All Biology Quizzes

A human egg cell normally has

Populations of the same species living in different environments:

Amino acids are held together by ____ when a protein is formed

What type of trait's inheritance is affected by sex?

A species that has disproportionately large effects on other community members is called a:

Nitrogenous base pairs in DNA are held together by

An interaction between members of two DIFFERENT species is called:

"The giraffe stretched its neck to eat, so its offspring have longer necks" is wrong because

Nondisjunction:

A small amount of an organism's energy is passed on because some is used for life and some is:

What are the possible genotypes of the children of a O woman and AB man?

Which of the following was NOT a part of Darwin's Theory of Evolution

Individual with a dominant and a recessive allele for a trait

Crossing-over is a way to increase genetic variation in offspring within a population. It:

Which type of fragments migrate the fastest in gel electrophoresis?

The increased milk production in cows in the past 100 years has been developed through

Which characteristic of a trait isn't required for natural selection to act on that trait?

The difference between anaphase of mitosis and anaphase 1 of meiosis is that

Discovered bacterial transformation from mice experiments

The "backbone" of the DNA molecule (legs of ladder) is made up of

The cells resulting from meiosis in either males or females are called

Male gametes are produced through the process of

If there is 30% Guanine in a strand of DNA, how much thymine is there?

When given the sequence "CGA ATC TGT AAC" what should the complementary sequence be?

Which of the following statements is (are) true about homologous chromosomes

What caused the difference in the western white butterfly that we studied?

Organism has 8 tetrads (beginning). How many chromosomes are in each cell at end of meiosis?

Mitosis results in ____ cells, whereas meiosis results in ____ cells

What does the butterfly situation an example of

what is the original source of most of the energy in all ecosystems?

A woman with Type B- has lost a lot of blood. Which could the hospital give her?

The process that organisms with traits well suited to environment are more likely to survive is

Which molecule consists of DNA from one organism spliced into a bacterial DNA molecule?

A Punnett square showing Mendel's cross of a tall and short plant would show the F1 offspring

Restriction enzymes do which of the following

Parts of a DNA sequence that do NOT code for a protein are called

When crossing-over takes place, chromosomes

What are the three parts of a DNA nucleotide? List them from left to right how they appear

Why do scientists load DNA of known sizes (a DNA 'ladder') into agarose gel?

When bacterial cell transformation is successful, the recombinant DNA molecule formed

"Sticky ends" can be helpful in creating which of the following

During PCR, what is the purpose of heating the DNA?

Which of the following describes a substance that triggers an immune response?

Determined DNA base pairs were A-T and C-G

What is the purpose of PCR?

Every diploid organism receives ___ alleles for each inherited trait

Separation of homologous chromosomes occurs during

Nitrogen fixation is carried out PRIMARILY by:

What enzyme is responsible for proofreading new DNA nucleotides during DNA replication?

Which of the following is NOT something that Darwin observed during his voyage on the Beagle?

If there is 30% Guanine in a strand of DNA, how much cytosine is there?

Which occurs more quickly (requires LESS time): primary of secondary succession?

What enzyme brings together Okazaki fragments?

If there is 30% Guanine in a strand of DNA, how much adenine is there?

Gel electrophoresis sorts DNA molecules on the basis of their

A gene that is expressed only in the homozygous state

Zygotes occur when

A phenotype is a

A Punnett square shows all of the following EXCEPT

What is the Universal Donor blood type?

Describe what would happen to a carrying capacity if there was a DECREASE in shelter and food.

Nondisjunction can result in

Darwin learned that the earth was very old, and there was enough time for his theory thanks to

If the liver cells of an animal have 24 chromosomes, its sperm cells would have how many?

Variation exists within the genes of every population/species as a result of

Crossing over occus during which stage of meiosis?

Calico cats display orange and black patches of fur because of

The Independent Assortment of chromosomes occurs

The union of a sperm cell with an egg cell is known as _____

What is TRUE in graph A above?

The maximum population size that an environment can sustain is called:

Evolution is the theme that ties together all of biology. This is because evolution

Which of the following is NOT a threat to biodiversity?

A potential disadvantage of asexual reprodution is that

Which of the following is TRUE about the pairing of nitrogenous bases in DNA?

Received Nobel Prize for describing the 3-D shape of DNA

Which of the following separates second in meiosis?

Bacteria often contain small circular molecules of DNA known as

One which end of a new DNA strand are nucleotides added?

During transcription, the enzyme responsible for making mRNA is

The fossil record provides evidence that

Different variations of genes for a single trait

The function of the DNA molecule is to

Physical appearance of an organism

The grass in the image is a:

Which of the following is an example of a polygenic trait?

The part of the cell where transcription takes place is the

Which of the following is considered a ecosystem service?

Allele combinations represented as letters

The relationship where the fish benefits by eating scraps and the shark is not affected is:

The arge ground finch obtains food by cracking seeds. Its short, strong beak is an example of

Which organisms are always found in the first trophic level of a food chain or a food web

When a trait is governed by 2+ sets of alleles on different pairs of chromosomes, it is _______

Which of the following descriptions of an ecosystem is correct?

The method of PCR resembles what biological process?

Which of the following is true of meiosis?

What is NOT a difference between DNA and RNA?

The change in frequency in colors of peppered moths during the Industrial Revolution was due to

The expected phenotypic ratio for a monohyrid cross of 2 heterozygotes (complete dominance) is

Each 3-nucleotide sequence on mRNA that specifies an amino acid is called a(n)

In nature, the purpose of restriction enzymes is to

Alleles for the same trait separate into different gametes. This is a way to state

Phenotypes of polygenic traits typically display a distribution pattern of

Darwin called the ability of an organism to survive and reproduce in its environment

The main component of chromosomes

Where is the information contained in DNA?

Blood type is NOT an example of

Recombination (crossing over) occurs

When in the cell cycle does DNA replication occur in cells?

Different finch species with different beak structures are evidence of

Lamarck's theory includes the concept that new traits in a species appear because of

Nondisjunction would be caused by a failure of which of the following of Mendel's laws?

Which of the following is a factor in natural selection?

The cell is first considered haploid at which stage of meiosis?

X-ray diffraction photos revealed the spiral shape of DNA

Any variation that can help an organism survive in its environment is called a(n)

Due to natural selection, an inherited mutation that lowers an individual's fitness

All of the following take place during prophase 1 except

Natural selection acts on

The grass in the image could also be described as a(n):

By examining an individual's karyotype, one can determine

Which of these genotypes is heterozygous?

DNA is attracted to what type of charge?

Darwin learned that an overproduction of organisms leads to differences in survival thanks to

How many kilocalories are available to the organisms next to the box? (fill in the box)

Pieces of DNA created by restriction enzymes are called

X-linked traits are more common in males than in females because

The part of the cell where translation takes place is the

Which of the following is a density-dependent factor limiting population growth?

Spotted hyenas have a diploid number of 40 chromosomes (2N=40). What is their haploid number?

The fact that Darwin found fossils of many organisms that didn't resemble living species shows

What charge does a DNA molecule carry?

Which of the following would be a RESULT of eutrophication?

The principle that states that 2 organisms CAN'T occupy the same niche in same place/time is:

What process produced the different types of finch beaks?

When homologous chromosomes pair, the are collectively called a

Transfer RNA (tRNA) ______

Which of these genotypes is homozygous recessive?

A type of nitrogenous base found in nucleic acids

On the Galápagos Islands, Charles Darwin observed

What type of trait's expression is affected by sex?

Traits that offer advantages become more common in following generations because

What antigen does a person with O+ blood have?