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45 terms

Biology test 1

STUDY
PLAY
Which of the following is not a property of life?
Organisms respond to environmental stimuli.
Living things exhibit complex but ordered organization.
Organisms take in energy and use it to perform all of life's activities.
Populations of organisms are unable to change over time.
Organisms reproduce their own kind.
Populations of organisms are unable to change over time.
Which of the following structures can perform all the activities required for life?

DNA molecules
cells
nuclei
organelles
cells
What is a gene?
a unit of heredity
Which of these is required for natural selection to occur?

inheritance
unequal reproductive success
overproduction
individual variation
all of the above
all of the above
Which of these statements is correct?

Scientific ideas are subjected to repeated testing.
Science does not require observations that other people can confirm.
Science can be used to prove or disprove the idea that deities or spirits cause earthquakes and other natural disasters.
ntific ideas are subjected to repeated testing.
The lower the pH of a solution, the ______.

ess toxic the solution
higher the OH— concentration
more basic the solution
greater the number of oxygen atoms
more acidic the solution
more acidic the solution
Sweating cools your body by ______.
evaporative cooling
Human body cells are approximately ______ water.
70-95%
Adjacent water molecules are connected by the ______.

electrical attraction between the hydrogen of one water molecule and the oxygen of another water molecule
electrical attraction between the hydrogens of adjacent water molecules
sharing of electrons between the hydrogen of one water molecule and the oxygen of another water molecule
sharing of electrons between hydrogens of adjacent water molecules
sharing of electrons between adjacent oxygen molecules
electrical attraction between the hydrogen of one water molecule and the oxygen of another water molecule
Adjacent water molecules are joined by ______ bonds.
polar and covalent
The hydrogens and oxygen of a water molecule are held together by ______ bonds.
covalent
What name is given to bonds that involve the sharing of electrons?
covalent
The bond between oppositely charged ions is a(n) ______ bond.
ionic
An atom's protons are found in its
nucleus
______ is an example of an element.

Methane
Glucose
Salt
Water
Carbon
Carbon
In the following reaction, galactose is a ______.
galactose + glucose → lactose + water
monomer
What name is given to the following reaction?
galactose + glucose → lactose + water
dehydration reaction
What name is given to the following reaction?
sucrose + water → glucose + fructose
hydrolysis
Carbohydrates typically include ______.
C, H, and O atoms
Complete the equation:
monosaccharide + monosaccharide → ______ + water
disaccharide
In the following equation, lactose is a ______.
galactose + glucose → lactose + water
disaccharide
Table sugar is ______.
sucrose
Which of the following is an example of a polysaccharide?
starch
Animals store carbohydrates as ______.
glycogen
Enzymes are ______.
proteins
Proteins are polymers constructed from ______ monomers.
amino acid
The linear sequence of amino acids in a polypeptide chain is referred to as its ______ structure.

pentamerous
primary
quaternary
tertiary
secondary
primary
Nucleic acids are polymers of ______ monomers

fatty acid
DNA
monosaccharide
hydrocarbon
nucleotide
nucleotide
Cellulose is an example of ______.
a polysaccharide
A glycerol with three fatty acids attached is referred to as a ______.
triglyceride
How does RNA differ from DNA?
RNA contains uracil; DNA contains thymine.
Relative to prokaryotic cells, eukaryotic cells are usually ______.

smaller and more complex
smaller and simpler
larger and more complex
larger and equally complex
smaller and equally complex
Correct
larger and more complex
Humans are composed of ______ cells.
eukaryotic
You find a cell of a type you have never seen before. The cell has both a nucleus and a cell wall. Therefore, you conclude that it must be a ______ cell.
plant
Which of the following is a function of the plasma membrane?
regulation of the passage of material into and out of the cell
______ are the major lipids of plasma membranes.
Phospholipids
The nuclear envelope is composed of ______.
a double membrane
Where does protein synthesis take place?
on ribosomes
The endomembrane system includes ______.

ribosomes, lysosomes, vacuoles, and the endoplasmic reticulum
Golgi apparatus, lysosomes, vacuoles, and ribosomes
Golgi apparatus, ribosomes, vacuoles, and the endoplasmic reticulum
Golgi apparatus, lysosomes, ribosomes, and the endoplasmic reticulum
Golgi apparatus, lysosomes, vacuoles, and the endoplasmic reticulum
Golgi apparatus, lysosomes, vacuoles, and the endoplasmic reticulum
Which of the following parts of a cell is (are) most like the shipping center of a company?

the nucleolus
mitochondria
the Golgi apparatus
the endoplasmic reticulum
chloroplasts
the Golgi apparatus
Lysosomes are responsible for ______.

photosynthesis
lipid synthesis
digestion of organic matter inside the cell
protein synthesis
cellular respiration
digestion of organic matter inside the cell
Vacuoles are ______.

found only in plant cells
manufactured by ribosomes
membranous sacs
composed of microtubules
composed of protein
membranous sacs
Plant cells, unlike animal cells, are characterized by the presence of a ______.

nucleus and cell wall
cell wall and ribosomes
cell wall and contractile vacuole
nucleus and contractile vacuole
cell wall and central vacuole
cell wall and central vacuole
Which organelle is responsible for photosynthesis?

smooth endoplasmic reticulum
ribosome
chloroplast
mitochondrion
nucleolus
chloroplast
Similar to the nucleus, chloroplasts and mitochondria are ______.

surrounded by two membranes
not surrounded by membrane
green
surrounded by two membranes