MajorCrown5274
1. Fill in the blank: NADH can be _________ to NAD + . Group of…
1. Fill in the blank: NADH can be _________ to NAD+.
Group of answer choices
Oxidized
Reduced
None of the Above
2. Which is true regarding ATP and glycolysis?
Group of answer choices
You do not need to use ATP to complete glycolysis
You need to invest 2 ATP molecules to complete glycolysis
Glycolysis neither uses nor creates ATP
Flag question: Question 4Question 41 pts
3. Glycolysis plus pyruvate metabolism starts with a 6 Carbon (C) sugar and ends with which of the following?
Group of answer choices
One 4C sugar (oxaloacetic acid) and two CO2 molecule
One 2C sugar (Acetyl-COA) and four CO2 molecules
Two 2C sugars (Acetyl-COA) and two CO2 molecules
Flag question: Question 5Question 51 pts
4.Which of the following is the fully oxidized waste released during pyruvate metabolism?
Group of answer choices
NADH
CO2
Acetyl CoA
Flag question: Question 6Question 61 pts
4. In the absence of oxygen, why must pyruvate be converted to lactate if you want to continue making ATP via glycolysis?
Group of answer choices
Pyruvate is toxic
NADH must be converted back to NAD+
You use lactate in the Citric Acid Cycle
Flag question: Question 7Question 71 pts
6.The enzyme Phosphofructokinase (PFK) is the rate limiting step in glycolysis. What is most likely true about the activity of PFK in comparison to the other enzymes used in glycolysis?
Group of answer choices
PFK has a higher speed of reaction than other enzymes in glycolysis, so little of the substrate of PFK builds up
PFK has a lower speed of reaction than other enzymes in glycolysis, so a lot of the substrate of PFK builds up
All enzymes in the glycolysis pathway have the same speed of reaction
Flag question: Question 8Question 81 pts
7.Which of the following processes requires molecular oxygen (O2) DIRECTLY?
Group of answer choices
Glycolysis
Lipid beta oxidation
The Citric Acid Cycle
The Electron Transport Chain
Flag question: Question 9Question 91 pts
8.Where do the 2 carbons added to oxaloacetic acid to form citric acid in the Citric Acid Cycle end up?
Group of answer choices
NADH
Acetyl-CoA
Two molecules of CO2
Flag question: Question 10Question 101 pts
9.In general, which of the following is likely to decrease the rate of cellular respiration?
Group of answer choices
Accumulation of low energy molecules (ADP, NAD+)
Accumulation of high energy molecules (ATP, GTP, NADH)
Nothing regulates the rate of cellular respiration
Flag question: Question 11Question 111 pts
10.What directly causes ATP synthase to produce ATP?
Group of answer choices
NADH oxidation by ATP synthase
H+ ion movement into the mitochondrial matrix
O2 binding to ATP synthase
Flag question: Question 12Question 121 pts
11.Which of the following would eliminate the ability to make ATP through chemiosmosis?
Group of answer choices
Increasing mitochondrial matrix pH
Increasing O2 levels in the mitochondrial matrix
Making mitochondrial matrix pH and cytoplasm pH equal
Flag question: Question 13Question 131 pts
12.Where does the extra carbon dioxide in the venous blood come from?
Group of answer choices
Byproduct of cellular respiration
The air we breathe
The last step of the electron transport chain
Flag question: Question 14Question 141 pts
13.Match the following in terms of relative carbon dioxide levels.
Group of answer choices
Outside Air
[ Choose ] Intermediate Carbon Dioxide Levels Highest Carbon Dioxide Levels Lowest Carbon Dioxide Levels
Blood Entering the lungs
[ Choose ] Intermediate Carbon Dioxide Levels Highest Carbon Dioxide Levels Lowest Carbon Dioxide Levels
Blood leaving the lungs
[ Choose ] Intermediate Carbon Dioxide Levels Highest Carbon Dioxide Levels Lowest Carbon Dioxide Levels
Flag question: Question 15Question 151 pts
14.If you breathe from an air tank that is made up of 10% oxygen (low oxygen) and 0% carbon dioxide, what change in ventilation would you expect?
Group of answer choices
Ventilation would decrease
Ventilation would increase
Ventilation would stay the same
Flag question: Question 16Question 161 pts
15.When you hold your breath, what is the STRONGEST signal to breathe again?
Group of answer choices
Increased blood carbon dioxide (CO2) levels
Decreased blood oxygen levels
Increased blood oxygen levels
Decreased blood pressure
Flag question: Question 17Question 171 pts
16.Which of the following makes the bird lung more efficient at gas exchange than the human lung?
Group of answer choices
One way (unidirectional) air flow
Two way (bidirectional) air flow
More alveoli
Flag question: Question 18Question 181 pts
17.During exhalation, why does air flow out of the lungs?
Group of answer choices
Increased lung volume increases pressure inside the lungs
Decreased lung volume increases pressure inside the lungs
Decreased lung volume decreases pressure inside the lungs
Flag question: Question 19Question 191 pts
18.If your cardiac output is 6 L/min and heart rate is 60 beats/min, what is your stroke volume? Please write your answer with the proper units to receive credit.
Flag question: Question 20Question 201 pts
19.Which chamber of the heart do you expect to be the MOST muscular/pump with the most force?
Group of answer choices
Left ventricle
Left atrium
Right ventricle
Right atrium
Flag question: Question 21Question 211 pts
20.When the baroreflex senses decreased blood pressure, what should happen to normalize blood pressure?
Group of answer choices
Increase heart rate
Decrease heart rate
Increase parasympathetic nervous system activity
Flag question: Question 22Question 221 pts
21.The oxygen-hemoglobin binding curve is shown below in the purple circle line. In which tissue would you expect the least oxygen to be bound to hemoglobin (lowest oxygen saturation of hemoglobin)?
Group of answer choices
Lungs
Exercising Muscle
Oxygen will be bound to hemoglobin similarly in all tissues
Flag question: Question 23Question 231 pts
22.Which of the following tissues have the lowest/most acidic pH?
Group of answer choices
Lungs
Exercising muscle
Muscle at rest
All tissues have the same pH
Flag question: Question 24Question 241 pts
23.A red blood cell has an osmolality of 300 mOsm. It is placed in a beaker with a 100 mOSm solution. Which way will water flow?
Group of answer choices
Into the red blood cell
Out of the red blood cell into the beaker
There will be no net movement of water
Flag question: Question 25Question 251 pts
24.If the freshwater osmolality increases above 250 mOsm (normal osmolality of a frog), what problems will a frog encounter?
Group of answer choices
Dehydration
Swelling of cells because more water enters the frog
Loss of ions to the environment
No effects will be seen on the frog
Flag question: Question 26Question 261 pts
25.Which animals need to have adaptations to retain water so they don’t lose it to their environment?
Group of answer choices
Freshwater Fish
Marine Fish
Both Freshwater and Marine Fish
Flag question: Question 27Question 271 pts
26.If an animal has very concentrated urine under normal circumstances, which form of nitrogenous waste would would that animal use?
Group of answer choices
Ammonia (NH3)
Uric Acid
Urea
Flag question: Question 28Question 281 pts
27.The kidney is an important regulator of blood pH. If the pH in the blood increases, what should the kidney do to normalize pH?
Group of answer choices
Secrete H+ ions into the filtrate
Reabsorb H+ ions into the bloodstream
None of the above
Flag question: Question 29Question 291 pts
28.To make the most concentrated urine possible, what do you need?
Group of answer choices
A long loop of Henle
A short loop of Henle
No loop of Henle
Flag question: Question 30Question 301 pts
29.This image depicts a hypothetical electron transport chain (ETC). It is different from the mitochondrial ETC. Using this image, how many ATP would an NADH be worth?
No new data
