Unit 1- Cell Structure Flashcards
What is the average cell size in micrometers if the length is 2000 µm and there are 10 cells up and down?
200 µm
What is the average length of cells if the total length is 10000 µm and there are 5 cells?
2000 µm
What is the average breadth of cells if the total breadth is 5000 µm and there are 10 cells?
500 µm
What unit is used to measure cells that are too small to measure in millimeters?
Micrometres (µm)
What is the conversion factor from millimeters to micrometers?
1 mm = 1000 µm
Which organelle is the site of aerobic respiration and ATP production?
Mitochondria
What structures do plant and animal cells have in common?
- Nucleus
- Cytoplasm
- Plasma membrane
- Mitochondria
- Ribosomes
What additional structures do plant cells have compared to animal cells?
- Cell wall
- Vacuole
- Chloroplasts
What is a plant cell wall made of?
Cellulose
What is the function of ribosomes in the cell?
Site of protein synthesis
What is the main difference between fungal cells and plant cells?
Fungal cells do not contain chloroplasts
Fill in the blank: Bacterial cells do not have a _______. But instead they have DNA stored as rings called_______.
Nucleus, plasmids
True or False: Bacterial cells contain mitochondria.
False
What does a bacterial cell wall not contain that a plant cell wall does?
Cellulose
Which organelles are absent in bacterial cells?
- Nucleus
- Mitochondria
What is the structure of a fungal cell wall compared to a plant cell wall?
Not made out of cellulose
What is the function of the vacuole in plant cells?
Stores sugar and water; helps control water content
How can you calculate the average length of cells?
Length divided by number of cells
What is the average cell length if the total length is 1000 µm and there are 4 cells?
250 µm
What does the cytoplasm do in a cell?
Where chemical reactions take place
What is the role of chloroplasts in plant cells?
Allow plants to make their own food using photosynthesis
What is the function of the nucleus in a cell
Contains DNA and controls all activities
What is the function of the plasma membrane in a cell
Controls what substances and can enter and exit a cell
What is the function of the cell wall
It helps the cell to keep its shape. It’s made of cellulose
What is the function of chloroplasts
Contain a green chemical called chlorophyll which absorbs sunlight. Allow plants to make their own food using photosynthesis
