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12) Which of the following can denature a protein:

A. heat

B. acid

C. alcohol

D. salt

E. all of the above

13) DNA is typically a single strand with a combination of adenosine (A), thymidine (T), cytodine (C) and guanosine (G) nucleotides. It is read by the cell’s ribosomes during protein synthesis.

A. Both statements are true.

B. Both statements are false.

C. The first statement is true, the second is false.

D. The first statement is false, the second is true.

14) Chitin is an important molecule in cells walls of fungi. It is primarily composed of long chains of carbohydrates.

A. Both statements are true.

B. Both statements are false.

C. The first statement is true, the second is false.

D. The first statement is false, the second is true.

19) Place a P next to attributes exclusively prokaryotic, an E next to attributes exclusively eukaryotic, and a P & E to attributes that can be common to both prokaryotes and eukaryotes.

(MAKE YOUR ANSWERS CLEAR, OR YOU WILL GET THE QUESTION WRONG!)

A. chitin cell wall

B. linear chromosomes

C. mitochondria

D. flagella

E. nucleoid

F. ribosomes

G. histones

H. smooth endoplasmic reticulum

I. enzymes

J. nuclear membrane

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Deanna Hettinger
Deanna HettingerLv2
27 Oct 2018

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Related questions

4) Which of the following CAN be multicellular? (CIRCLE ALL THAT APPLY)

A. bacteria

B. archaea

C. fungi

D. helminths

E. protozoa

7) Robert Koch was a German biologist that formulated Koch’s postulates. Why was this important?

A. It outlined the existence of heat-resistant spores.

B. It developed a way science can link a disease to a causative microbe.

C. It developed guidelines for doctors to disinfect their hands before surgery.

D. It made microscopes powerful enough to see microbes.

E. It instructed dairy farmers on the process of pasteurization.

8) Carbohydrates are the most common macromolecule in the average cell. They also are a component of DNA and RNA.

A. Both statements are true.

B. Both statements are false.

C. The first statement is true, the second is false.

D. The first statement is false, the second is true.

11) The different kinds of amino acids are differentiated by their carboxyl groups. The sequence of the amino acids in a protein is called the primary structure.

A. Both statements are true.

B. Both statements are false.

C. The first statement is true, the second is false.

D. The first statement is false, the second is true.

3) Bacteria are ubiquitous, found in the deepest oceans and the highest mountains. Photosynthetic bacteria are responsible for introducing oxygen into the atmosphere and were instrumental in development of life on this planet.

A. Both statements are true.

B. Both statements are false.

C. The first statement is true, the second is false.

D. The first statement is false, the second is true.

Please provide correct answer and explanation to the answer,Thank you!

  1. If an enterprising graduate student decided to repeat theHershey-Chase

    experiment but neglected to perform the blending portion, wherewill the

    isotopes be found?

    a. 35S will be found in the supernatant and 32P will be found inthe pellet

    b. 32P will be found in the supernatant and 35S will be found inthe pellet

    c. Both 32P and 35S will be found in the supernatant

    d. Both 32P and 35S will be found in the pellet

    e. None of the above are correct

  2. Chargaff�s rules include:

    a. The ratio of A�s + T�s to G�s + C�s is always consistent

    b. A=G and T=C

    c. Purines/Pyrimidines = 1

    d. More than one of the above are true

    e. None of the above are true

  3. Sea Urchin DNA contains 18% guanine (which is true); how muchthymine

    does it contain?

    a. 9%

    b. 18%

    c. 32%

    d. 36%

    e. 64%

  4. E. coli DNA contains a little over 25% guanine. If samples weretaken of E.

    coli DNA and Sea Urchin DNA and denatured in water baths, whichwould

    melt at a lower temperature?

    a. E. coli DNA

    b. Sea Urchin DNA

    c. They would melt at the same temperature

    d. There is not enough information to determine the answer

    e. DNA doesn�t �melt,� it isn�t ice cream for goodness sake!

  5. If testing the second generation results in tube B, which modelcan we

    conclude is correct?

    a. Dispersive

    b. Semi-conservative

    c. Conservative

    d. Semi-dispersive

    e. We can�t conclude yet, it could still be more than onepossibility

  6. Phosphorus is required to synthesize dNTPs used in DNAreplication. Imagine

    you grow E. coli in media containing non-radioactive phosphorusfor many

    generations, then switch the E. coli to media containingradioactive

    phosphorous (32P). You then sample the E. coli after one roundof replication

    for radioactivity. Where will you find radioactive phosphorus inthe DNA?

    a. Both strands will contain 32P

    b. One strand will contain 32P

    c. Neither strand will contain 32P

    d. Drats! I knew I should have done suggested problem 12.19!

  7. Which of the following statements about chromosomes are alwaystrue?

    I. Non-histone proteins make up about 5% of a eukaryotic

    chromosome by weight

    II. Histones have a negative charge

    III. Prokaryotes have a single linear chromosome

    a. Only Statement I is true

    b. Only Statement II is true

    c. Only Statement III is true

    d. More than one of the above statements are true

    e. None of the above statements are true

  8. What portion of the human genome is made up of highly repetitiveDNA?

    a. Less than 5%

    b. 6 � 20%

    c. 21 � 30%

    d. 31 � 40%

    e. Over 40%

  9. Which of the following statements are always true?

    I. Histones are very conserved between species

    II. Archaea have nuclei

    III. Prokaryotes are haploid and eukaryotes are diploid

    a. Only Statement I is true

    b. Only Statement II is true

    c. Only Statement III is true

    d. More than one of the above statements are true

    e. None of the above statements are true

  10. An individual�s phenotype is a function of:

    a. The alleles they carry

    b. The environment they live in

    c. The interaction between an individuals genes and theenvironment

    d. Two of the above are correct

    e. All of the above are correct

  11. A homologous pair of chromosomes showing a

    crossover are shown to the right for reference. Are all

    the sperm from one human male genetically identical?

    a. Yes

    b. No, variation occurs during mitosis

    c. No, variation occurs during meiosis I

    d. No, variation occurs during meiosis II

    e. No, variation occurs during both meiosis I and II

  12. Production of gametes in humans requires which kind ofdivision?

    a. Meiotic and is reductional

    b. Mitotic and is reductional

    c. Meiotic and is equational

    d. Mitotic and is equational

    e. None of the above

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