Year 11 Bio Unit 1 Semester 2 rev

Which cell has the most Surface area

Which cell has the most Surface area to volume ratio

Cells that have a ​ (a)   surface area to volume ratio tend to be ​ (b)   . This is beneficial as it allows ​ (c)   movement of ​ (d)   in and out of the ​ (e)   .

• higher
• smaller
• quicker
• substances
• cell
• lower
• solutes
• slower
• inefficient
• diffusion

Label the cell

i

g

e

d

c

b

Mitochondria

Endoplasmic reticulum

Nucleus

Plasma membrane

Chlorophyll

Lysosomes

Chloroplast

Golgi apparatus

Cell wall

Centrioles

Categorise each piece of information

Groups:

(a) Chloroplast

,

(b) Mitochondria

• oxygen input

• photosynthesis

• carbon dioxide input

• oxygen output

• 
• plant AND animal

• plant only

• Cellular respiration

• carbon dioxide output

• 
• chlorophyll

Label the correct one with the MOST appropriate label

a

b

Plant cell

Eukaroytic

Prokaryotic

Virus cell

Label the cell membrane components

c

d

e

f

Channel protein

Protein pump

Cholesterol

Glycoprotein

Integral protein

Protein gate

Cell membrane is comprised of many different components to help with its function of being ​ (a)   . The ​ (b)   allow for larger substances to move through the membrane, while smaller substances can just move through the ​ (c)   . Since the membrane can be easily traverse, ​ (d)   is present to control the fluidity and ridigity of the membrane. The ​ (e)   on the other hand, helps the body recognise each of its cells as its own.

• channel-proteins
• phospholipid
• cholestrol
• glycoprotein
• semi-permeable
• carbonhydrates
• diffusion
• integral protein

Label the image with the correct words

d

e

f

g

c

b

a

ATP

Faciliated diffusion

Active

Low concentration

Passive

Diffusion

High concentration

Diffusion occurs when substances move through the cell membrane. There are two types of diffusion, ​ (a)   and ​ (b)   . In passive diffusion the substances can move through the membrane or through the ​ (c)   in the membrane. This substances move from ​ (d)   concentration to ​ (e)   concentration (down the concentration gradient). This process requires no energy. However active diffusion does require energy but the substance movement does ignores the concentration gradient.

• passive
• active
• channel
• high
• low