Biology Unit 3 Lesson Questions
A molecule composed of adenine (nitrogenous base), ribose, and three phosphates is known as _____.
ATP
Most potential energy captured from food molecules is stored as __________.
ATP
You are a _____ consumer if you feed on secondary consumers.
tertiary
You are generally considered a _______ consumer in the food chain.
tertiary
If energy can't be created according to the first law of thermodynamics, where does it initially come from?
the Sun
What is the definition of energy?
the ability to do work
Organisms capture energy from
the environment
In oxidation,__________ is needed to create a chemical reaction.
Oxygen
ADP to ATP by
Phosphorylation
Food chains and webs not only describe the order in which organisms are eaten, but they also describe the _____.
flow of energy in an ecosystem
A series of connections of food chains in an ecosystem is called a _____ .
food web
A person holding a bow has just released an arrow from the bow. The arrow shoots forward toward its target. What type of energy is being described?
kinetic
Enzymes ________ the activation energy threshold required to start a chemical reaction.
lower
If you ate a hamburger, you would probably only get about _____ of the original energy from the Sun.
0.01%
About how much energy is transferred from a primary consumer to a secondary consumer?
0.1% of the original energy from the Sun
ATP to ADP by
Dephosphorylation
________is a fuel your body uses for energy.
Glucose
All of the following are forms of energy a living organism can use except:
Nuclear
All of the following are examples of limiting factors in an ecosystem except:
Population density
Which of the following is an example of energy changing from one form to another?
a fire
Metabolic pathways _____.
control the flow of energy control enzyme activity can be linear or branched out
According to the second law of thermodynamics, heat energy released by an organism is
released into the environment and unusable
Most energy in an ecosystem originally comes from _____.
the Sun
_____ switch on enzyme activity, while ____ can switch off or reduce enzyme activity.
activators; inhibitors
Mr. Jones tells his students that energy cannot be created, it must be captured from the environment. He is talking about the
first law of thermodynamics
Glycolysis
process that fuels your metabolism
In the food chain, ____ can make their own food.
producers
You have an ecosystem with the following organisms: birds, fruit trees, tigers, and monkeys. Which list would best describe the food chain?
fruit trees, birds/monkeys, tigers,
Which of the following is not a form of energy?
matter
Cellular ___________ is all of the chemical reactions in cells.
metabolism
In a food chain, energy flow begins with _____, which feed all life.
plants
A person is standing with a drawn bow and arrow. He is aiming it at a bull's eye. What type of energy is being described?
potential
Stored energy is
potential energy
Living organisms that are able to make their own food are _____.
producers
The universe tends to move to a state of entropy or
Disorder
A plant absorbs energy from the Sun. Where does the energy go from there?
Some of the energy is stored in the plant's tissues and the rest is released as heat energy.
A primary consumer gets energy from a producer. Where does the energy go from there?
Some of the energy is used for metabolism and the rest is released as heat energy.
Which statement best describes energy of an ecosystem?
The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.
Energy required for life mostly comes from _____.
solar energy
Where does the primary source of energy needed for life come from?
solar energy
______ are the primary decomposers.
1. Bacteria 2.Fungi
Which of the following apply to food webs?
1. Food webs are a group of connected food chains. 2. Arrows in a food web go from the organism that is being eaten to the organism that is eating it. 3. Arrows in a food web represent the flow of energy in a food web. 4. Food webs show all of the eating patterns in an ecosystem.
Predict which of the following can impact an ecosystem's available resources?
1. Long term drought 2. Change of season from winter to summer 3. A forest fire
Life cycles recycle matter and help to create balance on Earth because _____.
1. living organisms are dependent on other living organisms to survive 2. producers make their own food, consumers gain energy from producers, and decomposers break down dead matter into essential nutrients that are then reused by producers 3.producers gain energy from the Sun, consumers gain energy from producers, and decomposers gain energy from dead consumers and recycle it back to producers
A food chain or food web can provide good information including _____.
1. the flow of energy in an ecosystem 2. the eating patterns of organisms 3. how much energy is transferred from one organism to another
About how much energy is transferred from a producer to a primary consumer?
10% of the plant's energy
Do you get all the energy from a piece of fruit you eat?
No, because some of the energy is dispersed as heat.
_______ play a vital role in recycling nutrients and creating a balance of Earth's materials.
decomposers
When ATP is converted to ADP, ____________ occurs.
dephosphorlyation
The relationships between a community of plants and animals and their environment are known as a(n) _____.
ecosystem
