0.0001 hydrogen ions represent a pH of....
4
Starch can be broken down into many monomers of _____ if acted upon by the enzyme _____.
glucose, amylase
Which of the following best describes an omega-3 fatty acid?
It is a fatty acid chain that consists of a double bond located 3 carbons from the end.
Which of the following would probably denature proteins or enzymes?
-Having a small intestine pH of 9.0.
-Having a blood pH of 6.0.
-Having a body temperature of 101 degrees
Control of blood glucose levels is maintained by a ______ in which hormones such as _____ and _____ are necessary.
negative feedback mechanism; insulin and glucagon
Blood vessels will dilate in response to ____ in an effort to maintain homeostasis via the ____ feedback mechanism.
heat; negative
In order for an atom to develop a positive charge of some sort, which of the following must change in order to accomplish that task?
electrons
Which of the following are located in the nucleus of an atom?
proton and neutron
When a secondary protein denatures, it might become a / an ____.
primary protein
Which of the following is NOT represented by the "nondecimal" number on the periodic chart?
It is the number of neutrons the atom has.
The fluid in the small intestine normally has a pH of ____.
7-8
In order for an atom to become an ion, its number of ____ must change and in order for an atom to become an isotope, its number of ____ must change.
electrons : neturons
What does the "24" in 24Mg represent?
The AMU value
Which of the feedback mechanisms is basically at work 24 hours a day?
Negative
Pretend atom X is on the periodic table. The numbers associated with it are: 21, 51.8 and it is in the second column within the table. What is its ionic charge?
2+
Cholesterol is made of _____.
three 6-carbon rings plus one 5-carbon ring
Which of the following initiates the release of oxytocin?
Pressure
Enzymes may malfunction when the pH or temperature is not just right. This malfunction is due because at abnormal pH or temperature, the enzymes will ____.
Denature
Which of the following is correctly written for the bicarbonate ion?
HCO31-
When hydrogen becomes an ion, how many electrons will it have?
0
Which of the following hormones will cause a decrease in blood calcium levels?
Calcitonin
Which of the following is written correctly for a "pretend" atom?
Xz
The time it takes for half of a radioactive isotope to decompose is ______.
-known as half-life.
-a certain time period characteristic for that isotope.
-a time frame determined by physicists
3H means that this hydrogen has ____.
2 neutrons
Which of the following would probably denature proteins?
-A body temperature of 100.5 degrees
-A small intestine pH of 6.0
Which of the following statements is true regarding a negative feedback system?
The negative feedback mechanism works to control the fluctuations that do occur
Proteins are made of _____ bonded together in very precise sequences.
Amino Acid
Which of the following best describes the concept of homeostasis?
It is a condition where the ICF of a cell remains relatively stable.
Lipids are molecules that are _____ in water.
Insoluble
Which of the following would be an example of a positive feedback mechanism at work?
-the birth of a child
-blood clotting
-a fever
The symbol K stands for potassium. The letter K comes from the Latin ____.
Kalium
The body responds to bacteria by creating a fever. This is an example of a ____ feedback mechanism.
Positive
Lactose is made of ____.
1 glucose and 1 galactose bonded together
How many times more acidic is pH 6 compared to pH 9?
1000
When we eat malt sugar, we have an enzyme called _____ that will break down maltose to form glucose and _____.
Maltase, glucose
Pretend atom X is on the periodic table. The numbers associated with it are: 21, 51.8 and it is in the second column within the table. How many protons does it have?
21
If you give a neutral atom 3 electrons it will ____.
Develop a negative 3 charge
Which type of feedback mechanism am I describing: A new stimulus will enhance the original stimulus?
Positive
Which of the following is an example of a polysaccharide?
Glycogen