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BIO AP Cell Respire

Cellular Respiration with and Without Oxygen- Dale created

QuestionAnswer
Define cellular respiration break down sugar into CO2 + H2O + ATP
each step of cellular respiration is catalyzed by an enzyme
Is cellular respiration with or without oxygen? Either way
What is aerobic respiration with oxygen. oxygen is the oxydizing agent that RECEIVES electrons from the decomposed substrates
what is anerobic respiration without oxygen. Since there is no oxygen, a nitrogen or sulfur may substitute for oxigen.
the raw materials for aerobic respiration are carbohydrates, fats, proteins
In the big picture, what is the formula for cellular respiration with oxygen? C6H12O6 + 6O2 --enzymes--> 6CO2 + 6H20 +energy
When aerobic respiration oxygizes a molecule of glucose, does it release energy as 1 step or in small little steps? why? if release as one step,there would be so much energy released that the cell would 'burn up' from heat and would waste energy
Aerobic respiration happens in 3 stages, what are the 3 stages? 1. glycolysis 2. krebs cycle 3. electron transport system
What happens in the glycolysis phase? enzymes oxydize glucose and split it into 2 3-carbon molecules(called pyruvic acid) + some ATP
What happens in the Krebs cycle phase? The two 3-carbon molecules (pyruvic acid) that were produced in glycolysis are now completely oxidized into CO2 + more ATP
True or false? whenever one substance is oxidized, another must be reduced true
We said that glycolysis produces some ATP. Glycolysis also requires ATP as input. What is the net # of ATP moledules produced by glycolysis 2 ATP net. 2 ATP are invested 4 ATP are produced like getting 100% interest on your investment
What happens to NADH in glycolysis phase? NAD+ accepts a pair of high energy electrons to become NADPH. NADH's job is to hold the electrons and help pass the energy to the next stage. (for exmaple, in aerobic, sends the energy to the electron transport chain.
The glycolysis phase itself, of respiration, does glycolysis require oxygen or not? no
The step of glycolysis takes place where in the cell? cytoplasm
The step of Krebs cycle takes place where in the cell? mitochondrion
The step of Electron transport chain takes place where in the cell mitochondrion
When O2 is not present, the stage after glycolysis is fermentation
Define fermentation release energy from food molecules in absence of oxygen
the two main types of fermentation are: 1. alcohol fermentation 2. lactic acid fermentation
What is the overall formula for alcohol fermentation: pyruvic acid + NADH ----> alcohol + CO2 + NAD+
What are the end products of alcohol fermentation? alcohol, CO2 and NAD+ It can cause bread to rise. The bubbles you see in bread are CO2 bubbles
What is the overall formaula for lactic acid fermentation? pyruvic acid + NADH ---> lactic acid + NAD+
What are a couple of real world examples of lactic acid fermentation? 1. in your muscles when you exercise hard (can't get enough oxygen so it is anerobic) 2. unicellular organisms produce lactic acid as a waste product. For example prokaryotes are used to make cheese and yogurt and sour cream.
Who is the Krebs cycle named after? Hans Krebs, british biochemist, discobered it in 1937. He discobered that pyruvic acid is broken down into CO2 + energy in a series of reactions.
What's another name for the Krebs cycle? the citric acid cycle....because citric acid is the first compound formed in the Krebs cycle.
In the big picture, what is the output of the Krebs cycle? generates high-energy electrons that are passed to NADH and FADH2 which then go to the electron transport chain
How much ATP is produed by 1 molecule of glucose in ANEROBIC respiration just 2 ATP
How much ATP is produced by 1 molecule of glucose in aerobic respiration? 36 ATP
How are the formulas for Photosynthesis and Cellular Respiration with oxygen similar or different? Exact opposites. photosynthesis: 6CO2 + 6H2O ---->C6 H12 O6 + 6 O2 (energy required) Cellular respiration 6O2 + C6H12O6--->6CO2 + 6 H2O (releases energy)
Created by: stinglasher23
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