Human Biology Chapter 1-3 questions
with verified answers.
Homeostasis ANS - State of body equilibrium characterized by a relatively constant and stable internal
environment
Enzymes ANS - - Facilitate biochemical reactions
- are proteins
-function as biological catalysts
-speed up chemical reactions
-are not altered or consumed by reaction
-without enzymes, many biochemical reactions wouldn't proceed quickly enough to sustain life
Lipids ANS - -Insoluble in water
3 important classes
-Triglycerides - Energy storage molecules
-Phospholipids - cell membrane structure
-Steroids carbon based ring structure
Controlled Experiments ANS - All but one variable are accounted for
Scientific Method (steps) ANS - -Observe & Generalize
-Formulate a hypothesis
-Make a testable prediction
-experiment or observe
-modify the hypothesis as necessary and repeat
How to calculate the atomic number ANS - Atomic Number=Number of protons
, How to Calculate the atomic mass ANS - # of protons+ # of neutrons
Characteristics of water ANS - -Water is an excellent solvent
-Water is liquid @ body temp
-Water can absorb and hold heat energy
-Evaporation of water uses up heat energy
-Water participates in essential chemical reactions
Atomic number ANS - Number of protons, always the same number for ay atom of a particular element
Atomic mass ANS - Roughly equal to number of protons plus neutrons
Levels of Organization ANS - -Atom & molecule
-Cell
-Tissue
-Organ
-Organ System
-Organism
-Population
-Community
-Ecosystem
-Biosphere
Lysosomes ANS - Digests damaged organelles and cellular debris
Mitochondrion ANS - Produces energy for cell
Nucleus ANS - Information center for the cell; Contains DNA
with verified answers.
Homeostasis ANS - State of body equilibrium characterized by a relatively constant and stable internal
environment
Enzymes ANS - - Facilitate biochemical reactions
- are proteins
-function as biological catalysts
-speed up chemical reactions
-are not altered or consumed by reaction
-without enzymes, many biochemical reactions wouldn't proceed quickly enough to sustain life
Lipids ANS - -Insoluble in water
3 important classes
-Triglycerides - Energy storage molecules
-Phospholipids - cell membrane structure
-Steroids carbon based ring structure
Controlled Experiments ANS - All but one variable are accounted for
Scientific Method (steps) ANS - -Observe & Generalize
-Formulate a hypothesis
-Make a testable prediction
-experiment or observe
-modify the hypothesis as necessary and repeat
How to calculate the atomic number ANS - Atomic Number=Number of protons
, How to Calculate the atomic mass ANS - # of protons+ # of neutrons
Characteristics of water ANS - -Water is an excellent solvent
-Water is liquid @ body temp
-Water can absorb and hold heat energy
-Evaporation of water uses up heat energy
-Water participates in essential chemical reactions
Atomic number ANS - Number of protons, always the same number for ay atom of a particular element
Atomic mass ANS - Roughly equal to number of protons plus neutrons
Levels of Organization ANS - -Atom & molecule
-Cell
-Tissue
-Organ
-Organ System
-Organism
-Population
-Community
-Ecosystem
-Biosphere
Lysosomes ANS - Digests damaged organelles and cellular debris
Mitochondrion ANS - Produces energy for cell
Nucleus ANS - Information center for the cell; Contains DNA
