Show:
The Science of Life
Chemistry of Life
Biochemistry
Cell Structure and Function
Homeostasis and Cell Transport
100
Homeostasis means a) a change over long periods of time b) keeping things the same c) rapid change d) the same thing as evolution
b) keeping things the same
100
A substance that is composed of only one type of atom is called a(n) a) nucleus b) element c) cell d) molecule
b) element
100
All organic compounds contain the element a) Carbon b) Phosphorous c) Nitrogen d) Sulfur
a) Carbon
100
The size to which a cell can grow is limited by its a) location b) function c) structure d) surface area
d) surface area
100
Diffusion takes place a) only through a lipid bilayer membrane b) from an area of low concentration to an area of high concentration c) only in liquids d) from an area of high concentration to an area of low concentration
d) from an area of high concentration to an area of low concentration
200
A light microscope that has an objective lens of 10x and an ocular lens of 20x has a magnification of a) 30x b) 300x c) 200x d) 2000x
c) 200x
200
An atom that has gained or lost electrons is called a(n) a) molecule b) ion c) nucleon d) element
b) ion
200
Which of the following is a carbohydrate? a) DNA b) wax c) insulin d) sucrose
d) sucrose
200
Which of the following is an example of a prokaryotic cell? a) an amoeba b) a bacterium c) a virus d) a liver cell
b) a bacterium
200
Sugar molecules can enter cells through the process of a) exocytosis b) osmosis c) facilitated diffusion d) ion pumps
c) facilitated diffusion
300
The smallest units that can carry on all the functions of life are called a) molecules b) organelles c) cells d) species
c) cells
300
Acidic solutions have a pH that is a) less than 7 b) a negative number c) between 0 and 14 d) more than 7
a) less than 7
300
All of the following are examples of lipids except a) saturated fats b) cholesterol c) starch d) earwax
c) starch
300
All of the following are found in both plant and animal cells, except a) a cell wall b) mitochondria c) the Golgi apparatus d) the endoplasmic reticulum
b) a cell wall
300
The process by which water passes into or out of a cell is called a) solubility b) selective transport c) osmosis d) endocytosis
c) osmosis
400
Which of the following is not necessarily a characteristic of living things? a) homeostasis b) complexity c) metabolism d) reproduction
b) complexity
400
When a molecule gains an electron, it has been a) oxidized b) digested c) reduced d) inactivated
c) reduced
400
All of the following are functional groups except a) a hydroxyl group b) a carboxyl group c) an amino group d) a carbonate group
d) a carbonate group
400
A particularly active cell might contain large numbers of a) microtubules b) mitochondria c) vacuoles d) ribosomes
b) mitochondria
400
If animal cells in a solution swell, that solution is ___________ a) hypotonic b) hypertonic c) isotonic d) peritonic
a) hypotonic
500
A unifying explanation for a broad range of observations is a a) hypothesis b) prediction c) theory d) controlled experiment
c) theory
500
Which of the following is not a characteristic property of water? a) adhesion b) cohesion c) capillarity d) low specific heat
d) low specific heat
500
Energy is released when the bond between a) carbon atoms in ATP is broken b) ribose and adenine in ATP is broken c) phosphate groups in ATP is broken d) two ATP molecules is broken
c) phosphate groups in ATP is broken
500
Which of the following is the correct order of organization of structures in living things, from simplest to most complex? a) organ systems, organs, tissues, cells b) tissues, cells, organs, organ systems c) cells, tissues, organ systems, organs d) cells, tissues, organs, organ systems
d) cells, tissues, organs, organ systems
500
The sodium-potassium pump usually pumps a) potassium out of the cell b) sodium into the cell c) potassium into the cell d) only a potassium and sugar molecule together
c) potassium into the cell