Intro and Microscopes
Biology is the study of _________
Living organisms
What is the cell membrane made of?
Phospholipid bilayer/phospholipids and proteins
What are the three parts of the nucleus
1. Nucleolus
2. Nucelar Envelope
3. Nuclear pores
Animal cells have which 2 cell organelles that plants do not have?
Lysosomes
Centrioles
Plant and animal cells are both this type of cell.
Eukaryotic
To get total magnification of a microscope you must do what?
Multiply the magnification of the objective and ocular lenses
What is the main function of the cell membrane?
Controlling what goes in and out of the cell
The function of the ER is?
Transport and store materials
Plant cells have which 2 organelles that animal cells do not have?
Cell wall
Chloroplasts
How is DNA organized in a eukaryotic cell?
Found within a membrane bound nucleus
When focusing a microscope, state the order of knobs which must be used.
1. Coarse
2. Fine
The cytoplasm is a jelly filling the cell. What is its function?
1. For organelles to float around in
2. Aid in chemical reactions
3. Provide shape/structure
What is the reaction in the mitochondria and what does it produce?
Cellular respiration, ATP
State the function of lysosomes and centrioles.
1. lysosomes break down and digest waste
2. centrioles help chromosomes line up in cell division
How is DNA organized in a prokaryotic cell?
DNA floats loose in the cytoplasm
When viewing a microscope how is the image oriented compared to how the slide is placed?
Upside down and backwards
What is the cytoskeleton made of?
Microtubules and filaments
Where does the Golgi receive materials from and what does it do with them?
Receives from the ER, stores, modifies and transports these materials in and out of cell
State the function of chloroplasts and the cell wall
1. chloroplasts capture sunlight and provide sight for photosynthesis
2. cell wall protects plant cells and maintains shape
Give two examples of prokaryotes
Bacteria and Archaea
State the three components of cell theory
1. All living things are made of cells
2. The cell is the basic unit of structure and function for all organisms
3. All cells arise from previously existing cells
Ribosomes are found in these two locations within the cell and are the sites of protein synthesis.
1. Rough ER
2. Floating in cytoplasm
Which cell organelle is responsible for controlling all cell operations?
Nucleus
Vacuoles are present in plant and animal cells. How do their structure and function differ in the two kinds of cells?
Animal: multiple, small. Store nutrients and water.
Plant: one large in centre of cell. Store large amounts of water and maintain cell shape.
This type of cell is more recent and advanced.
Eukaryotic