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BIO 340 - Exam 1 Study Questions with Complete Solutions Graded A+
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BIO 340 - Exam 1Study Questions with
Complete Solutions
Graded A+
Denning Muriithi [Date] [Course title]
, BIO 340 - Exam 1 study
1. Chromosomes are located Correct Ans: inside the nucleus
2. Chromosomes are made of Correct Ans: DNA
3. A nucleotide is made of Correct Ans: sugar + phosphate + nitrogen
base
4. A molecule of RNA (ribonucleic acid) contains the bases Correct Ans:
Adenine, Cytosine, Guanine, and Uracil
5. What base pairs with cytosine? Correct Ans: Guanine
6. which statement about analogies in correct? Correct Ans: they are
derived by similar environmental constraints
7. What do scientists use to apply cladistics? Correct Ans: homologous
traits
8. What is true about organisms that are part of a clade? Correct Ans: They
evolved from a shared ancestor
9. Which one is correct? Correct Ans: A
10.Why do scientists apply the concept of maximum parsimony? Correct
Ans: to decipher accurate phylogenies
11.In which of the following pairs do both evolutionary processes
introduce new genetic variation into a population? Correct Ans: mutation
and gene flow
12.Define mutation Correct Ans: the addition of genetic variation that
increases the hereditary diversity of a population
13.If an allele has a frequency of one Correct Ans: Correct Ans: it is found in
100% of the population
14.When closely related individuals mate with each other, or inbreed, the
offspring are often not as fit as the offspring of two unrelated individuals.
Why? Correct Ans: Inbreeding can bring together rare, deleterious
mutations that lead to harmful phenotypes
15.In Griffiths experiments, what made the harmless R cells grow
capsules when exposed to heat killed S cells? Correct Ans: DNA
16.In the Hershey-Chase experiment, radioactive sulfur was used to Correct
Ans: Be incor- porated into the phage-protein coat because some amino
acids contain sulfur
17.The experiments by Hershey and Chase helped confirm that DNA was
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