these organisms still need atp for energy.
the way they make their atp is very similar to how other organisms
make atp.
what is the source of energy for organisms that use
chemosynthesis?

4.1 vocabulary check
atp chemosynthesis
adp
mark it up
go back and highlight
each sentence that
has a vocabulary
word in bold.
choose the correct term from the list for each description.
1. high - energy molecule with 3 phosphates
2. lower - energy molecule with 2 phosphates
3. use of chemicals as an energy source

4.1 the big picture
4. label the atp and adp molecules in the diagram below.

5. the word beginning chemo - means \chemical.\ synthesis means \mak -
ing something through chemical reactions.\ how does the meaning
of the word parts relate to the meaning of the term chemosynthesis?

Question

these organisms still need atp for energy.
the way they make their atp is very similar to how other organisms
make atp.
what is the source of energy for organisms that use
chemosynthesis?

4.1 vocabulary check
atp chemosynthesis
adp
mark it up
go back and highlight
each sentence that
has a vocabulary
word in bold.
choose the correct term from the list for each description.
1. high - energy molecule with 3 phosphates
2. lower - energy molecule with 2 phosphates
3. use of chemicals as an energy source

4.1 the big picture
4. label the atp and adp molecules in the diagram below.

5. the word beginning chemo - means \chemical.\ synthesis means \mak -
ing something through chemical reactions.\ how does the meaning
of the word parts relate to the meaning of the term chemosynthesis?

Accepted Answer

### Question 1
# Brief Explanations:
ATP (adenosine triphosphate) is a high - energy molecule that has three phosphate groups. By recalling the definition of ATP, we can match it with the description "high - energy molecule with 3 phosphates".
# Answer:
ATP

### Question 2
# Brief Explanations:
ADP (adenosine diphosphate) is a lower - energy molecule compared to ATP and it has two phosphate groups. Based on the definition of ADP, it fits the description "lower - energy molecule with 2 phosphates".
# Answer:
ADP

### Question 3
# Brief Explanations:
Chemosynthesis is defined as the process where organisms use chemicals as an energy source to produce organic compounds. So, the term "chemosynthesis" matches the description "use of chemicals as an energy source".
# Answer:
chemosynthesis

### Question 4
# Brief Explanations:
In the ATP - ADP cycle diagram, the molecule with three phosphate groups ( - P - P - P attached to the adenosine part) is ATP, and the one with two phosphate groups ( - P - P) is ADP. Looking at the diagram, the upper molecule with three phosphate groups should be labeled ATP, and the lower molecule with two phosphate groups should be labeled ADP.
# Answer:
- Upper molecule (with three phosphate groups): ATP
- Lower molecule (with two phosphate groups): ADP

### Question 5
# Brief Explanations:
The prefix "chemo - " means chemical, and "synthesis" means making something through chemical reactions. In chemosynthesis, organisms use chemical energy (from inorganic chemicals like hydrogen sulfide, ammonia etc.) to synthesize organic compounds (like glucose) from inorganic substances. So the meaning of the word parts relates to chemosynthesis as it is the process of making (synthesis) organic matter using chemical (chemo - ) energy sources.
# Answer:
The prefix "chemo - " means chemical and "synthesis" means making through chemical reactions. Chemosynthesis is the process where organisms use chemical energy (from inorganic chemicals) to synthesize organic compounds from inorganic substances, so the word parts' meanings combine to describe the process of using chemicals to make (synthesize) organic matter.

### "Instant Replay" Question
# Brief Explanations:
Organisms that use chemosynthesis, such as certain bacteria (like those in deep - sea hydrothermal vents), get their energy from inorganic chemical compounds. For example, they can use chemicals like hydrogen sulfide, ammonia, or methane as an energy source to produce ATP and organic molecules.
# Answer:
The source of energy for organisms that use chemosynthesis is inorganic chemical compounds (e.g., hydrogen sulfide, ammonia, methane).

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