Which of the following is NOT true about ecosystems

they are not efficient recyclers

The gene theory states that

organisms contain coded information that dictates behavior

What determines how an element reacts

the number of electrons in its outer shell

The two parts that make up a species name

must be capitalized or italicized

Which is not a tenant of cell theory

cells have to remain small to be efficient

Which is NOT true about ionic bonds

they have the same charge as the periodic table elements

needs to be testable and falsifiable

the number of protons

two of these answers are correct

gases that do not react with anything else

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Gen Bio 1 Exam 1 Practice Qs

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Questions 35

Answers

1
Which is not one of the most common elements in living organisms
hydrogen
nitrogen
iron
carbon
2
What category describes unicellular prokaryotic organsims
fungi
protists
plants
bacteria
3
Why is cholesterol important in plasma membranes
it ties up the proteins
it blocks receptors
it isn't
it maintains the rigidity
4
Which of the following is NOT true about ecosystems
they are not efficient recyclers
they require constant input of energy from the sun
they include biotic and abiotic factors
together, they all make up the biosphere
5
What is the second step in the scientific method
hypothesis
conclusion
experiment
observation
6
If something is a few amino acids long it is usually referred to as
the tertiary structure
a polypeptide
a short chain of amino acids
a protein
7
The bonds between water molecules are
polar covalent bonds
hydrogen bonds
ionic bonds
nonpolar covalent bonds
8
What is not a function of a protein
enzymes
transport
energy storage
structure
9
What is the monomer of nucleic acids
sugars
nucleotides
bases
acids
10
What causes polarity
sharing of electrons unequally
sharing of electrons equally
transfer of electrons
unequal sharing of protons
11
Which does NOT describe a saturated fat
it is solid at room temperature
it is associated with animals
it is saturated with oxygen
it has no double bonds
12
Human interactions within ecosystems
add energy
add biodiversity
increase the number of each species
disrupt them
13
The gene theory states that
life comes from life
organisms contain coded information that dictates behavior
all living organisms are composed of cells
all living things have a common ancestor
14
What determines how an element reacts
the number of electrons in its outer shell
all of the above
the number of neutrons in the nucleus
the number of protons in the nucleus
15
What variable is deliberately manipulated in an experiment
standardized variable
controlled variable
dependent variable
independent variable
16
The two parts that make up a species name
reflect the common name
are the specific epithet and the genus
must be capitalized or italicized
are the species and the genus
17
If we want to see the effect of fertilizer on plants, what is a good responding variable
two types of fertilizer
water
growth
soil
18
What is not a characteristic of life
decay
evolving
metabolism
organization
19
Which is not true of the pH scale
it is logarithmic
it ranges from 1 to 16
a pH below 7 is acidic and above 7 is basic
it represents the relative concentrations of H+ and OH-
20
Which complex carbohydrates are structural in function
chitin and glycogen
chitin and cellulose
cellulose and starch
glycogen and starch
21
Which is not a tenant of cell theory
the cell is the structural and functional unit of life
all living things are made up of cells
cells come from pre-existing cells
cells have to remain small to be efficient
22
Which is not a property of water
has a high heat capacity
is a universal solvent
is more dense frozen
tends to stick together
23
Isotopes vary in the number of
neutrons
protons
protons and neutrons
electrons
24
Which is NOT true about ionic bonds
they have the same charge as the periodic table elements
ions are formed
table salt is an example
electrons are completely transferred
25
What causes the tertiary structural level of proteins
R group interactions
polypeptide interactions
hydrogen interactions
oxygen interactions
26
Science is
judgmental
biased
objective
subjective
27
What causes the secondary structural level of proteins
polypeptide interactions
H interactions
no interactions
R group interactions
28
The bonds within water molecules are
ionic bonds
polar covalent bonds
nonpolar covalent bonds
hydrogen bonds
29
A good hypothesis
needs to be testable and falsifiable
can answer any question
only needs to be tested once
becomes a theory immediately
30
What is a main difference between DNA and RNA
DNA is single stranded RNA is double stranded
DNA has thymine RNA has uracil
DNA has uracil RNA has thymine
DNA has two sugars RNA has one
31
What does a buffer do
always decrease hydrogen ion concentrations
minimize changes in pH
nothing
always decreases hydroxide ion concentrations
32
the number of protons
is represented by the atomic mass
is the same for all atoms of an element
two of these answers are correct
is represented by the atomic number
33
Maintenance of normal conditions within an organism is referred to as
photosynthesis
metabolism
adaptation
homeostasis
34
What are noble gases
gases that do not react with anything else
gases that are surrounded by a capsule that resembles a cape
gases that have a special electron that looks like a crown
gases that think they are better than the rest
35
What type of lipid makes up plasma membranes
triglycerides
waxes
saturated fats
phospholipids

Gen Bio 1 Exam 1 Practice Qs Flashcards | StudBud