Topic 1.2 ultrastructure of cells Flashcards Preview

Plasma Membrane and Cell division > Topic 1.2 ultrastructure of cells > Flashcards

Flashcards in Topic 1.2 ultrastructure of cells Deck (17):
1

Prokaryotic cells

Simple cell structure, no compartmentalisation, NO membrane bound organelles.

2

What do prokaryotic cells have?

Cytoplasm, Plasma membrane, Naked DNA, cell wall, ribosomes (70s) Pili, flagellum.

3

Binary fission related to prokaryotes?

binary fission is the splitting of two. it divides prokaryotes to create identical copies.

4

Eukaryotic cells

HAVE membrane bound organelles, Compartmentalised cell structure

5

What are organelles with single membrane?

Rough endoplasmic reticulum
Smooth endoplasmic reticulum
Golgi apparatus
Lysosomes
Vesicles and vacuoles

6

What are organelles with double membrane?

Nucleus
mitochondria
chloroplast

7

What does the nucleus have inside it?

Outer membrane - protects chromosomes
inner membrane
nucleoplasm - liquid
nucleolus - creates ribosomes
Chromatin
nuclear envelope
pore in nuclear envelope.

8

What does mitochondria have inside it?

USED to made ATP
Smooth outer membrane
inter membrane
crista
chromosome - determines hereditary characteristic
ribosome - produces protein
matrix

9

what does chloroplast have inside it?

CARRIES out photosynthesis
smooth outer membrane
Granum
Thlaklad membrane
chromosome
ribosome - synthesise cytoplasmic proteins
Stroma

10

What does endoplasmic reticulum do?

processes materials
transfers proteins
transforms chemicals in cells

11

Difference between RER and SER

RER has ribosomes SER does not

12

What does the Golgi apparatus do?

Complex vesicle made of stacked pouches called cisternae.
Transports, modifies, packs proteins and lipids into vesicles for delivering to targeted places.
carries proteins to plasma membrane

13

What do lysosomes do?

They have digestive enzymes
important in development of cells and the exit of substances.

14

What does the plasma membrane do?

controls what goes in and out of cell

15

Exocrine glands?

secrete substances through ducts

16

endocrine glands?

secrete substances directly into the blood stream.

17

How does the pancreas have both endocrine and exocrine glands?

When secreting pancreatic lipase into small intestine is exocrine because its through ducts. when secreting insulin into blood it is endocrine because it is directly into the blood stream.