1) The nitrogenous base Adenine can pair with a) Guanine b) Thymine c) Cytosine d) Uracil e) Thymine and uracil f) Thymine and Guanine 2) A nucleotide in DNA is composed of a) only a deoxyribose sugar and a nitrogen base b) only a deoxyribose sugar and a phosphate c) deoxyribose sugar, phosphate, and nitrogen base d) a ribose sugar and phosphate e) a ribose sugar, a phosphate and nitrogen base f) none of the above 3) Between the two strands of a DNA segment the nitrogen bases are held together by a) covalent bonds b) ionic bonds c) metallic bonds d) ionic and covalent bonds e) ionic and metallic f) hydrogen bonds 4) Nitrogen bases pair with bases that are a) available b) identical c) parallel d) in front of it e) complementary f) all of the above 5) the complimentary strand for the DNA strand AACGGTCCAGTCCAAG a) TTGCCAGGTGAGGTTC b) TTGCCTGGTCAGGTTC c) TAGCCAGGTCAGGTTC d) TTGCCAGGTCAGGTTC e) TTGCACGGTCAGGTTC f) TTGCCACCTCAGGTTC 6) Which of the following is attached to the transfer RNA (tRNA)? a) DNA b) Ribosome c) amino acid d) nucleic acid e) anticodon f) codon 7) The codon is located on the a) mRNA b) tRNA c) rRNA d) DNA e) none of the above f) All of the above 8) During the process of transcription, which of the following is produced? a) tRNA b) mRNA c) rRNA d) DNA e) ATP f) H2O 9) The actual site of protein synthesis is the a) Nucleus b) mitochondria c) chloroplast d) ribosome e) Golgi body f) lysosome 10) If the DNA template reads “ATA”, which of the following is corresponding sequence on the mRNA? a) ATA b) TUT c) UCU d) UAU e) UCU f) TAT 11) The genetic code is based upon the reading of how many bases at a time? a) One b) Two c) Three d) Four e) 2 3 f) 3 3 12) Amino acids are held together by __?__ bonds. a) hydrogen  b) Covalent c) Metallic d) Ionic e) peptide f) high energy 13) How many codons are needed to specify three amino acids? a) 3 b) 6 c) 9 d) 12 e) 1 f) 0 14) One similarity between DNA and messenger RNA molecules is that they both contain a) the same sugar b) genetic codes based on sequences of bases c) a nitrogenous base known as uracil d) double-stranded polymers e) a nitrogenous base known as thymine f) single-stranded polymers 15) This diagram shows which cellular process? a) replication b) transcription c) translation d) protein synthesis e) mutation f) mitosis

DNA ,RNA PROTEIN SYNTHESIS

autor:
Osadź

Tabela rankingowa

Styl wizualny

Opcje

Zmień szablon

Przywrócić automatycznie zapisane ćwiczenie: ?