Biology Test 3 Flashcards Quizlet PDF

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Summary

Write succinctly, with a simple sentence structure. Minimise the use of adjectives.
results, eb x vg is autosomal; therefore, state the results indicate this. Therefore, you do not need to separate the results of each reciprocal cross – just state the totals.
Discussion – do not repeat ...

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Biology Test 3 Terms in this set (112)

A cell biologist found

Exons from the same gene could be spliced in

that two different

different ways to make different mRNAs.

proteins with different structures were translated from two different mRNAs. These mRNAs, however, were transcribed from the same gene in the cell nucleus. Which mechanism below could best account for this?

Different systems of DNA unpacking could result in two different mRNAs. The two proteins have different functions in the cell. The gene could be transcribed in different directions to produce two different proteins. A mutation might have altered the gene. Exons from the same gene could be spliced in different ways to make different mRNAs.

The number of

3 ... codon

nucleotide bases on the mRNA that together designate an amino acid is _____; this unit is called a(n) _____. 2 ... anticodon 2 ... dipeptide 3 ... codon 3 ... triose 1 ... amino acid

Translation converts the information stored in ______ to ______. DNA . . . RNA RNA . . . a polypeptide protein . . . DNA DNA . . . a polypeptide RNA . . . DNA

RNA . . . a polypeptide

What is the correct

initiation, codon recognition, peptide bond

order of the stages of

formation, translocation, termination

translation? initiation, codon recognition, peptide bond formation, translocation, termination initiation, translocation, codon recognition, peptide bond formation, termination initiation, codon recognition, translocation, peptide bond formation, termination initiation, peptide bond formation, codon recognition, translocation, termination initiation, peptide bond formation, translocation, codon recognition, termination

What is the proper

3, 2, 1

order of the following events in the expression of a eukaryotic gene? 1.translation 2.RNA processing 3.transcription 3, 2, 1 2, 3, 1 1, 2, 3

What protects mRNA from attack by cytoplasmic enzymes? the excision of introns RNA splicing the excision of exons the lack of RNAdigesting enzymes in the cytoplasm a cap and tail

a cap and tail

Where is translation

ribosomes

accomplished? lysosomes sER peroxisomes ribosomes nucleoli

Which of the following enzymes is responsible for RNA synthesis? RNase RNA gyrase RNA helicase RNA ligase RNA polymerase

RNA polymerase

Which of the following

translation

processes occurs in the cytoplasm of a eukaryotic cell? DNA replication translation transcription translation and transcription DNA replication and translation

Which one of the following choices is true of tRNA? Each tRNA binds a specific amino acid. tRNAs carry special sequences known as codons. tRNAs are extremely small molecules. There are four types of tRNA. All of the above statements are true.

Each tRNA binds a specific amino acid.

A major characteristic of

the ratio of A to T is close to 1:1 and the ratio of G to

the structure of DNA is

C is close to 1:1

that _____. the ratio of A to T is close to 1:1 and the ratio of G to C is close to 1:1 A+T= G + C the ratio of A to G is close to 1:1 and the ratio of T to C is close to 1:1 A+ G =C +G the ratio of A to C is close to 1:1 and the ratio of G to T is close to 1:1

After replication, ______.

each new DNA double helix consists of one old strand and one new strand

each new DNA double helix consists of two old strands each new DNA double helix consists of one old strand and one new strand each new DNA double helix contains 25% of the old DNA double helix each new DNA double helix consists of two new strands one new DNA double helix consists of two old strands and the other new DNA double helix consists of two new strands

DNA and RNA are

nucleotide

polymers composed of ______ monomers. nucleotide carbohydrate fatty acid nucleic acid amino acid

DNA and RNA are polymers of ______. fatty acids nucleotides monoglycerides amino acids monosaccharides

nucleotides

DNA replication _____.

provides exact copies of chromosomes for the progeny of cell division and assures perpetuation of

is spontaneous and not governed by internal factors provides proof of the one gene-one enzyme hypothesis provides the template for transcription (synthesis of mRNA) only occurs when the cell is depleted of nutrients provides exact copies of chromosomes for the progeny of cell division and assures perpetuation of the species

the species...