Written by Merel Dagher (PEACE Advisor)  Which of the following has the trophic mode matched to its correct definition? (More than one may be correct) a.     photoautotroph – uses sunlight and carbon dioxide to obtain energy and carbon b.     photoheterotroph – uses sunlight and organic materials to obtain energy and carbon c.     chemoautotroph –...

Written by Merel Dagher (PEACE Advisor)  The following is a short answer question. Please answer each of the respective parts in a short-response manner (with respective sentences and calculations).  Glutamic Acid has three ionizable groups, with the respective pKas of 2.10, 4.07, and 9.47. a.     Draw the structure of Glutamic Acid and label the...

Written by Merel Dagher (PEACE Advisor)  One of the differences between monocots and “dicots” is the fate of the endosperm. Describe the ploidy and what happens in these different types of flowers. a.     Ploidy: 3n, as a result of the sperm fertilizing the two polar nuclei; in monocots, the endosperm is absorbed by the...

Written by Merel Dagher (PEACE Advisor)  Which of the following are single-celled organisms? Select all that apply. a.     Archaea b.     Bacteria c.     Fungi d.     Protists e.     All of the above Click “Read More” to see the answer(s).  The correct answer is both a and b. Archaea and Bacteria are domains that consist of prokaryotes....

Written by Merel Dagher (PEACE Advisor)  Which of the following manipulations will NOT result in a more negative delta G? a.     Increasing the entropy b.     Decreasing the enthalpy c.     Increasing the number of molecules (for example, going from a liquid to a gas) d.     Making proteins from amino acids e.     Breaking lactose into galactose and...

Written by Merel Dagher (PEACE Adivsor)  Hydrogen bonds are incredibly important, as large quantities of them provide stability and strong interactions between molecules. Of the following choices, where does hydrogen bonding NOT occur? a.     between water molecules b.     in DNA c.     within an individual amino acid d.     in polysaccharides e.     binding enzymes to...

Written by Merel Dagher (PEACE Advisor)  Which of the following amino acids has a correct description? The answers are in this format: amino acid name – structure property – three letter code – one letter code. a.     Proline – Positively charged – Pro – P b.     Tyrosine – Aromatic – Tyr – T c.     Threonine...

Written by Merel Dagher (PEACE Advisor) Histidine, one of the polar, charged amino acids, has three ionizable groups. Match the correct overall charge of histidine to the pH. (pKa1=1.8, pKa2=6.04, pKa3=9.33)a.     At pH 1, His has a net charge of +1. b.     At pH 3, His has a net charge of +1. c.     At...

By Billal Ahmed (PEACE Advisor and Co-founder) Many potential Cal students are concerned about Berkeley’s reputation as a competitive school for pre-med and are told that it’s not wise to attend Berkeley. While I’m in no position to tell anyone what to do, what I can provide is a description of my experience as...

Written by Billal Ahmed Of all the majors and career paths out there, pre-med seems to be one of the most popular, yet there are a lot of misconceptions about what it is (is it a major, what do you have to do, etc…). I’ve made this doc to help explain what it means to be a pre-med,...