Molecular Biology MCQs

Question

Which processes are parts of mRNA maturation?

Answer 1

3´ capping

Answer 2

formation of double-stranded regions

Answer 3

polyadenylation

Answer 4

a gene mutation

Answer 5

a structural chromosomal mutation

Answer 6

a numerical chromosomal mutation

Answer 7

a frameshift mutation

Answer 8

homologues separate and migrate towards opposite

Answer 9

sister chromatids separate and migrate towards opposite poles

Answer 10

nuclear membrane reforms

Answer 11

chromosomes line up in a single line

Answer 12

it is a protein complex

Answer 13

it is a nucleotide sequence

Answer 14

it is needed for initiation of replication

Answer 15

it is crucial for transcription initiation

Answer 16

RNA where replication starts

Answer 17

DNA where transcription starts

Answer 18

DNA where replication starts

Answer 19

RNA where translation startS

Answer 20

protein sequence where replication starts

Answer 21

DNA sequence where transcription starts

Answer 22

RNA sequence where replication starts

Answer 23

RNA sequence where translation starts

Answer 24

conservative

Answer 25

semiconservative

Answer 26

dispersive

Answer 27

continuous

Answer 28

a result of acute chronic damage

Answer 29

controlled genetically

Answer 30

characterized by inflammation

Answer 31

characterized by rupture of the plasma membrane

Answer 32

is DNA wrapped around a histone octamer

Answer 33

contains four types of histone proteins

Answer 34

is a complex of DNA and non-histone proteins;

Answer 35

contains five types of histone proteins

Answer 36

anaphase I

Answer 37

prophase I

Answer 38

mitosis and meiosis

Answer 39

it is interrupted process

Answer 40

meiosis II is accomplished after fertilization

Answer 41

starts during puberty

Answer 42

has 4 distinct stages

Answer 43

in the embryonic period

Answer 44

at puberty

Answer 45

in the last week of gestation

Answer 46

after fertilization

Answer 47

before fertilization

Answer 48

at ovulation

Answer 49

is an exchange of a coding codon with a STOP codon

Answer 50

is an exchange of a coding codon with a codon coding for another amino acid

Answer 51

a coding codon with a codon coding for the same aminoacid

Answer 52

changes the amino acid sequence of the protein

Answer 53

The amino acid to the nucleuS

Answer 54

the rRNA to the mRNA

Answer 55

the mRNA to the nucleus

Answer 56

the amino acid to the ribosome

Answer 57

mitochondria

Answer 58

cell membrane

Answer 59

translation

Answer 60

polyadenylation

Answer 61

transcription

Answer 62

separates the two DNA strands

Answer 63

elongates the newly synthesized strand

Answer 64

joins the Okazaki fragments

Answer 65

removes the supercoiling

Answer 66

shrinkage of the cell

Answer 67

DNA ladder

Answer 68

rupture of the cell membrane

Answer 69

genetic program

Answer 70

isoleucine

Answer 71

methionine

Answer 72

formylmethionine

Answer 73

phosphodiester bonds

Answer 74

disulfide bridges

Answer 75

covalent bonds

Answer 76

hydrogen bonds

Answer 77

the nucleolus breaks down

Answer 78

chromosomes are at the equator

Answer 79

the nuclear membrane reforms

Answer 80

chromosomes move to the opposite poles

Answer 81

adenine and guanine

Answer 82

adenine and cytosine

Answer 83

thymine and guanine

Answer 84

thymine and cytosine

Answer 85

adenine and thymine

Answer 86

thymine and guanine

Answer 87

adenine and guanine

Answer 88

thymine and cytosine

Answer 89

single-stranded

Answer 90

inherited paternally

Answer 91

270 amino acids

Answer 92

30 aminoacids

Answer 93

90 amino acids

Answer 94

60 amino acids

Answer 95

carries the amino acid to the ribosome

Answer 96

is synthesized in the cytoplasm

Answer 97

is the template for translation

Answer 98

contains rRNA genes

Answer 99

enables the entry of the sperm cell into oocyte

Answer 100

enables fusion of the male and female pronuclei

Answer 101

prevents polyspermy

Answer 102

completes meiosis II of the oocyte

Answer 103

enables the entry of the sperm cell into the oocyte

Answer 104

enables the fusion of the male and female pronuclei

Answer 105

prevents polyspermy

Answer 106

changes the membrane potential of the sperm cell membrane

Answer 107

anaphase I

Answer 108

prophase I

Answer 109

transcription

Answer 110

translation

Answer 111

replication

Answer 112

amino acid sequence of the protein

Answer 113

open reading frame of the gene

Answer 114

order of codons within the gene

Answer 115

position of the TATA box in the promoteR

Answer 116

Turner syndrome

Answer 117

Down syndrome

Answer 118

Kleinfelter syndrome

Answer 119

Edwards syndrome

Answer 120

Turner syndrome

Answer 121

Kleinfelter syndrome;

Answer 122

Down syndrome

Answer 123

Edwards syndrome

Answer 124

Turner syndrome

Answer 125

Kleinfelter syndrome

Answer 126

Down syndrome

Answer 127

Edwards syndrome

Answer 128

Down syndrome

Answer 129

Kleinfelter syndrome

Answer 130

Turner syndrome

Answer 131

Edwards syndrome

Answer 132

trisomy of the X chromosome

Answer 133

monosomy of the X chromosome

Answer 134

monosomy of the Y chromosome

Answer 135

trisomy of the Y chromosome

Answer 136

peptide bonds

Answer 137

disulfide bridges

Answer 138

hydrogen bonds

Answer 139

triphosphate bridges

Answer 140

The nucleolus breaks down

Answer 141

chromosomes are at the equator

Answer 142

the nuclear membrane reforms

Answer 143

chromosomes move to the opposite poles

Answer 144

metaphase I

Answer 145

telophase II

Answer 146

anaphase II

Answer 147

prometaphase I

Answer 148

nucleotide sequence

Answer 149

protein complex

Answer 150

transcription factor

Answer 151

phosphodiester bonds

Answer 152

disulfide bridges

Answer 153

covalent bonds

Answer 154

hydrogen bonds

Answer 155

transporting

Answer 156

regulatory

Answer 157

phosphodiester bonds

Answer 158

disulfide bridges

Answer 159

covalent bonds

Answer 160

hydrogen bonds

Answer 161

snRNA stability

Answer 162

formation of the spliceosome

Answer 163

termination of transcription

Answer 164

mRNA transport into the cytoplasm

Answer 165

centromeres

Answer 166

metaphase I

Answer 167

telophase II

Answer 168

anaphase II;

Answer 169

prometaphase I

Answer 170

structural chromosomal mutation

Answer 171

gene mutation

Answer 172

point mutation

Answer 173

separation of metacentric chromosomes.

Answer 174

activators

Answer 175

the 5’ end of DNA during replication

Answer 176

the 3’ end of rRNA during transcription

Answer 177

the 5’ end of mRNA during transcription

Answer 178

the 3’ end of mRNA during transcription

Answer 179

transcription factors

Answer 180

endonucleases

Answer 181

spermatogenesis

Answer 182

fertilization

Answer 183

is monocistronic

Answer 184

contains introns;

Answer 185

has a 5’ cap

Answer 186

has more than one cistron

Answer 187

contains functional genes

Answer 188

is decondensed

Answer 189

replicates late in the S phase

Answer 190

is lightly stained

Answer 191

is darkly stained

Answer 192

is replicated late in the S phase

Answer 193

contains functional genes

Answer 194

is highly condensed

Answer 195

causes inflammation

Answer 196

is under genetic control

Answer 197

is caused by rupture of the cell membrane

Answer 198

causes enlargement of the cell

Answer 199

topoisomerases

Answer 200

polymerases

Answer 201

coding region of a gene

Answer 202

non-coding region of a gene

Answer 203

2 nucleotides that code for one amino acid

Answer 204

3 nucleotides that code for one amino acid

Answer 205

coding region of a gene

Answer 206

non-coding region of a gene

Answer 207

2 nucleotides that code for one amino acid

Answer 208

3 nucleotides that code for one amino acid

Answer 209

is an interrupted process

Answer 210

begins at birth

Answer 211

has 4 distinct stages

Answer 212

is very inefficient

Answer 213

change in the amino acid sequence

Answer 214

truncated protein

Answer 215

shift of the open reading frame

Answer 216

different codon order

Answer 217

Shine-Dalgarno sequence

Answer 218

Kozak sequence

Answer 219

Pribnow box

Answer 220

Southern blot

Answer 221

Northern blot

Answer 222

RNA polymerase

Answer 223

RNA primase

Answer 224

telomerase

Answer 225

an organelle at the tip of the sperm cell

Answer 226

the site where the flagellum of the sperm cell begins

Answer 227

an organelle in the perivitelline space of the oocyte

Answer 228

the vitelline envelope of the sperm cell

Answer 229

fatty acids

Answer 230

amino acids

Answer 231

disaccharides

Answer 232

polysaccharides

Answer 233

after fertilization

Answer 234

before fertilization

Answer 235

at ovulation

Answer 236

Contains H2A, H2B, H3, H4 histone molecules;

Answer 237

contains 2 types of histone molecules

Answer 238

is DNA wrapped around a non-histone octamer

Answer 239

contains 6 types of histone molecules

Answer 240

DNA and proteins

Answer 241

mRNA and tRNA

Answer 242

rRNA and polysaccharides

Answer 243

rRNA and proteins

Answer 244

DNA replication

Answer 245

DNA cloning

Answer 246

RNA replication

Answer 247

RNA restriction

Answer 248

mammalian cells

Answer 249

bacterial cells

Answer 250

sperm cells

Answer 251

an octamer of histones and 246 bp of DNA

Answer 252

an octamer of histones and 146 bp of DNA

Answer 253

a hexamer of histones and 146 bp of DNA

Answer 254

a hexamer of histones and 146 bp of RNA

Answer 255

transcription

Answer 256

translation

Answer 257

replication

Answer 258

RNA primase

Answer 259

RNA polymerase

Answer 260

DNA-polymerase

Answer 261

transferase

Answer 262

topoisomerase

Answer 263

5’ ATCCGGATT 3’

Answer 264

5’ TTAGGCCTA 3’

Answer 265

5’ AUCCGGAUU 3’

Answer 266

5’ UUAGGCCUA 3’

Answer 267

removes supercoiling of DNA

Answer 268

separates the two DNA strands

Answer 269

destroys the nuclear envelope

Answer 270

forms the peptide bond

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Molecular Biology MCQs

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