18 Questions
Match the following stages of metabolic pathway evolution with their corresponding energy sources:
Glycolysis = Preformed organic molecules (e.g. glucose) Photosynthesis = Energy from sunlight Oxidative metabolism = Oxygen (O2) ATP energy pathway = Sunlight and glucose
Match the following molecules with their roles in metabolic pathways:
ATP = Source of energy for metabolic reactions CO2 = Starting material for organic molecule synthesis H2S = Electron acceptor in photosynthesis H2O = Source of energy for glycolysis
Match the following metabolic pathways with their outcomes:
Glycolysis = Conversion of glucose to ATP Photosynthesis = Production of oxygen (O2) Oxidative metabolism = Use of oxygen (O2) for energy ATP energy pathway = Synthesis of organic molecules
Match the following molecules with their roles in photosynthesis:
H2S = Electron acceptor H2O = Source of electrons CO2 = Starting material for organic molecule synthesis O2 = By-product of photosynthesis
Match the following stages of metabolic pathway evolution with their corresponding environmental impacts:
Glycolysis = No significant environmental impact Photosynthesis = Release of oxygen (O2) into the atmosphere Oxidative metabolism = Increased energy efficiency ATP energy pathway = Change in Earth's atmosphere
Match the following metabolic pathways with their energy yield:
Glycolysis = Limited energy yield Photosynthesis = High energy yield from sunlight Oxidative metabolism = High energy yield from oxygen ATP energy pathway = Variable energy yield
Match the following statements about oxidative metabolism with their corresponding descriptions:
Selective advantage = Created with the increase in atmospheric O2 for organisms capable of using O2 in energy-producing reactions Efficiency of energy production = Equivalent to 36 to 38 molecules of ATP from glucose breakdown Reactivity of O2 = A highly reactive molecule Anaerobic glycolysis comparison = Yields 2 ATP molecules
Match the following characteristics of prokaryotes with their corresponding descriptions:
Primitive existence = First living things on Earth, found in 3.4 million-year-old rocks Present-day forms = Divided into two groups: Archaebacteria and Eubacteria Photosynthetic capabilities = Some prokaryotes found to be photosynthetic Theory of evolution = All forms of life evolved from original prokaryotes ~ 3.5-4.0 billion years ago
Match the following types of organisms with their corresponding environments:
Thermoacidophiles = Hot sulfur springs (~ 80C and pH value as low as 2) Archaebacteria = Extreme environments Eubacteria = Varied environments Prokaryotes = Primitive Earth
Match the following energy-related processes with their corresponding ATP yields:
Complete oxidative breakdown of glucose = 36 to 38 ATP molecules Anaerobic glycolysis = 2 ATP molecules Oxidative metabolism = More efficient than anaerobic glycolysis Photosynthetic reactions = Not mentioned
Match the following statements about prokaryotes with their corresponding timeframes:
Fossil discovery = 3.4 million-year-old rock in Africa Evolution of life = 3.5-4.0 billion years ago Present-day existence = Divided into two groups: Archaebacteria and Eubacteria Ancient rock discovery = Older rocks in Australia
Match the following types of prokaryotes with their corresponding characteristics:
Archaebacteria = Live in extreme environments Eubacteria = Present-day bacteria Thermoacidophiles = Live in hot sulfur springs Prokaryotes = First living things on Earth
Match the following organelles with their functions in eukaryotic cells:
Mitochondria = Generating ATP from glucose Chloroplast = Site for oxidative metabolism Nucleus = Translation of RNA into proteins Cytoskeleton = Compartments for metabolic activities
Match the following cellular components with their characteristics:
Eukaryotes = Contain a variety of cytoplasmic organelles Prokaryotes = Have a nucleus Plasma membrane = Contains genetic information Ribosomes = Site for DNA replication and RNA synthesis
Match the following eukaryotic cell features with their advantages:
Cytoplasmic organelles = Allows for compartmentalization of metabolic activities Linear DNA = Enables efficient energy metabolism Cytoskeleton = Provides support for cell shape Nucleus = Responsible for generating ATP from glucose
Match the following cellular structures with their functions:
Plasma membrane = Surrounds the cell and regulates what enters and leaves Nucleus = Contains genetic information Ribosomes = Site for protein synthesis Cytoskeleton = Provides support for cell shape and movement
Match the following eukaryotic cell features with their benefits:
Membrane-enclosed organelles = Enables efficient energy metabolism Linear DNA = Provides a site for DNA replication and RNA synthesis Cytoskeleton = Supports cell shape and movement Nucleus = Regulates what enters and leaves the cell
Match the following eukaryotic cell features with their characteristics:
Mitochondria = Found in almost all eukaryotic cells Chloroplast = Responsible for generating ATP from glucose Eukaryotes = Have a variety of membrane-enclosed organelles Prokaryotes = Have a cytoskeleton
Evolution of cellular energy production mechanisms, including ATP, glycolysis, photosynthesis, and oxidative metabolism. Understand the stages of energy production and molecule synthesis.
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