Which sequence contains the correct order of steps when using a compound light microscope?

Low power obj-->Coarse adjust-->High power obj-->Fine adj

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

The pH decreases while the H+ increases

As a result of diffusion, the concentration of many types of substancess

eventually becomes balanced on both sides of a membrane

Which of the following statements is incorrect?

animals have a central vacuole, plants don't

Which of the following examples illustrates osmosis?

water leaves the kidney when hypertonic fluid surrounds it

Which of the following correctly sequences the scientific method?

observe, question, testable explanation, experiment, data

Which cell organelle is correctly paired with its function?

Chloroplast – serves as a site for photosynthesis

The following can affect diffusion rates (choose all that apply)

concentration gradient, temperature, particle size, pressure

A substance that moves by passive transport tends to move:

away from the area where it is more concentrated

Food is refrigerated at temps of 2°-7° C. Which explains why these temps slow food spoilage?

enzymes in bacteria that cause spoilage are inactive at 2-7°

A 10% salt solution is placed on a leaf on a slide and observed. Which is expected?

cells shrink due to movement of water out of the cells

In active transport, particles are moved:

against their concentration gradient

Which statement about the cell is most likely correct?

B contains nucleotides for transmitting genetic information

Which BEST describes the purpose of science?

to explain the nature of things

Unlike prokaryotic cells, eukaryotic cells have the capacity to

assemble into multicellular organisms

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Unit 1: Intro to Biology and Cells

83 termsStudBud Administration126 plays

#This is a review of intro to biology, biochemistry & macromolecules, cell structure & function, and cell transport.

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Questions 83

Answers

1
The assembly of proteins in a cell takes place in the
nucleus
vacuoles
cytoplasm
mitochondria
2
Cells of a plant watered with a hypertonic solution will most likely experience
bursting
cytololysis
plasmolysis
increased turgor pressure
3
Which sequence contains the correct order of steps when using a compound light microscope?
High power obj-->Coarse adjust-->Low power obj-->Fine adj
High power obj-->Fine adjust-->Low power obj-->Coarse adj
Low power obj-->Fine adjust -->High power obj-->Coarse adj
Low power obj-->Coarse adjust-->High power obj-->Fine adj
4
When added to water, how does an acid affect the pH and H+ concentration?
Both pH and H+ decrease
The pH increases while the H+ decreases
The pH decreases while the H+ increases
Both pH and H+ increase
5
Cells are small to maximize diffusion. As cell size increases, surface area to volume
decreases
increases
does not matter
allows more substances into the cell
6
Deduce from the graph the dependent variable.
plant height
amount of light
amount of water
amount of soil
7
As a result of diffusion, the concentration of many types of substancess
always remains greater on the outside of a membrane
becomes inbalanced on both sides of a membrane
eventually becomes balanced on both sides of a membrane
always remians greater insdie a membrane
8
Which of the following does not expend energy?
pinocytosis
sodium-potassium pump
diffusion
phagocytosis
9
Following a chemical reaction, the products contain more energy than the reactants. It is ____.
mesothermic
epithermic
exergonic
endergonic
10
Which number represents the organelle involved in cellular division?
8
6
13
11
11
The movement of water molecules across a selectively permeable membrane is known as:
endocytosis
exocytosis
osmosis
phagocytosis
12
The energy needed to start a chemical reaction is called
activation energy
electrical energy
chemical energy
mechanical energy
13
Which of the following statements is incorrect?
animals don't have cell walls, plants do
animals have a central vacuole, plants don't
plants have chloroplasts, animals don't
plants have a central vacuole, animals don't
14
Which organelle controls the cell’s activities?
nucleus
mitochondrion
nucleolus
endoplasmic reticulum
15
The image shown is nucleus. Inside it, the DNA exists as
chromosomes
none of the above
chromatin
RNA
16
Where would you MOST likely find water molecules?
A only
B only
A and C
C only
17
Which of the following organelles are ABSENT in a bacterial cell?
cell wall
mitochondria
cytoplasm
cell membrane
18
The movement of water molecules across a selectively permeable membrane is known as
diffusion
osmosis
free moving proteins
eukaryote
19
Which of the following examples illustrates osmosis?
digestive enzymes are excreted into small intestine
water leaves the kidney when hypertonic fluid surrounds it
white blood cells consume pathogens at the site of infection
calcium is pumped inside a muscle cell after contraction
20
The constant random motion of particles is called ____ motion
Virchowian
Hookian
Brownian
Schwanian
21
Which of the following correctly sequences the scientific method?
experiment, hypothesis, data, results
observe, question, testable explanation, experiment, data
hypothesis, observe, investigate, analyze data, results
question, observe, explain, experiment, data, results
22
The endosymbiotic theory is an attempt to explain the presence of ____ in the eukaryotic cell.
Mitochondria and chloroplasts
mitochondria and flagella
Ribosomes and chloroplasts
ribosomes and flagella
23
Which cell organelle is correctly paired with its function?
Nucleus – provides carbohydrates for fermentation
Mitochondrion – DNA production
Chloroplast – serves as a site for photosynthesis
Centriole – synthesizes digestive enzymes
24
The following can affect diffusion rates (choose all that apply)
concentration gradient
temperature
particle size
pressure
25
In a microscope, you see the following. This means the specimen moved in which direction?
upward
left
right
downward
26
A substance that moves by passive transport tends to move:
toward the area where it is more concentrated
away from the area where it is less concentrated
away from the area of equilibrium
away from the area where it is more concentrated
27
Which process allows the movement of gases illustrated by the arrows in the following diagram?
osmosis
transpiration
phagocytosis
diffusion
28
Which solution is best to water your plant with? (which will lead to "turgid" cells)
supertonic
hypertonic
isotonic
hypotonic
29
A cell that exists in a broad range of environments, rapidly multiplies, lacks a nucleus is a
animal
prokaryote
plant
eukaryote
30
Food is refrigerated at temps of 2°-7° C. Which explains why these temps slow food spoilage?
bacteria that cause spoilage are activated at these temps
enzymes in bacteria that cause spoilage work well at 2-7°
bacteria that cause spoilage multiply at these temps
enzymes in bacteria that cause spoilage are inactive at 2-7°
31
Which of the following is not a monomer of carbohydrates?
glycogen
fructose
galactose
glucose
32
Which of the following is the smallest unit as shown on the metric ruler below?
kilometer
centimeter
hectometer
millimeter
33
Sodium chloride (table salt) is an example of which of the following?
an element
radioactive isotope
chemical formula
chemical compound
34
Of the following, which is considered a living organism?
nucleus
golgi body
mitochondrion
bacteria
35
A 10% salt solution is placed on a leaf on a slide and observed. Which is expected?
cells shrink due to movement of water out of the cells
cells remain same size
cells swell due to movement of water into cell
36
pH in body fluids is controlled by the kidneys. This is an example of the organism maintaining
homeostasis
reabsorption
insulation
hibernation
37
This cell is "turgid" or swollen. What type of solution is it in?
hypertonic
your face tonic
hypotonic
isotonic
38
Animals store excess carbohydrates as
starch
glycogen
glucose
cellulose
39
In active transport, particles are moved:
against their concentration gradient
down their concentration gradient
40
Which statement about the cell is most likely correct?
C utilizes carbon dixoide in the process of photosynthesis.
A synthesizes and secretes cellular products
B contains nucleotides for transmitting genetic information
D is the site of aerobic respiration
41
The threadlike structures of the cell that contains the genetic information are the
mitochondria
nuclei
chromosomes
ribosomes
42
If an atom has an atomic # of 6 and atomic mass of 12, how many neutrons does it have?
12
0
2
6
43
Which of the following are the basic building blocks of lipids?
monosaccharides
fatty acids + glycerol
amino acids
nucleotides
44
If placed in a hypertonic solution, a plant cell will
shrink in size
remain constant in size
swell
burst
45
What was the growth of Plant C during the period from 8/15 to 8/17?
9 cm
3 cm
unable to determine
6 cm
46
Which BEST describes the purpose of science?
to explain the nature of things
to do experiments
to solve ethical problems
to debate the meaning of life
47
The following organelle would be MOST LIKELY found in large amounts in muscles of sprinters
golgi body
ribosomes
mitochondria
endoplasmic reticulum
48
If a cell was placed in a concentrated salt water solution, it would
divide
swell
grow
shrink
49
If pure water were injected into a blood vessel, the red blood cells would MOST likely
shrink
swell and potentially burst
release salts into the surrounding solution
release hemoglobin via osmosis
50
Which of the following organisms is a prokaryote?
bacteria
mushroom
tree
algae
51
Unlike prokaryotic cells, eukaryotic cells have the capacity to
obtain energy from the Sun
establish symbiotic relationships with other organisms
store genetic information in the form of DNA
assemble into multicellular organisms
52
This red blood cell is crenated (shrunken). What solution has it been placed in?
catatonic
Hypotonic
Hypertonic
Isotonic
53
At which temp and pH does the enzyme function best?
Temp of 40 and pH of 7
Temp of 10 and pH of 5
Temp of 60 and pH of 10
Temp of 60 and pH of 6
54
Which of the following are the basic building blocks of protein?
nucleotides
fatty acids
monosaccharides
amino acids
55
Deduce from the graph the independent variable.
amount of light
amount of water
plant height
amount of soil
56
Ridding the cell of material by discharging it from vesicles at the cell surface is called
endocytosis
exorcism
exocytosis
chemiosmosis
57
Lipase, maltase and protease are members of a group of catalysts known as
carbohydrates
hormones
fats
enzymes
58
Biology is the study of
animals
life
molecules
science
59
A typical cell memmbrane is a
fluid bilayer, made mostly of proteins with some lipids
fluid bilayer, made mostly of lipids with some proteins
rigid bilayer, made mostly of proteins with some lipids
rigid bilayer, made mostly of lipids with some proteins
60
Because it is often difficult to gather numerical data, ____ information is also collected.
qualitative
ethical
scientific
quantitative
61
Which of the following are the basic building blocks of DNA?
fatty acids
nucleotides
amino acids
monosaccharides
62
In a scientific experiment, how many independent variables should be tested at the same time?
three or more
two
one
none
63
Which of the following is NOT true concerning cells?
All cells contain a cell wall.
Life functions occur in cells.
The basic unit of all living things is the cell.
Prokaryotic cells do not contain a nucleus.
64
What is the name of the organelle circled?
mitochondrion
chloroplast
ribosome
Golgi apparatus
65
Which of the following environmental changes causes an increase in rates of reactions in cells?
decreased enzyme concentrations
increased activation energy requirement
increased temperature
decreased diffusion rates
66
Which number represents the organelle that makes lipids and breaks down toxic substances?
13
11
8
6
67
What is the height of Plant A on the final day of the experiment?
7 cm
1 cm
5 cm
9 cm
68
Which of the following are the basic building blocks of carbohydrates?
monosaccharides
fatty acids
amino acids
nucleotides
69
What type of molecule is made up of amino acids?
cholesterol
protein
carbohydrate
fat
70
The diagram below represents a white blood cell engulfing some bacteria. "X" is most likely
a vesicle
a nucleus
DNA
a ribosome
71
If some molecules in area A move to area B, the movement is the result of the process of
active transport
locomotion
diffusion
pinocytosis
72
Convert 20 mg to kg.
200 kg
0.00002 kg
20,000,000 kg
0.02 kg
73
Inside eukaryotic cells are membrane-bound structures called
cytoplasm
organelles
cilia
cell walls
74
Which diagram best represents the structure of a cell membrane?
C
B
D
A
75
This is NOT a characteristic of a cell membrane
not permeable
embedded proteins
flexible
phospholipid bilayer
76
The total number molecules in C₁₂H₂₂O₁₁is ____.
1
45
12
22
77
Which cell organelle uses the process of cellular respiration?
cytoplasm
cell wall
mitochondrion
nucleus
78
Which of the following “organisms” is considered to be an exception to the cell theory?
yeast
amoeba
bacteria
viruses
79
What types of materials are expelled from cells during exocytosis?
positive and negative ions
water
small molecules such as carbon dioxide
large molecules such as protein
80
Which of the following molecules provides the greatest amount of energy per gram of mass?
nucleic acid
lipid
protein
carbohydrate
81
Which is the best evidence that an experiment is not scientifically valid?
The experiment uses methods that have never been tried
the experiment cannot be repeated and confirmed by others
the experiment uses new technology to test a hypothesis
the experiment tests a totally new hypothesis
82
Facilitated diffusion occurs through the cell membrane by
carbohydrates on the surface
cholesterols embedded in the membrane
peripheral proteins
transmembrane proteins
83
Which of the following is a method of maintaining homeostasis in the human body?
planting flowers
shivering when cold
applying suntain oil
working in air conditioning

Unit 1: Intro to Biology and Cells Flashcards | StudBud