WorksheetsCellular Signals
Total questions: 19
Worksheet time: 12mins
Name
Class
Date
1.
Where are hormones produced (made)
a)
Glands
b)
Bloodstream
c)
Target organs
2.
How do hormones travel from the glands where they are made to their target organs?
a)
Bloodstream
b)
Nerves
c)
Bones
3.
Changes in an organisms environment that cause a response
a)
Tropism
b)
Hormone
c)
Stimuli
d)
Response
4.
A plant growing in response to the sunlight.
a)
Gravitropism
b)
Phototropism
c)
Thigmotropism
d)
Hydrotropism
5.
Pollen tubes forming in the Style of the Carpel during fertilization. The pollen grows towards glucose.
a)
Gravitropism
b)
Phototropism
c)
Thigmotropism
d)
Chemotropism
6.
The shoot of a plant growing up.
a)
Positive Gravitropism
b)
Negative Gravitropism
c)
Thigmotropism
d)
Hydrotropism
7.
Helps fruit ripen
a)
Auxin
b)
Gibberellin
c)
Cytokinins
d)
Ethylene
8.
Breaks seed dormancy and promotes growth (can make fruit bigger)
a)
Auxin
b)
Gibberellin
c)
Cytokinins
d)
Ethylene
9.
Promotes cell division and prevents senescence (cell breakdown)
a)
Gibberellin
b)
Auxin
c)
Cytokinins
d)
Ethylene
10.
Hormone related to the growth of the plant in response to tropisms
a)
Auxin
b)
Cytokinins
c)
Ethylene
d)
Absisic acid
11.
Which plant hormone is heavily involved in cell division and metabolism?
a)
auxin
b)
cytokinin
c)
gibberellin
d)
ethylene
12.
Mast cells produce __________________ which causes the inflammatory response.
a)
Cytokines called Interleukins
b)
Cytokines called Histamines
c)
Cytokines called Antibodies
d)
Cytokines called interstitial fluids
13.
There is sufficient empirical evidence to suggest that pheromones play a significant role in signalling between members of the same animal species. True or false
a)
True
b)
False
14.
A pheromone is a ________ chemical substance or signal produced and released into the ________ by an animal, affecting the behaviour or physiology of others of its own species.
a)
specific, bloodstream
b)
subtle, environment (air)
c)
subtle, bloodstream
d)
specific, environment (air)
15.
Neurotransmitters are released from...
a)
dendrites
b)
synaptic vesicles
c)
cell bodies
d)
nucleus
16.
Neurotransmitters are received by ... on target cells.
a)
receptors
b)
neurons
c)
spinal cords
d)
myelin sheaths
17.
A brief electrical charge that travels down the axon of a neuron is called the:
a)
synapse
b)
refractory period
c)
myelin sheath
d)
action potential
18.
The part of the neuron where action potentials take place.
a)
Axon Terminal Button
b)
Myelin Sheath
c)
Dendrite
d)
Axon
19.
What is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?
a)
Neurotransmitters
b)
Synapse
c)
Threshold
d)
Impulse
100 %
