1. Mr. Greene Mandarin High School 2016-2017
Biology Bell ringers
Mr. Greene
Mandarin High School

2. Bell ringers First 5 minutes of class
Bell ringers First 5 minutes of class. Everyday, fully copy the ENTIRE question and all possible answers. Rules: Number and date each question. 2 question per sheet side. Underline which you think is right. Circle which one was correct.

3. Bell ringer #1 8/28/17 – A Day 8/29/17 – B Day
Which term refers to the fact that water can dissolve polar molecules like sugar or ionic substances like salt?
A. Surface tension C. Cohesion
B. Polarity D. Universal Solvent

4. Bell ringer #2 9/1/17 – A Day 9/5/17 – B Day
In places that get very little rainfall, such as the desert in Arizona, daytime temperatures can get very high and night time temperatures can get very low, often dropping dramatically as soon as the Sun sets. How would temperatures be different if there was more water there?
A. not as hot in the day and warmer at night
B. cooler in the day but still cold at night
C. very hot in the day and even colder at night
D. warmer in the day and warmer at night

5. Bell ringer #3 09/6/17– A Day 09/7/17 – B Day
What biological macromolecule is generally insoluble in water and functions in an important role in biological membranes?
a. Carbohydrates c. Nucleic acid
b. Proteins d. Lipids
Backpacks and other bag should be on the side/back table.

6. Bell ringer #4 09/18/17– A Day 09/19/17 – B Day
Which biological molecule transports substances, speeds up reactions, makes hormones, and provides structural support?
A. carbohydrates
B. proteins
C. lipids
D. nucleic acids

7. Bell ringer #5 9/20/17 – A Day 9/21/17 – B Day
Nucleotides consist of a phosphate group, a nitrogenous base, and which of the following?
A. fatty acids
B. an amino acid
C. a 5-carbon sugar
D. Glycerol

8. Bell ringer #6 9/26/17 – A Day 9/27/17 – B Day
Metabolism is generally referred to as the chemical processes that allow the body to function. How do enzymes allow metabolic chemical reactions to proceed more quickly?
A. They lower the activation energy of biochemical reactions.
B. They cause products of biochemical reaction to break down.
C. They convert carbohydrates into proteins during reactions.
D. They decrease the amount of reactants needed for biochemical reactions

9. Bell ringer #7 9/28/17 – A Day 9/29/17 – B Day
Most organisms cannot survive in temperatures higher than 40°C. When temperatures are sustained above 40°C, the organism’s enzymes become inactive and the organism eventually dies; however, bacteria have been observed to survive in hot springs with temperatures above 40°C. Which of the following is the best explanation for these bacteria surviving at higher temperatures?
A. Bacteria can change their genetic material.
B. Enzymes are most active at acidic ph levels
C. Enzymes present in the bacteria can tolerate the harsh spring’s environment.
D. Bacteria speed up a chemical reaction that occurs in the spring’s environment.

10. Bell ringer #8 10/02/17 – A Day 10/03/17 – B Day
Which enzyme would most likely denature at 35°C?
A. 1
B. 2
C. 3
D. 4
Yes, copy down the table.