Unit 2
Fluid-filled sacs that may store food or water in cells are called?
vacuoles
These contain enzymes and are the main organelles of intracellular digestion. They break down and recycle cell parts if they become damaged.
lysosomes
This organelle is responsible for the breakdown of glucose and the generation of ATP.
mitochondria
Cell part responsible for maintaining cell shape, internal organization, and cell movements is the ?
cytoskeleton
The work of Schleiden can be summarized by saying that?
All plants are made of cells
Which organelle(s) contain DNA?
both nuclei and mitochondria
Which of these are part of the endomembrane system?
mitochondria, centriole, golgi body, rough endoplasmic reticulum, cell membrane
golgi body, rough endoplasmic reticulum, cell membrane
Studying a picture of a cell taken with an electron microscope, yo ufind that the cell has no nucleus and no mitochondria, but it does have a cell membrane and a cell wall. You conclude that the cell is probably a/an
prokaryote
Viruses do not contain DNA or RNA. True or false?
False
The movements of water across a selectively permeable membrane from an area of high concentration to an area of low concentration is called ?
osmosis
If a cell lives in a hypotonic or hypertonic environment, they must have special adaptations for water balance. An example of this is the contractile vacuole found in paramecium. The adaptation is called ?
osmoregulation
The pili allow prokaryotic cells to
grow
contain the genetic information
move in aquatic environments
none of these
all of these
none of these
Which objective should you always start with when looking at slides?
4x (scanning)
Which of the following contain RNA and/or DNA?
bacteria, virus, animal cells, plant cell, protist
bacteria, virus, animal cells, plant cell, protist
Which of these are responsible for the contractile ring used to pinch the cell into two during cell division?
microfilaments
Transport vesicles are produced by the
rough endoplasmic reticulum
Facilitated diffusion?
requires a transmembrane (integral) protein
requires ATP
can move molecules against a concentration gradient
All of the above
requires a transmembrane (integral) protein
Which of these have chloroplasts?
plants
Where can one find ribosomes in an eukaryotic cell?
rough endoplasmic reticulum
This organelle detoxifies the cell, stores calcium, and breaks down carbohydrates.
smooth endoplasmic reticulum
Which of these has a mitochondria?
Plant cell, animal cell, fungi, bacteria
Plant cell, animal cell, fungi
The ? the concentration gradient the faster the rate of diffusion will occur.
larger
Which of these facts correctly describe(s) the Na/K pump?
requires ATP
counter transport
The passive movement of a substance (not water) down its concentration gradient is termed:
diffusion
You and a friend are on a boat lost at sea and have not had any water in days. Your buddy decides to drink the salt water. Is this a good idea?
No. This is a hypertonic solution and your cells will crenate.