Cells And Tissues

Question 0

Prokaryotic

Answer 0

Sing cell organisms-lack nucleus, hereditary material in cytoplasm, no organelles, cell wall and capsule

Question 1

Eukaryotes

Answer 1

Multi cellular organisms-nucleus (karyon) with DNA, extensive organelles

Question 2

The plasma membrane

Answer 2

Defines boundaries, interactions with other cells, controls the flow of substances; selectively permeable, maintains cellular homeostasis, made up of lipids and proteins, fluid mosaic

Question 3

Receptors located on the plasma membrane

Answer 3

Determine cell responses, define cell function

Question 4

The nucleus

Answer 4

Control centre-contains DNA and in the nucleolus-RNA

Question 5

Endoplasmic reticulum

Answer 5

Component productio/assembly line

Question 6

Smooth ER

Answer 6

Lipid synthesis

Question 7

Rough ER

Answer 7

Protein synthesis

Question 8

Golgi complex

Answer 8

Assembly and packaging-carbohydrate modification packaging-modifying and sorting proteins into vesicles

Question 9

Mitochondrion

Answer 9

Energy production-site of ATP synthesis

Question 10

Lysosomes

Answer 10

Recycle centre-contains enzymes, breaks down small foodstuffs destroys unwanted proteins and chemicals

Question 11

Secretory granules

Answer 11

Container transport-contains a product to be released into the circulation. Granules bind to plasma membrane and their contents are released by exocytosis

Question 12

Epithelia

Answer 12

Layers of closely bound cells, covering internal and external surfaces-protective/barrier, control absorption and secretion-GI tract

Question 13

Simple

Answer 13

One layer

Question 14

Simple squamous epithelial cells are found where?

Answer 14

Blood vessels, alveoli exchange of nutrients and gases-flat surface cells one later thick

Question 15

Stratified squamous

Answer 15

Flat surface cells, many layers, protection/barrier found in oral cavity, anus, vagina, Oesophagus, skin

Question 16

Keratinised stratified squamous

Answer 16

Flat surface cells, many layers-protection, barrier (waterproofing) found-skin, hair, footpads of animals

Question 17

Simple cuboidal epithelium

Answer 17

One layer-secretion and absorption found in glands, kidney tubules

Question 18

Simple columnar epithelium

Answer 18

Tall cells with nasally located nuclei-one layer-absorption and secretion found in gastrointestinal tract

Question 19

Modified simple columnar epithelium

Answer 19

Tall cells with basally located nuclei, one layer-surface modifications e.g microvilli function absorption & secretion found in the gastrointestinal tract

Question 20

Complex columnar epithelium

Answer 20

Appear stratified -all cells touch basement membrane (Cillia & goblet cells) functions micocillary escalator found in trachea and large respiratory airways