Which of the following histones shows more sequence similarity among eukaryotic species? a) H2A b) H3 c) H1 d) H2B
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- Which of the following histones shows more sequence similarity among eukaryotic species?a) H1b) H2Ac) H2Bd) H3Identify the single most correct answer: a) Ribosome is an organelle found in both prokaryotes and eukaryotes. Ob) During conjugation a naked DNA molecule found in the surroundings gets into bacteria. c) Spontaneous mutation cannot result in the production of an altered protein. Od) Gene transfer from one species of bacteria to another (donor to recipient) represents horizontal gene transfer.asap please A partially filled diagram of eukaryotic gene structure is shown below. Label the following additional elements in the empty boxes. One label must be used twice: a) 3'UTR, b) 5'UTR, c) exon, d) intron, e) promoter
- Which of the following is/are evidence that mitochondria and bacteria are descendants of bacteria? (Select all that apply.) a) The DNA structure of mitochondria and chloroplasts is similar to that of bacteria b) The DNA sequence of mitochondria and chloroplasts is similar to that of bacteria c) Mitochondria and chloroplasts have their own genomes that are not enclosed in a nuclear envelope. d) MItochondria and chloroplasts have their own ribosomes.For eukaryote cells to evolve into new types of eukaryotic organism, which of the following would one expect to occur? a) All the cells are identical b) The endoplasmic reticulum is not involved. c) These specialized cells activate only the genes in their nucleoid area. d) Cells must be getting new genetic mutations and more DNA e) none of these are true.An anticodon is 5' CGA 3'. The codon that pairs with the anticodon will be C a) 3'UGC5' b) 5'GCT3' c) 5' UCG3' d) 5'TCG31 Listen An anticodon is 5'CGA3'. This amino acid will be put into the protein when the RNA molecule with this anticodon is used. Use the codon table below UUU UUC UUA CUU CUC CUA CUG AUU AUC AUA AUG } GUU GUC GUA GUG a) LEU b) ARG ▶ c) SER d) ALA Phe Leu Leu lle Met Val UCU UCC UCA UCG CCU CCC CCA CCG ACU ACC ACA ACG GCU GCC GCA GCG Ser Pro Thr Ala UAU UAC UAA UAG CAU CAC CAA CAG AAU AAC AAA AAG ;} Tyr Stop His Gln Asn Lys UGU UGC Cys UGA Stop UGG Trp CGU CGC CGA CGG AGU AGC AGA AGG GAU GGU GAC Asp GGC GAA GGA GAG} Glu GGG Arg Ser Arg Gly
- Which of the following, if any, cannot be genetically encoded in DNA? a)mRNA b)tRNA c)rRNA (RNA part of the ribosome) d)RNA parts of the spliceosomeChloramphenicol blocks the peptidyl transferase reaction on ribosomes. The specific effect of this compound would be to ... A) inhibit transcription B) prevent peptide bond formation C) block the translocation steps in translation D) prevent entry of aminoacyl TRNAS into the A site E) prevent recognition of the promoter sequences by sigma factorAn anticodon will be found on a) rRNA b) tRNA c) mRNA d) SRNA Listen ▶ Because of alternate splicing an organism can have a) More proteins than genes b) More genes than proteins c) More exons than introns d) More introns than genes Listen ▶ If a single nucleotide is added to the middle of an exon then a) Only one amino will be changed b) A missense mutation will result c) The RNA will not be spliced properly d) Many amino acids will be changed
- transcription in eukaryotes; a) Occurs simultaneously with translation. Ob) Does not require the RNA polymerase to bind to the promotor Oc) Requires transcription factors d) Occurs in the cytoplasm1. Two closely related species may have a very similar genome size but very different number of a)nucleosomes B)mitochondrial chromosomes C)nucleoli D)chromosomes 2. What is required for RNA polymerase to be able to dissociate from transcription factors and start transcribing the DNA? A)acetylation of histones B)methylation of the DNA that will be transcribed C)phosphorylation of the RNA polymerase tail D)phosphorylation of transcription factorsThe biological process shown in Figure 1 occurs in a eukaryotic cell’s nucleus. a) What is the DNA base sequence of Codon 1? b) What is the anticodon sequence for Codon 1? c) Name the enzyme involved in the production of Y.