Which process in eukaryotic cells will proceed normally whether oxygen O2 is present or absent?
Cellular Respiration
| Question | Answer |
|---|---|
| Which process in eukaryotic cells will proceed normally whether oxygen (O2) is present or absent? | glycolysis |
| d. The end products of glycolysis are CO2 and H2O.—-True or False? | false |
| 2 ATP—-> 2 ADP involves an exergonic or endergonic reaction? | endergonic |
What occurs when O2 is not present?
When there is no oxygen for cellular respiration, then some of the cells and microorganisms undergo anaerobic respiration or fermentation. Pyruvate produced by glycolysis is converted to alcohol or acid and NADH is reoxidised to NAD+ to continue getting energy through glycolysis.
Can glycolysis occur with or without oxygen?
Glycolysis requires no oxygen. It is an anaerobic type of respiration performed by all cells, including anaerobic cells that are killed by oxygen.
Which process will proceed with or without oxygen?
Cellular respiration can occur both aerobically (using oxygen), or anaerobically (without oxygen). During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell….Aerobic vs anaerobic respiration.
| Aerobic | Anaerobic | |
|---|---|---|
| Location | Cytoplasm (glycolysis) and mitochondria | Cytoplasm |
How glycolysis occurs in absence of oxygen also?
In the absence of oxygen, homolactic fermentation prevents NADH from accumulating, which would halt glycolysis and rob the cell of its energy source. Fermentation doesn't yield any ATP molecules, but it does allow glycolysis to continue and producing a small trickle of ATPs.
What process follows glycolysis in the absence of oxygen?
Fermentation follows glycolysis in the absence of oxygen. Alcoholic fermentation produces ethanol, carbon dioxide, and NAD+. Lactic acid fermentation produces lactic acid (lactate) and NAD+.
Which of the following pathway can occur in absence of oxygen during respiration?
Glycolysis, which is the first step in all types of cellular respiration is anaerobic and does not require oxygen. If oxygen is present, the pathway will continue on to the Krebs cycle and oxidative phosphorylation. However, if oxygen is not present, some organisms can undergo fermentation to continually produce ATP.
Can oxidative phosphorylation occur without oxygen?
Its important to note that oxygen must be present for oxidative phosphorylation to occur. Water is formed as oxygen receives the electrons from protein complex 4, and combines with protons on the inside of the cell.
What is the role of o2 in oxidative phosphorylation?
In oxidative phosphorylation, oxygen must be present to receive electrons from the protein complexes. This allows for more electrons and high energy molecules to be passed along, and maintains the hydrogen pumping that produces ATP.
What occurs during oxidative phosphorylation?
Oxidative phosphorylation is the process by which ATP synthesis is coupled to the movement of electrons through the mitochondrial electron transport chain and the associated consumption of oxygen.
Which of the following occurs during oxidative phosphorylation?
Which of the following occurs during oxidative phosphorylation? –Protons (H+) are transferred into the intermembrane space as electrons move through the electron transport chain.
Does oxidative phosphorylation require oxygen?
In oxidative phosphorylation, oxygen must be present to receive electrons from the protein complexes. This allows for more electrons and high energy molecules to be passed along, and maintains the hydrogen pumping that produces ATP.
What occurs during oxidative phosphorylation quizlet?
A process occurring in the mitochondria that results in the formation of ATP from the flow of electrons across the inner membrane to bind with oxygen.
Where is oxidative phosphorylation occur?
mitochondria Most of the usable energy obtained from the breakdown of carbohydrates or fats is derived by oxidative phosphorylation, which takes place within mitochondria.