in plant cells are similar in function to
gap junctions
In an animal cell fractionation procedure, the first pellet performed would most likely contain
nuclei
In what cell would you expect to find the most tight junctions?
epithelial cell lining digestive tract
In what cell would you expect to find the most lysosome?
macrophage (white blood cells) that engulfs bacteria
In what cell would you expect to find the most smooth endoplasmic reticulum?
ovarian cell that produces estrogen (a steroid hormone)
In what cell would you expect to find the most bound ribosomes?
pancreatic cell that manufactures digestive enzymes
In what cell would you expect to find the most mitochondria?
muscle cell in the thigh muscle of a long-distance runner
What transports membranes and products to various locations?
transport vesicle
What are the infoldings of the inner mitochondrial membrane with attached enzymes?
cristae
What consists of collagen, proteoglycans, and fibronectins?
extracellular matrix
What is specialized metabolic compartments with enzymes that transfer hydrogen to oxygen, producing H2O2?
peroxisomes
What are the stacks of flattened sacs inside chloroplasts?
grana
What is the anchoring structure for cilia and flagella?
basal body
What is the semifluid membrane between nucleus and plasma membrane?
cytosol