Defining Life Quiz

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What are the two types of large molecules found in all living things?

Proteins and nucleic acids

What is the structural and functional unit of life?

The cell

What are the key traits that define life according to most current definitions in biology?

Homeostasis, organization, metabolism, growth, adaptation, response to stimuli

What is a conflicting movement in the context of traffic flow?

A movement where paths of vehicles or pedestrians cross one another. Signup and view all the answers

Define a stage in the context of traffic control.

A group of non-conflicting phases that move at the same time. Signup and view all the answers

What is the cycle time in the context of traffic control?

The time it takes for a complete sequence of stages to occur. Signup and view all the answers

Explain the concept of a reversion in actuated traffic control.

The stage to which the traffic controller will return if there is no demand. Signup and view all the answers

What is the minimum interval in actuated traffic control?

The minimum amount of time for which a signal will stay green before changing. Signup and view all the answers

Who developed the first automated system for controlling traffic signals, and in which city was it used?

Leonard Casciato and Josef Kates Signup and view all the answers

What is the difference in terminology regarding traffic signal phases between Australia/New Zealand and the UK/USA?

In Australia and New Zealand, a 'phase' is equivalent to a 'stage' in the UK and USA, while a 'signal group' in Australia and New Zealand is similar to a 'phase' in the UK and USA. Signup and view all the answers

What is the purpose of a filter phase in the UK?

A filter phase allows non-conflicting traffic to make particular turns (normally left or ahead) through a junction. Signup and view all the answers

What are the different control systems used to manage traffic lights?

Ranging from simple clockwork mechanisms to sophisticated computerized control and coordination systems that self-adjust to minimize delay to people using the junction. Signup and view all the answers