Cell Theory and Basics
True or False
All prokaryotic organisms are unicellular.
False
Which cell structure controls what enters and leaves the cell?
The cell membrane controls what enters and leaves the cell.
What does unicellular mean?
Unicellular means an organism is made of one cell.
A student sees a cell with a cell wall and chloroplasts. What type of cell is it most likely observing?
A plant cell because it has a cell wall and chloroplasts.
What is the only mammal capable of true flight?
A Bat.
According to cell theory, where do new cells come from?
New cells come from pre-existing cells.
Which organelle captures sunlight for photosynthesis?
Chloroplasts capture sunlight for photosynthesis.
What is the main difference between prokaryotic and eukaryotic cells?
Eukaryotic cells have a nucleus containing DNA. Prokaryotic cells do not have a nucleus.
What is the difference between a cell and an organism?
Red blood cells.
What is the smallest prime number?
2
True or Fale
Cells are the smallest organelles that make up human life.
False:
Cells are not organelles. Organelles are the tiny structures or "organs" of a cell.
What is the function of the nucleus?
The nucleus contains DNA and helps control the cell's activities.
Why are bacteria considered living organisms even though they do not have a nucleus?
Bacteria are living organisms because they are made of cells and carry out life processes, even though they do not have a nucleus.
A plant cell is placed in an environment where it cannot receive sunlight. Which cellular process would be affected first, and which organelle is involved?
Photosynthesis would be affected because chloroplasts capture light energy.
What is the only continent located in all four hemispheres?
Africa
What is one reason why a cell would require additional energy?
Name any function of life.
Example: divide, get rid of waste, etc.
How do the mitochondria and chloroplasts perform different jobs?
Mitochondria release usable energy from food. Chloroplasts capture light energy for photosynthesis.
A student observes two organisms. One is a bacterium, and the other is an amoeba. Both are unicellular. Explain why they belong to different cell classifications.
Bacteria are prokaryotic because they lack a nucleus. Amoebas are eukaryotic because they have a nucleus.
A muscle cell and a nerve cell both contain many mitochondria. Explain why both types of cells need large amounts of energy.
Muscle cells require energy to contract. Nerve cells require energy to maintain and transmit signals.
What is the only letter that does not appear in any U.S. state name?
Q