SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
PCAT Biology Respiration
Start Test
Study First
Subjects
:
pcat
,
biology
Instructions:
Answer 40 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Glycolysis yields 2 ATP/glucose -cell respiration yields 36-38 ATP
Glycolysis vs. cell respiration
Respiration in Annelids
Respiration
Ventilation
2. Disaccharides are hydrolyzed into monosaccharides - most of which can be converted into glucose or glycolytic intermediates
Citric Acid Cycle (Krebs Cycle)
Inhalation
Electron Transport Chain
Carbohydrates
3. Cycle begins when the two carbon acetyl group from acetyl CoA combines with oxaloacetate - a four-carbon molecule - to form the six carbon citrate -For each turn - one ATP is produced by substrate level phosphorylation via a GTP intermediate (e- are
Pyruvate
Transamination Reaction
Internal Respiration
Citric Acid Cycle (Krebs Cycle)
4. The process that produces more than 90% of the ATP used by the cells in our body
Fuel
Alcohol Fermentation
Oxidative Phosphorylation
Medulla Oblongata
5. Reductions occur in a series of these steps
Respiration in Annelids
Citric Acid Cycle (Krebs Cycle)
Oxidative Deamination
Electron Transport Chain
6. Regulated by neurons located in the medulla oblongata
Cellular Respiration
Dehydrogenation
Ventilation
Respiration in Annelids
7. Degraded only wen not enough carbohydrate or fat is available
Proteins
Inhalation
Fermentation
Glycolysis vs. cell respiration
8. The entrance of air into the lungs and the gas exchange between the alveoli and the blood
Pyruvate Decarboxylation
Dehydrogenation
External Respiration
Respiration
9. The exchange of gas exchange between the blood and the cells and the intracellular processes of respiration
Fuel
Alcohol Fermentation
Alternative Energy Sources
Internal Respiration
10. Removes an ammonia molecule directly from the amino acid
Alveol
Citric Acid Cycle (Krebs Cycle)
Oxidative Deamination
Ventilation
11. Occurs only in yeast and some bacteria -the pyruvate produced in glycolysis is converted to ethanol -NAD+ is regenerated and glycolysis can continue
Electron Transport Chain
Cytochromes
Lactic Acid Fermentation
Alcohol Fermentation
12. Aerobic process; oxygen acts as the final acceptor of electrons that are passed from carrier to carrier during the final stage of glucose oxidation -can be divided into three stages: pyruvate decarboxylation - the citric acid cycle - and the electron
Electron Transport Chain
Cellular Respiration
Photosynthesis
Anaerobic Conditions
13. Pyruvate is further oxidized during cell respiration in the mitochondria in the presence of oxygen
Respiration
Aerobic conditions
Dihydroxyacetone Phosphate
Electron Transport Chain
14. Toxic substance in vertebrates
Ammonia
Fuel
Anaerobic Conditions
Medulla Oblongata
15. When amino acids lose an amino group to form an a-keto acid
Fats
Inhalation
Transamination Reaction
Cytochromes
16. ATP synthesis is directly coupled with the degradation of glucose without the participation of an intermediate molecule such as NAD+
Substrate Level Phosphorylation
Respiration in Humans
Alveol
Electron Transport Chain
17. Electron carriers that resemble hemoglobin in the structure of their active site
Glycolysis
Cytochromes
Respiration in Annelids
Alveol
18. Diaphragm contracts and flattens - and the external intercostal muscles contract - pushing the rib cage and chest wall up and out
Electron Transport Chain
Cytochromes
Glycolysis
Inhalation
19. These sources are used by the body in the following preferential order: other carbohydrates - fats - and proteins
Cellular Respiration
Dihydroxyacetone Phosphate
Alternative Energy Sources
Internal Respiration
20. Complex carrier mechanism located on the inside of the inner mitochondrial membrane -During oxidative phosphorylation - ATP is produced when high-energy potential electrons are transferred from NADH and FADH2 to oxygen by a series of carrier molecule
Pyruvate
Exhalation
Lactic Acid Fermentation
Electron Transport Chain
21. Air enters the lungs after traveling througha series of respiratory airways -gas exchange between the lungs and the circulatory system occurs across the very thin walls of the alveol -primary function is to provide the necessary energy for growth - m
Aerobic conditions
Ventilation
Respiration in Humans
Cellular Respiration
22. Occurs in certain fungi and bacteria and in human muscle cells during strenuous activity -glycolysis is regenerated when pyruvte is reduced
Substrate Level Phosphorylation
Carbohydrates
Lactic Acid Fermentation
Fermentation
23. The conversion of the chemical energy in these bonds into the usable energy needed to drive the processes of living cells
Respiration
Respiration in Humans
Ventilation
Fats
24. The pyruvate formed during glycolysis is transported from the cytoplasm into the mitochondrial matrix where it is decarboxylated (loses a CO2) - and the acetyl group that remains is transferred to coenzyme A to form acetyl CoA; NAD+ is reduced to NAD
Respiration in Arthropod Phylum
External Respiration
Pyruvate Decarboxylation
Photosynthesis
25. Refers to all of the reactions involved in this process (i.e. - glycolysis and the additional steps leading to the formation of ethanol or lactic acid) and only produces only two ATP per glucose molecule
Medulla Oblongata
Pyruvate
Fermentation
Anaerobic Conditions
26. Degradation of one glucose molecules yields a net of two ATP from glycolysis and one ATP for each turn of the Krebs cycle. thus - a total of four ATP are produced by substrate level phosphorylation
Substrate Level Phosphorylation
Carbohydrates
Electron Transport Chain
Proteins
27. Converts the energy of the sun into the chemical energy of bonds in comopunds such as glucose
Photosynthesis
Electron Transport Chain
Ammonia
Glycolysis vs. cell respiration
28. Pyruvate is reduced during the process of fermentation in the absence of oxygen
Glycolysis vs. cell respiration
Alveol
Anaerobic Conditions
Fats
29. Mucus secreted by cells on the external surface of the earthworm's body provides a moist surface for gaseous exchange by diffusion
Dehydrogenation
Respiration in Annelids
Glycolysis vs. cell respiration
Glycolysis
30. Isomerized into PGAL (glyceraldehyde 3-phosphate) so that it can be used in subsequent reactions
Dihydroxyacetone Phosphate
Transamination Reaction
Exhalation
Lactic Acid Fermentation
31. In living cells - carbohydrates and fats
Oxidative Phosphorylation
Respiration in Protozoa and Hydra
Fuel
Internal Respiration
32. Air filled sacs at the terminals of the airway branches
Fermentation
Fuel
Pyruvate Decarboxylation
Alveol
33. First stage of glucose catabolism that is a series of reactions that lead to the oxidative breakdown of glucose into two molecules of pyruvate - the production of ATP - and the reduction of NAD+ into NADH and occurs in cytoplasm
Glycolysis
Ammonia
Citric Acid Cycle (Krebs Cycle)
Anaerobic Conditions
34. The ionized form of pyruvic acid
Fats
Glycolysis
Respiration
Pyruvate
35. Stored in adipose tissue in the form of triglyceride -must be activated in the cytoplasm; this process requires two ATP -transported into the mitochondrion and taken through a series of beta-oxidation cycles that convert it into two- carbon fragments
Transamination Reaction
Substrate Level Phosphorylation
Respiration in Protozoa and Hydra
Fats
36. Organ whose rhythmic discharges stimulate the intercostal muscles or the diaphragm to contract
Oxidative Deamination
Medulla Oblongata
Electron Transport Chain
Ammonia
37. Generally a passive process where the lungs and chest wall are highly elastic and tend to recoil to their original positions after inhalation
Exhalation
Dehydrogenation
Fuel
Internal Respiration
38. Oxidation reaction that - during respiration - high-energy hydrogen atoms are removed from organic molecules
Ventilation
Dehydrogenation
Substrate Level Phosphorylation
Anaerobic Conditions
39. Trachaea open to the surface in openings called spiracles which permits the intake - distribution - and removal of respiratory gases directly between the air and the body cells by diffusion
Carbohydrates
Respiration in Annelids
Substrate Level Phosphorylation
Respiration in Arthropod Phylum
40. Every cell is in contact with the external environment (water) - and respiratory gases can be exchanged between the cell and the environment by simple diffusion through the cell membrane
Proteins
Dehydrogenation
Exhalation
Respiration in Protozoa and Hydra