Flashcard Set Preview
| Side A | Side B | ||
| 1 |
How many chromosomes are in the human body?
|
46
|
|
| 2 |
How many pairs of chromosomes are non sex (autosome) chromosomes?
|
22
|
|
| 3 |
DNA wraps around proteins called ______?
|
Histones
|
|
| 4 |
What are the end of chromosomes called?
|
Telomeres
|
|
| 5 |
Each strand of a chromosome is known as a ____?
|
Chromatid
|
|
| 6 |
What are two major phases in a cell cycle?
|
mitosis (cell divides)interphase (cell does not divide)
|
|
| 7 |
What is a centromere?
|
Constricted
region of a mitotic chromosome that holds
sister chromatids together
|
|
| 8 |
What is a karyotype?
|
The display of all 46 chromosomes
|
|
| 9 |
Referring to the "DNA Packaging into Mitotic Chromosome" figure in class, how big is a short...
|
2 nm
|
|
| 10 |
What's the size of the beads on a string (based off the slide in class)?
|
11 nm
|
|
| 11 |
What's the size of the Chromatin fiber?
|
30 nm
|
|
| 12 |
What is the size when chromatin fibers form loops?
|
300 nm
|
|
| 13 |
What's the size when chromatin fiber loops are condensed into chromosomes?
|
700 nm
|
|
| 14 |
What is the structural unit of a chromatin?
|
the nucleosome
|
|
| 15 |
What is included in a nucleosome?
|
two turns of dna helix wrapped around octameric core of histones (+ 1 linker region)
|
|
| 16 |
What are the histones contained in the octameric core?
|
two each of H2A, H2B, H3, H4
|
|
| 17 |
What part of the chromosome is highly condensed?
|
Heterochromatin
|
|
| 18 |
What part of the chromosome is loosely condensed?
|
euchromatin
|
|
| 19 |
What type of bonds hold the strands together in DNA?
|
Hydrogen bonds
|
|
| 20 |
What three components make up a nucleotide?
|
a sugar, phosphate group, and a base
|
|
| 21 |
Thymine paris with what other base?
|
Adenine
|
|
| 22 |
Cytosine pairs with what other base?
|
Guanine
|
|
| 23 |
DNA lacks oxygen at what carbon position?
|
2 prime
|
|
| 24 |
The 5 prime carbon of DNA contains what?
|
a phosphate
|
|
| 25 |
the 1 prime carbon of DNA contains what?
|
A base
|
|
| 26 |
Which bases are singled ringed?
|
pyrimidines
|
|
| 27 |
Which bases are doubled ringed?
|
purines
|
|
| 28 |
What two bases are purines?
|
adenine and guanine
|
|
| 29 |
What two bases are pyrimidines?
|
Cytosine and Thymine
|
|
| 30 |
What type of bonds link nucleotides?
|
phosphodiester
|
|
| 31 |
What are the four ribonucleic acids?
|
AdenineGuanineCytosineUracil
|
|
| 32 |
What is a gene?
|
A gene is usually defined as a segment of DNA
that contains the instructions for making...
|
No comments yet! Be the first to add a comment below!
Please login to post comments.
After login, we will forward you back to this flashcard.