Chapter 8 - DNA Structure And Function Flashcards Preview

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Flashcards in Chapter 8 - DNA Structure And Function Deck (14)
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1
Q

Chromosome number ___________.

a. refers to a particular chromosome pair in a cell
b. is an identifiable feature of a species
c. is like a set of books
d. all of the above

A

b. is an identifiable chromosome pair in a cell

2
Q

Sister chromatids connect at the ____________.

A

centromere

3
Q

The basic unit that structurally organizes a eukaryotic chromosome is the _____________.

a. higher-order coiling
b. double helix
c. base sequence
d. nucleosome

A

d. nucleosome

4
Q

Which is not a nucleotide base in DNA?

a. adenine
b. guanine
c. uracil
d. thymine
e. cytosine
f. all are in DNA

A

c. uracil

5
Q

What are the best pairing rules for DNA?

a. A–G, T–C
b. A–C, T–G
c. A–U, C–G
d. A–T, G–C

A

d. A–T, G–C

6
Q

One species’ DNA differs from others in its ______________.

a. sugars
b. phosphates
c. base sequence
d. all of the above

A

c. base sequence

7
Q

When DNA replication begins, ____________.

a. the two DNA strands unwind from each other
b. the two DNA strands condense for base transfers.
c. two DNA molecules bond
d. old strands move to find new strands

A

a. the two DNA strands unwind from each other

8
Q

Show the complementary strand of DNA that forms on this template DNA fragment during replication: 5’—GGTTTCTTCAAGAGA—3’

A

3’—CCAAAGAAGTTCTCT—5’

9
Q

___________ is an example of reproductive cloning.

a. Somatic cell nuclear transfer (SCNT)
b. Multiple offspring from the same pregnancy
c. Artificial embryo splitting
d. a and c
e. all of the above

A

d. a and c

10
Q

The DNA of each species has unique ________ that set it apart from the DNA of all other species.

a. nucleotides
b. chromosomes
c. sequences
d. bases

A

c. sequences

11
Q

_________ can be used to produce genetically identical organisms (clones).

a. SCNT
b. Embryo splitting
c. Therapeutic cloning
d. all of the above

A

d. all of the above

12
Q

A karyotope reveals the ___________ of a single cell.

a. base sequence
b. chromosomes
c. hereditary information
d. clones

A

b. chromosomes

13
Q

SCNT with human cells is called ________________.

A

therapeutic cloning

14
Q

Match the terms appropriately.

\_\_\_ bacteriophage
\_\_\_ clone 
\_\_\_ nucleotide
\_\_\_ diploid
\_\_\_ DNA ligase 
\_\_\_ DNA polymerase 
\_\_\_ autosome 

a. nitrogen-containing base, sugar, phosphate group(s)
b. copy of organism
c. does not determine sex
d. only DNA and protein
e. fills in gaps, seals breaks in a DNA strand
f. two chromosomes of each type
g. adds nucleotides to a growing DNA strand

A

Match the terms appropriately.

(d) bacteriophage
(b) clone
(a) nucleotide
(f) diploid
(e) DNA ligase
(g) DNA polymerase
(c) autosome

a. nitrogen-containing base, sugar, phosphate group(s)
b. copy of organism
c. does not determine sex
d. only DNA and protein
e. fills in gaps, seals breaks in a DNA strand
f. two chromosomes of each type
g. adds nucleotides to a growing DNA strand