life skills
how many hours of sleep do most people need to function properly?
6-8 hours
what type of one- celled micro-organisms are sometimes called germs or microbes?
bacteria
efforts to prevent the spread of communicable diseases is described as:
infection control
light, heat, and magnetic changes are all produced by:
electricity
the term used to identify that occupies space and has a weight is called:
matter
Physical environmental factors that can directly affect your body include UV exposure, humidity levels and:
altitude
bacteria that are harmless and can even be beneficial are called:
nonpathogenic
infection control is divided into the following methods:
cleaning, disinfection, and sterilization
any electrical appliance activated by the flow of electric current such as a facial steamer is known as a(n):
load
all matter that is now living or was alive at one time, with carbon present, falls within the scientific division of:
organic chemistry
which of the following terms is NOT one of the three energy nutrients contained in almost all foods?
keratin
what approximate percent of all bacteria are harmless?
70%
what process may be used to loosen pathogens for removal when cleaning a surface?
sprayed with antiseptic
since silver and copper transmit electricity, they are:
conductors
water freezing and becoming ice is an example of what type of change?
physical
what is the topical form of vitamin A that promotes cell turnover and increase skin elasticity?
retinol
a type of nonpathogenic bacteria that live on dead or decaying organic matter?
saprophytes
a product that can be applied to the skin to reduce pathogens is called a(an):
antiseptic
materials that do not allow a current to pass through them are called:
insulators
basic substances that cannot be broken down into simpler substances are called:
elements
health hazards, such as impure air and improper storage or use of food, fall under the category of:
public hygiene
bacterial cells that cause infection and diseases are:
pathogenic
what percentage of alcohol can be used as an antiseptic for the skin ?
at least 70%
cords on appliances should be kept straight and free of knots, kinks, and tangles to prevent:
frequency
two or more atoms joined together by a chemical bond is a(n):
molecule