chapter 10: molecular
Methionine; AUG
A tRNA with the anticodon UAC comes to the ribosome with the amino acid ______ and will match the codon _____. - : Methionine; AUG - Threonine ; ACA - Tryptophan; UGG - arginine; AGG
20
Living things have ___ amino acids that can build your proteins.
Promoter
A [a] can be found in front of a gene sequence. It will be the first signal to the RNA polymerase that a needed section is ahead.
Mutation
A ______________ is a permanent alteration of DNA.
RNA polymerase
During transcription, which enzyme unwinds DNA? - :Helicase - DNA polymerase - RNA polymerase - Ligase
- ATTCCGAT; TAAGGCTA - ACCGGTAC; TGGCCATG - GCGCTACA; CGCGATGT - TATAGCAC; ATATCGTG
Match the following DNA sequence with its complementary sequence: - ATTCCGAT - ACCGGTAC - GCGCTACA - TATAGCAC
- tRNA; Brings amino acids to the ribosome - rRNA; Make up the ribosome - mRNA; Brings the code of DNA out to the cytoplasm
Match the following RNA with its function. -tRNA -rRNA -mRNA
1. Helicase opens the DNA to from a replication fork. 2. Okazaki fragments are added to match the original. 3. DNA polymerase adds nucleotides. 4. DNA polymerase replaces okazaki fragments. 5. Ligase attaches both pieces of DNA
Place the following events of DNA replication in order for the lagging strands. - DNA polymerase adds nucleotides. - Ligase attaches both pieces of DNA - DNA polymerase replaces okazaki fragments. - Helicase opens the DNA to from a replication fork. - Okazaki fragments are added to match the original.
1. mRNA is held by the ribosome's small subunit 2. The start codon is found 3. 1st tRNA molecule arrives 4. 1st tRNA molecule binds to codon 5. Large subunit of the ribosome binds 6. 2nd tRNA molecule arrives 7. Amino acids 1 covalently binds to amino acid 2 8. tRNA 1 shifts into the "E" site 9. 1st tRNA exits 10. 3rd tRNA enters
Place the following steps of translation in order. - Large subunit of the ribosome binds - 1st tRNA molecule arrives - tRNA 1 shifts into the "E" site - 1st tRNA molecule binds to codon - 3rd tRNA enters - mRNA is held by the ribosome's small subunit - Amino acids 1 covalently binds to amino acid 2 - The start codon is found - 1st tRNA exits - 2nd tRNA molecule arrives
codon; amino acid
The _________ is the triplet of bases on mRNA that codes for an _________. - anticodon; amino acid - codon; nucleic acid - codon; amino acid - anticodon; nucleic acid
Helicase
The enzyme responsible for breaking the hydrogen bonds between the 2 strands of DNA is called: - helicase - DNA polymerase - lipase - RNA polymerase
both the amino acid and the anticodon
The tRNA carries which of the following? - codon - anticodon - amino acid - both the amino acid and the anticodon
two identical double-stranded DNA molecules
What are the products of the replication of one DNA molecule? - 2 single stranded DNA pieces - four identical double-stranded DNA molecules - two identical double-stranded DNA molecules - two strands joined into one double-stranded DNA molecule
When mutations occur in gametes of germ line cells, the condition is heritable. When they occur in body cells or somatic cells, the condition is not heritable
When mutations occur in gametes of [a], the condition is [b]. When they occur in body cells or [c], the condition is [d]
The two strands of DNA are held together by hydrogen bonds. Response Feedback: The DNA molecule is structured by 2 different bonds. Each strand built by covalent bonds. The 2 strands are held together by hydrogen bonds.
Which of the following is a true statement about bonds concerning DNA? - :The two strands of DNA are held together by hydrogen bonds. - The "outer rung" of the DNA strand is held together by ionic bonds. - The two strands of DNA are held together by covalent bonds. - The two strands of DNA are held together by ionic bonds.
exons; introns
__________ are the portions of RNA that directly code for the proteins. ______ are cut out and considered "junk." - introns; exons - introns; splicing - exons; introns - splicing; exons