10th grade science dna rna Actual Questions And Correct Detailed Answers| Graded A+.

nucleotide - correct answer the building block of DNA and RNA. made of 3 parts structure of a nucleotide - correct answer phosphate, sugar, and nitrogen base. they are all held together by covalent bonds what does DNA replication make - correct answer a new strand of DNA when does DNA replication occur - correct answer it happens when new cells are created. growing, healing, new hair and skin cells. where does DNA replication take place - correct answer it happens in the nucleus. why does DNA replication happen - correct answer the process produces and exact copy of DNA without making any mistakes. steps for DNA replication - correct answer helicase uncoils and unzips the double helix by breaking the H bonds between the N bonds. a replication fork or bubble forms exposing "loose or unpaired" bases. DNA polymerase brings in free floating nucleotides inside the nucleus and it attaches them to the corresponding bases. DNA polymerase proofreads the DNA to check for mistakes and corrects it. each new DNA strand coils up inside the nucleus. the enzymes in DNA replication - correct answer helicase, DNA polymerase RNA - correct answer Ribonucleic acid. it is the working instructions of a gene how DNA relates to RNA - correct answer dna transmits genetic info and rna are the working instructions of a gene how DNA is different from RNA - correct answer DNA is the "blueprint" and RNA are the instructions of the gene. mRNA - correct answer messenger rna. carries info fron DNA to the ribosome tRNA - correct answer transfer RNA. carries amino acids to the ribosome. rRNA - correct answer ribosomal RNA. makes the ribosome. codon - correct answer a 3 letter sequence on mRNA transcription - correct answer in the nucleus, anytime the body is making protein, it makes mRNA by copying DNA steps of transcription - correct answer RNA polymerase binds to the start signal of a gene (promoter) and unwinds and unzips the DNA for that gene. RNA polymerase pairs the exposed DNA bases within nucleotides of RNA. RNA does not have to be DNA. RNA polymerase stops at the terminator (stop signal). and detaches from DNA. DNA closes up and recoils; RNA leaves nucleus. translation - correct answer it occurs in the ribosomes. it happens every time a protein is being made and after transcription . it makes a protein (amino acid chain) from the instructions in mRNA how transcription and translation work together - correct answer transcription copies the protein and translation makes the new protein. frederick griffith - correct answer his ideas/discoveries: heat-killed, disease-causing bacteria can "transform" harmless bacteria into harmful ones oswald avery - correct answer he discovered that genes are composed of DNA Hershey and Chase - correct answer discovered that the genetic material of the bacteriophage was DNA, not protein erwin chargoff - correct answer he discovered that the percentage of guanine and cytosine are almost equal in any DNA. same w/ thymine and adenine. A=T C=G watson and crick - correct answer they developed the double helix model of DNA rosalind franklin - correct answer she studied DNA with an xray diffraction. she got cancer because of it. tried to take a picture of DNA. she looked