According to cell theory

new cells arise only from preexisting cells.

Compared with a eukaryotic cell, a prokaryotic cell

lacks organelles beyond ribosomes.

The atomic mass of an element

is the number of protons and neutrons it contains.

The term "biodiversity" refers to

number of species, variation, habitat in which they live.

Since pure water is neutral in pH, it contains

an equal number of hydrogen ions (H+) and hydroxide (OH-).

Isotopes of a given element have

the same number of protons but differ in atomic mass.

Which is the correct sequence from the smallest and simplest to the largest and most complex?

cells-tissues-organs-organ systems-organism

Which statement regarding the scientific method is false?

Control group is always exposed to the factor being tested.

The chemical reactivity of an element is dependent on

the number of electrons in the outermost shell.

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Exam 1 Review Intro to Biology

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Questions 25

Answers

1
Which of the following is one of the domains of life?
Protista
Eukarya
Animalia
Fungi
2
According to cell theory
all organisms are composed of tissues.
new cells arise only from preexisting cells.
animals but not plants are composed of cells.
the smallest unit of life is a nucleus.
3
An ion is an atom that
exists in a gaseous state.
shares electrons with other atoms.
does not have a net charge.
has a net charge.
4
If an element has an atomic number of 12, how many electrons are in its outermost shell?
12
2
10
8
5
Which nutrient source is the easiest one for humans to break down and form ATP?
cellulose
glucose
protein
chitin
6
The smallest unit that has all of the characteristics of life is the
organ.
organ system.
cell.
tissue.
7
Compared with a eukaryotic cell, a prokaryotic cell
lacks organelles beyond ribosomes.
is larger.
does not require energy.
is not living.
8
The water strider is an insect that skates on water not sinking. The tips of its feet must be
hydrophilic.
acidic.
basic.
hydrophobic.
9
The atomic mass of an element
equals the number of protons plus the number of electrons.
changes after each reaction.
is the number of protons and neutrons it contains.
equals the number of neutrons.
10
Which of the following is a prokaryotic cell?
bacterium
paramecium
muscle cell
plant cell
11
Which nuclear structure(s) contain(s) the hereditary material?
chromatin
chloroplasts
nuclear envelope
nucleoplasm
12
The term "biodiversity" refers to
the rate of extinction of species due to human activities.
the study of food chains within an ecosystem.
number of species, variation, habitat in which they live.
a study of ecosystems without the living organisms.
13
Since pure water is neutral in pH, it contains
no hydrogen ions (H+).
seven times more hydrogen ions (H+) than hydroxide ion(OH-).
no hydroxide ions (OH-).
an equal number of hydrogen ions (H+) and hydroxide (OH-).
14
What is the correct format for the binomial name of human beings
Homo sapiens
homo Sapiens
homo sapiens
Sapiens homo
15
If neutral atoms become positive ions, they
lose protons.
lose electrons.
gain protons.
gain electrons.
16
Isotopes of a given element have
a different number of electrons.
the same number of neutrons.
the same atomic mass but a different number of protons.
the same number of protons but differ in atomic mass.
17
If a cell lacked ribosomes, it would NOT be able to
form a Golgi vesicle.
synthesize proteins.
form a spindle apparatus.
hydrolyze fat.
18
All the organisms of various species living within a given area constitute a(n)
community.
population.
ecosystem.
domain.
19
Corn belongs to the kingdom
Plantae.
Archaea.
Animalia.
Protista.
20
If an element has an atomic number of 15, then
there are 7 electrons in the outermost shell.
the atomic mass must also be 15.
the atom has 15 electrons.
the atom must have only one orbital.
21
Which eukaryotic organelle is the largest?
Golgi apparatus
mitochondria
ribosome
nucleus
22
Which is the correct sequence from the smallest and simplest to the largest and most complex?
cells-tissues-organs-organ systems-organism
tissues-organs-organ systems-organism-cells
cells-organs-tissues-organ systems-organism
tissues-cells-organs-organ systems-organism
23
Which of the following structures are NOT found in the cytoplasm?
chloroplast
mitochondria
lysosome
chromosomes
24
Which statement regarding the scientific method is false?
Conclusions are formed after an experiment is conducted.
Deductive reasoning is used in the design of an experiment.
A hypothesis may become a theory, which may become a law.
Control group is always exposed to the factor being tested.
25
The chemical reactivity of an element is dependent on
the number of electrons in the inner shell.
the arrangement of neutrons.
the number of protons and neutrons.
the number of electrons in the outermost shell.

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