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Unit 1 Test Review Biology Flashcards | StudBud
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Unit 1 Test Review Biology
Unit 1 Test Review Biology
41 terms
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-scientific method -biogeochemical cycles -food webs -human impacts -symbiosis
Flashcards
41 cards
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Practice quiz
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Questions
41
Answers
1
A hypothesis is only scientifically useful if it
can be tested
can be proven incorrect
can be proven correct
the answer is already known
2
How does winter hibernation benefit a bear?
Bears can rest so they will be faster in the spring
The energy needed to store fat is increased
Bears can save energy when food becomes scarce
The bear is safe from hunters
3
Which of the following organisms is a decomposer?
Tree
Mushroom
Vulture
Fox
4
Which of these organisms would most likely be found at the top of an energy pyramid?
Sharks
Clams
Sardines
Kelp
5
Many types of birds expend large amounts of energy to migrate, how is this worth while?
They find an abundant supply of food and safer nesting areas
Birds expend little energy when they fly and stop often
It is an insticnt that birds retain, it has little purpose
Birds must change food sources
6
Excessive use of fertilizers followed by heavy rainfall can cause
Flooding
Increased populations of fish
climate change
Algae blooms
7
What do the arrows in the food chain indicate about the flow of energy in an ecosystem?
Energy is continuously recycled by organisms in an ecosystem
Energy flows in one direction, from producers to consumers
Energy flow in one direction, from consumers to producers
More of the energy is given to large animals than small
8
The ecosystem level of organization includes which of the following?
community, populations, and their environment
just populations
community and population
Just community
9
Organisms that get their energy by eating other organisms are called
Consumers
Autotrophs
Photosynthesizers
Heterotrophs
10
How do animals obtain their needed carbon?
By consuming plants and other animals
By foraging for it in the soil
Through conducting their own photosynthesis
By inhalation of the carbon dioxide in the air
11
An example of a biotic factor could be...
Grass
Rock
Water
Air
12
Many organisms can NOT use Nitrogen in gas form (N2). What organism converts N2 so it's useful?
Consumers
All decomposers
Producers
Nitrogen-fixing Bacteria
13
Humans have impacted the biogeochemical cycles of the earth by...
cutting down forests
driving more cars that burn fossil fuels
all of these
making more factories
14
The ability for an organism to maintain relatively stable internal conditions is called
evolution
homeostasis
photosynthesis
metabolism
15
Each step in an energy pyramid is called a...
Consumer
Nutrient Cycle
Food Chain
Trophic Level
16
Liquid water returns to the atmosphere as a gas during ?
Evaporation
Condensation
Absorption
Transpiration
17
Decomposers are important in an ecosystem because they...
Are microscopic and other organisms can't consume them
Produce their own food using light from the sun
Stop the flow of energy from one organism to another
Break down dead organisms & recycle nutrients into the soil
18
Nitrogen fixation is the process in the nitrogen cycle that...
Bacteria in the roots of plants turn N2 gas into usable form
Bacteria in the soil turn nitrogen back into N2 gas
Nitrogen is removed from dead organisms to be used
Nitrogen is moved into the oceans
19
In a controlled experiment, a scientist can isolate and test
several variables
a mass of information
a conclusion
a single variable
20
The sun powers all of these cycles except which one?
Carbon cycle
Water cycle
Nitrogen cycle
21
Humans are negatively affecting the Carbon cycle by
Burning fossil fuels and putting Carbon into the atmosphere
Planting trees
Using fertilizers
Storing excess carbon underground
22
Water, Carbon, and Nitrogen moving between living and non-living parts of the earth are called
biogeochemical cycles
Energy cycles
feeding relationships
weather
23
"The cheetah is probably hunting" is an example of a/an
observation
conclusion
hypothesis
inference
24
If herbivores eat plants to get energy, where do plants get their energy?
Soil
Wind
Water
Sun
25
The work of scientists begins with
Asking questions
Drawing conclusions
Collecting data
Conducting experiments
26
The correct order of the scientific method is..
experiment, question, hypothesis, analyze, conclusion
analyze, question, hypothesis, experiment, conclusion
question, experiment, hypothesis, analyze, conclusion
question, hypothesis, experiment, analyze, conclusion
27
A scientist tests the effect of sunlight on plant growth. The independent variable is
sunlight
water
height of plant
soil
28
Which statement best describes the flow of energy through organisms in a energy pyramid?
Energy flows from top to bottom increasing at each level
Energy flows from bottom to top increasing at each level
Energy flows from top to bottom decreasing at each level
Energy flows from bottom to top decreasing at each level
29
How does water move from the atmosphere to Earth's surface?
evaporation
precipitation
transpiration
absorption
30
How do organisms use Nitrogen?
To use for energy
To build proteins and DNA
To breathe
To help bacteria convert it into ammonia
31
There are groups of frogs, fish, and snakes that interact with each other they would be called
an ecosystem
a community
a biosphere
a population
32
The 6 essential elements for living things are
CHOPS
CHNIBS
ABCDEF
CHNOPS
33
Biotic factors include organisms that were once alive but are now dead: True or False?
True
False
34
Carbon dioxide gas is generated through which process in the carbon cycle?
Cellular Respiration
Evaporation
Nitrification
Photosynthesis
35
Why might a predator switch the type of prey it feeds on?
Less energy is needed to catch the new prey
More energy is needed to catch the new prey
Some prey tastes better than other prey
Predators lose energy by preying on the same food type
36
An example of an abiotic factor would be...
Pebbles
Grass
Tree Branch
Fossil
37
Consumers that eat only plants are called
herbivores
carnivores
omnivores
plants
38
Carbon can be found in which of these organic compounds?
All of these are correct
carbohydrates
lipids (fats, oils, waxes)
DNA
39
Primary producers are organisms that...
Rely on other organisms for their food supply
Use energy taken in from the environment to make food
Consume plant and animal remains and other dead matter
Obtain energy by only eating plants
40
The amount of energy transferred from one level to another in a food chain/web is about:
1%
60%
10%
25%
41
Which of the following describes how ALL consumers get their energy?
Directly from the sun
From eating producers
From eating organisms that are living or were once living
From inorganic chemicals like hydrogen sulfide
