Download DNA Test Study Guide

Name:___________Hour:_____
Ch 12 Test Show What You Know
Attach Ch 12 (DNA) notes to this review
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Go to my website, www.myteacherpages.com/webpages/tkeilman and then click on Biology to the left,
and then Second Six Weeks. Click on this document in the schedule, and then click on this website:
http://www2.edc.org/weblabs/WebLabDirectory1.html in this document .Click on “How Does DNA
Work?” Complete the weblab. Log off and continue the rest below.
What does DNA stand for?
DNA is made of many nucleotides hooked together. List the three parts that make up a DNA
nucleotide.
_________________ ________________ _________________
List the four nitrogen bases found in DNA._________________________
Explain Chargaff’s rules.
6. What % of T would be in a double strand if it contained %15 C? Show work.
7. What Watson and Crick’s contribution to science?
8. Explain what a chromosome is, where they are found, what they contain.
9. Fill in the reading below about karyotyping and DNA using the word bank.
Sex chromosomes
Y
HomologousFather
X
Division
Haploid
WORK BANK
Autosomes
Diploid
23
4
Mother
46
12
G
Somatic
X
Human cells have ________chromosomes, or two sets of _________. One set came from the
___________ and one from the ___________. Body cells we also call ________________Because
our body cells’ chromosomes are found in pairs, we call them ___________.
When arranged on a karyotype, you can see that there are two types of chromosomes,
____________ and ________________. In order for a human being to be considered female, their
cells must contain two ________ sex chromosomes. For a human to be considered male, their cells
will contain both an ________ and a ________ sex chromosome.
Draw arrows to two homologous chromosomes
Where did each chromosome of the pair come from?
_______________ and
_______________
How many chromosomes did this person receive from
each?_________________
What sex is this person? ___________
KARYOTYPE OF HUMAN SOMATIC CELL
10. What two types of cells do our bodies have?
11. How many chromosomes are there in your somatic cells? Gametes?
12. Explain, in detail, the process of DNA replication.
13. Name the two enzymes used during replication and state their functions:
____________________________14. Explain why YOUR cells depend on DNA replication.
15. Explain what a mutagen is.
16. What are the three types of mutations that can occur during replication?
_______________
________________ _______________
17. Which type of mutation is this below?___________________
DNA template strand to be copied: ATTGCCGTA
DNA copy after replication:
ATTTCCGTA
18. What are the two steps of protein synthesis?
19. Explain what happens during the two steps of protein synthesis (in detail).
20. List the four nitrogen bases in mRNA. Which bases bond with which DNA bases?
21. Complete this chart comparing/contrasting RNA and DNA
both
DNA
RNA
22. What is the importance of mRNA to the protein making process?
23. Use the codon chart on the next page to look up amino acids coded for by this mRNA strand: UUA
AAA GCG __________ ____________ _____________
24. What is the final product of protein synthesis?_______________
25. If you took a picture of translation occurring, what things would make an appearance in that picture?
26. What are amino acids? How do we obtain them to make proteins?
27. If a gene sequence from a DNA strand is:
AAATGGCGGATA
What are the mRNA codons that would be copied from it? ______________
What amino acids would result during translation?
____________-____________-___________-___________