4.09 Test Study Guide: Survey of Living Things

Which action can both humans and flatworms do?

• smell fresh food

• communicate verbally

• see the shape of an approaching predator

• form images from sensory organs

Tags

NGSS.MS-LS1-8

The diagram shows an electrical impulse moving through the axon of a neuron.

Which sections of the diagram show the actual transmission of an impulse through an axon?

• A

• A-B

• B_C

• C-A

 What happens when an action potential reaches the end of the axon?

• The neuron takes up chemical messengers

• The neuron releases chemical messengers

• The sodium ions travel back toward the dendrites

• The potassium ions travel back toward the cell body

Refer to the illustrations.

Which illustration shows the direction in which an action potential travels through a neuron?

• A

• B

• C

Tags

NGSS.HS-LS2-3

Which term is the basic cell of the nervous system?

• axon

• dendrite

• neuron

• sodium

What do both the motor neurons and hormones do in this loop?

• They carry messages that result in a return of the system to its original state

• They oppose each other's messages to restore homeostasis

• They take in sensory information that is sent to the brain

• They cause the body to increase the action of a stimulus

Tags

NGSS.HS-LS1-3

Which outcome could be the goal of a negative feedback loop?

• to enhance an action of a stimulus

• to release hormones

• to signal receptors to take in sensory information

• to return a substance to a normal level

Tags

NGSS.HS-LS1-3

Which situation most likely involves the hormone gibberellin?

• the onset of winter dormancy

• the growth of top-located buds

• the development of new seedlings

• the response of a plant to gravity

What explains why a single ripe fruit may help ripen an entire crate of unripe fruit?

• The hormone auxin transports easily

• The hormone ethylene is a gas and disperses easily

• The hormone gibberellin is produced on the skin of fruits

• The hormones ethylene and auxin counter each other's actions

Which statement is correct about the human muscular system?

• Smooth and cardiac muscles operate involuntarily

• Skeletal muscles often form in hollow internal structures

• Each bone is attached to one muscle

• Muscles of the body can pull and push