Biology Toughest Practice Quiz: Test!
(171).jpg "Biology Toughest Practice Quiz: Test! - Quiz")
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- 1.
Organic compounds contain
- A.
Carbon and usually other elements
- B.
Many kinds of elements except carbon
- C.
Only carbon
- D.
Only carbon and nitrogen
Correct Answer
A. Carbon and usually other elements -
- 2.
The number of covalent bonds a carbon atom can form with other atoms is
- A.
8
- B.
2
- C.
3
- D.
4
Correct Answer
D. 4 -
- 3.
The breakdown of polymers involve
- A.
Hydrolysis
- B.
Condensation
- C.
Polar reactions
- D.
Hydrophobic interactions
Correct Answer
A. Hydrolysis -
- 4.
Carbohydrates
- A.
Contain only Carbon and Hydrogen
- B.
Contain only Carbon and Oxygen
- C.
Contain Carbon Hydrogen and Oxygen in a 1:2:1 ratio
- D.
Contain Carbon Hydrogen and Nitrogen in a 1:2:1 ratio
Correct Answer
C. Contain Carbon Hydrogen and Oxygen in a 1:2:1 ratio -
- 5.
Lipids
- A.
Contain only Carbon and Hydrogen
- B.
Contain only Carbon and Oxygen
- C.
Contain only Carbon Hydrogen and Oxygen
- D.
Contain only Carbon Hydrogen Oxygen and Nitrogen
Correct Answer
C. Contain only Carbon Hydrogen and Oxygen -
- 6.
All the following are lipids except
- A.
Fatty Acids
- B.
Phospholipids
- C.
Olive Oil
- D.
Maltose
Correct Answer
D. Maltose -
- 7.
All the following are carbohydrates EXCEPT
- A.
Glucose
- B.
Cellulose
- C.
Dextrose
- D.
Catalase
Correct Answer
D. Catalase -
- 8.
Foods that contain mostly carbohydrates include all the following EXCEPT
- A.
Potatoes
- B.
Gummy Bears
- C.
Pasta
- D.
Steak
Correct Answer
D. Steak -
- 9.
Examples of monomers include all the following expect
- A.
Monosaccharides
- B.
Disaccharides
- C.
Amino acids
- D.
Glucose
Correct Answer
B. Disaccharides -
- 10.
Hookes's discovery of cells was made by observing
- A.
Living algal cells
- B.
Living human blood cells
- C.
Dead plant cells
- D.
Dead protist cells
Correct Answer
C. Dead plant cells -
- 11.
The smallest units of life in all living things are
- A.
Cells
- B.
Mitochondria
- C.
Cytoplasm
- D.
Golgi apparatus
Correct Answer
A. Cells -
- 12.
When the volume of a cell increases, its surface ares
- A.
Increases at the same rate
- B.
Remains the same
- C.
Increases at a faster rate
- D.
Increases at a slower rate
Correct Answer
D. Increases at a slower rate -
- 13.
The size to which a cell can grow is limited by its
- A.
Location
- B.
Structure
- C.
Function
- D.
Surface area
Correct Answer
D. Surface area -
- 14.
Surface area is an important factor in limiting cell growth because
- A.
The cell can burst if the membrane becomes to large
- B.
Materials cannot enter the if the surface is too large
- C.
The cell may become too large to take in enough food and to remove enough waste
- D.
Waste products cannot leave the cell if the cell is too small
Correct Answer
C. The cell may become too large to take in enough food and to remove enough waste -
- 15.
One difference between prokaryotes and eukarotes is that
- A.
Nucleic acids are found in only prokaryotes
- B.
Mitochondria are found in larger quantities in eukaryotes
- C.
The Golgi apparatus is found only in prokaryotes
- D.
Prokaryotes have no nucleic membrane
Correct Answer
D. Prokaryotes have no nucleic membrane -
- 16.
Which of the following is a characteristic of prokaryotes?
- A.
They have a nucleus
- B.
They existed on Earth before eukaryotes
- C.
They organelles in their cytoplasm are surrounded by membranes
- D.
None of the above
Correct Answer
B. They existed on Earth before eukaryotes -
- 17.
Which of the following is an example of a prokaryotic cell?
- A.
An amoeba
- B.
A virus
- C.
A bacterium
- D.
A liver cell
Correct Answer
C. A bacterium -
- 18.
Studying a picture of a cell taken within an electron microscope, you find that the cell has no nucleus and no mitochondria, but it does have a plasma membrane and a cell awl. You can conclude that the cell is probably a(n)
- A.
Animal
- B.
Plant
- C.
Prokaryote
- D.
Extinct organism
Correct Answer
C. Prokaryote -
- 19.
Diffusion takes place
- A.
Only through a lipid bilayer
- B.
From an area of low concentration to an area of high concentration
- C.
Only in liquids
- D.
From an area of high concentration to an area of low concentration
Correct Answer
D. From an area of high concentration to an area of low concentration -
- 20.
The dispersal of ink in a beaker of water is an example of
- A.
Diffusion
- B.
Osmosis
- C.
Selective transport
- D.
Endocytosis
Correct Answer
A. Diffusion -
- 21.
As a result of diffusion, the concentration of many types of substances
- A.
Always remains greater inside a membrane
- B.
Eventually becomes balanced on both sides of a membrane
- C.
Always remains greater on the outside of a membrane
- D.
Becomes unbalanced on both sides of the membrane
Correct Answer
B. Eventually becomes balanced on both sides of a membrane -
- 22.
Molecules that can simple diffuse through the cell membrane (pass throng the lipid bilayer) are typically
- A.
Large and in charge
- B.
Small and polar
- C.
Ionic
- D.
Non-olar
Correct Answer
B. Small and polar -
- 23.
When tow solutions in different concentrations are separated by a membrane, there is a difference in concentration across the space. This is known as a
- A.
Concentration difference
- B.
Concentration gradient
- C.
Soulte differential
- D.
Water differential
Correct Answer
B. Concentration gradient -
- 24.
Autotrophs are organisms that can
- A.
Produce food from inorganic molecules and sunlight
- B.
Survive without energy
- C.
Consume other organisms for energy
- D.
Carry out aerobic respiration
Correct Answer
A. Produce food from inorganic molecules and sunlight -
- 25.
The process whereby plants capture energy and make complex molecules is known as
- A.
Homeostasis
- B.
Evolution
- C.
Photosynthesis
- D.
Development
Correct Answer
C. Photosynthesis -
- 26.
Suspended in the fluid stroma of chloroplasts are
- A.
Organelles called eukaryotes
- B.
Numerous mitochondrial membranes
- C.
Small coins that provide energy
- D.
Stacks of thylakoids called grana
Correct Answer
D. Stacks of thylakoids called grana -
- 27.
The sun is considered the ultimate source of energy for life on Earth because
- A.
All organisms carry out photosynthesis
- B.
All organisms carry out respiration
- C.
Either photosynthetic organisms or organism that have eaten them provide energy for all other organisms on Earth
- D.
The sun heats Earth's atmosphere
Correct Answer
C. Either photosynthetic organisms or organism that have eaten them provide energy for all other organisms on Earth -
- 28.
When light strikes an object, the light may be
- A.
Reelected
- B.
Absorbed
- C.
Transmitted
- D.
All of the above
Correct Answer
D. All of the above -
- 29.
The role of chlorophyll in photosynthesis is to
- A.
Absorbed light energy
- B.
Pass electrons to carotenoids
- C.
Split water molecules
- D.
All of the above
Correct Answer
A. Absorbed light energy -
- 30.
Chlorophyll is green because
- A.
It absorbs green wavelengths of light
- B.
It absorbs blue and yellow wavelengths, which makes green.
- C.
It reflects green wavelengths of light
- D.
It transmits light and causes an optical illusion
Correct Answer
C. It reflects green wavelengths of light -
- 31.
What happens when a chlorophyll molecules absorbs light?
- A.
Some of its elections are raised to a higher energy level
- B.
It disintegrates, giving off high amounts of heat
- C.
It glows, radiating green light and giving the plant a green appearance
- D.
It attracts electrons from other molecules
Correct Answer
A. Some of its elections are raised to a higher energy level -
- 32.
When electrons of a chlorophyll molecules are raised to a higher energy level,
- A.
They become a particle of light
- B.
They form a glucose bond
- C.
They enter an electron transport chain
- D.
They enter the Calvin cycle
Correct Answer
C. They enter an electron transport chain -
- 33.
The sugar in DNA is
- A.
Ribose
- B.
Glucose
- C.
Deoxyribose
- D.
Guanine
Correct Answer
C. Deoxyribose -
- 34.
The difference between RNA and DNA is in the
- A.
Phosphate group
- B.
Nitrogen containing base
- C.
Sugar
- D.
B and C
Correct Answer
D. B and C -
- 35.
The names of the scientists that discovered that DNA is a double helix are
- A.
Hershey and Chase
- B.
Avery and Mendel
- C.
Watson and Crick
- D.
Ben and Jerry
Correct Answer
C. Watson and Crick -
- 36.
Replication occurs
- A.
During S phase
- B.
During G1 phase
- C.
During G2 phase
- D.
During mitosis
Correct Answer
A. During S phase -
- 37.
The bonds in the sugar-phosphate backbone of the double helix are
- A.
Hydrogen bonds
- B.
Covalent bonds
- C.
Ionic bonds
- D.
James bonds
Correct Answer
B. Covalent bonds -
- 38.
The bonds between bases in the double helix are
- A.
Hydrogen bons
- B.
Covalent bonds
- C.
Ionic bonds
- D.
James bonds
Correct Answer
A. Hydrogen bons -
- 39.
The age of Earth is estimated to be approximately
- A.
2 million years
- B.
2 billion years
- C.
2 trillion years
- D.
4 billion years
Correct Answer
D. 4 billion years -
- 40.
Which of the following gases was thought by Oparin to be part of Earth's early atmosphere?
- A.
Oxygen
- B.
Ozone
- C.
Ammonia
- D.
Carbon dioxide
Correct Answer
C. Ammonia -
- 41.
In their experiment, Miller and Urey produced
- A.
Energy
- B.
Microorganisms
- C.
Radioactive isotopes
- D.
Amino acids
Correct Answer
D. Amino acids -
- 42.
RNA
- A.
Was probably the first genetic molecule
- B.
Can undergo natural selection and thus can evolve
- C.
Probably evolved before DNA
- D.
All of the above
Correct Answer
D. All of the above -
- 43.
RNA
- A.
Has a three-dimension structure
- B.
Is a nucleic acid
- C.
Can act like an enzyme
- D.
All of the above
Correct Answer
D. All of the above -
- 44.
Scientists have inferred that the first cells were
- A.
Prokaryotic and autotrophic
- B.
Prokaryotic and heterotrophic
- C.
Eukaryotic and autotrophic
- D.
Eukaryotic and heterotrophic
Correct Answer
B. Prokaryotic and heterotrophic -
- 45.
The surface of Earth is protected from damming ultraviolet light by
- A.
Oxygen
- B.
Ozone
- C.
Hydrogen
- D.
Nitrogen
Correct Answer
B. Ozone -
- 46.
Which of the following is most likely a vestigial structure?
- A.
The human tailbone
- B.
The beak of a finch
- C.
Flower color
- D.
A fossil of a snail
Correct Answer
A. The human tailbone -
- 47.
Homologous structures in organisms provide evidence that the organisms
- A.
Share a common ancestor
- B.
Must have lived at different times
- C.
Have skeletal structure
- D.
Are now extinct
Correct Answer
A. Share a common ancestor -
- 48.
Anatomical structures that appear to be derived from a functional strutter in an ancestor, but that current do not served as unimportant function, are called
- A.
Inorganic
- B.
Mutated
- C.
Fossilized
- D.
Vestigial
Correct Answer
D. Vestigial -
- 49.
Evidence that evolution occurs includes all the following except
- A.
Acquired characteristics
- B.
Similarities and differences in proteins and DNA sequences between organisms
- C.
The fossil record
- D.
Homologous structures among different organisms
Correct Answer
A. Acquired characteristics -
- 50.
Atoms are composed of
- A.
Protons with s positive charge
- B.
Neutrons with no charge
- C.
Electrons with a negative charge
- D.
All of the above
Correct Answer
D. All of the above -
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Mar 17, 2022Quiz Edited by
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Jun 06, 2014Quiz Created by
Brians238
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