FREE AND STUDY GAMES ABOUT CH. 10 BIO EXAM

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FREE AND STUDY GAMES ABOUT CH. 10 BIO EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -27 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Question text

If adenine makes up 20% of the bases in a DNA double helix, what percent of the bases are guanine?

Answer:

30% Question 2: The shared genetic code of all life on Earth is evidence that ______.

Answer:

all life shares a common ancestry

Question 3: Evidence for the spiral nature of DNA came from ______.

Answer:

X-ray crystallography studies Question 4: The modern phrasing of Beadle and Tatum's hypothesis about relationships between genes and their products is "one gene-one ______."

Answer:

polypeptide

Question 5: The region of DNA where RNA synthesis begins is the ______.

Answer:

promoter Question 6: HIV (human immunodeficiency virus) must use its own ______ to reproduce.

Answer:

reverse transcriptase

Question 7: Thymine and cytosine differ from adenine and guanine in that

Answer:

thymine and cytosine are single-ring structures, whereas adenine and guanine are double-ring structures.

Question 8: The expressed (coding) regions of eukaryotic genes are called

Answer:

exons

Question 9: The backbone of DNA consists of ______.

Answer:

repeating sugar-phosphate-sugar-phosphate pattern Question 10: What type of chemical bond joins the bases of complementary DNA strands?

Answer:

hydrogen Question 11: A mutation within a gene that will insert a premature stop codon in mRNA would

______.

Answer:

result in a shortened polypeptide chain

Question 12: The RNA that is translated into a polypeptide is ______ RNA.

Answer:

messenger

Question 13: After replication, ______.

Answer:

each new DNA double helix consists of one old strand and one new strand Question 14: RNA contains the nitrogenous base ______ instead of ______, which is only found in DNA.

Answer:

uracil... thymine Question 15: The DNA codon AGT codes for an amino acid carried by a tRNA with the anticodon

______.

Answer:

AGU

Question 16: Mad cow disease is caused by

Answer:

infectious proteins called prions.

Question 17: Translation converts the information stored in ______ to ______.

Answer:

RNA... a polypeptide

Question 18: How many nucleotides make up a codon?

Answer:

three Question 19: If a strand of DNA has the sequence AAGCTC, transcription will result in a(n)

______

Answer:

single RNA strand with the sequence UUCGAG

Question 20: Peptide bonds form between ______.

Answer:

amino acids

Question 21: Where is translation accomplished?

Answer:

ribosomes

Question 22: What protects mRNA from attack by cellular enzymes?

Answer:

a cap and tail Question 23: If one strand of a DNA double helix has the sequence GTCCAT, what is the sequence of the other strand?

Answer:

CAGGTA

Question 24: The correct sequence of events occurring during transcription is ______

Answer:

initiation, elongation, termination

Question 25: DNA and RNA are polymers composed of ______ monomers.

Answer:

nucleotide

Question 26: How many amino acids are common to all living systems?

Answer:

20

Question 27: What is the ultimate source of all diversity?

Answer:

mutation