DNA structure
what are different strands of DNA held together by
hydrogen bonds
DNA polymerase
what organelle produces proteins?
ribosomes
how many nucleotides are in a codon
3 letters/nucleotides
what nucleotide base pairs with thymine
adenine
what is 1 helix of DNA also called
a strand of DNA
how many rounds of DNA replication are involved in meiosis
1 (2 rounds of cell division)
what are the names of the 2 groups that are common to all amino acids
amino and carbonyl groups
what is the complementary mRNA strand made from the following DNA template?:
3' AATGCGT 5'
5' UUACGCA 3'
true of false-it is possible to have pieces of DNA that are not chromosomes
true
what is the word for directionality for DNA
antiparallel
what macromolecule makes up the molecules that facilitate DNA replication
proteins
what provides the work for proteins to fucntion
ATP (the third phosphate is removed)
what is the name for characters that are coded for by multiple genes
polygenic
true or false-chromosomes are what contain DNA
false- chromosomes are made of DNA
what nucleotides are purines
adenine and guanine
what is the complementary DNA molecule made from the following template strand?:
3' TTAGCGA 5'
5' AATCGCT 3'
what molecule directly provides the information for protein production in ribosomes?
mRNA
term for segments of DNA that code for specific traits
genes
what are the three parts of a nucleotide?
phosphate, sugar, nitrogenous base
what bonds hold together nucleotides in 1 DNA strand
phosphodiester bonds (covalent)
word for a pair of duplicate chromosomes made when DNA duplicates?
sister chromatids
what level of protein structure is made from peptide bonds
primary structure
term for the specific option or trait of a gene
allele
what is the process by which homologous chromosomes exchange segments of DNA in prophase 1?
crossing over