Question

What is the correct term for organisms that consume other organisms in order to gain matter and nutrients?(3 points)
Responses

decomposers
decomposers

autotrophs
autotrophs

heterotrophs
heterotrophs

detritivores
detritivores
Question 2
What is the major difference between the position of producers and primary consumers in the food chain?(3 points)
Responses

Primary consumers make up the second level of the food chain, while producers make up the first level of the food chain.
Primary consumers make up the second level of the food chain, while producers make up the first level of the food chain.

Primary consumers make up the first level of the food chain, while producers make up the last level of the food chain.
Primary consumers make up the first level of the food chain, while producers make up the last level of the food chain.

Primary consumers make up the second level of the food chain, while producers make up the third level of the food chain.
Primary consumers make up the second level of the food chain, while producers make up the third level of the food chain.

Primary consumers make up the last level of the food chain, while producers make up the first level of the food chain.
Primary consumers make up the last level of the food chain, while producers make up the first level of the food chain.
Question 3
As energy is passed through the food chain, some of the energy is lost as heat. What is the approximate amount of energy that is passed from one trophic level to the next?(3 points)
Responses

10 percent
10 percent

75 percent
75 percent

15 percent
15 percent

50 percent
50 percent
Question 4
In the image, which animal is tertiary consumer?



(3 points)
Responses

mouse
mouse

lion
lion

rabbit
rabbit

jackal
jackal
Question 5
(3 points)
Responses

10,000 kJ
10,000 kJ

1,000 kJ
1,000 kJ

100 kJ
100 kJ

10 kJ
10 kJ
Question 6
The ultimate source of energy for most organisms is:(3 points)
Responses

glucose
glucose

the sun
the sun

carbon dioxide
carbon dioxide

oxygen
oxygen
Question 7
Which of the following is the best evidence that supports the rule that only 10% of energy is transferred from one organism to another? (1 point)
Responses

Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.

Not all organisms at the lower trophic levels will be eaten and die.
Not all organisms at the lower trophic levels will be eaten and die.

Ten percent of organisms are fully consumed while others contain some molecules that can not be digested.
Ten percent of organisms are fully consumed while others contain some molecules that can not be digested.

There are fewer organisms at the top of the food chain because there is less energy available for life processes.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
Question 8
(3 points)
Responses

respiration; photosynthesis; heat
respiration; photosynthesis; heat

respiration; photosynthesis; waste
respiration; photosynthesis; waste

photosynthesis; respiration; waste
photosynthesis; respiration; waste

photosynthesis; respiration; heat
photosynthesis; respiration; heat
Question 9
Do both animal and plant cells have mitochondria? Why or why not?(3 points)
Responses

No; plants don't perform any processes for which mitochondria would be used.
No; plants don't perform any processes for which mitochondria would be used.

No; plants use chloroplasts the way animals use mitochondria.
No; plants use chloroplasts the way animals use mitochondria.

Yes; they both need mitochondria to convert radiant energy into chemical energy.
Yes; they both need mitochondria to convert radiant energy into chemical energy.

Yes; they both need mitochondria for cellular respiration.
Yes; they both need mitochondria for cellular respiration.
Question 10
Chemosynthesis relies on which energy source:(3 points)
Responses

light
light

nuclear
nuclear

thermal
thermal

chemical
chemical
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Answer 1

Here are the correct answers for each question:

**Question 1:**
The correct term for organisms that consume other organisms in order to gain matter and nutrients is **heterotrophs**.

**Question 2:**
The major difference between the position of producers and primary consumers in the food chain is:
**Primary consumers make up the second level of the food chain, while producers make up the first level of the food chain.**

**Question 3:**
The approximate amount of energy that is passed from one trophic level to the next is:
**10 percent.**

**Question 4:**
Without the image to refer to, I can't definitively determine which animal is the tertiary consumer based on the options. Generally, in a typical food chain, a lion would be a tertiary consumer. If the lion is at the top and other options are at lower levels, then:
**lion** would likely be the tertiary consumer.

**Question 5:**
Assuming the context of the previous questions focuses on energy transfer in a food chain where the starting energy is given, without additional context, typically:
**10,000 kJ** is often used in food chain examples to represent the energy at the producer level.

**Question 6:**
The ultimate source of energy for most organisms is:
**the sun.**

**Question 7:**
The best evidence that supports the rule that only 10% of energy is transferred from one organism to another is:
**There are fewer organisms at the top of the food chain because there is less energy available for life processes.**

**Question 8:**
The correct sequence regarding the processes in energy exchange would be:
**photosynthesis; respiration; heat.**

**Question 9:**
Both animal and plant cells have mitochondria because:
**Yes; they both need mitochondria for cellular respiration.**

**Question 10:**
Chemosynthesis relies on which energy source:
**chemical.**

If you have further questions or need additional clarification on any of the answers, feel free to ask!