Chapter 7&8 Flashcards | Quizlet

Central carbon metabolism has been studied for many decades with the help of both radioactive (11 C and 14 C) and stable (13 C) carbon isotopes. Each isotope offers advantages and disadvantages. The 11 C isotope has a very short half-life of 20.334 minutes but emits high energy positrons upon decay.A radioactive isotope, also known as a radioisotope, radionuclide, or radioactive nuclide, is any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays. Every chemical element has one or more radioactive isotopes.Malvin Calvin and his associates at California university revealed in 1949, the nature of dark reactions by using the newly discovered radioactive isotope of carbon 14C.Calvin and Benson's photosynthesis work was at the vanguard of what become a flood of research using isotopes to uncover how life functions at the molecular level. While C-14 experiments revealed a mind-boggling multitude of metabolic pathways in living organisms, radioactive phosphorus-32 allowed researchers to probe the properties of DNA.You'll find the correct answer below The radioactive isotope used in the Calvin experiments was ____. The radioactive isotope used in the Calvin experiments was ____. carbon-12 nitrogen-15 boron-8 carbon-14 The Correct Answer is carbon-14 Reason Explained … Read more

radioactive isotope | Description, Uses, & Examples

The photosynthetic carbon reduction cycle, or Calvin-Benson-Bassham (CBB) cycle, is now contained in every standard biochemistry textbook. Although the cycle was already proposed in 1954, it is still the subject of intense research, and even the structure of the cycle, i.e. the exact series of reactions, is still under debate. The controversy about the cycle's structure was fuelled by theIt was proposed by Melvin Calvin. Calvin along with A.A. Benson and J. Bassham used a radioactive isotope of carbon (C 14) in Chlorella pyrenoidosa and Scenedesmus to determine the sequences of dark reaction. For this work Calvin was awarded Nobel prize in 1961. To synthesize one glucose molecule Calvin cycle requires 6CO 2The radioactive carbon isotope, 14C, well known also in other connections, has played a particularly important role in Calvin's work. Melvin Calvin shown with some of the apparatus he used to study the role of carbon in photosynthesis. Most of Calvin's experiments have been performed using a microscopic green alga, Chlorella pyrenoidosaThe radioactive isotope used in the Calvin experiments was ____. carbon-14. The Calvin cycle describes the conversion of ___. What type of organism was used in Calvin's experiments? algae. In C3 plants the conservation of water promotes _____. photorespiration. In C4 and CAM plants carbon dioxide is fixed in the _____ of mesophyll cells.

Light and dark reactions of the photosynthesis process

Radioactive isotopes were used very famously in Calvin's experiments on photosynthesis, however, and they were able to generate very reliable data. With the correct investigatory method, radioactive isotopes are highly useful.The radioactive isotope used in the Calvin experiments was ____. carbon-12 nitrogen-15 boron-8 carbon-14 The Correct Answer is carbon-14 Reason Explained … Read more Categories chapter 7&8 Tags The radioactive isotope used in the Calvin experiments was ____.Radioactive decay occurs when an unstable isotope, known as the 'parent' isotope, emits radiation through loss of an ionizing particle from its nucleus. This transforms the isotope into a new, 'daughter' isotope, often a different element. For example, nuclei of 238U are unstable and by emitting alpha particles decay into 234Th (Faure andHere is the answer for the question - The radioactive isotope used in the Calvin experiments was ____.. You'll find the correct answer below. The radioactive isotope used in the Calvin experiments was ____. The radioactive isotope used in the Calvin experiments was ____. carbon-12 nitrogen-15 boron-8 carbon-14. The Correct Answer is. carbon-14The use of radioactive isotopes in biology and medicine was actually started in 1901 by Henri Danlos using radium for the treatment of tuberculosis in the skin, but the application of radioisotope as tracers in biology and medicine was pioneered by George de Hevesy in the 1920s when radioactive isotopes were used naturally.

What is RuBisCo in biology?

Ribulose-1,5-bisphosphate carboxylase/oxygenase, frequently known through the abbreviations Rubisco, rubisco, RuBPCase, or RuBPco, is an enzyme concerned in the first main step of carbon fixation, a procedure through which the atmospheric carbon dioxide is transformed by means of crops and different photosynthetic organisms to energy-rich