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7th Grade Life Science Final Review Flashcards | StudBud
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7th Grade Life Science Final Review
7th Grade Life Science Final Review
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1
What is a hypothesis ?
An educated guess, usually a statement.
An observation
The object in an experiment being manipulated
An experiment
2
What are the basic structural units of all living organisms?
tissues
organs
Organ systems
cells
3
Please list the 8 levels of classification in ORDER
Kingdom, Domain, phylum, Class, order, family, genus, species
Species, Domain, Class, kingdom, phylum, order, family, genus,
Domain, kingdom, Class, phylum, order, family, genus, species
Domain, kingdom, phylum, Class, order, family, genus, species
4
What is an adaptation?
Something that aids an organism’s survival
Something that an organism can catch from siblings
Something that hurts an organism’s survival
5
How are MOST of your characteristics acquired?
through eating foods that are high in proteins
through genes that are inherited from their parents
through interactions with other aquatic species in the ocean
through contact with their siblings
6
Which of the following would lead to a change in current scientific theory?
A change in the world's opinion
The person who originally developed the theory can make changes
A small group of scientists who studied the theory can make changes
A change in the scientific evidence regarding the theory
7
The Bald Eagle and Grizzly Bear both hunt Salmon. Which relationship would they most likely exhibit ?
Parasitism
Mutualism
Commensalism
Competition
8
Which of the following describes plant cells but NOT animal cells?
Mitochondria produce energy through respiration
Chloroplasts produce sugar during photosynthesis
The cell membrane regulates what enters the cell
The nucleus contains the chromosomes
9
A bee pollinates a flower and gets nectar from the flower in return. This is an example of which kind of relationship ?
commensalism
Mutualism
Parasitism
competition
10
Which number identifies the organelle that functions to store water and dissolve salts?
3
2
1
4
11
A Dependent Variable is the one that we Observe
False
True
12
A mouse has fur that is exactly the same color as the sand in its area. Which statement BEST describes this change?
The change is fatal. Most mutations lead to cancer and death
The change is neutral. There is no benefit to being as dark as the sand
The change is harmful. Other mice will not see the darker mouse
The change is beneficial. The mouse will be harder for predators to see
13
What are the products for photosynthesis?
Oxygen
Carbon Dioxide
Oxygen and Glucose
Glucose
14
Which of these best describes how a scientific explanation becomes widely accepted?
the results are partially supported by the scientific evidence
the results confirmed with evidence and debated by the scientific community
A hypothesis is debated by the scientific community
A hypothesis is tested repeatedly, and the results of the test are debated
15
The levels of organization in the human body are arranged from least complex to most complex. Which is the lowest?
organism
organ
tissue
organs system
16
What makes an experiment valid?
The experiment was repeated, and the same results were obtained each time
The experiment has more than one test variable (independent variable)
All the members of the research team came to the same conclusion
The experiment had a control setup
17
What is the Purpose of Cellular Respiration ?
To help us breathe
To make Glucose
To break down Glucose into ATP, energy the cell can use.
To break down food
18
What is needed to start photosynthesis?
ATP
Carbon Dioxide and Water
Water
Oxygen and Water
19
An Independent variable is one that IS manipulated in an experiment.
True
False
20
Are most animals multicellular or unicellular?
unicellular
multicellular
