Cells and Transport PPQs #1

Explain how to carry out an investigation to test these predictions

Use cork bearer to get beetroot cores of similar ages and cut to same size

Use water bath to control temperature

Remove excess pigment

Use blue green colour filter in calorimeter to measure absorbance

Repeat with at least 5 different concentrations

Use smaller intervals between 0.8 and 1 to see which peak correct from the graphs

Explain why ATP is required for the movement of sodium ions into the cell

Sodium ions are being moved against concentration gradient using active transport

Describe how glucose molecules move into the cell

By facilitated diffusion through carrier proteins

Describe the roles of parts B and C in the formation and transport of extracellular enzymes

Vesicle fuses with Golgi

Modifies protein

Packages into secretory vesicle

Vesicle fuses with cell surface membrane

Glycoproteins and phospholipids are molecules found in the cell surface membrane. Give one function of the glycoproteins found in the cell surface membrane.

Involved in cell recognition

A cell surface membrane is partially permeable. The phospholipid bilayer is important in controlling the movement of molecules through the membrane. Explain how the structure of a phospholipid molecule contributes to the partially permeability of a cell surface membrane.

Phospholipid has hydrophilic head and hydrophobic tail

Allows non-polar molecules to pass through membrane

Polar molecules can’t pass through

Describe how scientists could have determined that P.falciparum is a eukaryotic organism and not a prokaryotic organism

Eukaryotic have membrane bound organelles

Prokaryotes have 70s ribosomes, Eukaryotic have 80s

Eukaryotic have linear DNA

Prokaryotic have plasmids

Which one is a glycoprotein?

C

Which is true for both eukaryotic cells and prokaryotic cells

C

Give one difference between a tissue and an organ

Tissue is made of one type of cell but organ is made of different tissues

In bacteria, where is the capsule located?

D

What do plant and animal cells both contain?

D

Cytoplasmic connections are between a plant cell and what?

B

What do prokaryotic cells and plant cells both contain?

D

What is the evidence that Woese suggested that the three domains are based on?

B

What are the two domains that contain prokaryotic cells?

B