Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

BIOL211.ex3

ex3

QuestionAnswer
14*. According to the Chargaff s rule if the DNA of a certain organism has cytosine as 30% of its bases, then what percentage of its bases would be adenine? 20%
19*. The function of the promoter is to signal the RNA polymerase where to start transcribing the DNA
23*. Stop codon : signals the end of protein synthesis
31.* Which method is utilized by euk to control their gene expression that is not used by prok. 'A&B only': Control of chromatin remodeling; Control of RNA splicing
40*. Dideoxy nucleotides used in DNA sequencing lack __ atoms in 2' and 3' of their ribose sugar. oxygen (NOT carbon or hydrogen)
1.Egg and sperm, involved in sexual reproduction, are formed through a process called meiosis.
2. Somatic cells of roundworms have four chromosomes. How many chromosomes would you find in an ovum from a roundworm? two
3. Sister chromatids separate during anaphase.
4. Meiosis involves the creation of haploid cells from diploid cells. The haploid chromosome number is created when homologous chromosomes separate.
5. What can you infer from the karyotype shown in Figure 12.1? This is a karyotype of a male.
6. Asexual reproduction takes place by which of the following processes? mitosis
7. The chromosomes that are of the same size and carry similar genes are called homologs
8. What is the ratio of phenotypes in the offspring produced by the cross Aa x Aa? Assume complete dominance for the trait. 75% dominant: 25% recessive
9. According to the Law of Segregation, in an organism with the genotype Aa half the gametes will have A and half will have a
10. A recessive gene is one whose effect is masked by a dominant allele. false
11. If the allele for active lactase enzyme (L. is dominant to the allele for inactive lactase (1), the cross LI x 11 is expected to produce 1/2 with active and 1/2 with inactive lactase
12. The polypeptide encoded by mRNA CCCAUGCCCCUGUUUUGA has how many amino acids? Hint: UGA is the stop codon in the gene encoding this mRNA. AUG encodes the initiator methionine 4
13. For a eukaryotic chromosome, which of the following is true? RNAs of different genes can be transcribed off either DNA strand, but are always made 5'-3'
15. ___ transport amino acids to ribosomes tRNAs
16. Synthesis of Okazaki fragments is required for both leading and lagging strands of a DNA molecule during their replications false
17. Complementary DNA base pairs are held together by hydrogen bonds
18. HIV, the virus causing AIDS, has the ability of making DNA from the viral RNA using its own enzyme known as reverse transcriptase true
20. Which occurs in the nucleus transcription and replication of genetic material
21. The anticodon for AUC is UAG
22. Find the mismatch transcription is protein synthesis
24. Exons are regions of the DNA that code for the amino acids of a protein true
25. Which of the following processes is central to the initiation of transcription? Binding of sigma to the promoter region
26. Which of the following is(are. post-transcriptional modifications occurring in eukaryotic mRNAs? all: addition of poly A tail, alternative splicing, addition of methyl-guanosine cap
27. Post-translational modifications include all of the following except removal of introns
28. Full induction of the lac operon occurs when __ lactose levels are high and glucose levels are low
29. A group of genes that are regulated together and transcribed into a single mRNA is operon
30. CAP is said to be responsible for positive regulation of lac operon because CAP bound to the CAP binding site increases the frequency of transcription initiation
32. The regulatory transcription factor bind to enhancer
33. Which of the following allows more than one type of protein to be produced from one gene? alternative forms of RNA splicing
34. Which of the followings is considered epigenetic modification? Acetylation
35. A major feature of an enhancer element is that it can function in an independent position and independent orientation manner. true
36. Restriction enzymes are: Proteins made by bacteria and capable of digesting DNA at specific sequences
37. The polymerase chain reaction is a method to __ Both B&C:making millions of copies of a small amount of DNA and making gene copies quite rapidly. NOT for analyzing fingerprints.
38. Which of the following describe the various steps of PCR? denaturation, annealing, extension (NOT 'all of the above')
39. Many identical copies of genes cloned in bacteria are produced as a result of A&B only: plasmid & bacterial cell replication
Created by: boborii
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards