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Biology 150 Lecture Final Flashcards | StudBud
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Biology 150 Lecture Final
Biology 150 Lecture Final
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#collegebio #biology
Flashcards
31 cards
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Questions
31
Answers
1
which of the following does NOT illustrate unity in biology
all animals are composed of cells
all of these ideas illustrate unity in biology
all plants are composed of cells
all organism contain DNA
2
what is the atomic number of an atom based on
number of valance electrons
number of neutrons
number of protons and neutrons
number of protons
3
what is the difference between a covalent bond and a ionic bond
covalent bond share and ionic OILRIG electrons
electronegativity
ionic bonds have more electrons
electromagnetically
4
which scientist contributed the the cell theory
virchow
Darwin
crick
franklin
5
What is NOT a theme to the cell theory
all cells are the same size
all organisms are composed of cells
cells are the basic unit
cells come from preexisting cells
6
a buffer
is a pH solution
is a substance that increases pH
is a substance that decreases pH
both choice 2 and 3
7
boron has an atomic # of 5 and mass of 11. How many electrons does boron have
5
15
16
11
8
what role does the control play within an experiment
provide comparison
ensure repeatablility
prove the hypothesis
counteract negative effects
9
a theory is
idea thats been proven
a belief
an explanation for an idea with lots of evidence
early concept
10
a hypothesis is
tentative answer to a question
a body of evidence
a phenomenon
a theory
11
what particle are found in the nucleus of a atom
both protons and neutrons
both electron and protons
proton
neutron
12
In water oxygen and hydrogen are held by __bonds, while water molecules are held by __ bonds
ionic, covalent
polar covalent, hydrogen
ionic, hydrogen
hydrogen, polar covalent
13
which statement about water is true
oxygen attracts less electrons than hydrogen
oxygen is more elecronegative than hydrogen
oxygen is more attracted to other molecule
oxygen has more of a positive charge than hydrogen
14
When studying biological structure its important to remember
function determines size
form determine function
structure might not have a purpose
size determine function
15
what is a valance electron
found in the inner orbit
electron that is transfered in bonding
found in the outer orbit
all the electrons in a atom
16
Which of the following is NOT a characteristic of life?
all organisms are complex and ordered
all organism must create energy
all living things respond to their environment
all living things are composed of cell
17
a pH of 7 is considered to be
strongly acidic
strongly basic
weakly acidic
neutral
18
when two atoms share and electron is known as
ion bonds
covalent bond
ionic bond
element
19
All of the robins living in brentwood would be an example of?
a species
a biosphere
a population
a community
20
___ are weak bonds that cant hold atoms but are strong enough for larger molecules
covalent
hydrogen
polar covalent
ionic
21
water can stick to other water molecules because
of the hydrogen bonds between them
water is neutral
oxygen molecules are attracted to one another
water has a high electronegativity
22
similar cells acting as a unit
organism
organ
tissue
cells
23
bond that does not evenly share electron
ionic
polar covalent
covalent
nonpolar covalent
24
a cattle and buffalo are not the same species because?
they do no appear alike
they eat different food
they cannot produce fertile offspring
they do not live in the same area
25
to be scientifically valid, a hypothesis must be
testable
reasonable
a question
controlled
26
sodium has 11 electrons , 11 protons, and 12 neutrons. what is the mass?
11
12
34
23
27
what is the difference between and atom and its isotopes
has more electrons
different number of protons
different number of neutrons
nothing
28
Which of the following is NOT a common element found in living organism
H
O, N
C
all of these are common elements
29
the tendency for water molecules to stick to one another is referred to as
polarity
unique properties of water
cohesion
adhesion
30
which of the following statements is NOT consistent with Darwin's theory of natural selection
organisms produce more offspring than can survive
organisms exhibits genetic changes during their life span
individuals in a population exhibits variation
natural selection can lead to the appearance of new species
31
Which stament about matter is FALSE
life is composed of matter
matter occupies space
matter can be created or destroyed
matter has mass
