Bio Review
the null hypothesis assumes that any difference in observed results between groups is due to random chance. "Your skittles bag had more greens than mine because of randomness at the factory."
Which central tendency would be most appropriate for this data set of runner's mile times:
5:31 minutes
5:22 minutes
6:01 minute
5:42 minutes
mean/average
Almost all special properties of water are due to it being a _______ molecule.
polar
When there is a transfer of electrons from one element to another
Given the DNA strand 3' ATTCGA 5'... what would the complementary strand be?
5' TAAGCT 3'
Glucose in addition to oxygen is used as a fuel for which process?
cellular respiration
how close to the mean is the entire set of data as a whole (spread)
Why does the meniscus of water in the tube appear concave?
The adhesive forces are stronger than cohesive forces of water.,
Which two functional groups are always a part of amino acids?
Carboxyl and Amine group
What are 3 differences between RNA and DNA?
DNA is double stranded
DNA has a deoxygenated ribose sugar
DNA uses the base thymine
Explain what it means if error bars of the control group and the experimental group overlap.
If any error bars overlap, it means there is no significant difference between the two means. In this case, we would accept the null hypothesis that any difference in observed results is due to random chance.
NFL (National Football League) players make millions of dollars. The Cincinnati Bengals are in the NFL. Joe Burrow is on the Cincinnati Bengals. Joe Burrow makes millions of dollars.
This is an example of .....
deductive reasoning
Which station in the lab demonstrated surface tension?
penny station
Which macromolecules is Phosphorus an important building block for?
Nucleic acids and lipids
Explain why a change in sequence of amino acids would lead to a denatured protein
a change in amino acid sequence would result in incorrect secondary folding (hydrogen bond formation) and eventually incorrect tertiary folding (R group interactions)
Mr. Alfred told me that he has created a toothpaste that whitens your teeth after just one use! What TYPE of control would you use? and give an example of what it could be.
positive control - any known whitening solution/formula
if there are outliers in our data set, the median would be more appropriate
why is water referred to as "the universal solvent"?
its polar properties (partial charges) allow it to interact with most other substances.
Which element did we discuss, that participates in an r-chain interaction and creates an extremely strong bond?
Sulfer
Steroids are an example of which macromolecules?
lipids
Mr. McGowan wants to see if a new type of wax "The Bee's Knees" will allow him to stick to his surfboard better. Identify the IV and 3 constants.
Type of surf wax (new formula) is the IV
same board
same surfer
same conditions (water temp/wind)
same clothes/wetsuit
Find the standard error of this data set with a standard deviation of 11.0
3.3 cm
4.2 cm
5.5 cm3
3.8 cm
5.5
Explain why solid ice is less dense than liquid water
As temperature decreases, water molecules orient into a crystalline structure due to hydrogen bonding. This stabilizes ice in a position where water molecules are farther apart and becomes less dense causing ice to float
How many valence electrons does silicon have?
4
Explain which type of fatty acid chains allow for the most fluidity inside the cell membrane
unsaturated fatty acid chains have double bonds that cause "kinks" or bends in the fatty acid chains. This allows them to keep distant and flexible in position.