Quiz #8

The 3-nucleotide sequence of an mRNA is called the

codon

The process in which an mRNA molecule is assembled whose nucleotide sequence is complementary to the DNA sequence is called

transcription

Gene expression includes which two of the following processes?

transcription and translation

The manufacture of new proteins is termed ________, and the production of a messenger RNA corresponding to a specific gene is called ________.

translation; transcription

If the somatic cells of an animal have 10 chromosomes, how many chromosomes and/ or chromatids will be aligned at the metaphase plate during mitosis?

10 chromosomes and 20 chromatids

You are studying meiosis in an organism that has 28 chromosomes as it's diploid number. How many chromosomes and/or chromatids will each nucleus have after meiosis I?

12 chromosomes and 28 chromatids

Out of the 100%, thymine makes up 28% of the nucleotides in a sample of DNA from an organism. Based on chargaffs rules, approximately what percentage of the nucleotides in this sample will be guanine?

22%

Consider the following sequence: 5'AUG GCU ACA GAU AGC UGG GGC UGA AAA AAA Translated, the corresponding protein contains how many amino acids?

7

Chargaff's rules for the pairing of nitrogen bases is

A pairs with T and G pairs with C

A cell divides to produce two diploid daughter cells that are genetically the same (clones).

A. The statement is true for mitosis only.

The different components of the protein synthesizing machinery include all of the following except

DNA polymerase

The enzyme that catalyzes the synthesis of new dna molecules is called

DNA polymerase

The central dogma of biology is stated as

DNA→ RNA→ proteins.

homologous chromosomes move toward opposite poles of a diving cell during

Meiosis I

Meiosis and mitosis are both processes that involve nuclear division. What is the difference between the two?

Mitosis is nuclear division, which ultimately leads to diploid somatic cells. Meiosis is nuclear division, which ultimately leads to haploid gametes.

Chose a pair of terms that correctly completes this sentence: nucleotides are to ________ as _________ are to proteins

Nucleic acids; amino acids

Synthesis of the lagging strand during DNA replication

Occurs discontinuously and requires a 5'-3'

The method of DNA replication, where each original strand or parent strand is used as a template to build a new strand, is called the

Semiconservative method

If one strand of a DNA molecule has the sequence of ATTGCAT', the other complementary strand would have the sequence

TAACGTA

Which of the following statements about replication of DNA is false?

The newly synthesized DNA is packaged into one nucleus, and the old DNA is packaged into another nucleus.

If the sequence of bases in a section of DNA is ATCGCTCC, what is the corresponding sequence of bases in mRNA?

UAGCGAGG

Similar to the complementary purine-pyrimidine relationship observed in DNA, which of the following choices pairs with adenine in RNA?

Uracil

Which of the following descriptions best fits the class of molecules known as nucleotides? They contain

a nitrogenous base, a phosphate group, and a five-carbon sugar

DNA consists of two antiparallel strands of nucleotide chains held together by

hydrogen bonds

What amino acid sequence will be generated based on the following mRNA codon sequence 5'AUG UCU UCG UUA UCC UUG UGA3'

met-ser-ser-leu-ser-leu