Unit 1: Section 3 - Cell Structure and Membranes Flashcards Preview

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Flashcards in Unit 1: Section 3 - Cell Structure and Membranes Deck (102)
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Are prokaryotic or eukaryotic cells more complex?

Eukaryotic cells

1

Name two parts of eukaryotic cell that prokaryotic cells don't have?

Nucleus and mitochondria

2

Parts of a cell are called ?

Organelles

3

What surrounds a cell?

Plasma membrane

4

What is the function of the plasma membrane?

Regulates the movement of substances into and out of the cell

5

What two things would you find in the nucleus and what surrounds the nucleus?

Contains the nucleolus and chromatin, surrounded by the nuclear envelope

6

What is the nuclear envelope?

Double membrane which surrounds the nucleus

7

What is the function of lysosomes?

Contains digestive enzymes to digest invading cells and dead organelles

8

Where are ribosomes made in the cell?

In the nucleolus

9

Where are proteins made in the cell?

In the ribosomes

10

What are the two types of ER called?

Smooth and rough

11

What's the function of the nucleus?

To control cell activity

12

What's the function of the smooth ER?

Makes and transports lipids

13

What's the function of the rough ER?

Processes and transports the proteins which gave been made by the ribosomes

14

What two organelles would a plant cell have but not an animal?

Chloroplasts and a cell wall

15

What us the function of the Golgi apparatus?

Modifies new proteins

16

What does the Golgi apparatus contain to transport protein in?

Vesicles

17

What in the cells produces energy through aerobic respiration?

Mitochondria

18

Do mitochondria have a single membrane?

No double

19

The inner membrane of a mitochondria fold into?

Cristae

20

What's the inside of the mitochondria called?

Matrix

21

What will a cell contain more of if it uses a lot of energy ?

Mitochondria

22

What cells line the small intestine?

Epithelial cells

23

What are micro villi?

Finger like projections on the villi

24

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

25

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

26

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

27

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

28

What's the formula for magnification?

Magnification = length of image / length of specimen

29

How do you convert millimetres into micrometres?

Times by 1000