Final Review Flashcards
True or False: Chloroplasts make energy for the plant cell
False
True or false: Humans are able to digest cellulose found in plant cell walls.
False
True or False: White blood cells are involved in immune response to fight off invading viruses and bacteria. This means that these cells should have a large quantity of lysosomes.
True
True/False: Cillia and flagella can be used for movement or mobility in cells
True
Will animals EVER have cell walls?
No
All living things are made up of
Cells
You find a cell which contains a nucleus. The most specific name you can give this cell is:________
Eukaryotic cell
In a chloroplast the stacks of membranous sacs are called ______
Grana
Because cells have a watery environment from both inside and outside, the polar ends of the phospholipids in the plasma membrane form ____ layers
Double
A plasma membrane is made up of a(n)_______
Lipid bilayer
Folded membranes are an advantage to a cell because
Cell processes can be more efficient, the membranes provide a large surface are, and the membranes form interconnected compartments.
Surface area-to-volume ratios indicate
As cells get larger, their surface larger but at a slower rate than volume.
Compared with a eukaryotic cell, a prokaryotic cell
Does not have a nucleus
Which structure regulates passage of molecules into and out of cells?
Plasma membrane
The _________ is surrounded by a double membrane and carries the coding that determines protein synthesis.
Nucleus
Is the nucleolus found in the cytoplasm?
No
If a cell lacked ribosomes, it would NOT be able to
Synthesize proteins.
The ______ will produce vesicles that can fuse with the plasma membrane.
Golgi apparatus
The __________ is involved in collecting, sorting and distribution of molecules.
Golgi apparatus
The __________ will store water, pigments, and toxins in plant cells.
Vacuole
Both plant and animal cells have mitochondria because they both
Need ATP for energy
Which organelle will use up oxygen and give off carbon dioxide and water?
Mitochondria
Which organelle will give off oxygen and use up carbon dioxide?
Chloroplasts
Thylakoids and cristae are respectively structures of
Chloroplasts and mitochondria
A plasma membrane is made up of a(n)
Lipid bilayer
Ovarian cells that produce estrogen would have a high number of
Smooth ER
Muscle cells in the thigh of a long distance runner would have a high number of
Mitochondria
White blood cells that engulf bacteria would have a large number of which organelle?
Lysosome
You are told that the cells on a microscope slide are plant, animal, or bacterial. You look at them through a microscope and see cell walls and membrane-bound organelles. You conclude correctly that the cells
Are plant cells
The golgi apparatus
Stores, modifies, and packages proteins.
The part of the cell where lipids are synthesized is called the
Smooth ER
In a cell, the sites of protein synthesis are the
Ribosomes
The movement of materials into and out of the cells is controlled by the
Plasma membrane
Ina cell, the breakdown of molecules in order to create energy in the form of ATP occurs in the_____
Mitochondria
T/F: When a cell is placed in an isotonic solution water will no longer move into or out of the cell
False
T/F: When you place sugar on strawberries that have been cut up for shortcake the sugar creates a hypotonic solution which is why the strawberries get juicy
False
T/F: Vegetables are regularly sprayed with a mist of water at the grocery store because the water is hypotonic to the cells of the produce and it keeps the central vacuoles full of water.
True
T/F: Plasmolysis is the term that is used to refer to the shriveling of the plant cell membrane
True
T/F: Aquaporins allow water to move into and out of a cell at a faster rate than osmosis can allow
True
A plasma membrane is made up of a(n)
Phospholipid bilayer
Water moves into a cell placed in a _____ solution
Hypotonic
Water moves out of a cell if the cell is placed in a ______ solution.
Hypertonic
A cell moves particles from a area of lower concentration to a region of higher concentration by
Active transport
If a cell is placed in salt water, water leaves the cell by
Osmosis
Which type of transport requires ATP?
Active transport
T/F: Small uncharged molecules do not pass easily through a cell membrane.
False
Permeability refers to
The extent to which a membrane allows a substance to pass through.
An SMA student sitting on the back row opened a bottle of foul-smelling perfume and dabbed it on her wrists. One-by-one (beginning in the back of the room) the students began to cough due to the foul smell. This phenomena was due to
Diffusion
When water enters a plant cell
The vacuole becomes enlarged, and the organelles are forced against a cell wall.
An isotonic solution means that the solute concentration outside the cell
Is the same as inside the cell
When a plant cell is placed in a hypotonic solution, the cell wall prevents
The cell from bursting
Most of the functions of a cell membrane, including transport and enzymatic function, are performed by
Proteins
