Which is an inferance?

After watching a plant for a week, you determine it needs more sunlight

Which best descibes the purpose of science?

to explain the nature of things

Which of the following is an observation?

You record the air twmperature every day for a week

In the peer-review process for a report of the results the ecology of honeybees, who would be an appropiate reviewer?

a biologist that studies insects

Photosynthesis used sunlight to convert water and carbon dioside into

oxygen and high-energy sugars and starches

Which is considered a non-scientic question?

Who was the greatest scientist?

A chemical reaction is a process be which atoms or groups of atoms in substances are

reorganized into different substances

When added to water, how does an acid affect the pH and H+ concentration?

The pH decreases while the H+ increases

Which activity is an example of the human body striving tp maintain homeostasis?

producing sweat to reduce body temperature

How does an enzyme influnce a biologist reaction?

It decreases the activion energy necessary to initiate the chemical change.

Which of the following would be an activity conducted by a biologist?

Describe the behavior of brown bears

What is the basis of the metric measurement system?

Its measures are based on divisions that are powers of ten

Diffusion is the movement of molecules from

an area of high concentraition to an area low concentration

Which topic falls under the study of biology?

the digestive system of an earthworm

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Mrs. Keith's Midterm Study Guide

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Questions 98

Answers

1
Which is an inferance?
You measure a plant's height every day for a week
Everyday for a week, you collect data on a plant's movement
After watching a plant for a week, you determine it needs more sunlight
You give a plant the same amount of water everyday
2
Which best descibes the purpose of science?
to explain the nature of things
to solve the ethical problems of society
to solve the ethical problems of society
to prosose solutions to political issues
3
Which of the following is NOT a principle of the cell therory?
All living things are made of cells
Very few cells reproduce
All cells are produced by existing cells
Cells are the basic unit of life
4
The total number of atoms in a molecule of sucrose, C₁₂H₂₂O₁₁is _____.
45
22
11
12
5
What are the products of the Calvin Cycle?
ATP
carbon dioxide
high-energy sugars
oxygen gas
6
Which of the following is an observation?
You record the air twmperature every day for a week
You conclude that the season is changing
You propose that a cold front is approaching
You hypothesize that the temperature will increase tomorrow
7
In the peer-review process for a report of the results the ecology of honeybees, who would be an appropiate reviewer?
a politician that knew about bees
a university president
a biologist that studies insects
a physicist that keeps bees
8
a hydrogen bond can form between a hydrogen atom of one molecule and which atom of another molecule?
sodium
carbon
hydrogen
oxygen
9
Which defines an atom?
charged particle
building block of matter
smallest particle
building block of energy
10
Which is the negatively charged particle located outside the nucleus of an atom?
electron
silicon
proton
neutron
11
Most plants appear green because chlorophyll
reflect violet light
none of the above
doesn't absorb green light
absorb green light
12
Photosynthesis used sunlight to convert water and carbon dioside into
oxygen
high-energy sugars and starches
ATP and oxygen
oxygen and high-energy sugars and starches
13
A single carbon atom can form a maximum of how many single covalent bonds?
8
2
4
6
14
The scientist who first described living cells as seen through a simple microscope was _____.
Hooke
van Leeuwenhoek
Schwann
Schleiden
15
Which is considered a non-scientic question?
How do chimpanzees communicate?
Why are ocean temperatures increasing?
Are humans able to read minds?
Who was the greatest scientist?
16
A chemical reaction is a process be which atoms or groups of atoms in substances are
dissolved in other substances
reorganized into different substances
ionized by the loss of protons
mixed together with atoms in other substances
17
Amino Acids are the building blocks of which macromolecules?
Protein
Carbohydrates
DNA
Lipid
18
How does the Clavin cycle differ from the light-dependent reactions?
It requires light.
It takes place in the thylakiod.
It takes place in the stroma.
It takes place in the chloroplast.
19
A cell's contents would be the same as its surroundings, were in not for ______.
phagocytosis
selective permability
plasmolysis
dynamic equilibrium
20
When added to water, how does an acid affect the pH and H+ concentration?
The pH decreases while the H+ increases
The pH increases while the H+ decreases
Both pH and H+ increases
Both pH and H+ decreases
21
Which activity is an example of the human body striving tp maintain homeostasis?
sprinting across the street to aviod oncoming traffic
creating thoughts to solve a difficult problem
digesting foods to redice their particle size
producing sweat to reduce body temperature
22
If carbon dioxide is gone, what would expect to happen to the plant's production of high-energy sugars?
Carbon dioxide doesn't effect it
No sugars will be produces
More sugars will be produced
The same amount of sugars will be produced
23
A recipe has sugar, salt, and vanilla flavoring in butter. What ingredient is the solvent?
sugar
butter
Vanilla Flavoring
salt
24
How does an enzyme influnce a biologist reaction?
It increases the kinetic energy of reactants, and increasing colliding.
It decreases the activion energy necessary to initiate the chemical change.
It decreases the kinetic energy of reactants, and chemical change is more.
It increases the net energy difference between reactants and products
25
The apprivation of MSDS stands for
Material Saftey Data Sheet
Material Service Data Sheet
Material Specific Data Sheet
Material Sample Data Sheet
26
Which of the following would be an activity conducted by a biologist?
Describe the behavior of brown bears
Teach people how to plant corn
Design a new, solar-powered car
Idenify the cause of an earthquake
27
An organism's genetic info is stored in which type of macromolecule?
Proteins
Carbohydrates
Lipids
DNA
28
Which molecule results from the final step of the Calvin cycle?
GP3
COA
RuBP
RuTP
29
A student is collecting the gas given off from a plant in bright sunlight at a temp of 27⁰C. The gas was probably
carbon dioxide
oxygen
ATP
vaporized water
30
Which of the following is an autotroph?
sunflower
mushroom
leopard
bear
31
Which organelle would you expect to find in a plant cells but not in animal cells?
mitochondrion
chloroplast
smooth er
ribosome
32
Which is the best example of a solution?
paint
milk
blood
saltwater
33
What is the basis of the metric measurement system?
It is based on the wavelength of krypton-86 radiations
It is the only scientific mearsurement system
Its measures are based on divisions that are powers of ten
It is based on European measurement standards
34
Which of the following is a function of the nucleus?
All of the above
Controls most of the cell's processes
contains the information need to make proteins
Stores DNA
35
Diffusion is the movement of molecules from
an area of high concentraition to an area low concentration
an area of low concerntration to an area of high concentration
all of the above
an are of equilibrium to an are of high concentration
36
Which substance on the plasma membrane helps identify cemical signals from outside the cell?
membrane protein
cholesterol
transpot protein
carbohydrate chain
37
Who was one of the first people toidenify and see cork cells?
Robert Hooke
Anton van Leeuwenhoek
Rudolf Virchow
Matthias Schleiden
38
Where in chloroplast is chlorophyll found?
in the ATP
In the stroma
in the glucose
In the thylakiods
39
A catalyst is also called _____.
Enzyme
antibody
Ion
Inorganic Compound
40
WHich does a polymer most closely resemble?
Link in a Chain
Chain
Circle
intersection
41
The cell membrane contains channels and pumps that help transport materials. What are these channesl and pumps?
carbohydrates
bilipids
proteins
lipids
42
A biochemist is doing an experiment to determine the effects of chemical X on bacteria growing. What is the control?
Test Tube 1
Test Tube 4
Test Tube 3
Test Tube 2
43
Which topic falls under the study of biology?
the chemicals in fuel
the digestive system of an earthworm
the makeup of the atmosphere
rocks foung in a riverbed
44
If a cell contains a nucleus, it must be a(n) ____.
eukaryotic cells
prokaryotic cell
animal cells
plant cells
45
Which of the following results form the quantitative analysis?
there are 8 offsprings
these are the first offspring these rabbits have had
there isn't enough food
the babies are cold
46
The stroma is the region outside the
all of the above
chloroplasts
plant cells
thylakiods
47
Which of the following is not a form of passive transport?
facilitated diffusion
endocytosis
osmosis
moving down the concentration gradient
48
Which of the following is false?
A stroma contains a thylakiod.
A chloroplast contains stroma
A granum contains several thylakiods
A thylakiod contains chlorophyll
49
Algal celles are placed in a hypertonic solution. What will happen to the cells?
They will burst
They will swell
They will shrink
They will stay the same
50
Which of the following is not an example of a heterotroph?
grass
human
mushroom
deer
51
Who concluded that all plants are made of living cells?
Hooke
Schleiden
Virchow
Schwann
52
The Calvin cycle is another name for
All of the Above
light-independent reactions
photosynthesis
light-dependent reactions
53
Which is an example of a chemical reaction?
sugar dissolving in water
water evaporating
ice melting
iron rusting
54
The main function of the cell wall is to
direct the activities of the cell
a=support and protect the cell
store DNA
help the cell move
55
What do scientist call an explanation of natural of phenomenon supported by many observations and experiments over time?
scientific law
hypothesis
scientific theory
existing knowledge
56
Which manufactures ribosomes?
E.R.
nucleus
Nucleolus
proteins
57
A molecule of water (H₂O) has which bonds?
2 ionic bonds
1 ionic Bond
2 Covalent bonds
1 covalent bonds
58
Cholesterol if repelled be water and can be found between the phospholipids, What can be concluded from this?
Cholesterol is polar
cholesterol is repelled by the polar tails
A high cholesterol diet should be avioded
cholesterol is nonpolar
59
Which is an example of a stimulus and the accompanying reponse of an organism?
a wildebeast crosses a river during migration
An earthwaorm burrows into a new, rich soil
A rat scurries past, and a python strikes at it
A hawk grabs a branch to gain a perch
60
A group of orgamisms that can interbred and produce fertile offs[ring is a(n) _____.
family
species
organization
community
61
Which can't take place during a chemical reaction?
Formation of new molecules
Formation of new atoms
Bonds breaking between atoms
Bonds forming between atoms
62
What are the products of the light-dependent reactions?
oxygen gas
NADPH
ATP
All of the above
63
Which element is found in proteins but not in carbohydrates or lipids?
Hydrogen (H)
Carbon (C)
Oxygen (O)
Nitrogen (N)
64
Tasha is testing the effect of blue-colored light on the growth of totmato plants. Which is the independent varible.
amount of light
light color
temperature of light
light intensity
65
Plants gather sun's enegy with light absorbing molecules called
pigments
glucose
thylakoids
chloroplast
66
Which defines a cell?
the basic unit of living things
the smallest type of animal
microscopic organism in waterr
protein molecules in animals
67
What are the three parts of an ATP molecules?
stroma, grana, chlorophyll
NADH, NADPH, and FADH2
adenine, ribose, phosphate groups
adenine thylakiods, stroma
68
When light strikes chlorophyll, they lose electrons, which are ultimately replaced by which of the follwing?
oxidizing glucose
fixing carbon
splitting water into 2H+ and 02
breaking down ATP
69
What is produced by reactions that taake place in the thylakioods and are consumed by reactions in the stroma?
carbon dioxide and ATP
ATP and NADPH
carbon dioxide and water
ATP and Oxygen
70
Water moves out of the cell if the cell is placed in a(n) _____ solution.
Isotonic
Hypotonic
hypertonic
passive
71
Organisms that can't make their own food and must obtain energy form the foods they eat are called
autotrophs
plants
thylakiods
heterotrophs
72
The diffusion of water across a selectively permeable membrane is called
osmosis
facilitated diffusion
active transport
osmotic preesure
73
Glycogen, a sugar, is an example of which types of molecules?
Saturated fatty acid
steriod
Carbohydrates
Protein
74
Which of the following metabolic pathways is anabolic?
Photosythesis
Respiration
Breakdown of actin in muscles
Fermentation
75
Which of the following organisms are prokaryotes?
plants
animals
all of the above
bacteria
76
Plants take in the sun's energy with light-absorbs molecules
chlorophyll a
chlorophyll b
high-energy sugars
sunlight
77
A plasma membrane is made up of a(n) ____.
protein layer
lipid layer
enzyme layer
cholesterol layer
78
Which of the following is a function of the cell membrane?
stores water, salt, proteins, and carbohydrates
breaks down lipids, carbohydrates, and proteins from foods
keeps the cell wall in place
regulates which materials enter and leave the cell
79
The Calvin cycle takes place in the
photosystems
thykaloid membrane
chlorophyll molecules
stroma
80
You will not find a cell wall in which of these kinds of organism?
all of the above
animals
fungi
plants
81
Biologist would repeat the smae investigation several times to ____.
prove their hypothesis
obtain consistant data
form a new therory
get the correct results
82
A single covalent bonds forms when atoms do which of these?
When they share two electrons
When they share one electrons
When one gives two electons to the other
when one gives an electrons to the other
83
You suspect that a chemical is strongly acidic. What might be its pH?
2
11
14
7
84
Which organelle is large in plant cells but small or absent in animal cells?
vacuole
chloroplast
nucleolus
centriole
85
Which is part of the International System of Units (SI)?
inch
pound
meter
gallon
86
Oranisms, such as plants, that make their own food are called
autotrophs
heterotrophs
thylakiods
pigment
87
Water moves into a cell places in a(n) ___ solution
isotonic
osmotic
hypertonic
hypotonic
88
Which is a biological activity a person can do at the beach?
experiment with sand erosion pattern
measure the tidal differances during the day
Observe the feeding behaviors of gulls
Identify various minerals in the sand
89
What makes an water molecule polar?
A water molecule has a slight charge on each end
The pH of pure water varies with the temperature
A water molecule is made up of three atoms
Water has the ability to be frozen
90
The structure most responsible for maintaining cells homeostasis is the _____.
plasma membrane
cytoplasm
cell wall
mitochondrion
91
Which end of a phospholipid molecule is hydrophilic?
head
tail
92
Which is NOT true of lipid?
They are commonly called fats and oils
They are hydrophobic
They are good for energy storage
They are polar
93
What time period will provide the most flowering plants?
6-7 Days
8-9 Days
5-6 Days
7-8 Days
94
A charged atom that has lost or gained electrons is called a(n) _____.
ion
catalyst
isotype
acid
95
A compound has a ratio of 2 hdrogen:1 carbon should be classified by which marcomolecule?
Protein
Nucleic Acid
lipid
carbohydrate
96
A cell moves particles fom a lesser region of lesser concentration to a region of greater concentration by ______.
facilitated diffusion
passive transport
osmosis
active transport
97
One isotype of carbon differs from another in which way?
number of neutrons
atomic number
number of electrons
number of protons
98
A person studying a topic is presented with new info that conflicts with previous finding. What would a scientist do?
keep the new info to himself
argue against the new info
ignore the new info
evalute the new info

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