OCR AS Biology

This organelle functions in cellular respiration

The organelle functions to package and deliver protiens

Cell organelles are located within the (__________) of the cell

The Endoplasmic reticulum functions to

Genetic material is contained within the (___________) of the cell

This organelle is responsible for destroying worn-out cell parts

The (__________) controls what enters and leaves the cell

The rough endoplasmic reticulum has (__________) located on it

Located within the nucleus, it is responsible for producing ribosomes

Which structure is directly responsible for the formation of proteins within a cell?

What part of the cell is responsible for the breaking down and digesting of things

What part of the cell serves as an intracellular highway?

Which of the following would you NOT find in a bacterial cell?
A)DNA
B)Cell Membrane
C)Golgi apperatus
D)Ribosomes

Which of the following is found in plant cells but not animal cells?
A)Cell wall
B)Vacuole
C)Mitochondria
D)Endoplasmic reticulum

The jellylike interior of the cell is called the

What part of the cell makes protiens

Where are the ribosomes usually located in animal or plant cells?

What part of the cell serves to process, package and export protiens?

What is cell signalling?

The function of a glycolipid is

What do channel proteins allow?

What do phospholipids do?

What does cholesterol do in the membrane?

Glycoproteins are...

How does a protein enter the cell

How does a sodium ion enter the cell?

How does water enter a cell?

How does oxygen enter the cell?

How does alcohol enter the cell?

The molecule that a signal molecule binds to is _________

The membrane contains binding sites which are

The signal molecule has a shape that is

The shape of the binding site and the shape of the signal molecule are

Cell signalling occurs when signal molecules bind to molecules on the

An example of a cell signalling molecule is

Modern drugs often act by mimicking the action of

How does heating affect cell membranes?

What happens in anaphase?

What happens is metaphase?

Prophase

What happens in Telophase?

The elastic fibres function is to

The function of blood is to

The function of cartilage during inhilation is to

The function of a goblet cell is

The function of smooth muscle is to

The function of squamous epithelium is to

The function of ciliated epithelium is to

Single-celled organisms have a _______ surface area to volume ratio

In large animals the surface area to volume ratio is

Active organisms need a lot of

Do single-celled organisms need a 'pump'?

Large organisms have a large surface area but a very large...

True or false: Ventilation helps to increase the concentration of oxygen in the aveoli

True or false: A low concentration of oxygen in the blood facilitates diffusion

True or false: Carbon dioxide leaves the blood by osmosis

True or false: The alveoli have ciliated epithelium

True or false: Elastic fibres contract to reduce the size of the alveoli

True or false: Elastic fibres help to expel air from the alveoli

True or false: During inhilation, the intercostal muscles contract

True or false: The alveoli contain smooth muscle fibres

True or false: The alveoli are stretched as more air enters the lungs

True or false: A short diffusion pathway helps to create a steep concentration gradient

True or false: A short diffusion pathway helps to maintain a steep concentration gradient

True or false: Cartilage keeps the airways rigid

True or false: Tidal volume must be measured at rest