specialised cells

Question 1

red blood cells are also known as `

Answer 1

erythrocytes

Question 2

what is the shape of an rbc and why is it beneficial

Answer 2

flattened biconcave shape which increases sa to v ratio so they can carry more o2

Question 3

in mammals what do rbcs not have

Answer 3

nuclei or many other organelles which increases space for haemoglobin which carried o2

Question 4

rbcs are also flexible so….

Answer 4

they can squeeze through narrow capillaries

Question 5

palisade cells are present in the

Answer 5

mesophyll

Question 6

chloroplasts in palisade cells can

Answer 6

absorb large amounts of light for photosynthesis and can move within cytoplasm in order to absorb more light

Question 7

the vacuole in palisade cells..

Answer 7

is large to maintain turgor pressure and is rectangular so that things can be tightly packed around it to form a continuous layer

Question 8

the cell wall in palisade cells is

Answer 8

thin to increase ror

Question 9

root hair cells have many

Answer 9

mitochondria to provide atp for active transport of minerals into the cell

Question 10

rhc have a large vacuole…

Answer 10

containing cell sap- solutions of ions and sugars which lowers water potential

Question 11

where are rhc present

Answer 11

at the surface of roots near the growing tips, long extensions called root hairs which increases the sa of the cell to maximises uptake of water and minerals from the soil.