1. How much do you know about genes?

2. Which of the following is NOT on DNA? thymine deoxyribose guanine adenine uracil

3. __ is when the mRNA is decoded by tRNA so that amino acids can line up? interphase photosynthesis replication transcription translation

4. What did James Watson do? Discovered that replication is semi-conservative Identified the location of the nuclear pores Discovered that thymine always bonds with adenine Took x ray pictures of DNA Discovered that DNA is a double helix

5. Which of the following might be a rung on DNA? Adenine and uracil Ribose and deoxyribose Deoxyribose and thymine Thymine and uracil Cytosine and guanine

6. Cytosine is complementary to? plurine thymine adenine uracil guanine

7. Which of these is NOT a reason why Mendel used peas? Easy to cross pollinate Many observable traits Easily observed traits Quick reproduction Contain only eggs or sperm

8. __ is semi-conservative? A, B, and C A and B translation transcription replication

9. An anticodon is 3 bases on ? DNA mRNA pRNA dRNA tRNA

10. Because adenine always bonds with thymine, we call adenine and thymine __ base pairs. expository mandatory supplementary explanatory complementary

11. Replication takes place in the ? Ovaries ribosome cytoplasm Endoplasmic reticulum nucleus

12. Proteins are made of chains of? DNA glucose incorrect nucleotides Amino acids

13. What happens when a true- breeding plant self-pollinates? All of the above None of its offspring have the same traits as the parent. Some of its offspring have the same traits as the parent. One of its offspring has the same traits as the parent. All of its offspring have the same traits as the parent.

14. What did Francis Crick do? Discovered that replication is semi-conservative Identified the location of the nuclear pores Discovered that thymine always bonds with adenine Took x ray pictures of DNA Discovered that DNA is a double helix

15. A plant with two dominant OR two recessive alleles is said to be Cross pollinating heterozygous Self pollinating alleles homozygous

16. What is a phenotype? The alleles contained by the organism The way an organism feels A dominant gene A group of 5 alleles The way an organism looks

17. Which of these might be on the sides of the DNA ladder? Peptide bond tRNA uracil guanine phosphate

18. What does DNA do? All of the above Controls what moves in and out of cells Contains the enzymes responsible for digestion Produces proteins Carries the blueprint for making proteins

19. __ is when one gene of DNA is copied to make mRNA? mitosis photosynthesis translation replication transcription

20. Translation takes place in the? nucleus Hydrogen bond Golgi apparatus lysosome ribosome

21. A string of nucleotides that has the instructions for a certain trait is a? homozygous cell dominant chloroplast gene

22. 3 bases code for one organelle protein DNA cell Amino acid

23. In Mendel’s parent cross, he tested a true breeder long with a true breeder short. The offspring were 25% tall, 50% medium, 25% short 75% tall, 25% short 100% medium 75% short, 25% tall 100% tall

24. 2 bases on DNA are held together by? gravity A nitrogen bond A peptide bond Amino acids A hydrogen bond

25. Which of the following is NOT on DNA? thymine deoxyribose phosphate adenine ribose

26. Which of the following is a genotype? allele dominant Widow’s peak trait RR

27. Replication produces? Amino acids 2 similar DNA molecules mRNA tRNA 2 identical DNA molecules

28. Which of the following is a homozygous dominant genotype? gg gG G Gg GG

29. Amino acids are connected by? Rock bands Rubber bands Nitrogen bonds Hydrogen bonds Peptide bonds

30. What did Maurice Wilkins do? Discovered that DNA is a double helix Discovered that cytosine always bonds with guanine Discovered the chemical structure of the phosphate molecule Used the word “cell” when looking through a microscope Took x ray pictures of DNA

31. Which of the following is a heterozygous genotype? WW No widow’s peak ww Widow’s peak Ww

32. Which of the following is a phenotype? Homozygous dominant allele GG dominant green

33. Which of the following is NOT on DNA? guanine phosphate deoxyribose thymine uracil

34. A codon is 3 bases on ? Peptide bonds Amino acids tRNA DNA mRNA

35. What did Chargraff do? He discovered that DNA is a double helix He named the peptide bonds that connect amino acids He took x ray pictures of DNA He discovered that replication is semi-conservative He discovered that adenine always bonds with thymine

36. Transcription takes place in the? ribosome Cell membrane Endoplasmic reticulum Amino acids nucleus

37. Which of the following might be a rung on DNA? Cytosine and thymine Adenine and uracil Deoxyribose and phosphate Ribose and phosphate Adenine and thymine

38. Which of these might be on the sides of the DNA ladder? Amino acids ribose adenine uracil deoxyribose

39. Bases are connected by ? gravity James bonds Nitrogen bonds Peptide bonds Hydrogen bonds

40. What did Rosalind Franklin do? Discovered that DNA replication is semi-conservative Discovered that mRNA contains ribose sugar instead of deoxyribose Determined that DNA is a double helix Determined that Adenine always bonds with Thymine Took x ray pictures of DNA

41. Transcription produces? Amino acids 2 similar DNAs tRNA 2 identical DNAs mRNA

42. What does a nucleotide contain? 2 nitrogenous bases and a peptide bond 2 nitrogenous bases and a hydrogen bond Deoxyribose, ribose, and phosphate Base, deoxyribose, ribose Base, sugar, phosphate