Description : What is the function of histones in DNA packaging? -Biology
Last Answer : answer:
Description : What are histones? -Biology
Description : Why are histones positively charged? -Biology
Description : Which of the following are nucleo proteins? (A) Protamines (B) Histones (C) Deoxy and Ribo nucleo proteins (D) All of these
Last Answer : Answer : D
Description : Genetic information originates from (A) Cistron of DNA (B) Codons of mRNA (C) Anticodons of tRNA (D) Histones of nucleoproteins
Last Answer : Answer : A
Description : cis-acting elements include (A) Steroid hormones (B) Calcitriol (C) Histones (D) Silencers
Description : Nuclear DNA is present in combination with (A) Histones (B) Non-histones (C) Both (A) and (B) (D) None of these
Last Answer : Answer : C
Description : Histones are (A) Identical to protamine (B) Proteins rich in lysine and arginine (C) Proteins with high molecular weight (D) Insoluble in water and very dilute acids
Last Answer : Answer : B
Description : A single DNA molecule condensed into a compact structure in vivo by complexing with accessory histones or histone-like proteins.
Last Answer : Ans. Chromosome
Description : During the process of isolation of DNA, chilled ethanol is added to (a) precipitate DNA (b) break open the cell to release DNA (c) facilitate action of restriction enzymes (d) remove proteins such as histones.
Last Answer : a) precipitate DNA
Description : With regard to histones: a. they are basic proteins b. they are essential for the formation of stable DNA c. mitochondria do not contain histones d. all above
Last Answer : all above
Description : True statements about the nucleic acid include: a. contains purine and pyrimidine which are bound together by covalent bonds b. there is always an equal concentration of purine and pyrimidine c. in RNA, ... d. introns is more common than exons on the DNA e. the histones mark the excision site
Last Answer : there is always an equal concentration of purine and pyrimidine
Description : An octamer of 4 histones complexed with DNA forms (a) endosome (b) nucleosome (c) mesosome (d) centromere.
Last Answer : (b) nucleosome
Description : Genes are packaged into a bacterial chromosome by (a) acidic protein (b) actin (c) histones (d) basic protein.
Last Answer : basic protein
Description : In prokaryotes, the genetic material is (a) linear DNA without histones (b) circular DNA without histones (c) linear DNA with histones (d) circular DNA with histones.
Last Answer : circular DNA without histones
Description : Which one of the following statements about the particular entity is true ? (a) Centromere is found in animal cells, which produces aster during cell division. (b) The gene for producing insulin is ... cell. (c) Nucleosome is formed of nucleotides. (d) DNA consists of core of eight histones.
Last Answer : (b) The gene for producing insulin is present in every body cell.
Description : Genophore/bacterial genome or nucleoid is made of (a) histones and non-histones (b) RNA and histones (c) a single double stranded DNA (d) a single stranded DNA.
Last Answer : c) a single double stranded DNA
Description : Thermococcus, Methanococcus and Methano- bacterium exemplify (a) bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria (b) bacteria that ... that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled
Last Answer : (c) archaebacteria that contain protein homologous to eukaryotic core histones
Description : Which of the following is not true for prokaryotic organism? A.Nucleus is not bounded by nuclear membrane B.Chromosomes does not contain histones C.80S ribosomes are distributed in cytoplasm D.Cell wall contains peptidoglycan as one of the major component
Last Answer : C.80S ribosomes are distributed in cytoplasm
Description : Which of the following is not true for prokaryotic organism? A- Nucleus is not bounded by nuclear membrane B- Chromosomes does not contain histones C- 80S ribosomes are distributed in cytoplasm D- Cell wall contains peptidoglycan as one of the major component
Last Answer : 80S ribosomes are distributed in cytoplasm
Description : Which of the following is not true for eukaryotic cells? A- Nucleus is bounded by nuclear membrane B- Chromosomes contain histones C- Chloroplasts and mitochondria contains 70S ribosomes D- Gas vacuoles are present
Last Answer : Gas vacuoles are present
Description : What is not True for DNA in prokaryotes a) present in the form of a compact structure called nucleoid b) the coils are maintained by non-histone basic proteins c) found in cytoplasm in a supercoiled condition d) packaged as nucleosomes along with histones
Last Answer : b) the coils are maintained by non-histone basic proteins
Description : Which of the following is NOT a component of chromosomes? a) histones b) non-histone proteins c) DNA d) RNA
Last Answer : ANSWER: D -- RNA