Synthesis of vitamin ____ requires activation of the precursor molecule in the skin by UV rays in sunlight. This vitamin is essential to absorb dietary calcium.

_______________ is the major contributor to skin color and protects the skin and underlying organs and organ systems against the damaging effects of ultraviolet (UV) radiation.

The _____________________ marks the transition between the deeper, metabolic active layers of the epidermis and the dead cells of its most superficial layer; nuclei and organelles disintegrate and keratinocytes visibly change.

_______________________________ are the epidermal cells that participate in immune responses mounted against microbes that invade the skin, by “alerting” other immune cells. Immunologists include these cells in a broader group called antigen-presenting cells (APCs); they function as effective outposts of the immune system.

Blood-borne pathogen training is required for all staff every 2 years.

If you are becoming frustrated and overwhelmed, once you know an infant’s needs have been fully met, and they still can not be soothed, it is okay to place them in a safe sleep environment and ask to take a break from the classroom.

When there are mixed age groups in the same room, the staff:child ratios shall be consistent with the age of the majority of the children when no infants or toddlers are in the mixed age group.  When infants or toddlers are in the mixed age group, the staff:child ratios for infants and toddlers shall be maintained.

EXAM PROBLEM #6 Instructions: Choose your answers from the dropdown boxes. There is no need to write anything on your “work” pages. Question: Classify each of the following as a PHYSICAL or CHEMICAL change. A.   An iron rake rusts when left out in the rain.  [change1] B.   Puddles evaporate in the summer sun.  [change2] C.   Liquid nitrogen forms solid crystals at very low pressures.  [change3] D.   Paper burns when lit by a match.  [change4]

EXAM PROBLEM #1 Instructions: Choose the ONE best answer below. There is no need to write anything on your “work” pages. Question: Put these three elements in order of increasing atomic radius (smallest to largest) based on periodic table trends:  Tc, Ba, Cu

EXAM PROBLEM #6 Instructions: Choose your answers from the dropdown boxes. There is no need to write anything on your “work” pages. Question: Classify each of the following as a PHYSICAL or CHEMICAL change. A.   Food is converted into new skin cells after you eat.  [change1] B.   When heated, potassium chlorate decomposes into potassium chloride and oxygen.  [change2] C.   Kerosene burns in an oil lamp.  [change3] D.   Water vapor from the air condenses on a cold glass of iced tea.  [change4]