Question 1

DNA molecules contain protein coding sequences called _____.

Accepted Answer

A) genotypes 
B) genomes 
C) nucleotides 
D) genes 
E) ribonucleic acids 
A) genotypes 
B) genomes 
C) nucleotides 
D) genes 
E) ribonucleic acids

Question 2

Heritable changes in gene expression not due to changes in DNA sequences are known as _____.

Accepted Answer

A) epigenetics 
B) methylation 
C) translational mutation 
D) differentiation 
E) frameshift inheritance 
A) epigenetics 
B) methylation 
C) translational mutation 
D) differentiation 
E) frameshift inheritance

Question 3

Match between columns
                        Premises: If UUA codes for leucine (leu), UUU codes for phenylalanine (phe), AUU codes for isoleucine (iso), AAA codes for asparagine (asn)and UAA codes for a stop codon, which type of mutation would be responsible for changing the protein sequence from leu-phe-iso-iso-stop to leu-phe-leu-phe-asn-stop

Accepted Answer

The Answer of Frame-shift mutation and Insertion only and Base-pair is...

Question 4

The type of RNA that carries protein-building information is called _____.

Accepted Answer

A) ribosomal RNA 
B) transfer RNA 
C) messenger RNA 
D) reader RNA 
E) translator RNA 
A) ribosomal RNA 
B) transfer RNA 
C) messenger RNA 
D) reader RNA 
E) translator RNA

Question 5

If the codon consisted of only 2 nucleotides, _____ codons would be possible.

Accepted Answer

A) 4 
B) 8 
C) 16 
D) 32 
E) 64 
A) 4 
B) 8 
C) 16 
D) 32 
E) 64

Question 6

In most species, all mRNA transcripts begin with _____.

Accepted Answer

A) methionine 
B) a ribosome 
C) AUG 
D) the P site 
E) an anticodon 
A) methionine 
B) a ribosome 
C) AUG 
D) the P site 
E) an anticodon

Question 7

Amino acids are carried to ribosomes by____ RNA.

Accepted Answer

A) template 
B) messenger 
C) transfer 
D) ribosomal 
E) retriever 
A) template 
B) messenger 
C) transfer 
D) ribosomal 
E) retriever

Question 8

Which types of cells are most likely to have high levels of methyl groups in their DNA?

Accepted Answer

A) embryonic cells 
B) blastocyst cells 
C) senescent cells (cells that are not actively dividing) 
D) apoptotic cells (cells that are undergoing cell death) 
E) rapidly dividing cells 
A) embryonic cells 
B) blastocyst cells 
C) senescent cells (cells that are not actively dividing) 
D) apoptotic cells (cells that are undergoing cell death) 
E) rapidly dividing cells

Question 9

Match between columns
                        Premises: What type of mutation is least likely to alter the amino acid sequence?

Accepted Answer

The Answer of Insertion only and Frame-shift mutation and Base-pair is...

Question 10

Proteins that regulate gene expression by directly binding to the DNA are known as _____.

Accepted Answer

A) transcription factors 
B) translation factors 
C) transposable elements 
D) methylation 
E) phosphorylation 
A) transcription factors 
B) translation factors 
C) transposable elements 
D) methylation 
E) phosphorylation

Question 11

Match between columns
                        Premises: all of the mRNA codons

Accepted Answer

The Answer of ribosome and promoters and transcription and translation is...

Question 12

Which molecule initiates translation after an egg is fertilized?

Accepted Answer

A) maternal mRNA 
B) paternal promoters in sperm 
C) maternal transcription factors 
D) transposable elements 
E) paternal DNA 
A) maternal mRNA 
B) paternal promoters in sperm 
C) maternal transcription factors 
D) transposable elements 
E) paternal DNA

Question 13

In a sickled red blood cell, what do the hemoglobin molecules do?

Accepted Answer

A) repel each other 
B) stick together 
C) fracture and release their contents into the cytoplasm 
D) create holes in the cell membrane 
E) hold less tightly onto oxygen molecules 
A) repel each other 
B) stick together 
C) fracture and release their contents into the cytoplasm 
D) create holes in the cell membrane 
E) hold less tightly onto oxygen molecules

Question 14

For eukaryotes, translation takes place in the _____.

Accepted Answer

A) nucleus 
B) nucleolus 
C) cytoplasm 
D) plasma membrane 
E) nucleus and cytoplasm 
A) nucleus 
B) nucleolus 
C) cytoplasm 
D) plasma membrane 
E) nucleus and cytoplasm

Question 15

Match between columns
                        Premises: occurs when stop codons are read

Accepted Answer

The Answer of codon and anticodon and transcription and ribosome is...

Question 16

Referring to the image above, w hat is the most likely sequence of DNA that codes for the amino acid sequence is asn-tyr-phe-ser-pro?

Accepted Answer

A) AACTATAAATCACCA 
B) GGGCCATGTAAACTA 
C) CUUAUAAAAAGUUGA 
D) TTGATAAAAAGTGGT 
E) TTGATCGGAAGTTGA 
A) AACTATAAATCACCA 
B) GGGCCATGTAAACTA 
C) CUUAUAAAAAGUUGA 
D) TTGATAAAAAGTGGT 
E) TTGATCGGAAGTTGA

Question 17

The first amino acid in a growing polypeptide chain is  _____.

Accepted Answer

A) methionine 
B) valine 
C) lysine 
D) phenylalanine 
E) glycine 
A) methionine 
B) valine 
C) lysine 
D) phenylalanine 
E) glycine

Question 18

Ribosome inactivating proteins (RIPs)inhibit protein synthesis by preventing _____.

Accepted Answer

A) mRNA from binding to the ribosome 
B) tRNA from binding to the ribosome 
C) the two halves of the ribosome from coming together 
D) the ribosome from moving forward from one codon to the next 
E) the newly synthesized amino acid chain from being released from the ribosome 
A) mRNA from binding to the ribosome 
B) tRNA from binding to the ribosome 
C) the two halves of the ribosome from coming together 
D) the ribosome from moving forward from one codon to the next 
E) the newly synthesized amino acid chain from being released from the ribosome

Question 19

How many nucleotides comprise one codon?

Accepted Answer

A) 2 
B) ​3 
C) ​5 
D) ​6 
E) ​16 
A) 2 
B) ​3 
C) ​5 
D) ​6 
E) ​16

Question 20

How many codons specify the amino acid leucine?

Accepted Answer

A) ​2 
B) ​3 
C) ​4 
D) ​5 
E) ​6 
A) ​2 
B) ​3 
C) ​4 
D) ​5 
E) ​6

Exam 7: Gene Expression and Control

DNA molecules contain protein coding sequences called _____.

Heritable changes in gene expression not due to changes in DNA sequences are known as _____.

The type of RNA that carries protein-building information is called _____.

If the codon consisted of only 2 nucleotides, _____ codons would be possible.

In most species, all mRNA transcripts begin with _____.

Amino acids are carried to ribosomes by____ RNA.

Which types of cells are most likely to have high levels of methyl groups in their DNA?

Proteins that regulate gene expression by directly binding to the DNA are known as _____.

Which molecule initiates translation after an egg is fertilized?

In a sickled red blood cell, what do the hemoglobin molecules do?

For eukaryotes, translation takes place in the _____.

Referring to the image above, w hat is the most likely sequence of DNA that codes for the amino acid sequence is asn-tyr-phe-ser-pro?

The first amino acid in a growing polypeptide chain is _____.

Ribosome inactivating proteins (RIPs)inhibit protein synthesis by preventing _____.

How many nucleotides comprise one codon?

How many codons specify the amino acid leucine?

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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