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