BIOD 210 Genetics Final UPDATED ACTUAL Exam Questions and CORRECT Answers | A+ Verified | Accurate Solutions

BIOD 210 Genetics Final UPDATED ACTUAL Exam Questions and
CORRECT Answers | A+ Verified | Accurate Solutions

Question 1.
A nucleotide is made up of what 3 components?

Correct Answer: phosphate group, pentose sugar (deoxyribose in DNA and
ribose in RNA), and a nitrogenous base


Question 2.
What nitrogenous bases are purines

Correct Answer: Adenine and Guanine


Question 3.
What nitrogenous bases are pyrimidines?

Correct Answer: cytosine, thymine, uracil


Question 4.
How can you differentiate between purines and pyrimidines?

Correct Answer: purines are double-ringed while pyrimidines are single-ringed


Question 5.
What are the differences between DNA and RNA?

Correct Answer: DNA: double stranded, has deoxyribose sugar(hydroxyl group
at 2' carbon), bases: A, T, G, C RNA: single stranded, has ribose sugar(one
oxygen is removed from the 2' Carbon), bases: A, U, G, C


Question 6.
Nucleoside vs Nucleotide

Correct Answer: nucleoside: pentose sugar + nitrogenous base nucleotide:
pentose sugar + nitrogenous base + phosphate group


Question 7.
What type of bonds bind nucleotide chains?

Correct Answer: Phosphodiester bonds


Question 8.
What are the 4 requirements for a molecule to be genetic material?

,Correct Answer: 1.) Must contain important info to encode hereditary traits 2.)
Must be capable of replication 3.) Must be capable of variation by mutation 4.)
Must be able to express information


Question 9.
Where are chromosomes located?

Correct Answer: cell's nucleus


Question 10.
what is a centrosome?

Correct Answer: location in the cell that contains centrioles


Question 11.
What are centrioles?

Correct Answer: microtubules that produce mitotic spindle fibers, aids in cell
division, and make up the cytoskeleton of the cell
• How many centrioles are there for every centrosome? -✓✓2 centrioles/1
centrosome


Question 12.
How many copies of each type of chromosome does each eukaryotic cell typically have?

Correct Answer: 2 copies


Question 13.
what are homologous chromosomes?

Correct Answer: copies of the same type of DNA


Question 14.
What are non-homologous chromosomes?

Correct Answer: copies of different chromosomes with different DNA


Question 15.
What is mitosis?

Correct Answer: cell division of one cell into 2 exact duplicates


Question 16.
What are the six stages of Mitosis in order?

, Correct Answer: interphase, prophase, prometaphase, metaphase, anaphase,
telophase and cytokinesis


Question 17.
What happens during mitosis interphase?

Correct Answer: mitosis stage that the cell is primarily in chromosomes are
uncondensed, so they are just hanging out in the nucleus 1 centrosome < 2
centrioles


Question 18.
What happens during interphase s-phase?

Correct Answer: Centrosome replication ( 2 centrosomes < 4 centrioles) occurs
and chromosome replication occurs (still uncondensed)


Question 19.
What happens during mitosis prophase?

Correct Answer: centrioles move to opposite ends of the cell using spindle
fibers
nuclear membrane breaks down
chromatin (DNA) condenses into chromosomes (the "x"'s); bound by a
kinetochore that attracts mitotic spindle fibers


Question 20.
What happens during mitosis prometaphase?

Correct Answer: centrioles have reached polar regions and mitotic spindle
fibers have connected to the kinetochore
• What happens during mitosis metaphase -✓✓all chromosomes are lined up
on the metaphase plate


Question 21.
What happens during mitosis Anaphase?

Correct Answer: mitotic spindle fibers pull chromosomes apart into chromatids
(4n)


Question 22.
What happens during mitosis telophase?

Correct Answer: nuclear envelope reforms
plasmo-membrane is pinched; sister chromatids are still condensed at this
point