BISC 261 Exam Questions and answers with complete solutions Latest Updated 2025 |
Verified
Select the two sources of energy available to organisms. - ✔️✔️light
certain chemical compounds
Select the two sources of electrons available to all organisms. - ✔️✔️- Reduced inorganic compounds
- Reduced organic compunds
Select the two sources of carbon available to all organisms. - ✔️✔️CO2
reduced organic compounds
Choose two roles of chemolithoautotrophs in ecosystems. - ✔️✔️They recycle elements from the reduced
inorganic compounds they use as source of energy and electrons.
They are primary producers.
Although sources of energy, electrons, and carbon are diverse, all are used to generate which three
main products? - ✔️✔️reducing power, precursor metabolites, ATP
In general terms, the two sources of energy available for organisms are certain chemicals (e.g.,
carbohydrates, proteins, and fats) and . - ✔️✔️light
Which metabolic pathway does not require oxygen and does not use a proton motive force to generate
ATP energy? - ✔️✔️fermentation
For lithotrophic and organotrophic microbes, the two sources of electrons available for organisms are
reduced organic compounds and . - ✔️✔️reduced inorganic compounds
The complete catabolism of a reduced organic energy source to CO2, using glycolytic pathways and the
TCA cycle, with oxygen as the terminal electron acceptor for electron transport, is called
respiration. - ✔️✔️aerobic
, Together with photoautotrophs, chemolithoautotrophs are important producers in ecosystems.
- ✔️✔️Primary
ATP - ✔️✔️Major molecule used to store energy
Precursor metabolite - ✔️✔️organic molecule that provides carbon skeleton needed for biosynthesis
Reducing power - ✔️✔️supplies electrons for chemical reactions
Which metabolic pathway uses a proton motive force to generate ATP energy but does not require
oxygen? - ✔️✔️anaerobic respiration
Any of the pathways that catabolize glucose to pyruvate can be referred to as - ✔️✔️glycolytic
Select all components of the aerobic respiration of glucose. - ✔️✔️Generation of pyruvate
Glycolytic pathway
Production of CO2
TCA cycle
Which two of the following statements are correct regarding the Embden-Meyerhof pathway? - ✔️✔️Itcan
occur in the absence of oxygen
It results in glucose degredation
In substrate-level phosphorylation, ATP production is coupled with . - ✔️✔️hydrolysis of a
molecule with a higher phosphate transfer potential than ATP
Which of these metabolic pathways result in the catabolism of glucose to pyruvate? - ✔️✔️Entner-
Douderoff
Embden-Meyerhof
Verified
Select the two sources of energy available to organisms. - ✔️✔️light
certain chemical compounds
Select the two sources of electrons available to all organisms. - ✔️✔️- Reduced inorganic compounds
- Reduced organic compunds
Select the two sources of carbon available to all organisms. - ✔️✔️CO2
reduced organic compounds
Choose two roles of chemolithoautotrophs in ecosystems. - ✔️✔️They recycle elements from the reduced
inorganic compounds they use as source of energy and electrons.
They are primary producers.
Although sources of energy, electrons, and carbon are diverse, all are used to generate which three
main products? - ✔️✔️reducing power, precursor metabolites, ATP
In general terms, the two sources of energy available for organisms are certain chemicals (e.g.,
carbohydrates, proteins, and fats) and . - ✔️✔️light
Which metabolic pathway does not require oxygen and does not use a proton motive force to generate
ATP energy? - ✔️✔️fermentation
For lithotrophic and organotrophic microbes, the two sources of electrons available for organisms are
reduced organic compounds and . - ✔️✔️reduced inorganic compounds
The complete catabolism of a reduced organic energy source to CO2, using glycolytic pathways and the
TCA cycle, with oxygen as the terminal electron acceptor for electron transport, is called
respiration. - ✔️✔️aerobic
, Together with photoautotrophs, chemolithoautotrophs are important producers in ecosystems.
- ✔️✔️Primary
ATP - ✔️✔️Major molecule used to store energy
Precursor metabolite - ✔️✔️organic molecule that provides carbon skeleton needed for biosynthesis
Reducing power - ✔️✔️supplies electrons for chemical reactions
Which metabolic pathway uses a proton motive force to generate ATP energy but does not require
oxygen? - ✔️✔️anaerobic respiration
Any of the pathways that catabolize glucose to pyruvate can be referred to as - ✔️✔️glycolytic
Select all components of the aerobic respiration of glucose. - ✔️✔️Generation of pyruvate
Glycolytic pathway
Production of CO2
TCA cycle
Which two of the following statements are correct regarding the Embden-Meyerhof pathway? - ✔️✔️Itcan
occur in the absence of oxygen
It results in glucose degredation
In substrate-level phosphorylation, ATP production is coupled with . - ✔️✔️hydrolysis of a
molecule with a higher phosphate transfer potential than ATP
Which of these metabolic pathways result in the catabolism of glucose to pyruvate? - ✔️✔️Entner-
Douderoff
Embden-Meyerhof
