Practical Focus

Practical Focus

Multiple Choice

What equipment is used to observe cells?

• Microscope

• Quadrats

• Potometer

• Visking Tube

Multiple Choice

Which enzyme breaks down lipids?

• Protease

• Helicase

• Amylase

• Lipase

Multiple Select

What are the 3 types of adaptations?

• Structural

• Behavioural

• Physiological

• Functional

• Psychological

Multiple Choice

What does the water in the visking tube represent?

• Water

• Blood

• Hydrocloric acid

• nutrients

Poll

Which microscope has higher magnification and resolution?

• Light

• Electron

Multiple Choice

What must you do to the slide to prevent it from slipping?

• Clip it in place

• Stick it with tape

• Use a cover slip

• Nothing

Multiple Choice

When using a microscope, use the lowest objective lens first.

• False

• True

Open Ended

Define "magnification"

Open Ended

How do you calculate the total magnification of a microscope?

Multiple Choice

How do you calculate magnification?

• Image / actual

• image x actual

• actual / image

• actual X image

Multiple Choice

How do you calculate actual size?

• use a ruler

• image x magnification

• image / magnification

• magnification / image

Multiple Choice

How do you convert millimetres to micrometers?

• X10

• X100

• X1000

• X1

Open Ended

A student wants to investigate the effect of caffeine on reaction time using the ruler drop test. What equipment do they need?

Multiple Choice

A student wants to investigate the effect of caffeine on reaction time using the ruler drop test. What is the IV?

• the student

• the measurement the ruler was caught

• Whether the student has had caffeine or not.

• the ruler

Multiple Choice

A student wants to investigate the effect of caffeine on reaction time using the ruler drop test. What is the DV?

• The student

• The amount of caffeine

• The length the ruler was caught

• the type of caffeine

Open Ended

A student wants to investigate the effect of caffeine on reaction time using the ruler drop test. give 3 CVs.

Open Ended

A student wants to investigate the effect of caffeine on reaction time using the ruler drop test. How can they improve reliability?

Open Ended

A student wants to investigate the effect of caffeine on reaction time using the ruler drop test. How can they improve validity?

Poll

Is the ruler drop test a reflex?

• Yes

• No

Open Ended

Why is it important that the quadrats are placed in random?

Open Ended

How do you increase the reliability of the experiment?