Cells and tissue quiz
Cellular material located outside the nucleus yet inside the plasma membrane is the ________.
Cytoplasm
________, a type of cell junction, anchor adjacent cells together and prevent cells from being pulled apart.
Desmosomes
Diffusion occurs when molecules move against their concentration gradients.
False
Ribosomes are found attached to smooth endoplasmic reticulum or freely in the cytoplasm
False
The preparation of secretory vesicles for export from the cell is the responsibility of the ________.
Golgi apparatus
A solution that contains fewer solutes than the cell is ________ to the cell.
Hypotonic
A cell is isotonic to the surrounding 4% dextrose solution. If the cell is moved to a 6% dextrose solution, then predict what will happen to the cell.
The cell will shrink.
Active processes, such as solute pumping, use ATP.
True
What is required for osmosis to occur?
aquaporins
The structural and functional unit of all living things is the ________.
cell
What is required for diffusion to occur?
concentration gradient
Passive processes that move substances across membranes ________.
do not require ATP
Which of the following processes require the use of protein carrier molecules?
facilitated diffusion and solute pumping
Phospholipid tails are hydrophilic and are attracted to water.
false
Which of the following substances must travel across a membrane via facilitated diffusion?
gluclose
The cell shown in Figure 3.2 has been placed into a(n) ________ solution.
hypotonic
The organelle that contains enzymes produced by ribosomes and packaged by the Golgi apparatus is the ________.
lysosome
The passive process that involves the movement of water through aquaporins is ________.
osmosis
What separates the intracellular fluid from the extracellular fluid?
plasma membrane
What assists the movement of substances by facilitated diffusion?
protein carrier or channel
Looking into a microscope, you notice cells swimming, propelled by a long tail. What cell 5) structure must these cells have in order to be mobile?
flagella
Which of the following is NOT considered a cytoplasmic organelle?
flagellum
Nutrients and ions can pass directly from cell to cell through special membrane junctions known as ________.
gap (communicating) junctions
The phospholipid tails are ________, which make the plasma membrane impermeable to water.
hydrophobic
The organelle responsible for making the majority of ATP in a cell is the ________.
mitochondrion
What are the three basic parts or regions of a cell?
nucleus, cytoplasm, and plasma membrane
The specialized cellular compartments within the cytosol of the cell are collectively called
organelles
By what endocytosis process do some white blood cells engulf bacteria?
phagocytosis
What are two types of endocytosis?
phagocytosis and pinocytosis
Osmosis takes place when water goes from an area of low water concentration to an area of high water concentration.
True
The plasma membrane is a selectively permeable barrier.
True
The three major components of the cytoplasm are the ________.
cytosol, organelles, and inclusions
The membrane connections that prevent the leaking of fluid between cells are called ________.
tight junctions
Which of the following is NOT a structural component of the nucleus?
Golgi apparatus
Which of the following statements is NOT part of the cell theory?
The human body is composed of 50 to 100 trillion cells.