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MCAS Crash Course
MCAS Crash Course
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8th grade MCAS Life Science Review
Flashcards
39 cards
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Practice quiz
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Questions
39
Answers
1
Comparing these two fish skeletons would best show evolution
a male and female
a recent fish with a long ago fish
same fish before and after a cut
same fish when small and again as adult
2
Lichens are made of green algae and fungi. What do the green algae give the fungi?
protection
food
water
Carbon dioxide
3
Human activity most likely contributes to which of the following changes on earth?
decrease in volcanic eruptions
increase in day length
decrease in large earthquakes
increase in atmospheric carbon dioxide
4
Which would help classify an organism into a kingdom?
natural habitat
anatomical structure
color
location found
5
The starch and water molecules in potato cells are stored in what organelle?
nucleus
vacuole
ribosome
mitochondrion
6
What likely caused many anaerobic bacteria to go extinct?
varying temperature of seasons
increase of ocean volcanic activity
slow movement tectonic plates
increase in photosynthetic organisms
7
Which of the following can be determined by studying an organism's chromosomes?
Sex of the organism
If endangered
How organism obtains food
Ecosystem of organism
8
Which list is in order from simple to most complex?
tissues, organs, cells, organ systems, organisms
tissues, cells, organs, organ systems, organisms
cells, organs, tissues, organ systems, organisms
cells, tissues, organs, organ systems, organisms
9
Where would this cell most likely be found?
mushroom
leaf
frog
bark
10
The instructions for coat color are found in
cytoplasm
membrane
mitochondria
chromosomes
11
Which explains why the beak shape of each bird developed differently?
Protection from predators
Food Sources
Nest Construction
Different Songs
12
The primary advantage of sexual reproduction over asexual reproduction is ...
More offspring
Greater genetic variety in offspring
longer development time for offspring
More food for offspring
13
Substances enter a plant or animal cell through which of these...
vacuole
chloroplast
nucleus
cell membrane
14
What kingdom would you find a paramecium in?
Plantae
Fungi
Animalia
Protista
15
Which of the following organisms produce energy from sunlight?
hawk
worm
rabbit
grass
16
Which of the following is a product of photosynthesis in plants?
Carbon dioxide
sugar
nitrogen
sodium chloride
17
Under a microscope this plant-like organism has many cell walls and no chloroplasts. Kingdom...
Animalia
Fungi
Eubacteria
Protista
18
Which are a direct product of photosynthesis?
fats and starch
protein and amino acids
carbon dioxide and water
oxygen and sugar
19
Which of the following best describe photosynthesis?
sugar and oxygen turned into water and carbon dioxide
carbon dioxide and water turned into sugar and oxygen
water and sugar turned into oxygen and carbon dioxide
oxygen and carbon dioxide turned into water and sugar
20
What could account for rapid rabbit population increase?
rabbit predator eliminated
High competition for food
migration of new animal that eats rabbit food
less water available
21
Which of the following best describes a role of mushrooms in ecosystems?
capturing energy from sunlight
consuming living plant material
breaking down dead plant material
taking energy from animal hosts
22
In photosynthesis green plants use energy from sunlight to make what product?
DNA
carbon dioxide
sugar
chlorophyll
23
What are the basic structural units of living organisms?
tissues
organs
cells
nuclei
24
Present in animal and plant cells. Makes energy for the cell
chloroplast
nucleus
cell wall
mitochondrion
25
What organisms are likely to be found on a dead tree?
consumers
predators
decomposers
producers
26
Single celled organisms that can create cells exactly like themselves use a type of
asexual reproduction
gamete formation
sexual reproductin
natural selection
27
Which of the following parts of the human body are most complex?
white blood cell
central nervous system
kidney
heart
28
Which of the following can be used to separate the following into 3 different groups?
method of movement
number of offspring
presence of nucleus
length of lifespan
29
Gas exchange, diaphragm, and inhale are all most closely associated with
excretory system
respiratory system
circulatory system
digestive system
30
Which of the following is not present in animal cells?
cell wall
cell membrane
mitochondrion
nucleus
31
The number of chromosomes in a normal liver cell...
23 original 23 copies
46 different types
46 male and 46 female
23 pairs
32
This population would likely go down if rats, rabbits, and snakes were eliminated
hawks
grasses
mushrooms
earthworms
33
What do these organisms have in common?
produce their own food
decompose other organisms
Made of cells
they cause disease
34
Which most likely caused the extinction of the heath hen?
overhunting
stable climate
plentiful food supply
abundant nesting sites
35
A farmer stops using his 10 acre farm letting the grass grow and fencing it off. In 20 years
overgrown bushes and small trees
mature hardwood forest
moss and rock
barren
36
Which two body systems work together to transport oxygen to cells?
respiratory and circulatory
respiratory and reproductive
digestive and respiratory
skeletal and respiratory
37
How is a skin cell from a mouse similar to an amoeba?
both move with pseudopodia
both consume carbon dioxide
Both have cell walls
Both need energy
38
Oxygen and sugar are products of
cell division
respiration
digestion
photosynthesis
39
What does this similarity in bone structure suggest about these 4 different animals?
same method of travel
migrate to same location
manipulate objects the same way
evolved from a common ancestor
