Physio

You place a RBC (0.9%) into a 5% sugar solution. Which statement below is false? The RBC is hypotonic to the 5% solution

Which is an example of a sensor in a negative homeostatic feedback loop? Chemoreceptor in carotid body

For  membrane fluidity experiment, the part of the experiment that actually validated that the membrane was fluid was: The labeled antibodies of the human and mouse intermixing

An example of primary active transport would be a protein requiring ATP to transport sodium ions across the plasma membrane. True

If a red blood cell is put in a solution and it hemolyzes, then the solution is considered to be: Hypotonic

If your body temperature goes too high you can denature enzymes in your body. True

What does an integrator do in a homeostatic pathway? Measures the signal coming in to a set point and send a signal out to the body

Which of the following represents stages of the cell division (mitosis) in the proper sequence? Prophase, metaphase, anaphase, telophase

Which is not true for proteins? They are comprised of mostly cellulose

What would be a disturbance for blood glucose homeostasis (normal blood glucose set point = 77mg/dL)? A permanent decrease in insulin production from the Islets of Langerhans

Dr. Bio measures your total cholesterol and he reports back to you that your level is 300 mg/ 100 ml of plasma. You do what? Eat more oatmeal and flax to increase your HDL level. 

How do you make an unsaturated fatty acid? Perform a dehydration synthesis reaction on a saturated fatty acid

Which is false for antioxidants? They speed up reactions in your body

Which molecules do not dissolve in water? Non-polar

Which molecule requires a transport protein to get through the plasma membrane (either channel or carrier protein)? Two of the answers are correct

Interphase is considered to be part of normal cell division (mitosis). False

What is the function of ATP? All of the answers are correct

What are the three kinds of lipids? Triglycerides, phospholipids, and steroids

When glycerol combines with 3 fatty acids to form a triglyceride (fat), which of the following chemical reactions has occurred? Dehydration Synthesis

How can you alter a protein’s shape? More than one answer is correct

If a red blood cell is put into a solution and it maintains its shape, then the solution is considered to be: Isotonic

Which molecule requires some type of transport protein to get through the plasma membrane? Sodium Ion

Cofactors are molecules that activate enzymes. Which is not a cofactor? Mercury

The nitrogenous bases found in DNA have complementary paring. Which pair is correct? C-G

Which is not true for meiosis? Results in a gamete that is 2N

In the diagram below the two solutions are separated by a semi permeable membrane. In which direction will net movement of water occur? From side A to side B

Which is not a component of a DNA molecule: Ribose Sugar

Phospholipids are similar to fatty acids except for? Phospholipids have a phosphate group

Which is not true for cells? They allow diffusion of all molecules

If you combine a molecule of glucose and fructose, which statement is true? You have formed sucrose

Which is true for enzymes? Activity will increase until the enzyme becomes saturated

What method would you use to get glucose into a cell along/down it’s concentration gradient (from high to low)? Facilitated Diffusion

Which is not considered an integrator in a negative homeostatic feedback loop? Pancreas

Which phase of the cell cycle is where cytokinesis takes place? Telophase

What vitamin do we produce by sitting in the sun; it aids in calcium absorption from the small intestine? Vitamin D

Why is it important to think about ion dissociation in the body? All the above

In what order do you use macromolecules for fuel? Carbohydrates, lipids, proteins

Which is false for cholesterol? It can dissolve in water/blood 

You place a RBC (0.9%) into a 0.5% sugar solution. Which statement below is false? The RBC is hypertonic to the 0.5% solution

Which is not a membrane protein function? Protein synthesis

Ingesting (eating) excess hydrophilic vitamins, such as vitamin C, results in excess vitamin C being stored in your tissues. False

Diffusion is: The movement of molecules from an area of high molecular concentration to an area of low molecular concentration across a selectively-permeable membrane

The hormone responsible for glucose uptake/removal from the blood is: Insulin

What method would you use to get sodium ions into a cell against sodium’s concentration gradient (from low to high concentration)? Active Transport

Which phase of the cell cycle is where the cell is functioning normally or doing its job? Interphase

Evidence for mitochondria once being bacteria that our cells engulfed is: It has it’s own DNA

Ionic molecules (ie NA+, K+) can diffuse straight through the plasma membrane. True

What is the difference between cis and trans fatty acids? Cis fatty acids have hydrogens on the same side of the carbon double bond and trans fatty acids do not

Cofactors are molecules that activate enzymes. Where do we get cofactors from? Vitamins found in fruits and vegetables

RNA has what nitrogenous base in place of thymine? Uracil

Large polar molecules (ie glucose) can diffuse straight through the plasma membrane? False

Which lipoprotein is comprised of more protein and less cholesterol so it scavenges for cholesterol in the blood? High density lipoprotein

A normal human being has 46 chromosomes (23 pairs/2N/diploid) in each somatic cell (body cell). True

The three main compounds digested by the digestive system are? Fats, carbohydrates, and proteins

Meiosis is the process in which our sex cells go from 46 chromosomes to 23 single chromosomes. True

The effector in any negative feedback loop is usually: An organ/tissue

If a red blood cell is put into a solution and it crenates (shrinks), then the solution is considered to be: Hypertonic

Which statement is false for glycogen? It is a disaccharide

Enzymes aid in digestion by? Lowering the energy required to break food apart 

Nonpolar molecules (ie CO2) can diffuse straight through the plasma membrane. True

Which molecules dissolve in water? Hydrophilic

What would be a disturbance for body temperature homeostasis? Falling into a frozen lake

Which of these statements about cell membranes is false? They are completely permeable to all substances

The state in which a living organism maintains a stable internal condition is termed: Homeostasis

Which molecule provide structural support for the plasma membrane? Cholesterol