Question 11 pts
What is a mutation?
A dangerous alteration in the genes of a living organism.
Any change in the base sequence of an organism's DNA.
Any genetic alteration in an organisms physical appearance.
A broken piece of a DNA molecule.
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Question 21 pts
How many "genetic words" are there in the genetic code formed by combining three DNA bases together?
64
32
128
26
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Question 31 pts
What is the shape of a DNA molecule?
A double helix.
a circle.
a hexagon.
a concave surface.
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Question 41 pts
Which of the following is not one of the DNA bases used by living organisms on Earth?
Adenine.
Galline.
Thymine.
Cytosine.
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Question 51 pts
What is the genome of an organism?
The longest of its DNA molecules.
The complete sequence of DNA bases in all its DNA.
The noncoding parts of the DNA.
All the genes in an organism's DNA.
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Question 61 pts
The process by which DNA is copied to be passed on to the next generation of an organism is called:
DNA replication.
DNA unzipping.
Cell division.
Genetic mutation.
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Question 71 pts
If every cell in your body has exactly the same DNA, why are brain cells different from muscle cells?
Because they are located in different parts of your body.
Because different types of cells use different pieces of the same DNA.
Because the noncoding DNA behaves differently in different cell types.
Because while all cells in your body may have the same DNA, they have different genomes.
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Question 81 pts
Which kind of extreme environment are psychrophiles able to survive?
Extremely low pressure.
Extreme heat.
Extreme cold.
Extreme acidity.
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Question 91 pts
What are thermophiles ?
Organisms that live in extremely cold conditions.
Organisms that live in extremely hot conditions.
Organisms that live in extremely acidic conditions.
Organisms that can live in highly radioactive environments.
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Question 101 pts
What characteristic is the bacterial species Deinococcus Radiodurans known for?
For being discovered on radio antennas.
For being able to survive high doses of radiation.
For being able to live inside rocks.
For being the first life discovered on Mars.
Question 11 pts
What is a mutation?
| A dangerous alteration in the genes of a living organism. |
| Any change in the base sequence of an organism's DNA. |
| Any genetic alteration in an organisms physical appearance. |
| A broken piece of a DNA molecule. |
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Question 21 pts
How many "genetic words" are there in the genetic code formed by combining three DNA bases together?
| 64 |
| 32 |
| 128 |
| 26 |
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Question 31 pts
What is the shape of a DNA molecule?
| A double helix. |
| a circle. |
| a hexagon. |
| a concave surface. |
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Question 41 pts
Which of the following is not one of the DNA bases used by living organisms on Earth?
| Adenine. |
| Galline. |
| Thymine. |
| Cytosine. |
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Question 51 pts
What is the genome of an organism?
| The longest of its DNA molecules. |
| The complete sequence of DNA bases in all its DNA. |
| The noncoding parts of the DNA. |
| All the genes in an organism's DNA. |
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Question 61 pts
The process by which DNA is copied to be passed on to the next generation of an organism is called:
| DNA replication. |
| DNA unzipping. |
| Cell division. |
| Genetic mutation. |
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Question 71 pts
If every cell in your body has exactly the same DNA, why are brain cells different from muscle cells?
| Because they are located in different parts of your body. |
| Because different types of cells use different pieces of the same DNA. |
| Because the noncoding DNA behaves differently in different cell types. |
| Because while all cells in your body may have the same DNA, they have different genomes. |
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Question 81 pts
Which kind of extreme environment are psychrophiles able to survive?
| Extremely low pressure. |
| Extreme heat. |
| Extreme cold. |
| Extreme acidity. |
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Question 91 pts
What are thermophiles ?
| Organisms that live in extremely cold conditions. |
| Organisms that live in extremely hot conditions. |
| Organisms that live in extremely acidic conditions. |
| Organisms that can live in highly radioactive environments. |
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Question 101 pts
What characteristic is the bacterial species Deinococcus Radiodurans known for?
| For being discovered on radio antennas. |
| For being able to survive high doses of radiation. |
| For being able to live inside rocks. |
| For being the first life discovered on Mars. |
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Related questions
Question 401 pts
Kinetic energy is the stored energy that can be used for motion.
| True |
| False |
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Question 411 pts
When an electron is transferred from one atom to another, and the two atoms are then electrically attracted to one another, a(n) ________________ bond is formed.
| ionic |
| kinetic |
| covalent |
| hydrogen |
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Question 421 pts
Changing the number of ____________ of an atom would change the chemical properties of the atom.
| neutrons |
| protons |
| electrons |
| electron shells |
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Question 431 pts
Forming molecules and breaking down molecules in biological organisms usually requires the use of _________ to help the reaction proceed faster.
| oil |
| heat |
| enzymes |
| blood |
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Question 441 pts
Organic molecules have a core composed of .
| carbon |
| nitrogen |
| phosphorus |
| hydrogen |
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Question 451 pts
The building blocks of carbohydrates are
| polypeptides |
| amino acids |
| nucleotides |
| monosaccharides |
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Question 461 pts
Water molecules crossing a membrane from high to low concentration is .
| active transport |
| cell fate |
| facilitated diffusion |
| osmosis |
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Question 471 pts
Choose the membrane molecule responsible for the passage of polar molecules and ions into and out of the cell.
| phospholipids |
| transmembrane channel proteins |
| cell surface proteins |
| carbohydrate chains |
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Question 481 pts
The simplest cells are .
| prokaryotic |
| animal cells |
| eukaryotic |
| cells of fungi |
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Question 491 pts
Which of the following membrane bound organelles are found inside bacterial cells:
| nucleus |
| organelles are not found in prokaryotic cells |
| mitochondria |
| chloroplasts |
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Question 501 pts
Which of the following is a specialized components of the cell, is associated with the rough endoplasmic reticulum, and is responsible for making proteins.
| vacuoles |
| ribosomes |
| golgi complex |
| nucleus |
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Question 511 pts
Proteins are sorted, modified, and packaged by the _____________ and later transported to the outside of the cell.
| ribosomes |
| golgi bodies (golgi apparatus) |
| nucleus |
| mitochondria |
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Question 521 pts
Dehydration synthesis is a process of linking two smaller subunits together to form a polymer. Which of the following statements below is true of dehydration synthesis?
| Oxygen is consumed. |
| A water molecule is removed from the molecules. |
| A water molecule is added to the molecules |
| Carbon dioxide is given off. |
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Question 531 pts
Proteins are made up of _________ held together by peptide bonds.
| monomers |
| monosaccharides |
| polymers |
| amino acids |
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Question 541 pts
Which of the following gives an amino acid its properties?
| NH2 |
| R Group or functional group |
| COOH |
| H |
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Question 551 pts
The final three-dimensional shape of a protein that includes the bonding of two or more polypeptide chains is call its _____ structure.
| Tertiary |
| Quaternary |
| Secondary |
| Primary |
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Question 561 pts
How do DNA and RNA differ?
| all statements are differences between DNA and RNA. |
| DNA is double stranded while RNA is single stranded. |
| They have different sugars. |
| Thymine is present in DNA but not in RNA. |
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Question 571 pts
Which of the following is a component of a DNA nucleotide?
| phosphate |
| a nitrogen containing base |
| All are components of a nucleotide. |
| 5-carbon sugar |
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Question 581 pts
Cell membranes are made up of several different types of molecules. Select the membrane molecule below that is made up of a polar region and two non-polar fatty acid tails.
| transmembrane proteins |
| carbohydrate chains |
| phospholipids |
| cell surface proteins |
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Question 591 pts
Two organelles which are believed to have once been free-living bacterial cells are ____________ and ______________.
| chloroplasts and mitochondria |
| golgi apparatus and endoplasmic reticulum |
| ribosomes and nucleolus |
| peroxisomes and lysosomes |
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Question 601 pts
The is an extensive system of internal membranes responsible for producing carbohydrates and lipids.
| smooth endoplasmic reticulum |
| rough endoplasmic reticulum |
| nucleolus |
| mitochondria |
Random, chance events that change allele frequencies are knownas:
| A. Gene flow |
| B. Genetic drift |
| C. Natural selection |
| D. Balancing selection |
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Question 21 pts
What type of selection acts to maintain the two extremephenotypic variants in a population?
| A. Disruptive selection |
| B. Directional selection |
| C. Positive selection |
| D. Artificial selection |
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Question 31 pts
Approximately, how much of our DNA is shared with our closestrelatives, chimpanzees?
| A. 100% |
| B. 98.9% |
| C. 88.3% |
| D. 75.8% |
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Question 41 pts
The large canines of male baboons are likely the result of________, while the fact that some male baboons are very colorfulis probably the result of _______.
| A. Mutation; balancing selection |
| B. Gene flow; sexual dimorphism |
| C. Male competition; female choice |
| D. Mate choice; genetic drift |
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Question 51 pts
Negative assortative mating results in an increased frequency ofhomozygous genotypes within a population.
| True |
| False |
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Question 61 pts
Genetic evidence suggests that humans and Neandertals neverinterbred.
| True |
| False |
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Question 71 pts
The specific variant of the FOXP2 gene associated with languageacquisition in humans is found in both humans and Neandertals.
| True |
| False |
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Question 81 pts
Industrial melanism describes the change in moth color from paleto dark after pollution from factories resulted in coating treetrunks with a layer of dark soot. Which statement is trueconcerning industrial melanism?
| A. After pollution levels increased, all moths became darkercolored because soot got on their wings |
| B. The dark moths survived better after pollution levelsincreased because they were not poisoned by the pollutants |
| C. Individual moths changed their color in response to thepollution |
| D. Dark moths were present in the population before pollutionlevels increased |
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Question 91 pts
Patterns of evolution can be seen above the species level
| True |
| False |
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Question 101 pts
Inbreeding is problematic because it increases the probabilitythat offspring inherit two copies of a recessive mutation thatcauses disease.
| True |
| False |
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Question 111 pts
As a species, cheetahs seem to have a high risk of extinctionbecause:
| A. Gene flow has caused a proliferation of unnecessarygenes. |
| B. The species' genetic diversity is very low due to a previouspopulation bottleneck event. |
| C. The species has undergone extreme sexual selection in orderfor males to achieve faster running speeds. |
| D. Gene flow has been stifled due to an increase in demand forcaptive cheetahs. |
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Question 121 pts
A strand of DNA undergoes mutation. Which mutation occurred?
Original DNA- GGA CTC TTA CCC CAC GGA
Mutated DNA- GGG CTC TTA CCC CAC GGA
| A. point mutation |
| B. insertion mutation |
| C. deletion mutation |
| D. inversion mutation |
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Question 131 pts
A change from one nucleotide to another nucleotide is known as awhat?
| A. Point mutation |
| B. Insertion mutation |
| C. Deletion mutation |
| D. Inversion mutation |
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Question 141 pts
A change from one nucleotide to another nucleotide is known as awhat?
| A. point mutation |
| B. insertion mutation |
| C. deletion mutation |
| D. inversion mutation |
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Question 151 pts
According to the Typological Species Concept, species are:
| A. An interbreeding group of organisms |
| B. Static entities endowed with fixed properties |
| C. A local population of organisms that have similargenes, interbreed, and produce offspring |
| D. An exclusive community of gene exchange |
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Question 161 pts
Recognizing reproductive isolation is key to defining speciesunder the Biological Species Concept.
| True |
| False |
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Question 171 pts
The binomial system of classification was developed by:
| A. Darwin |
| B. Wallace |
| C. Linnaeus |
| D. Malthus |
| E. None of the above |
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Question 181 pts
A derived trait, unique to a particular taxon within a givencladogram is called:
| A. Synapomorphy |
| B. Apomorphy |
| C. Analogy |
| D. Autapomorphy |
| E. Symplesiomorphy |
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Question 191 pts
Analogy, and not homology, is useful for reconstructingevolutionary history.
| True |
| False |
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Question 201 pts
A phylogeny is which of the following:
| A. A depiction of an organism's complete genome |
| B. A depiction of evolutionary relationships betweenorganisms |
| C. The gradual evolution of one species intoanother |
| D. The Latin name of an organism including its genus andspecies designation |
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Question 211 pts
Blood cells placed in pure water will burst because there is a net movement of water out of the cell.
| True |
| False |
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Question 221 pts
Photosynthesis takes place in tiny organelles within the cell known as mitochondria.
| True |
| False |
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Question 231 pts
The balanced chemical equation for cellular respiration is
C6H12O6 + 6O2 รขยย 6CO2 + 6 H2O + 36 or 38 ATP
| True |
| False |
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Question 241 pts
A catalyst is anything that speeds up a chemical reaction.
| True |
| False |
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Question 251 pts
Kinetic energy is the energy an object possesses due to its motion.
| True |
| False |
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Question 261 pts
Changes in temperature and pH may speed up or slow down the activity of an enzyme.
| True |
| False |
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Question 271 pts
There are 20 different amino acids.
| True |
| False |
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Question 281 pts
The products of the light-dependent reactions of photosynthesis are oxygen, ATP, and NADPH.
| True |
| False |
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Question 291 pts
Which of the following is NOT a component of the Cell Theory?
| Cells arise only by division of a previously existing cell. |
| Cells are the smallest units of structure and function |
| All organisms are composed of one or more cells. |
| Cells can vary their shape and size to suit the environment for survival. |
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Question 301 pts
What is the name of the two subatomic particles that can be found in the nucleus of an atom?
| neutrons and electrons |
| protons and neutrons |
| protons and electrons |
| protons and morons |
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Question 311 pts
Atoms that have either a positive or negative charge are known as:
| ions |
| magnetic |
| lacking nuclei |
| electrically neutral |
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Question 321 pts
An atom with an unfilled outer energy level (electron shell) is likely to be:
| inert |
| unable to form bonds with other atoms |
| reactive |
| extremely stable |
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Question 331 pts
All living things are able to maintain stable internal conditions. This is known as
| metabolism |
| homeostasis |
| heredity |
| cellular organization |
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Question 341 pts
Which of the following is NOT considered to be one of the five basic properties shared among living organisms?
| made of one or more cells |
| grow and reproduce |
| posses DNA |
| need oxygen to survive |
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Question 351 pts
CFCs (Chlorofluorocarbons) in the stratosphere cause:
| global warming due to increased CO2 |
| increase ozone levels by converting O2 to O3 and decreasing UV passage to Earth. |
| act as a catalyst to destroy ozone increasing UV passage to Earth. |
| increased ice crystal formation that cools the earth. |
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Question 361 pts
The process by which traits are passed from parents to offspring is known as:
| heredity |
| homeostasis |
| complexity |
| movement |
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Question 371 pts
Alcoholic fermentation occurs in muscle cells of the human body.
| True |
| False |
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Question 381 pts
If carbon has 6 protons and 6 neutrons, how many electrons must it have to be electrically neutral?
| 3 |
| 36 |
| 6 |
| 12 |
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Question 391 pts
The loss of an electron is known as _______; the gain of an electron is known as ________.
| reduction; oxidation |
| transduction; adduction |
| oxidation; reduction |
| removal; addition |
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Question 401 pts
Kinetic energy is the stored energy that can be used for motion.
| True |
