BSC 1010 STUDY GUIDE EXAM QUESTIONS AND
ANSWERS WITH COMPLETE VERIFIED SOLUTIONS
five characteristics of life
cellular organization, metabolism, homeostasis, growth snd development, reproduction.
Homeostasis definition
living organisms regulate their internal temperature.
Three domains of taxonomic organization
Bacteria, archaea, eukarya
How many electrons are in the first three energy levels of an atom?
28
What is meant by atomic number?
number of protons
What is meant by a stable atom? How may a non-stable atom become stable?
Full outer electron shell, becomes stable by gaining, losing, or sharing electrons.
Ionic bonds
transfer electrons
nonpolar covalent bonds
, share equally
hydrogen bonds
weak attractions with hydrogen
high surface tension
allows insects to walk on water
cohesion/adhesion
molecules stick together/molecules stick to other substances
resistance to temperature change
water's high specific heat stabilizes temperatures, aiding organismal temperature regulation
freezing (ice floats)
ice floats on water, insulating quatic life amd protecting ecosystems in cold conditions.
high heat of vaporization
aids cooling universal solvent (dissolves many substances)
versatile solvent
water dissolves many substances, enabling nutrient transport and essential biochemical reactions.
what is sugar composed of?
carbon, hydrogen, oxygen
What is a triglyceride?
glycerol + 3 fatty acids
ANSWERS WITH COMPLETE VERIFIED SOLUTIONS
five characteristics of life
cellular organization, metabolism, homeostasis, growth snd development, reproduction.
Homeostasis definition
living organisms regulate their internal temperature.
Three domains of taxonomic organization
Bacteria, archaea, eukarya
How many electrons are in the first three energy levels of an atom?
28
What is meant by atomic number?
number of protons
What is meant by a stable atom? How may a non-stable atom become stable?
Full outer electron shell, becomes stable by gaining, losing, or sharing electrons.
Ionic bonds
transfer electrons
nonpolar covalent bonds
, share equally
hydrogen bonds
weak attractions with hydrogen
high surface tension
allows insects to walk on water
cohesion/adhesion
molecules stick together/molecules stick to other substances
resistance to temperature change
water's high specific heat stabilizes temperatures, aiding organismal temperature regulation
freezing (ice floats)
ice floats on water, insulating quatic life amd protecting ecosystems in cold conditions.
high heat of vaporization
aids cooling universal solvent (dissolves many substances)
versatile solvent
water dissolves many substances, enabling nutrient transport and essential biochemical reactions.
what is sugar composed of?
carbon, hydrogen, oxygen
What is a triglyceride?
glycerol + 3 fatty acids
