NEW
Font size
WorksheetsSemester 1 Exam
Total questions: 20
Worksheet time: 10mins
What color are the electrons?
Red
Purple
Blue
Green
What does the model represent?
A compound only
A molecule and a compound
A molecule only
An atom and a molecule
What is the charge of a proton?
Positive
Negative
Neutral
The attraction between atoms that forms bonds is between which two particles?
The positive proton and the negative electron
The negative proton and the positive electron
The negative neutron and the negative proton
The positive neutron and the positive electron
Liquid is heated until it evaporates. This is a _______ change.
Physical
Chemical
Which direction does the energy provided by photosynthesis move to provide for cellular respiration in all of the tree’s cells?
The glucose moves down from the leaves toward the roots.
The water moves down from the leaves toward the roots.
The glucose moves up from the roots toward the leaves.
The ocean can be divided into two general regions, photic-where light can reach and aphotic-where it is dark. In which region can photosynthesis occur?
Only in the photic zone, because
photosynthesis requires light to occur.
Only in the aphotic zone, because photosynthesis doesn't require light to occur
Which trophic level has the most mass in an ecosystem?
Trophic level 1, the producers
Trophic level 2, the primary consumers
Trophic level 3, the secondary consumers
Trophic level 4, the tertiary consumers
The diagram is incomplete. What arrows need to be added to the diagram?
arrows to show the input from other energy sources
arrows to show the energy lost to the environment at each level
an arrow to show energy flow from consumers to producers
an arrow to show energy flow from decomposers back to consumers
Which molecule provides the chemical energy needed by all organisms?
Water
Glucose
Carbon Dioxide
Oxygen
True or False: Photosynthesis is the process most living things on Earth get the energy they need to survive.
True
False
Which of the following does NOT return atoms to the nonliving part of an ecosystem?
Cellular respiration
Burning fossil fuels
Photosynthesis
decomposition
In an energy pyramid, which type of organism has the least energy available to them?
Producers
Primary Consumers
Secondary Consumers
Tertiary Consumers
Which of the following is a secondary consumer?
In the food web, which organism does not supply energy to the owl?
Squirrel
Snake
Acorn
Deer
What best describes the niche of this organism?
Consumer
Predator
Scavenger
Producer
What would happen if two species lived in the same niche in a community for a very long time?
The two species would eat each other and die off.
The two species would compete with each other and eventually one would die off.
The two species would reach equilibrium and be just fine.
The two species would have to move to a new ecosystem.
Which of the following would be a limiting factor for the producers in this ecosystem?
Sunlight
Soil
Minerals
Water
Which definition best describes the relationship between a parasite and its host?
A symbiotic relationship where one species benefits and the other is harmed.
A symbiotic relationship where both species benefit.
A symbiotic relationship where one species benefits and the other does not benefit nor is it harmed.
A symbiotic relationship where one species is eaten by the other.
How would an organism that has very few predators affect an ecosystem if it were to die out?
The producers would die out.
The whole ecosystem would die out.
The ecosystem would reach equilibrium.
The herbivores would overpopulate.
