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7th Grade Life Science MCA Review Flashcards | StudBud
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7th Grade Life Science MCA Review
7th Grade Life Science MCA Review
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7th Grade MCA Review
Flashcards
44 cards
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1
Which invention made it possible to discover and learn about cells?
Microscope
Dichotomous Key
Telescope
Magnifying Glass
2
A physical characteristic of a living thing is called what?
Trait
Genotype
DNA
Gene
3
In the food web below, what would we call the deer?
herbivore
scavenger
omnivore
carnivore
4
What is a hypothesis?
A fact about something
An educated explanation of what will happen
A guess that someone makes
Something that must be correct
5
What is the basic unit of all living things?
Organelles
Organs
Tissues
Cells
6
Look at the diagram below. What does the fossil evidence of ancient horse ancestors show?
The horse family has evolved to have more toes.
The horse family has not changed throughout history
The horse family has stayed the same over time..
Horse family has evolved to have less toes and be taller.
7
A group of organs working together is called what?
Organism
Tissue
Organ System
Cells
8
Which are ordered from the simplest to the most complex?
Organism, ecosystem, population, community, biome
Organism, population, ecosystem, community, biome
Organism, community, population, ecosystem, biome
Organism, population, community, ecosystem, biome
9
If G= green pea and g = yellow pea...How many pea offspring would turn out green?
75%
100%
0%
25%
10
What kind of relationship is a tick and a dog?
Parasitism
Mututalism
Predator and Prey
Commensalism
11
Which is NOT a specialized cell?
Brain cell
Muscle cell
Fat cell
Bacteria cell
12
How does your skin protect you from viruses and bacteria?
It doesn't help in protecting you at all.
It attacks the viruses and bacteria and kills them
It serves as a protective layers keeping them out
It lets the germs come into your body
13
What organs are part of the nervous system?
Brain, brainstem, and spinal cord
Stomach, small intestine, and esophagus
All of the muscles in the body
Heart, blood, and blood vessels
14
What is the function of the circulatory system?
To break down food into usable energy
To deliver oxygen to the body's cells and take CO2 away
To support the body's tissues
To send messages from one place to another
15
How is an infectious disease different than a genetic disease?
Genetic you "catch" and infections you don't
Infections you "catch" and genetic you don't
You get genetic disease from virus and bacteria
You are born with infectious diseases
16
What is the common event called where all individuals of a particular species die out?
Fossil Record
Natural selection
Genetic variation
Extinction
17
What is pictured below?
A tissue
A Cell
DNA
A ladder
18
What is it called when something is not changed at all throughout an experiment?
Controlled variable
Independant variable
Consistant
Dependant variable
19
When an organims has a dominant allele and a recessive allele (like Aa), what is that called?
Homozygous
Dominant
Recessive
Heterozygous
20
In the food web below, what would we call the mountian lion?
Prey
Producer
Decomposer
Consumer
21
When an organism is only one cell big, what do we call it?
Population
Specialized cell
Unicellular
Multicellular
22
Which of these is NOT used as evidence for evolution?
Similar (homologous) body structures
DNA sequesnces
Body size
Early embryo development
23
What is the primary source of energy for most ecosystems?
Sunlight
Water
Plants
Animals
24
Which body system fights infection inside the body?
Digestive
Immune
Urinary
Circulatory
25
What is the theory that states that organisms change over time?
Gravity
Relative dating
Evolution
Natural selection
26
What besides your DNA affects your physical traits?
Your alleles
Your good looks
Your environment
How well you study
27
What is not an example of natural selection?
Monarchs liking the taste of milkweed
The male peacock with the best tail is chosen as a mate
Pesticide Resistance
The gray peppered moths ability to hide on dark tree bark
28
If A = normal pigment and a = albinism, what is the chance that they can have an albino child?
0%
100%
50%
25%
29
What does the integumentary system do?
Helps the body break down food into usable pieces.
Helps keep a stable body temperature and allows for feeling
Helps carry messages from place to place
Helps to make offspring.
30
Which organism is part of the Protist Kingdom?
Sunflower
Button Mushroom
Amoeba
E. Coli
31
What is the biggest difference between plants and animals?
Plants eat dead things, animals do not.
Plants must eat in order to live animals make its own food
Plants make their own food, animals must eat to live.
32
Where is the nucleus of the cell?
G
L
I
H
33
Which best describes asexual reproduction?
One parent producing genetically different offspring.
Two parents producing genetically different offspring.
One parent producing genetically identical offspring.
Two parents producing genetically identical offspring.
34
In a forest ecosystem, deer feed on trees that grow in the soil. What is the soil?
A producer
An abiotic factor
A consumer
A biotic bactor
35
What microorganisms can be killed using antibiotics?
Bacteria and viruses
Viruses only
Fungus only
Bacteria only
36
A hawk feeds on a mouse. What is the mouse an example of?
Producer
Decomposer
Predator
Prey
37
Which organisms from the food web are a decomposers?
The bacteria and fungi
The bacteria and grass
The hawk and squirrel
The tree and shrub
38
What occurs during photosynthesis?
Cells use sugar to make energy.
Cells use oxygen to break down sugar and release energy.
Cells use energy in carbon dioxide to make sugar.
Cells use sunlight energy to make sugar
39
What do plant cells have that animal cells do not?
Chloroplasts and a nucleus
Chloroplasts and cell wall
Cytoplasm and a nucleus
Cell wall and cell membrane
40
True or False. Extinction is a common event in Earth's history.
True
False
41
A person made a model of a cell. Based on this person's model, what is the best conclusion?
Cells have organelles that help carry out life functions.
Cells in the body are all round.
Cells are filled with styrofoam.
All cells are the size of someone's hand
42
Which statement below is the inference?
The bread feels warm.
I see a goose that is white and black.
I smell cinammon.
The pie must be apple.
43
Which statement is most true about sexual reproduction?
Parents share a quarter of DNA with their offspring.
Offspring are genetically identical to the parents.
There is only one parent.
Parents share half of their DNA with their offspring.
44
A trait that helps an organism survive and reproduce is called what?
Natural Selection
Variation
Species
Adaptation
