abubucellone.one Flashcards
Cells have the capability of synthesizing water during metabolism.
-True
The lysosomes within a cell contain hydrolytic enzymes capable of digesting particles within the cells.
True
Vesicles differ from vacuoles in that vesicles are usually produced for the purpose of causing something to leave the cell.
-False
Membranes are called selectively permeable because they allow most substances to enter the cell.
-False
The selectively permeability of a cell membrane functions under active transport mechanisms.
-True
Chromosomes line up in the middle of the cell. -
Metaphase
Chromosomes return to chromatin; nuclear membranes form; cleavage furrow begins.
-Telophase
Chromatin condenses into chromosomes, nuclear envelope disappears, spindle fibers start to form.
-Prophase
Phase before mitosis; growth of cell and preparation for division.
-Interphase
Cells use up to 40% of their daily energy expenditure engaged in what important process?
-Active Transport
By which process does a glucose molecule move through a cell membrane protein carrier from a region of greater concentration to one of lower concentration to one of lower concentration.
-Facilitated Diffusion
It is the passage of WATER from a region of high water concentration through a semipermeable membrane to a region of low water concentration.
-Osmosis
The movement of particles from an area of higher to lower concentration is called __.
-Diffusion
The cell is the basic structure/functional unit common to all living organisms
-TRUE
In simple diffusion, molecules move from an area of __ concentration to an area of __ concentration
-High, Low
Proteins do not pass through plasma membranes because
-They are very large molecules
A (n)__ solution has the same concentration of water as the cell placed in the solution
-Isotonic
The lysosomes contains__ enzymes
-Digestive
Epithelial tissue is characterized by
-Tightly packed cells
The semi-fluid matrix that surrounds organelles in a cell is called the
-Cytoplasm
If the temperature is increased,
-The rate of diffusion increases
Which of the ff represents the correct order of the phases of mitosis
-PMAT
Mitosis & cytoplasmic division result in the formation of 2 genetically identical cells
True
If a sperm cell contains 8 chromosomes, it comes from an animal that has__ chromosome
16
Ribosomes are the site of
-Protein Synthesis
Mitochondria can be found in the cells of
- Plants
- Animals
The fluid material located outside of the nucleus is the
-Cytoplasm
What are the 2 main types of cells?
- Prokaryotes
- Eukaryotes
-Eukaryotes
Which of the following factors would decrease the rate of diffusion?
- Increased Molecular Weight
- Smaller Concentration Gradient
- Denser Media
Which of the following factors would increase the rate of diffusion?
- Decreased molecular size
- Larger Concentration gradient
- Thinner Media
A defining characteristic that distinguishes prokaryotic and eukaryotic organisms is the lack of a cell membrane in prokaryotes.
FALSE
Which of the following are found in both plant and animal cells?
- Mitochondria
- Golgi Complexes
- Endoplasmic Reticulum
Which of the following is located outside of the cell membrane and provides structural support to plant and prokaryotic cells?
-Cell wall
The endoplasmic reticulum
-Is where digestive enzymes are stored
Did diffusion across the membrane occur for the iodine solution?
-YES
Did diffusion across the membrane occur for the starch solution?
No
Did diffusion across the membrane occur for the glucose solution?
Yes
What happened to the cell to cause it to shrink?
-Due to the hypertonic solution, water is leaving the cell.
What is happening to the cell since there seems to be no change?
-Since the solution is isotonic, there is no net movement of water.
What happened to the cell to cause it to swell?
-Due to the hypotonic solution, water is entering the cell.
