Producers are always.....? (Heterotrophs, autotrophs or plants)
Autotrophs
100
What does the second law of thermodynamics state?
It states that energy transfers and transformations increases the entropy pf the universe.
100
Define metabolism
The sum of all the chemical changes taking place in an organism.
100
How does decomposition release free energy?
Through a process of decomposition called oxidation.
200
What is energy?
Energy is the capacity to do work or to cause Change.
200
Define Decomposer and classify it as a heterotroph or Autotroph.
Decomposers are hetetrophs that break down and use dead plants and animals for energy.
200
What is the key to maintaining organization in all living systems?
Energy
200
What are the 2 types of metabolism?
Synthesis and Decompostion
200
what is oxidation?
It is the removal of electrons from a molecule , certain bonds are broken and rearranged.
300
What is the energy that organisms store in their organic molecules?
Chemical Energy
300
What does the law of conservation of energy state?
It states that energy cannot be created nor destroyed, but it can change form.
300
What is needed to start a Reaction?
Activation Energy
300
what is decomposition and synthesis?
Decomposition- break-down of reactions
Synthesis-Build- up of reactions
300
What is ATP?
ATP is adenosine triphosphate. a compound that has three phosphate groups and is used by cells to store energy and to fuel many metabolic processes.
400
list 2 groups that organisms can be classified in and how does each one obtain its energy?
Heterotroph- Obtain Energy and nutrients from other organisms.
Autotrophs- obtain energy from non living organisms such as the sun and minerals
400
Distinguish between Habitat , ecosystem, and Biosphere.
Habitat- Each ecosystem has this (ex:the shore of a pond)
Ecosystem- made up of biotic and Abiotic components of a particular place.
Biosphere- Are all ecosystems combined
400
What is the specialized protein that all living cells contain and what does it lower inorder to make a reaction proceed?
Enzymes and it lowers activation energy
400
what does biosynthesis enable organisms to do?
Grow and Maintain their structure.
400
What is ADP?
Adenosine diphosphate ; the compound that remains when a phosphate group is removed from ATP, releasing energy.
500
What is the raw material that gives us energy known as and what does it do?
The raw material is Nutrients and it is needed to make complex molecules and to increase cellular organization during growth
500
What is the important difference between living and nonliving systems?
The important difference between living and nonliving systems is the ability of living systems to conserve and use some of the energy released in chemical reactions.
500
Explain substrate and Active site
substrate- Reactants in a reaction( a molecule on which enzymes act)
Active Site- the portion of an enzyme that attaches to the substrate through weak chemical bonds.
500
What do decomposition reactions release and why?
They release free energy because they produce simple molecules from complex molecules, which increase entropy.
500
When an ATP molecule is involved in chemical reaction what happens to the bond , which bond, and what is released?
a- The bond breaks b- the bond between the second and third phosphate groups c- Free energy is released