Responding to Change Random Retrieval

One role of ATP in muscle contraction is to provide the energy required for the 'powerstroke' of the myosin head. What is the other use of ATP in muscle contraction?

Name the molecule that carries out the function : Attaches to the Z line at the end of the sarcomere.

The muscle filament in the above diagram is relaxed, what would happen to the following zones when it contracts?

The image above shows a muscle fibre. Name organelle E

The image above shows a muscle fibre. Name organelle C

Point C is the point where most colour sensitive photoreceptor cells are located. What is it called?

The table shows the results on investigating how fast an anaesthetic works. Using the results from the machine, was there a significant difference between anaesthetics S and Q?

Using the diagram, name D

True or False - The speed of conduction along an unmyelinated neurone is around 5 m/s ( jogging pace).

Once an action potential has been generated, why is the wave of depolarisation only in one direction?

Once an action potential has been generated, what causes the next section of the axon membrane to become depolarised?

True or false: If more sodium channels are opened by a stimulus, then the action potential which is generated is bigger.

Why can't a second action potential pass immediately after the first ?

Which of the events (A - F above) starts depolarisation? Type the letter in the box

What do we call the process happening at '3' on the above diagram?

Name protein C in the above diagram.

Which word best describes the charge distribution across a resting axon plasma membrane?

Honey bees can detect the polarised light from the sun and use it to navigate even in cloudy weather. Is this taxis or kinesis?

True or False : Taxis is when an organism either moves faster in harsh conditions or turns less in harsh conditions.

What is a growth response to light called?