Specialised Animal Cells

Question 1

What is a erythocyte?

Answer 1

red blood cells
contains haemaglobin which transports oxygen in bloog e.g. oxygen or carbon dioxide

it is a circle with a smile and no eyes or nose

Question 2

What are the features of erythocytes?

Answer 2

dimpled surface - increases surface area faster rate of diffusion

no nucleus - more space for haemoglobin and carries more oxygen

Question 3

What is ciliated epithelial cells?

Answer 3

cells that line the inside of tissues e.g. lungs, blood vessels, gut

look like long crowns on a base

cilia wave to move mucus + particle along

Question 4

What is squamous epithelial cells?

Answer 4

look like lots of eggs joined together

very thin layer of cells

have short diffusion pathway so faster rate of diffusion

e.g. capillaries

Question 5

What is neutrophil?

Answer 5

a type of phagocyte (wbc)

engulfs foreign particles e.g. pathogens and digests them with lysosomal enzymes

looks like a big c with an E and small dots

Question 6

What are the features of neutrophils?

Answer 6

lots of lysosomes - contain enzymes to hydrolyse (break down) foreign objects

flexible shape - engulfs objects

Question 7

What is sperm cell?

Answer 7

male gametes (haploid)

head = acrosome
part of head = lots of mitochondria

tail = flagellum

acrosome has enzymes to hydrolyse the jelly layer surrounding the egg

lots of mitochondria - atp for swimming

flagellm - allows sperm to move to the egg