Tutor profile: Chris B.
Subject: SAT II Biology E/M
Which of the following are purines? A. adenine + thymine B. cytosine + guanine C. adenine + guanine D. guanine + cytosine
C. Adenine + Guanine For this question a simple phrase to keep in mind helps us figure this one out: " A G is pure" .... with this phrase, you'll remember that "AG" is the symbol for Silver in the periodic table. Now the next part of the phrase "is Pure" can be remember by recognizing that silver is a pure metal and precious metal that is not combined with any other element in the periodic table. Since we have this phrase "in the back of our mind", A and G refers to adenine and guanine both being PUR, or in other words Purines Therefore. We have our answer. C . Adenine + Guanine Test Taking Tips: - Cover the answers and write everything that you can think relating to the subject (PURINE) of the question. ...This helps you to not be influenced by the answer choices available... more often than not, the correct answer will be in the answer choices that you wrote above the question
Which of the following has a negative particle charge? A. electron B. Proton C. Neutron D. Two of the above
Electron is the correct answer. Let's look at the answer choices and breakdown the words Pro= forward, going forth, creation, (all of these words hints to progression, or positivity) Neutron is very similar to the word neutral; neutral means in the middle; not on one side or the other; thus a neutron lacks a charge Because both of the above option do not hint to negativity, Answer choice "D" cant be correct Without any further dissection, "A" is the only answer choice left. This gives us our correct answer as an Electron has a negative charge Test Taking Tips: - Cover the answers with your hand - identify the main objects within this question (negative, particle) - Write above the question everything that you can think of that a negative charge
Which is a structure that conveys information from a brain cell out towards a tissue cell? A. Efferent nerve B. Afferent nerve C. Spinal Nerve D. All of the above
Efferent nerve. Break the word down: Ef "Ef" is a prefix meaning "out" "fere" is similar to the word "ferre" which means "to bear" or "to carry" Now, we see that the word, efferent, means information is being carried out. We've found our answer. Test Taking Tips: - When thinking about this question we have to look for all of the clues before anything else. - Cover the answers with your hand and dissect the question. - Underline the key subject (brain cell). Identify what the key subject does (conveys). - Circle important words in the question. - With your hand still covering the answers write everything that you can think of to answer the question that you can remember relating to brain cells and tissue cells. - Identify the purpose. - What is the purpose of a brain cell conveying information to a tissue cell?