BCHS 3304 - Intro to Metabolism (Part 1) Questions
and CORRECT Answers
metabolism
the process through which living systems acquire and utilize free energy to carry out their
functions
metabolism is divided in
catabolism and anabolism
catabolism
- degradation
- releases energy --> exergonic
- large molecules (like carbs fats, proteins) are broken down into smaller pieces
- spontaneous
- often involves oxidation (losing electrons)
- creates ATP or NADPH
- ex: digesting food or breaking down glucose in glycolysis
anabolism
- biosynthesis
- requires energy --> endergonic
- small molecules are combined to make bigger ones (like proteins DNA, glycogen)
- nonspontaneous
- uses ATP and NADPH
, energy released from catabolism (exergonic) is used to power
anabolism (endergonic)
ATP
- is the energy from catabolism stored
- provides energy for anabolic processes
- charged during catabolism
- used during anabolism
nutrition
relates to the intake and utilization of food, which supplies both the energy that powers life
process, and the raw materials to build and repair body tissues
autotrophs
- make their own food
- don't need to eat other organisms
- can build everything from simple molecules such as H2O, CO2, NH3, and H2S
- two types: chemolithotrophs and photoautotrophs
chemolithotrophs
- get energy by oxidizing inorganic substances
- ex: NH3, H2S, and Fe2+
- no sunlight needed
photoautotrophs
and CORRECT Answers
metabolism
the process through which living systems acquire and utilize free energy to carry out their
functions
metabolism is divided in
catabolism and anabolism
catabolism
- degradation
- releases energy --> exergonic
- large molecules (like carbs fats, proteins) are broken down into smaller pieces
- spontaneous
- often involves oxidation (losing electrons)
- creates ATP or NADPH
- ex: digesting food or breaking down glucose in glycolysis
anabolism
- biosynthesis
- requires energy --> endergonic
- small molecules are combined to make bigger ones (like proteins DNA, glycogen)
- nonspontaneous
- uses ATP and NADPH
, energy released from catabolism (exergonic) is used to power
anabolism (endergonic)
ATP
- is the energy from catabolism stored
- provides energy for anabolic processes
- charged during catabolism
- used during anabolism
nutrition
relates to the intake and utilization of food, which supplies both the energy that powers life
process, and the raw materials to build and repair body tissues
autotrophs
- make their own food
- don't need to eat other organisms
- can build everything from simple molecules such as H2O, CO2, NH3, and H2S
- two types: chemolithotrophs and photoautotrophs
chemolithotrophs
- get energy by oxidizing inorganic substances
- ex: NH3, H2S, and Fe2+
- no sunlight needed
photoautotrophs
