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8th Grade CAST Life Science Review Flashcards | StudBud
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8th Grade CAST Life Science Review
8th Grade CAST Life Science Review
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Life Science Science Review #science #life #CAST #review #life science #NGSS #CAST
Flashcards
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Questions
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Answers
1
What is the average yearly temperature and precipitation of a region?
climate
biome
weather
ecosystem
2
Where does most energy on Earth come from?
Space
The Earth's core
The Moon
The Sun
3
True or False: You have one copy of every gene.
True
False
4
An organelle that performs photosynthesis (energy from the sun to build sugar molecules)
mitochondria
nucleus
chloroplasts
cell membrane
5
Examine the graph. What is causing the change in the population of female song sparrows?
not enough information
changes in food
habitat loss
competition with other bird species
6
Similarities in embryonic development show that...
which organisms are closely related
organisms share a common ancestor
all of the above
similarities between organisms
7
Which produces more variation (differences) in offspring?
asexual and sexual reproduction produce the same variation
asexual reproduction
sexual reproduction
none of the above
8
Which layer of rock contains the oldest fossils?
cannot be determined
Layer C
Layer A
Layer B
9
Which of the following accurately describes the levels of organization of an organism?
tissue->molecule->atom->organism-> cell->organ->organ system
cell->atom->molecule->tissue->organ->organ system->organism
organism->cell->organ system->organ-> atom->tissue->molecule
atom->molecule->cell->tissue->organ->organ system->organism
10
What will happen to the mice population over time? (What would picture 3 show?)
decrease in all mice
increase in white mice
stay the same
increase is gray mice
11
What are the 3 main parts of the nervous system?
kidneys, bladder, urethra
bones, joints, ligaments
brain, spinal cord, neurons
brain, heart, liver
12
One main difference between plant and animal cells is...
Plant cells have a nucleus
Plant cells have a cell wall
Animal cells have a cell membrane
Animal cells have chloroplasts
13
The respiratory system works with the ______________ system to transport oxygen around the body
nervous
excretory
digestive
circulatory
14
Which of the following is an example of an ecosystem service?
all of the above
purification of water by wetlands
regulation of atmospheric gases by algae
pollination of crops by bees
15
What process do cells use to change food and oxygen into carbon dioxide, water, energy?
cellular respiration
mitosis
photosynthesis
eating
16
DNA mutations can be...
harmful
all of the above
or have no effect
beneficial (helpful)
17
What is a producer in the food web?
swallowtail caterpillar
bolete fungus
persimmon tree
black bear
18
What is happening at number 3 in the water cycle shown?
perspiration
evaporation
precipitation
condensation
19
Oxpeckers sit on rhinos and eat parasites that live on rhino's skin. This is an example of...
competition
none of the above
predation
mutualism
20
The smallest unit of life is a...
molecule
cell
electron
organism
21
Examine the graph. What is causing the change in the population of female song sparrows?
changes in food
not enough information
habitat loss
competition with other bird species
