Which of the following has beads on a string structure? a) Nucleosomes b) Chromosomes c) Heterochromatin d) Chromatin
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- Which of the following is not true for chromatin?a) Organized structure of DNA and proteinb) These are highly condensed DNAc) It is found in the nucleusd) It contains a single dsDNA1. Which one explains the form of genetic material before nuclear division? a) Euchromatin b) Heterochromatin c) Chromatin d) ChromosomesWhich term among A-D is not correctly matched with its definition? A) O Slime layer: loose assemblage of polysaccharide material external to the cell envelope B) O Polysome or polyribosome formation: multiple ribosomes binding to a messenger RNA transcript C) O Replisome: two of these complexes working in opposite directions are needed to copy the bacterial chromosome D) O Nucleoid: cytoplasmic area containing the bacterial chromosome E) OA-D are all correctly matched
- The nucleus a) has a single membrane and compartmentalizes the genetic material b) has a double membrane joined by nuclear pores, is continuous with the endoplasmic reticulum membrane, and compartmentalizes the nuclear genetic material c) has a double membrane joined by nuclear pores, is continuous with the smooth endoplasmic reticulum membrane only, and compartmentalizes the nuclear genetic material d) None of these are accurateIn eukaryotes, the nucleus is enclosed by a double membrane called the _____. A) cell membrane B) nuclear envelope C) nucleolus D) nucleoplasm E) nucleosomeWhich of the following is not a major class of chromatin proteins?a) Histonesb) Topoisomerasesc) SMC proteinsd) Cohesins
- 1) What is the size of the following single-stranded piece of DNA? ATCGTGTGCT A) 10 b B) 20 bp C) 20 b 2) Mitosis is to cytokinesis as Meiosis is to: A) Cell plate B) Interkinesis C) Metaphase-1 3) During cell division, DNA synthesis and replication does not take place at the beginning of: A) Mitosis B) Meiosis-II 4) What is the size of the following single-stranded piece of RNA? AUCGUGUGCU A) 10 bp B) 10 b| C) 20 bpWhich of these is not a macromolecule? a) Ala b) protein c) polysaccharide d) nucleic acid The site of translation is the a) nucleus b) ribosomes c) lysosomes d) mitochondria Which of these pairs of molecules dissolved in water not produce a buffer solution? a) HF and NaF b) NH3 and NH4Cl c) CH4 and H2O d) NaH2PO4 and Na2HPO4 The soap-water-oil mixture that you made in your amphipathic home lab exercise may be best described as: a) an amphipathic substance b) a hydrophilic substance c) a hydrophobic substance d) an emulsion Which of these amino acids would have a negative charge at pH 7.0? a) Lys b) Asp c) Met d) Gly Which of these amino acids has two nitrogen atoms in its structure? a) Lys b) Arg c) Tyr d) Val Beta sheets are an example of: a) primary structure b) secondary structure c) tertiary structure d) quaternary structure Folding in myoglobin are an example of: a) primary structure b) secondary structure c) tertiary…Which statement is false? a) Mitochondria carry DNA in the form of a closed circle. b) Chloroplasts carry DNA in the form of a closed circle. c) A nucleus can possess DNA in the form of a linear chromosome. d) The nucleoid region carries DNA in the form of a closed circle. e) None of the above statements is false.
- The process by which messenger RNA codes for the synthesis of a specific protein is called: a) replication b) transcription c) translation d) gene regulation Which statement is true about prokaryotes? A) they have no chromosomes b) they have chromosomes, but they are not membrane bound c) they have membrane bound chromosomes d) their chromosomes are made of RNA rather than DNA In a eukaryotic cell, most ATP is made in which location? A) nucleus b) mitochondria C) cytoplasm d) golgi apparatusWhich of the following is found in binary fission but not in mitosis? a) duplicated chromosomes attach to the plasma membrane b) replicated strands of DNA seperate c) the result produces 2 nuclei d) following the process, a membrane seperates the 2 copies e) replication of DNA begins at an originWhich of the following involves remarkable capacity of short segment of DNA to move from one place to another?a) DNA transpositionb) DNA replicationc) Translationd) Transcription