Cell Theory
Which level of organization is represented by a group of different tissues working together to perform a complex function?
What is an organ?
During interphase, a cell grows, duplicates organelles, and
Doubles its DNA?
What type of cellular transport requires a cell to use energy?
What is active transport?
Which plant cell organelle uses light energy to produce sugar?
Chloroplasts
Cells often store materials like water, salts, proteins and carbohydrates in sac-like structures called
Vacuole
True or false? Unicellular organisms are only made up of prokaryotic
False
yeasts, protists, and amoebas are some examples
If a cell has 8 chromosomes, how many chromosomes will each of its daughter cells have after mitosis?
8
In a hypotonic solution, water will move ____ the cell, causing the cell to ____.
into; lyse/swell?
What serves as the cell’s boundary from its environment and controls what goes in and out of the cell?
the cell membrane
What is the function of lysosomes?
break down waste or harmful substances
What cells can be unicellular or multicellular?
What are Eukaryotes?
A cell receives a signal from the cell’s own nucleus to divide is an example of what?
internal regulation during the cell cycle
Which of the following best describes an isotonic solution?
the solute concentration is equal on both sides of the membrane
Which 4 characteristic are common to both prokaryotic cells and eukaryotic cells?
Cytoplasm, cell membrane, ribosomes and genetic info (DNA/RNA)
What is an example of a prokaryotic organism?
Bacteria
What is a feedback mechanism and give an example of one.
The body regulating body temperature? When the body gets too hot it sweats, and shivers when it gets too cold. This is a negative feedback mechanism.
What makes stem cells different from other cells in the body?
they are undifferentiated cells that can turn into a number of different kinds of cells as needed
If an animal cell were placed in a solution of salt water taken from the ocean, what would happen to the cell?
the cell would shrivel because the water solution is hypertonic.
Which of the following organelles would you not find in a plant cell?
Centrioles
Key characteristic of the cell membrane
selectively permeable
Which principle of cell theory best supports the idea that new cells will replace damaged cells in a scraped knee?
the cell theory concept all cells come from other cells
When too much salt is in the blood stream, the brain releases a hormone in the body that has the body make less urine.
negative feedback loop
What type of transport occurs when a white blood cell captures bacteria?
endocytosis
Which of the following is found in a eukaryotic cell, but is not found in a prokaryotic cell?
the Nucleus
What are the three phases of the cell cycle?
1. Interphase
2. Mitosis
3. Cytokinesis