Which is NOT property of carbon

carbon-carbon bonds can only be single bonds

In the formation of table salt, sodium and chlorine interact because

sodium donates one electron to chlorine

The tertiary structure of proteins is typified by

3D shape of an individual polypeptide chain

In a chemical reaction the product is

generally written on the right side of the equation

The difference between a hexose and a pentose is that

a hexose has six carbons but a pentose has five

What best summarized the difference between DNA and RNA

RNA is single stranded and DNA is double stranded

Which is true about proteins

proteins lose their function if their 3D shape is changed

The cell theory states that all living things

Are composed of the basic unit of cell

When a chemical reaction is at equilibrium

the forward and reverse reactions are going at equal rates

Glucose dissolves in water because

it has polar hydroxyl groups that interact with polar water

Which of the following is not true of lipids?

they have many oxygen-containing functional groups

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BIO 114 Exam 1 Review

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Chapter 1-3 #Biology

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Questions 35

Answers

1
Which of the following is NOT a characteristic of living things
multicellularity
adaptation to their environment
metabolism
reproduction
2
Chlorine has seven electrons in its valence shell, how many more does it need to fill its shell
two
one
four
eight
3
The representation H-O-H is known as
structural formula
molecular formula
simplest formula
Lewis structure
4
The science of life is
biology
evolution
taxonomy
ecology
5
Which is NOT property of carbon
carbon has four valence electrons
two carbon atoms can share 3 electron pairs with each other
carbon-carbon bonds are strong
carbon-carbon bonds can only be single bonds
6
In the formation of table salt, sodium and chlorine interact because
sodium and chlorine share an electron pair
chlorine donates seven electrons to sodium
there is no electron exchange
sodium donates one electron to chlorine
7
The tertiary structure of proteins is typified by
folding into an alpha-helix
association of several polypeptide chains
order in which amino acids are joined
3D shape of an individual polypeptide chain
8
Covalently bonded atoms with similar electronic negativities are
polar
ionic
nonpolar
partially negative
9
In a chemical reaction the product is
generally written on the left side of the equation
always in equilibrium with the reactants
joined by an ionic bond only
generally written on the right side of the equation
10
The difference between a hexose and a pentose is that
a hexose can be polymerized and a pentose cannot
one is hydrophilic and the other is hydrophobic
a hexose has six carbons but a pentose has five
a hexose is saturated and a pentose is unsaturated
11
What best summarized the difference between DNA and RNA
RNA is single stranded and DNA is double stranded
DNA is a polymer and RNA is a monomer
RNA comprises genes and DNA synthesizes protein
RNA is a protein and DNA is a nucleic acid
12
If an organisms is eukaryotic then by definition it will
possess a nucleus
be unicellular
be assigned to the domain Bacteria
have a plasma membrane
13
The difference between amino acids is their
number of carbonyl groups
number of potassium atoms
number of asymmetric carbons
R-groups
14
The chemical behavior of an atom is determined most directly by
number of neutrons
atomic number
atomic mass
its valence electrons
15
Which is mismatched?
monosaccharide - maltose
hexose - glucose
polysaccharide cellulose
disaccharide - sucrose
16
When a nucleic acid undergoes hydrolysis, the resulting subunits are
monosaccharides
amino acids
carotenoids
nucleotides
17
A product of photosynthesis is
water
oxygen
carbon dioxide
light
18
At what temperature is water most dense?
100 degree celsius
0 degrees celcius
1 degree celcius
4 degrees celcius
19
An organic compound differs from an inorganic compound in that it
lacks valence electrons
contains carbon
lacks isotopes
contains two or more atoms
20
The molecular mass of glucose is 180 amu. 0.25 moles of this substance contains
1.3 x 10^10 molecules
45 g
180 daltons
1.8 g
21
Which is true about proteins
all proteins are enzymes
denaturation is usually reversible
protein activity is independent of pH and temperature
proteins lose their function if their 3D shape is changed
22
At which level of protein structure are peptide bonds most important
primary
quaternary
tertiary
secondary
23
Which statement concerning steroids is false?
They are carbohydrates
they consist of four attached rings
they can function as hormones
they are exemplified by cholesterol
24
The cell theory states that all living things
can move from one place to the next
Are composed of the basic unit of cell
respond to stimuli
grow and develop
25
When a chemical reaction is at equilibrium
the forward and reverse reactions are going at equal rates
the reverse reaction stops
the forward reaction stops
the forward reaction is going faster
26
Autotrophs are exemplified by
animals
archaea
plants
fungi
27
An atom becomes a cation if
is gains one or more electrons
one or more of its electrons change energy levels
it shares electrons
it loses one or more electrons
28
This molecule transmits hereditary information
ATP
cholesterol
RNA
DNA
29
A carbohydrate energy molecule found in animal liver and muscle cells is?
starch
chitin
glycogen
cellulose
30
An atom has six protons, six electrons and eight neutrons. Its atomic mass is
12
14
6
20
31
Which of the following contain the fewest number of species?
biosphere
population
domain
family
32
Isotopes differ from each other with respect to the number of
protons only
protons and neutrons
neutrons only
electrons only
33
Glucose dissolves in water because
it is hydrophobic
it has polar hydroxyl groups that interact with polar water
it is a polysaccharide
it ionizes
34
The process where water molecules surround ions that are being dissolved is called
oxidation
hydration
reduction
buffering
35
Which of the following is not true of lipids?
they function as hormones
they store energy
they have many oxygen-containing functional groups
they function as structural components of cellular membranes

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