Semester one exam guide Flashcards
1
Q
True or False? energy is stored in glucose.
A
True
2
Q
True or False? ATP has three attached phosphate groups.
A
True
3
Q
True or False? Autotrophs and heterotrophs carry out respiration.
A
True
4
Q
Before the Krebs’s cycle can proceed, pyruvic acid must be converted into what?
A
C. Acetyl CoA
5
Q
The products that result from respiration are what?
A
B. CO2, H2O, and energy
6
Q
The starting substance of the Krebs Cycle which is regenerated at the end of the Cycle is what?
A
C. Oxaloacetic acid
7
Q
When cells break down glucose they release what?
A
B. CO2
8
Q
Glycolysis occurs in the where?
A
D. cytosol
9
Q
The Krebs Cycle occurs in the what?
A
C. mitochondrial matrix
9
Q
ATP is synthesized in the electron transport chain when BLANK moves across the mitochondrial membrane.
A
B. Protons
10
Q
During glycolysis, glucose is…?
A
B. Partially broken down and some energy is released
11
Q
Both lactic acid fermentation and alcoholic fermentation both produce what?
A
D. NAD+ from NADH and H+
12
Q
In lactic acid fermentation…?
A
A. NAD+ is regenerated for use in glycolysis
13
Q
What is the process that releases chemical energy for use by the cell?
A
respiration
14
Q
Pathway of aerobic respiration in which FADH2 is produced.
A
Krebs Cycles
15
Q
In aerobic respiration, one molecule of glucose produces ten molecules of what?
A
NADH
16
Q
unit of energy
A
kilocalorie
17
Q
location of electron transport chain in prokaryotes
A
cell membrane
18
Q
Location of glycolysis
A
cytosol
19
Q
What is the complete and balanced equation for cellular respiration?
A
C6H12O6 + 6O2 ——–> 6H2O + 6CO2 + energy
20
Q
What molecule determines whether pyruvic acid will undergo fermentation or the Krebs Cycle?
A
Oxygen
21
Q
What molecule does the Krebs Cycles make that the electron transport chain uses?
A
NADH and FADH2
22
Q
What molecule made during glycolysis is used in later during steps in fermentation?
A
Pyruvic acid
23
Q
True or false: The rate of photosynthesis is independent of temperature but is affected by changes in light intensity
A
false
24
True or false: C4 and CAM plants use less water to produce the same amount of carbohydrate as C3 plants
false
25
True or false: Plant cells use light to make ATP and NADPH
true
26
True or false: Carbon dioxide and water, in the presence of sunlight, will react to form sugars and oxygen gas
True
27
True or false: The major light-absorbing pigment in plants is chlorophyll
true
28
True or false: photosystems are clusters of light-absorbing pigments located on the thylakoids of a chloroplast
true
29
True or false: When light hits a plant, all the wavelengths are absorbed and used to make sugar
false
30
True or false: In photosynthesis, light energy is used to break down a molecule of glucose
false
31
True or false: Most plants carry out CAM (crassulacean acid metabolism).
false
32
True or false: The light reactions of photosynthesis can occur only under light conditions, and the dark reactions occur only during the dark hours.
False
33
True or False: Animals that live exclusively on a diet of other animals are unable to use carbohydrates to fuel their life processes.
False
34
Chlorophyll a:
absorbs mostly orange - red and blue - violet light
35
The photosystems and electron transport chains are in the:
thylakoid membrane
36
Both Photosystems l and Photosystem ll:
contain chlorophyll a molecules
37
Water participates directly in the light reactions of photosynthesis by:
donating electrons to photosystem ll
38
The energy that is used to establish the proton gradient across the thylakoid membrane comes from :
splitting of water
39
Organic compounds that can be made from the products of the Calvin cycle include:
carbohydrates, amino acids, and lipids
40
C3 and C4 plants differ in terms of the number of:
carbon atoms in the compound that CO2 is initially incorporated to
41
As light intensity increase, the rate of photosynthesis:
initially increases and then levels off
42
what product of the light reactions of photosynthesis is released and does not participate further in photosynthesis
O2
43
Where does the energy required for the Calvin cycle originate?
ATP and NADPH produced by the light reactions
44
Protons are moved into the thylakoid using energy from:
ATP
45
Carbon atoms are fixed into organic compounds in:
electron transport chain
46
to produce the same amount of carbohydrate, C4 plants require less:
carbon dioxide than C3 plants
47
The number of phosphate groups in an ADP molecule is:
Two
48
ATPase is an enzyme used to BLANK phosphate groups.
break off
49
Read the false statement and correct. High - energy electrons move along the thylakoid membrane from photosystem l to photosystem ll.
photosystem l and photosystem ll switch places in sentence
50
Read the false statement and correct. The oxygen atoms in the oxygen gas produced in photosynthesis come from carbon dioxide.
carbon dioxide should be water in the sentence.
51
Read the false statement and correct. Stomata of pineapples are open only partially during the day.
day should be night in the sentence.
52
Read the false statement and correct. ATPsynthase is an enzyme that catalyzes the breakdown of ATP.
ATPsynthase should be ATPase in the sentence.
53
Read the false statement and correct. In photosynthesis, light is used to break down carbohydrates.
carbohydrates should be water in the sentence
54
what are the reactant of photosynthesis (not just the light / dark reactions)
H2O and CO2
55
what are the overall end products of photosynthesis (not just the light / dark reactions)
oxygen and glucose
56
what is an example of a plant that uses the C4 pathway?
corn
57
What are the end products of light reactions of photosynthesis?
ATP and NADPH
58
what is the region of the chloroplast where the Calvin cycle occurs?
stroma
59
what is the region of the chloroplast where the light reactions occur
lumen / thylakoids
60
what are the pores that regulate the movement of CO2 into and out of a plant
stomata
61
site of calvin cycle
stroma
62
accessory pigment
chlorophyll b
63
site of light reactions
thylakoids
64
relies on a concentration gradient of protons
chemiosmosis
65
first stage of photosynthesis
light reactions
66
pigment directly involved in light reactions
chlorophyll a
67
adaptation to hot, dry climate
CAM pathway
68
In the Calvin cycle, there are BLANK molecules of ATP use and BLANK molecules of NADPH used in each turn
3, 2
69
Using (CH2O) as the general formula for a carbohydrate, write the simplest overall equation for photosynthesis
(sunlight) + H2O + CO2 -----> CH2O + O2
70
Describe the structure of a chloroplast. Be sure to include thylakoids, stroma, grana, and lumen.
The structure of a chloroplast is comprised of thylakoids, the stroma, grana, and the lumen. Thylakoids are flattened sacs and a stack of these thylakoids is called a grana. A sugar substance surrounds this and is called the stroma. The lumen is found inside of the thylakoids and is where the light reactions occur.
71
Stomata can open and close in response to changes in the CO2 concentration inside a leaf. Would you expect stomata to open or close if the CO2 concentration decreased? Explain.
I would expect the stomata of a leaf to open if the CO2 concentration decreased so that more CO2 could be let in.
72
The three substances produced when water molecules are broken down during the light reactions are:
oxygen
protons
electrons
73
which does not belong and why?
electron transport chain
chemiosmosis
calvin cycle
photosystem ll
The Calvin cycle is the only one that is light-independent.
74
Explain the function of accessory pigments
Accessory pigments are pigments that you can see whenever there is not enough sunlight for the color of the chlorophyll to be present.
75
Which photosystem (l or ll) most likely evolved first and explain why.
Photosystem ll likely evolved first because it denotes electrons to photosystem l causing sunlight to hit the water splitting it into oxygen, protons, and electrons.
76
Why does the rate of photosynthesis increase, peak, and the decrease as temperature increases?
The rate of photosynthesis increases, peaks, and then decreases as temperature increases, because the rate of photosynthesis changes depending on the amount of sunlight it is receiving.
77
What are the pancakes of the photosynthetic world?
thylakoids / grana is the stack
78
What is the pancake syrup of the photosynthetic world?
stroma
79
What is another term for the Calvin Cycle?
Dark reaction, light-independent reactions
80
True or false: Diffusion is the movement of particles from areas of lower to areas of higher concentration
false
81
True or false: Contractile vacuoles collect excess water and squeeze it out of the cell
True
82
True or false: Pinocytosis and phagocytosis are examples of exocytosis.
False
83
True or false: The sodium-potassium pump moves ions against the concentration gradient
true
84
True or false: Active transport is the movement of particles in response to random molecular movement
false
85
True or false: Oxygen molecules enter the cell by osmosis
false
86
True or false: A cell with a high turgor pressure is probably in a hypotonic solution
true
87
True or false: In active transport, energy is required to move a substance across a cell membrane.
true
88
True or false: Gated channels provide a mechanism for active transport
false
89
True or false: Endocytosis is a form of active transport
true
90
True or false: The outermost surface of a cell membrane is hydrophobic
false
91
True or false: Facilitated diffusion requires a new abosrbtion of energy
false
92
True or false: Osmosis is diffusion of carbon dioxide through a membrane
false
93
True or false: contractile vacuoles pump water into cells
false
94
True or false: Diffusion occurs only in living systems
false
95
True or false: cytolysis occurs when water leaves a cell and the cell wilts
false
96
Diffusion and osmosis are examples of:
passive transport
97
Pinocytosis and phagocytosis are both examples of:
endocytosis
98
Which of the following terms describes the condition of a cell that wilts as a result of water loss?
plasmolysis
99
The extent to which plant cell will swell is limited by the:
cell wall
100
The word part cyto- means:
cell
101
Passive transport is the movement of any substance across a membrane without the use of:
cell energy
102
Osmosis is a form of what?
diffusion
103
The part of the cell that function to maintain homeostasis relative the cell's environment:
cell membrane
104
When turgor pressure of a cell is high, a plant:
is rigid
105
Hypotonic solutions will:
swell
106
Glucose enters a cell by:
facilitated diffusion
107
According to the sodium-potassium pump, as BLANK ions leave, BLANK ions enter the cell.
3, 2
108
When cells in a plant have low turgor pressure, the cell:
wilts
109
Carrier proteins are important in:
facilitated diffusion
110
Some animal cells engulf, digest, and destroy invading bacteria through the process of:
phagocytosis
111
substances that can pass through cell membranes by diffusion include:
oxygen
112
The contractile vacuole of a paramecium is active when the paramecium is in a BLANK environment.
hypotonic
113
When a human red blood cell is placed in a hypotonic environment, it will:
undergo cytolysis
114
Facilitated diffusion is often used to transport:
ions
115
The word part phago- means:
to eat
116
The energy needed to power the sodium-potassium pump is provided by the:
splitting of ATP
117
Facilitated diffusion carrier proteins and cell-membrane pumps both:
are specific for substances they transport
118
the loss of water from a cell can result in a change from BLANK to BLANK
turgor, plasmolysis
119
Na+ ions enter the cells by:
diffusing through cannels
120
Which of the following occurs in pinocytosis?
fluids move in
121
The sodium-potassium pump transports:
molecules spreading out evenly
122
The cell must use energy to transport substances by using:
sodium-potassium pump
123
Facilitated diffusion is best interpreted as:
a passive form of carrier transport
124
Plasmolysis refers to a cell's:
shriveling
125
"Gated" ion channels function to:
Transport by diffusion through the channels
126
During diffusion, molecules tend to move:
down their concentration gradient
127
Passages the permit a cell membrane to be permeable:
ion channels
128
proteins that aid in the transport of molecules across the cell membrane:
carrier proteins
129
"gated" ion channels are passages across all membranes that are controlled by:
stimuli / proteins
130
bacteria ingest food through the process of:
phagocytosis
131
movement of molecules in response to a concentration gradient
diffusion
132
Packaged proteins are removed from cells through the process of:
Exocytosis
133
The passive form of carrier transport is called:
diffusion
134
A cell that looks shriveled has undergone the process of what?
playmolysis
135
Explain what happens when a freshwater plant is placed in seawater.
When a freshwater plant is placed in sea water, water leaves the cell to try and dilute the salt in the water around it causing the cell to undergo plasmolysis due to the lack of water in the cell.
136
Explain the difference between pinocytosis and phagocytosis.
Pinocytosis is the process by which cells ingest fluids while phagocytosis is when cells ingest large macromolecules.
137
Explain the difference between endocytosis and exocytosis.
Endocytosis is when cells ingest fluids, large insoluble molecules, or other things, and exocytosis is when cell get rid of those things.
138
Describe the following solutions by explaining the direction of water's movement and why.
Isotonic
-water goes in and out of the cell at the same rate
-same amount of solute in and out of the cell
-equilibrium
139
Describe the following solutions by explaining the direction of water's movement and why.
hypotonic
-Water goes into the cell to dilute the solute
-More solute inside the cell than outside
-may burst / cytolysis
140
Describe the following solutions by explaining the direction of water's movement and why.
Hypertonic
-Water leaves the cell to so that the inside of the cell does not have more solvent than solute
-More solute outside of the cell than inside
-may shrivel and wilt / plasmolysis
141
In the boxes, draw a cell in each of the solutions and label the water and solute molecules.
Isotonic
blob with the same amount of dots on the inside and outside, label arrows of H2O going in and out
142
In the boxes, draw a cell in each of the solutions and label the water and solute molecules.
Hypotonic
blob with more dots inside than outside, label arrows of H2O going in
143
In the boxes, draw a cell in each of the solutions and label the water and solute molecules.
Hypertonic
blob with more dots outside than inside, label arrows of H2O going out
144
outer boundary of the cell
plasma membrane
145
digests molecules, old organelles, etc.
lysosome
146
cellular structure on which proteins are made
ribosome
147
transfers energy to ATP
mitochondrion
148
prepares proteins for export and synthesizes steroids
endoplasmic reticulum
149
Ribosomes are found on the BLANK endoplasmic reticulum
rough
150
Spherical organelle that is the site of protein synthesis
ribosomes
151
scientist who first concluded that all animals are made up of cells:
Schwann
152
cytoskeleton of a cell is composed of these three protein structures:
microfilaments
microtubules
intermediate filaments
153
kinds of molecules that had "heads" and "tails"
phospholipids
154
Level of biological organization represented by the heart:
organ
155
In multicellular organisms, tissues group together to form:
organs
156
Two types of organic molecules found in a cell membrane:
phospholipids and not carbohydrates but probably proteins
157
True or false: Robert Hooke was the first person to observe living organisms
false
158
True or false: skin is an example of a tissue
false
159
True or false: most plant cells lack lysosomes
true
160
True or false: Cristae are part of cell's mitochondria
true
161
True or false: An organ may contain more than one type of cell
true
162
The lipid bilayer of the plasma membrane:
all of these
163
Which of the following is one difference between prokaryotes and eukaryotes?
eukaryotes contain mitochondria
164
the discovery cells is liked most directly with:
the development of the microscope
165
Microscopes were used to study cells beginning in the:
17th century
166
Which scientist determined that cells come only from other cells?
Virchow
167
As a cell becomes smaller, its surface area to volume ratio:
increases
168
Which of the following could be found in prokaryote
flagellum
169
Which part of the plasma membrane helps cells recognize each other
carbohydrates
170
Which of the following helps plant cells remain rigid?
central vacuole
171
Which of the following organelles enable plants to make carbohydrates for carbon dioxide and water?
chloroplast
172
The nucleus of a cell contains all of the follow except:
mitochondria
173
Which type of molecule is found in the plasma membrane:
All of these
174
In which of the following types of cells would you expect to find many mitochondria
muscle
175
The fluid mosaic model describes the:
cell membrane
176
Which of the following is a basic component of the cell wall?
cellulose
177
Which of the following is an example of a plant organ?
root
178
Which of the following is found in animal cells?
nuclear envelope
179
which of the following scientists first determined that all plants are made of cells?
Schleiden
180
Which organelle selectively destroys tissue to shape the body during development?
lysosome
181
A prokaryotic cell came to live inside a eukaryotic cell and evolved into
mitochondria
182
State the cell theory
all cells come from other cells
cell are the basic unit of life's functions
all living things are made of cells
183
name two different kinds of animal cells and describe how their shape is related to their function
White blood cells can change shape to fit through narrow passageways and skin cells are flat allowing to cover your body and flake off once dead.
184
What are three differences between plant and animal cells?
Plant cells contain a large central vacuole, a cell wall, and plastids, while animal cells do not.
185
What are the levels of organization in a multicellular organism in order from the basic unit
cells, tissues, organs, organ systems
186
What are some things that the lysosome can digest?
enzymes and any other extra waste in the cell, such as nucleolus and old organelles
187
How are the organs of a multicellular organism like the organelles of a single cell?
The organs of a multicellular organism have specialized functions in the multicellular organism just like the organelles do in a single cell.
188
Give three examples of animal organs and three examples of plant organs
animal- liver, lungs, heart
plant- stem, leaf, roots
189
Where is the nucleolus and what is its function?
The nucleolus is found inside of the nucleus and its function is to create ribosomes
190
What is the internal structure of both cilia and flagella and what is the main function of both cilia and flagella?
The internal structure of both cilia and flagella are made of nine microtubules surrounding two other microtubules and the main function of both of them is to help with movement
191
What is the greatest difference between the rough ER and the smooth ER
rough ER contains ribosomes
192
What are the three substances plant cell walls are made of?
cellulose, pectin, Ligman
193
True or False: A nucleotide contains a five-carbon sugar
true
194
True or False: A large polymer is called a macromolecule
true
195
True or False: steroids are found in both plants and animals
true
196
True or False: water is an effective solvent of polar molecules
true
197
True or False: Isomers differ in molecular composition
false
198
True or False: the cell membrane is composed of mostly lipids
true
199
True or False: the linkage of an enzyme to its substrate strengthens the chemical bonds of the substrate
false
200
True or False: the hydrocarbon end of a fatty acid molecule is hydrophilic
false
201
True or False: water is a polar compound
true
202
True or False: Enzymes are reused by the cell
true
203
True or False: the monomers of a DNA molecule are nucleotides
true
204
True or False: When two carbohydrates monomers join, a dipeptide results
false
205
True or False: functional groups are groups of carbon compounds that confer specific properties to compounds
false
206
Which of the following sugars is a disaccharide?
sucrose
207
Which of the following types of polymers is composed of carbon rings?
steroids
208
Long fatty acid chains joined to long alcohol chain form the type of lipid called:
a wax
209
The ratio of hydrogen to oxygen atoms in a carbohydrate is:
2:1
210
The breakdown of polymers into monomers occurs through a process known as:
hydrolysis
211
Insulin is best categorized as a:
protein
212
How many electrons does a carbon atom have in its outer energy level?
4
213
Which of the following is a carbohydrate?
sucrose
214
amino acids are monomers of:
proteins
215
A triglyceride is a type of:
lipid
216
The skin of animals is made primarily of:
protein
217
The polysaccharide that strengthens plant cells is called:
cellulose
218
C6H12O6 is an example of a molecular formula for a:
sugar
219
A disaccharide is classified as a:
carbohydrate
220
Which of the following molecules is a storage form of glucose in animals?
glycogen
221
Which of the following components is part of a nucleotide?
phosphate group
222
Two polysaccharides that store glucose are:
starch and glycogen
223
A phospholipid molecule contains all of the following except:
three fatty acids
224
A lipid is composed of the elements carbon, oxygen, and:
hydrogen
225
Plants store glucose in the form of a polysaccharide called:
starch?
226
A polypeptide is formed from the bonding of three or more:
amino acids?
227
Compounds consisting of repeated linked units are known as:
polymer?
228
Each unit of a polymer is called:
monomer
229
Triglycerides that are liquid at room temperature are called:
unsaturated
230
ratio of one carbon; two hydrogen: one Oxygen
carbohydrate
231
cluster of atoms that influence the molecules they compose
functional group
232
molecule made of repeating units
polymer
233
functions in protein synthesis
RNA
234
forms large molecules from smaller ones
condensation reaction
235
monomer / subunit of most lipids
fatty acid
236
Explain how the variety of organic compounds would be different if carbon had seven electrons in its outermost energy level instead of four.
There would be much less variety in organic compounds if carbon had seven valence electrons instead of four because it would be able to bond with less.
237
How do the triglycerides found in animals differ from those found in plants?
Triglycerides in animals are in the form of saturated fats while triglycerides in plants are in the form of unsaturated oils.
238
Explain the difference between inorganic and organic compounds. Be sure to site two examples of each.
Organic compounds are all mostly comprised of carbon while inorganic compounds usually do not contain carbon. an example of an inorganic compound is water and salt. an example of an organic compound is a (carbohydrate?).
239
How does a condensation reaction differ from a hydrolysis reaction?
A condensation reaction is the formation of a polymer by monomers while a hydrolysis reaction is the breaking down of a polymer to form monomers
240
Arrange the following in size, form smallest to largest: polymer, carbon atoms, monomer, macromolecule
carbon atom, monomer, polymer, and a macromolecule
241
List the four organic compound, and name their monomer
-carbohydrates, monomer = monosaccharides
-lipids, monomer = fatty acids
-proteins, monomer = amino acids
-nucleic acids, monomer = nucleotides
242
List the three things that make each nucleotide found in RNA and DNA
phosphate group
five carbon sugar
nitrogen base
243
True or False: Capillarity occurs when a straw in water has a higher water level than the surrounding container
true
244
True or False: Exergonic reactions involve a net absorption of energy
false
245
True or False: Particles of a liquid have greater kinetic energy than particles of a solid
true
246
True or False: the linkage of an enzyme to its substrate probably strengthens the chemical bonds of the substrate
false
247
True or False: The atomic number of carbon is six, so it must contain twelve electrons
false
248
True or False: Temperature fluctuations in the cell are minimized as a result of the adhesive property of water
false
249
True or False: water is an effective solvent of polar molcules
true
250
True or False: In comparison to other liquids, water cools down very quickly
false
251
True or False: Plasma is aqueous solution that contains dissolved nutrients and gases
true
252
True or False: The burning of paper is an endergonic reaction
false
253
True or False: When pure water dissociates, it contains an equal number of hydroxide ions and hydronium ions
true
254
True or False: Sodium chloride is an example of a compound formed by ionic bonding.
true
255
The breaking up of an ionic compound is know as:
dissociation
256
Of the following elements, the one that is most likely to form ionic bonds is:
sodium
257
When water dissociates, it forms:
H+ ions and OH- ions
258
What are aqueous solutions containing a high concentration of hydronium ions called?
acids
259
Reduction-oxidation reactions:
involve a transfer of electrons between atoms
260
In chemical reactions, the number of each kind of atom in the reactant is:
the same as in the products
261
Term for a solution in which no additional solid will dissolve:
Super Saturated Solution
262
Term for a solution in which solute "falls out" of solution:
Super Saturated Solution
263
Defined as the ability to do work:
energy
264
absorbs free energy
endergonic reaction
265
particle composed of one or more atoms
molecule
266
releases free energy
exergonic reaction
267
Do the chemicals that digest nutrients in the stomach work only in ana acidic or basic environment? Explain.
The chemicals that digest nutrients in the stomach work only in an acidic environment because the acid is needed to break down the proteins in our food.
268
Define: acid solution. What is the pH range of acids? what is the pH of the strongest acid? Give an example of an acid solution.
An acid solution is comprised of more hydronium ions than hydroxide ions. The pH range of an acid is 0-7. The pH of the strongest acid is 0. An example of an acid solution is acid rain.
269
Explain why water can soak through a piece of fabric or paper, while some other liquids will remain only on the surface of the same fabric or paper. Hint: think about one of water's unique properties...
This is because of adhesion which is the tendency of water to stick to a different surface.
270
Explain why water is a good solvent.
Water is a good solvent because of its polarity and positive and negative charges.
271
List two aqueous solutions important to living things.
Kool-aid, rain
272
give an example of an acid solution
lemon juice
273
give an example of a basic solution
ammonia
274
define buffer
a neutralizer for substances that are only a little bit acidic or a little bit basic
275
To maintain internal organization, all living things must have a constant supply of:
energy
276
A small part used to represent an entire population is called a:
sample
277
a microscope with a 10x ocular lens and 25x objective lens has a total magnification power of:
250x
278
An example of a domain is:
Eukarya
279
Photosynthesis is a part of a plant's:
metabolism
280
a "tree of life" explains:
all of these
281
power to show details clearly in an image
resolution
282
sum of all chemical processes of an organism
metabolism
283
produces greatly magnified image of internal detail
TEM
284
structure made of tissues
organ
285
produces greatly magnified images of surface details
SEM
286
True or False + correcting: The process in which a zygote becomes a mature individual is called phylogeny
false, development
287
True or False + correct: Cell enlargement is the orderly formation of new cells from a parent cell
false, cell division and enlargement
288
True or False + correcting: In general, resolution is higher in a light microscope than that in an electron microscope.
False, resolution is higher in an electron microscope because it scans vacuum sealed electrons
289
All living things maintaining a balance within cells and the environment called:
homeostasis?
290
In an electron microscope, an electron beam is focused by:
magnets
291
Estimating the number of a population using a smaller population:
sampling
292
The lens closest to the specimen on a light microscope is called:
objective lens
293
What is natural selection?
natural selection is the process by which a female chooses the best possible mate so that her children may have a higher survival rate possibly causing a poor trait to die out of a species.
294
Arrange the following parts in order that matches the light path through a light microscope: specimen, ocular lens, objective lens, light source, stage, body tube.
light source to stage to specimen to objective lens to body tube to ocular lens
