Biology 1
What are histones?
Proteins that wrap around DNA
During DNA replication what enzyme unwinds the DNA?
DNA Helicase
The isotope 17/9 F decays to 17/8 O by emitting radiation. Name the type of radiation.
Positron
What do we call a substance that is used to how changes in pH by its change in color?
Indicator
If 14% of the nucleotides contain T what is the percentage of G?
36%
What are the three components of nucleic acids?
Nitrogenous Base, Pentose Sugar, Phosphate
What happens to the oxygen that is used in the Electron Transport Chain?
It is converted into water
What is the general term for the process in which a chemical species gains electrons?
Reduction
What term describes a reactant that adds electrons to another reactant?
Reducing Agent
How many unique gametes could be produced
through independent assortment by an individual with
the genotype AaBbCCDdEe?
16
The method of DNA replication, where each
original strand is used as a template to build a new
strand, is called the ________ method
Semiconservative
On the lagging strand, what are the small DNA fragments called?
Okazaki Fragments
What word is used to describe a solution that contains a conjugate acid-base pair and is
resistant to large changes in pH?
Buffer
A pH increase of 2 means what change in proton concentration?
100
n watermelons, the gene for green color is
dominant over its allele for striped color. At another
gene locus, the gene for short shape is dominant
over its allele for long shape. These two allele pairs
assort independently. If a plant with long, striped
fruit is crossed with a plant that is heterozygous for
both of these traits, what percentage of the offspring
do you expect will be short and green?
25%
What is the function of DNA primase?
TO create a short RNA primer that is complementary to the DNA template
In sickle cell anemia, the defective hemoglobin
differs from the normal hemoglobin by
a single amino acid substitution (EV6)
The initial responders to the Chernobyl nuclear disaster were exposed to 22 Sv of radiation. The
IUPAC unit Sievert=Sv=100 REM. What is this exposure in units of rem?
2,200 rem
What is the oxidation state of Carbon in bicarbonate? (H2CO3)
-4
What is the pH of a 0.035 M HCl solution?
1.46
Occasionally, chromosomes fail to separate
during meiosis, leading to daughter cells that have
an abnormal number of chromosomes. This
phenomenon is called
Nondisjunction
How many Barr bodies does a normal female contain in each diploid cell?
One
What catalysts are often used in hydrogenation of alkenes? (name 3)
Platinum, palladium, and nickel
The isotope 17/9 F has a half-life of 66 seconds. If an original sample of 17/9 F had a mass of 50.0
grams, what mass of 17/9 F remains after 198 seconds?
6.25 g
If a sequence of DNA is 5' AATTGCCGT 3', its
complement is
3' TTAACGGCA 5'