Flashcards in Unit 1: Section 3 - Cell Structure and Membranes Deck (102)
Are prokaryotic or eukaryotic cells more complex?
Name two parts of eukaryotic cell that prokaryotic cells don't have?
Nucleus and mitochondria
Parts of a cell are called ?
What surrounds a cell?
What is the function of the plasma membrane?
Regulates the movement of substances into and out of the cell
What two things would you find in the nucleus and what surrounds the nucleus?
Contains the nucleolus and chromatin, surrounded by the nuclear envelope
What is the nuclear envelope?
Double membrane which surrounds the nucleus
What is the function of lysosomes?
Contains digestive enzymes to digest invading cells and dead organelles
Where are ribosomes made in the cell?
In the nucleolus
Where are proteins made in the cell?
In the ribosomes
What are the two types of ER called?
Smooth and rough
What's the function of the nucleus?
To control cell activity
What's the function of the smooth ER?
Makes and transports lipids
What's the function of the rough ER?
Processes and transports the proteins which gave been made by the ribosomes
What two organelles would a plant cell have but not an animal?
Chloroplasts and a cell wall
What us the function of the Golgi apparatus?
Modifies new proteins
What does the Golgi apparatus contain to transport protein in?
What in the cells produces energy through aerobic respiration?
Do mitochondria have a single membrane?
The inner membrane of a mitochondria fold into?
What's the inside of the mitochondria called?
What will a cell contain more of if it uses a lot of energy ?
What cells line the small intestine?
What are micro villi?
Finger like projections on the villi
Name two adaptations of epithelial cells in the small intestine?
1.) they have villi and then micro villi on the outside of the cell to increase surface area for food absorption
2.) lot of mitochondria to provide more energy energy for active transport
What are red blood cells adapted for and how are they adapted for this?
To carry oxygen, by having no nucleus to make room for oxygen-carrying haemoglobin
Name two ways that sperm cells are adapted for their function?
1.) they contain a lot of mitochondria to provide large amounts of energy
2.) they contain enzymes in their head which break down the plasma membrane of the egg cell
What's the difference between magnification and resolution?
Magnification is how much bigger the image is than the specimen where as resolution is how detailed the image is
What's the formula for magnification?
Magnification = length of image / length of specimen