Biology Questions

The tRNA nucleotide sequence that pairs with bases on the mRNA is called a n intron O exon O codon O initiation factor Q anticodon QUESTION 40 When a polypeptide is being assembled the bond that forms between a newly added amino acid and the previous amino acid in the chaim a bond O hydrogen O hydrophobic O terminal O phosphodiester

Which base in an anticodon will pair with the base adenine in a codon O thymine O cytosine O guanine Ouracil QUESTION 34 A codon is composed of how many bases O one O two Othree O four GA

Who proposed that the structure of DNA is a double helix with two polynucleotide chains running in opposite directions and held together by hydrogen bonding between pairs of nitrogenous bases O Hershey and Chase O Chargaff O Franklin O Watson and Crick O Meselson and Stahl QUESTION 18 Deoxyribose has a carbon atom that is not part of the pentose ring In a nucleotide what is attached to this carbon O a nitrogenous base O a phosphate group O three hydrogen atoms

In eukaryotic cells transcription occurs on the surface of the nuclear membrane on ribosomes on spliceosomes inside the nucleus on the surface of the plasma membrane QUESTION 38 During replication sequencing transcription translocation translation nucleotide sequence information is changed into amino acid sequence informat

An organism has been found to contain a defective form of photolyase What function might be impaired in this organism r Lengthening of the tips of chromosomes Repair of DNA damage caused by UV light Stabilization of single stranded DNA during DNA replication Recognition of damaged DNA by the UvrABC complex QUESTION 26 The sequence of nucleotides in a DNA molecule is called the O protein ribosomal translation genetic amino acid code

QUESTION 29 The connection that exists between genes and hereditary traits is based on using the information encoded in genes to synthesize O codons O nucleotides O proteins O histones O complementary bases QUESTION 30 The one gene one enzyme hypothesis was proposed by O Watson and Crick O Griffith Garrod O Franklin Beadle and Tatum

During translation amino acids are carried to the ribosome by O mRNA O tRNA O snRNA O rRNA O miRNA QUESTION 32 RNA polymerase synthesizes a molecule of RNA using DNA as a template During O mRNA splicing Otranslation O transcription O gene sequencing

During transcription of mRNA in eukaryotes some sequences are cut out of the primary transcript and the remaining sequences are joined together This processing of mRNA is called O termination Otranslation O splicing O capping O elongation QUESTION 28 To remove noncoding sequences in the pre mRNA of eukaryotes multiple snRNPS combine with proteins to form a larger complex called the O5 cap Ointrosome Oribosome O spliceosome 03 poly A tail 2

Xeroderma pigmentosum XP is a rare autosomal recessive disorder Patients with XP exhibit a cellular hypersensitivity to ultraviolet UV radiation a high incidence of skin cancer and premature aging Based on these clinical characteristics what is the most likely cause for this disease defects in DNA repair defects in DNA replication lack of telomerase activity shortened telomeres QUESTION 22 If a mutation produced helicase that was unable to hydrolyze ATP DNA replication would be stopped speeded up unaffected more prone to errors

During DNA replication which enzyme removes the RNA primers and then fills in the gap O DNA pol I O DNA primase O DNA pol III O DNA ligase QUESTION 20 I think the proactive stance is a better attitude to promote than after the fact worrying When planning a long week of sunbathing on the beach what type of DNA damage should sunbathers be aware of before hitting the beach O photolyase induced mutations O decreased telomere length O thymine dimers activation of uvr A B and C genes

If 14 of the nucleotides from a DNA molecule contain the base T what percent will contain the base G 14 18 28 36 O 72 QUESTION 12 If a short sequence of DNA is 5 AATTGCCGT 3 its complement is O 5 AAAACGCCA 3 3 TTAACGGCT 5 3 TTAACGGCA 5 3 TTAAGCCGA 5 O 5 TTAACGGCA 3

The site where the two original DNA strands separate and active replication occurs is called the O replication fork replisome primosome lagging strand sliding clamp subunit QUESTION 14 During replication which enzyme unwinds the DNA double helix O DNA primase O DNA polymerase I DNA helicase DNA gyrase O DNA ligase

Eukaryotic organisms speed up the process of DNA replication by O shortening the initiation phase O producing several sliding clamp complexes which provide more binding sites for DNA pol III O using DNA gyrase to unravel the double helix rather than DNA helicase O using multiple origins of replication on each chromosome QUESTION 16 Endonucleases and exonucleases are enzymes that can remove nucleotides from a polynucleotide chain An endonuclease removes nucleotides while an exonuclease removes nucleotides from the 5 end of the chain from the 3 end of the chain from the 3 end of the chain from the 5 end of the chain O internally from the ends of the chain O from the ends of the chain internally

The lagging strand is replicated with a series of Okazaki fragments and that is why its synthesis is considered to be O discontinuous continuous bidirectional antiparallel semiconservative QUESTION 10 Which of the following statements about DNA replication is false The two strands are separated Each existing strand is used as a template for making a new strand Synthesis of both new strands is in the 5 to 3 direction ther nucleus

QUESTION 5 Information obtained by Franklin from X ray crystallography on DNA suggested that it is shaped like a O helix O ribbon O hollow cylinder O pleated sheet O icosahedron QUESTION 6 In DNA complementary nitrogen bases are held together by bonds O hydrogen bonds O hydrophobic bonds O peptide bonds

The two strands of a DNA molecule contain nitrogen bases which are O identical O parallel complementary O proportionate O random QUESTION 8 Replication of DNA is conservative O redundant dispersive O semiconservative semidispersive

First Name Complete the table Distilled water control Non enzymatic detergent Enzymatic detergent Answer the following questions 1 Are enzymes globular or fibrous proteins Circle your answer globular 2 Provide an example of a globular protein 3 Provide an example of a fibrous protein 4 Are most proteins soluble or insoluble Circle your answer soluble fibrous Extent of Liquefaction mm insoluble 5 What are enzymes Answer is one sentence 6 What is the name of the enzymes often added to detergents

Part 1 Complete the following statements with one of the words listed below Notice that there are more words than necessary to fill up all the blanks Some words might be used more than once Proteins are the Proteins are biological molecules occurring in of amino acids Amino acids are molecules that contain two group and a group An cannot be diet At physiological respectively protonated and All amino acids have a central carbon called the amino group and the carboxyl group of amino acid are an amino amino acid indispensable amino acid is an amino acid that by the organism and therefore must be supplied in its different amino acids are commonly found in proteins For all the common amino acids except different groups to the carbon is bonded Because of the tetrahedral arrangement of the four groups around the carbon atom these four different groups can occupy two unique spatial arrangements and thus each amino acid has two possible The amino acid residues in protein molecules are exclusively Amino acids are divide in three classes based on the polarity of their R group and steroisomers

a protozoa b Protista c prokaryote d eukaryote e Gymnospermae f fungi g domain h Bacteria Open with Google Docs 1 Archaea j Eukarya Definition 1 kingdom of single celled eukaryote organisms such as protozoa 2 organism whose cells have nuclei 3 original name of the kingdom that included all bacteria 4 kingdom of eukaryote organisms such as mushrooms and molds 5 domain that was formerly the Archaebacteria kingdom 6 single celled organisms that can move on their own 7 domain that includes all four eukaryote kingdoms 8 is a vascular plant that produces seeds in special structures called cones

Protista prokaryote eukaryote Gymnospermae fungi domain Bacteria Archaea

A n bryophyte is a small seedless plant that lacks vascular tissue O O False True

A n eukaryote is a single celled organism that does not contain membrane bound organelles O O False True

Plants are examples of heterotrophs True O False

Phylum is the highest taxonomic level above kingdom O True False

A n dichotomous key is a diagram depicting the evolutionary relationships between different species or groups O True O False

A n genus is a taxonomic level consisting of a group of similar species O True False 1 poin

Species are defined based on their physical appearance and a set of physical characteristics called biodiversity O True O False

A scientist specializing in the study of plants is a n botanist True O False

The variety and number of life forms on Earth is called hybridization O True O False

Can you make two questions about patents

Can you make two questions about patents

What organism is shown in this figure Olichen mould mushroom O yeast green algae hyphae

Which term describes a round bacterial cell O pathogen O spirillum bacillus COCCUS

Which term describes an organism that cannot survive in the presence of oxygen obligate aerobe O obligate anaerobe O pathogen facultative aerobe 1F

Which statement is true about all members of Domain Eubacteria and Domain Archaea 1 point O They are multicellular organisms prokaryotes and contain membrane bound organelles They are multicellular organisms eukaryotes and lack membrane bound organelles O They are single celled organisms prokaryotes and contain membrane bound organelles They are single celled organisms prokaryotes and lack membrane bound organelles

Which term describes a small loop of DNA often found in prokaryotic cells that usually contains a small number of genes plasmid bacillus COCCUS capsule

Which statement s is are true about prokaryotes The total mass of prokaryotes exceeds that of animals and possible all plant life on Earth More than 100 trillion bacteria live on and within our bodies 1 point They live in a variety of environments including on the surface of other organisms in water and soil deep within Earth in boiling hot springs and in ice All of the above

Which animal is classified in the Arthropoda phylum pinworms earthworms snails insects

Which term describes a form of asexual reproduction that involves the division of one parent cell into two genetically identical daughter cells Otransformation conjugation binary fission fermentation

Which kingdom includes pine trees O Kingdom Plants O Kingdom Archaea O Kingdom Protista O Kingdom Eubacteria

Which term describes a corkscrew shaped bacterial cell O spirillum O pathogen O bacillus O COCCUS

Which characteristics are shared by sponges corals humans and frogs They are autotrophic and photosynthetic and are terrestrial They reproduce asexually and possess chloroplasts They are heterotrophic and have no cell walls or chloroplasts They possess chloroplasts and have cell walls composed of cellulose

What type of cell contains half the usual complement of chromosomes zygote O haploid O diploid all of the above

Which statement is true about the domains of living things Kingdom Bacteria and Kingdom Archaea are in the same domain Domain Eucaryotes includes only Kingdom Protista Domain Bacteria includes Kingdom Archaea and Kingdom Protista Four kingdoms are classified into the Domain Eukaryote

What is the highest taxonomic level O domain O family O phylum O genus

Which term describes a single celled organism that contains membrane bound organelles O autotroph O eukaryote heterotroph Oprokaryote

In Linnaeus s binomial naming system the second name is always what O the specific name O the genus name the clade name the kingdom name

Which of the following is an example of an autotroph tree O dog bird elephant

How does loss of biodiversity affect humans It threatens our food supply O It has a significant economic impact on tourism and forestry O It eliminates sources of natural medicines O all of the above

Which of the following gram positive bacteria low G C content is an important probiotic Lactobacillus Leuconostoc Streptococcus Staphylococcus Mycoplasma