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q what is the plasma membrane of the cell what are its major functionsthe plasma membrane is the external membrane of the cell it delimits the cell
q are there any bacteria made of more than one cellthere are no pluricellular bacteria all bacteria are unicellular
q do bacteria cells have a nucleusin bacteria the genetic material is dispersed in the cytosol and there is no inner membrane that delimits a
q what are the two big groups into which cells are classifiedcells can be classified as prokaryotic or eukaryotic prokaryotic cell is that with no
q in 1665 robert hooke an english scientist published his book micrographia in which he explained that pieces of cork viewed under the microscope
q are there living beings without cellsviruses are considered the only living beings that do not have cells viruses are constituted by genetic
q what is the cell theorycell theory asserts that the cell is the element unit of living beingsbefore the discovery of the cell it was not
q do the phosphate and the pentose groups give heterogeneity or homogeneity to the nucleic acid chains what about the nitrogen- containing groups
q is there any situation in which the dna is made based on the rna template what is the enzyme involvedthe process in which the dna is synthesized
q concerning their biological function what is the difference between dna and rnadna is the source of information for rna production transcription
q what are the three major types of rna what is meant by heterogeneous rnamessenger rna or mrna transfer rna or trna and ribosomal rna or rrna are
q what are the differences and similarities between the transcription process and the replication processes a dna polynucleotide chain serves up as a
q what is the production of the rna called and what is the enzyme that catalyzes the procedurethe making of the rna from information contained in the
q does rna molecule have two polynucleotide chains like the dnaonly dna has two polynucleotide chains the rna is formed by just one polynucleotide
q where can rna are found within cellsin the eukaryote cell nucleus the rna can be found to dispersed in the nuclear fluid along with the dna and as
q mistakes may happen during each copying process the same is true for the dna replication are there correction systems in cells that try to mend
q one characteristic of the dna molecule is its replication capability what are the consequences of failures during the dna replication ideally the
q does the dna replication occur in the cell divisionyes the dna replication occurs in mitosis as well in the
q as a result of the dna replication two dna molecules come into existence why is it not correct to assert that the two new dna molecules are created
q what are the chemical bonds of the dna molecule that are broken for replication process to occurduring the dna replication process hydrogen bonds
q how execute the two complementary nucleotide chains of the dna facilitate the replication process of the moleculethe fact that dna molecule is made
q why is it not correct to assert that the dna self- replicatesthe dna is not completely self-sufficient in its duplication process because the
q what is the name of the dna duplication procedure what is the major enzyme that participates in itthe process of duplication or copying of the dna
q which kind of chemical bond maintains the pairing of each chain in the dna moleculeto form the dna molecule purine bases bind to pyrimidine bases
q what is the numeric relation between purine and pyrimidine bases in the dna molecule is that relation valid in the rna moleculesthe dna molecule is