Biology

True

Mutations can occur during replication

True

The 220 different cell types in the human body each contain all of the same DNA found in every other cell type.

True

Switching the order of the last two organisms on an evolutionary tree has no effect on how the tree is read.

occurs when a new species emerges from a population in the absence of a geographical barrier

Sympatric speciation

true

Sympatric speciation can occur in the absence of geographic isolation.

false

Sympatric speciation requires geographic isolation of populations

False

Vestigial organs had a function in a previous ancestor but no longer have a function in the current species.

the production of each involves bacteria

What do these products have in common- beer, yogurt, swiss cheese, and buttermilk?

Hydrogen bonds

What ensures that the complementary DNA strand opposite a template stand has the correct sequence of bases?

UAG-GCA

What mRNA codons would be produced form the DNA sequence ATGCGT?

Sympatric speciation

2 closely related species lives in same area but don't interbreed cause they don't find each other attractive, spectated through

Thermophilic

archaea are typically found in abnormally hot environments.

the morphological species concept

the fossils of 2 adult birds are found in large valley, physically the bird fossils look different. form each other, what are scientists most likely to use to classify these 2 species.

u

the nitrogenous base found in RNA but not in DNA is..

complementary

the relationship between strands of newly transcribed RNA and its DNA template strand is

Protein

Which molecule is capable of forming the most possible combinations of information in a 4 monomer long sequence?

RNA

Which molecule is considered an information TRANSFER molecule, rarely existing for long?

mRNA, tRNA, rRNA

Which molecules are involved in translation

RNA polymerase

Which of the following adds new nucleotides to a growing mRNA transcript?

They control the production of all proteins

Which of the following best describes the function of genes?

translation

Which of the following doe not take place in the nucleus?

salamanders of California

Which of the following groups demonstrates the formation of ring species as a result of geographic isolation?

u

Which of the following is not a base found in DNA?

Eukarya

Which of the following is not a kingdom?

Plasma membrane

Which of the following is shared by all prokaryotic and eukaryotic cells?

substitution

Which of the following mutational types would be the least likely to change the phenotype of a trait?

TCTAGGC

Which of the following nucleotide sequences represents the complement to the DNA strand AGATCCG?

allopatric speciation

A large population of animals is split in two by a physical barrier. Over time, the genetic makeup of the two resulting populations becomes more and more different, until each population becomes a operate species. This is an example of...

The promoter might not be recognized by RNA polymerase, so the enzyme would be unable to and start transcription

A mutation occurs in the promoter of a protein encoding gene. How might this mutation affect the production of the protein encoded by the gene?

pre zygotic isolation

Polyploidy in plants can lead to

2

A DNA molecule usually is made up of how many strands?

1

A RNA molecule is usually made up of how many strands?

Anaerobic

A bacterium might not be able to survive in the presence of oxygen

is transcribed into RNA

A gene is a DNA sequence that

false

A population will control its own size when resources become scarce.

Plantae

A researcher has just discovered what she thinks is a new species. Initially, all she know is that it is eukaryotic. Further analysis reveals the organism in question relies on other organisms for a source of energy. Which kingdom can now be excluded for this organism?

gene

A sequence of DNA that contains information for the production of RNA is also known as a

none of the above

All RNA except for is made from DNA.

have a single chromosome

Bacteria

all of these

Bacteria can obtain their nutrition by

Introns are removed from RNA and the remaining eons are connected to form a mature mRNA

During RNA splicing:

RNA polymerase

During protein syntheses, ribosomes, attach to the mRNA molecule. the component labeled B is:

Binds to a codon; binds to an anticodon

Each tRNA molecule has a site at one end that and a site at the other end that .

pollon trasports a gamete several miles to another population of flowers

Example of gene flow?

the zygote fails to develop

Example of post zygotic barrier?

information must be transcribed into mRNA and then translated acids.

For the information contained in a gene to be used to produce a functioning protein,

False

Form the very start, lipids were thought to be a good candidate for the hereditary material because geneticists believed it was a complex molecule.

gene flow

Geographic isolation is said to occur whenever populations are separated by a distance that is great enough to limit.

gene flow

Geographic isolation limits the between populations of a species

Archaea

In addition to the bacteria, which other kingdom is comprised exclusively of prokaryotic organisms?

hydrogen bonds are used

In the pairing of two nucleotides within the double helix.

genetic drift

In the wizard of oz........ in evolutionary example of this is...

Floating around

In bacteria, DNA is found

mutations overcome genetic drift across physical barriers

In general geographical isolation occurs when

more RNA for aromatase is produced

In humans the herbicide atrazine helps RNA polymerase bind to the promoter of the gene for the enzyme aromatase more often than normal as a result.

all of the above

In order to determine relationships among different organisms scientists can examine.

4

In terms of their base component, how many different kinds of RNA nucleotides are there?

More, because more mutations will go uncorrected

Is a species that lacks DNA repair mechanisms likely to have more of fewer variations between individuals than a species that possesses repair mechanisms?

do not specify a particular amino acid but do provide instructions such as "stop"

OF all the different codons that exist, several of them...

prokaryotic transcription and translation both take place in the cytoplasm

Prokaryotes lack membrane bound organelles and thus do not have nuclei, therefore,

False

Speciation cannot occur without geographic isolation.

True

The degree of genetic variation present in a species is one of the factors that potentially limits the evolutionary effect of an adaptation.

can occur slowly or rapidly

The formation of a new species

Catastrophism

The idea that all organisms existed at the beginning in large extinction events is called...

archaea

The methane-producing organisms, like those in your gut, belong to which domain?

Differs form species to species

The order of the base pairs in a DNA molecule:

unrelated to the organisms separated by one or more branch points.

The organisms most distant form the base of an evolutionary tree are

exons

The portion of the RNA molecule that is translated is composed only of:

if demonstrated that harmless cells had become permanently transformed through a transfer....

The significance of Fred Griffith's experiment in which he used two strains of bacteria is that..

Sugar and phosphate

The two molecules that alternate to form the backbone of a nucleic acid are:

False

Translation builds RNA from an DNA template.

occurs during production of any type of RNA from a DNA template

Transcription

False

Two populations that are geographically isolated will always diverge into two species.

organisms known only from fossils

Using reproductive isolation as a method of defining a species is NOT useful for

TAC

What would DNA sequence be for the codon AUG

Substitution

When one base is changed to another at a single position in the DNA sequence of a gene, a mutation has occurred.

Animalia and fungi

Which of the following pairs of kingdoms would be included exclusively in the domain Eukarya?

nucleotides bases on opposite strands of the double helix

Which of the following parts of a DNA molecule are held together by hydrogen bonds?

tRNA

Which of the following serves as an adapter in protein synthesis and bridges the gap between mRNA and proteins?

Bacteria are not cellular and are sometimes not classified as life forms.

Which of the following statements about bacteria is false?

halophiles

Which of the following terms describes organisms hat can survive in extremely salty environments?

All of the above

Which of the following would you expect to find in a sample of DNA from one of your liver cells?

an archaean

Which of the following would you most likely find surviving in a boiling-hot spring?

morphological

Which species definition would be most appropriate for classifying asexual organisms?

They are prokaryotic

Which statement about bacteria is true?

Mice injected with heat-killed S bacteria die

Which statement is NOT true about Fred Griffith's experiments?

Promoter, RNA polymerase, transcription

Without the site on a molecule of DNA, cannot bind to the DNA to begin the process of .

true

adaptive radiation can only take place in the presence of reproductive isolation.

False

evolution will always result in increasingly complex organisms.

prevents the bacteria from making essential proteins

in bacteria, the antibiotic tetracycline blocks the site where tRNA molecules inter the ribosome. The most likely reason that bacteria die form treatment with tetracycline is because the antibiotic,

mutation

several mechanisms can change the composition of a populations gene pol but only does so by creating new alleles

false

similar to genes that code for proteins, the products of genes that code for rRNA and tRNA must also undergo translation.

bacteria and archaea

when success is defined as the greatest number off living individuals, earth's most successful inhabitants are the

C

which letter indicates the template strand