show all steps please Describe what changes occur during positron emission.
Describe what changes occur during positron emission. The mass number is unchanged and the atomic number increases. O The mass number is unchanged and the atomic number decreases. The mass number and atomic number decreases. The mass number and atomic number do not change. The mass number and atomic number increases.
Medical Physics often use the isotope 18F, which decays by positron emission. (i) What mechanism competes with positron emission during nuclear decay(it is more important in heavier isotopes than in light isotopes like 18F)? (j) During positron emission, another particle also is ejected from then nucleus. What is this particle?
Which of the following changes occur in the nucleus when a positron particle is given off during a nuclear decay process? a. the production of a proton b. the loss of a neutron c. the splitting of a neutron into a proton and an electron is emitted d. the production of a neutron
steps that occur at a chemical synapse. Describe in detail all of the steps of an action potential (you can describe this in words only, a drawing with descriptive words or both). Also, describe the difference between absolute and relative refractory periods and discuss when during the action potential each takes place.
1.Describe what happens to a carbon-11 atom when it undergoes positron emission. The decay of a carbon-11 atom _____(options;changes a nuetron into proton, changes proton into neutron, is hit with a neutron, reconfigures its protons and neutrons) and this causes it to emit______(options; a negatively charged electron sized particle, a positively charged electron sized partticle, two atoms and several neutrons, two neutrons and two protons) 2.An atom undergoes radioactive decay according to this equation: ___. What is the identity of...
Groups What changes occur to the atomic number and mass of a nucleus during each of the following decay scenarios? Sports Calendar Inbox (d) a positron is emitted and atomic number Select) while mass number Help Select) NT
List and describe the normal ECG changes that occur during the submaximal and maximal stages of a graded exercise test (GXT) (i.e. changes in wave amplitudes, interval durations, etc). Describe why the physiological reason(s) that these changes occur (for example: R-R interval decreases dramatically during exercise. This occurs because heart rate increases during exercise in order to increase cardiac output/blood flow to the working muscles).
• Describe five physiological changes that normally occur during pregnancy that would be considered abnormal if they did not occur during pregnancy. • Define critical periods of growth and development and identify potential consequences of inadequate energy and nutrient availability during these periods on future health status.
2. Describe and explain the major physiological changes / adaptations that occur during a 20 week cv training program.
Please identify and briefly describe the significant physical and physiological changes that occur in the prenatal developmental period, including those that relate to birth and the very early weeks of post-natal life.