Which one of the following statements about aging is most accurate?
a
b
Oo oo
The brain reaches its maximum weight around the seventh decade of life.
Synaptic connections are too fixed to permit a great deal of learning after the age of 35.
Despite some neuronal loss, an unlimited number of neural pathways are available and ready to be developed; therefore,
additional learning can occur throughout life.
Learning throughout the adult and aging years is supported primarily by glial proliferation.
Increased efficiency of the sympathetic nervous system enhances the ability to learn.
d

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.

Timed ! in which of these statements are protons, electrons, and neutrons correctly compared? quarks are present in protons and neutrons but not in electrons. quarks are present in protons, neutrons, and electrons. quarks are present in neutrons and electrons but not in protons. quarks are present in protons and electrons but not in neutrons.