NUT 10 Lecture Notes - Pencil, Scantron Corporation, Electrical Contacts

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Test Form A

Name:____________________

ID#:______________________

NAME____________________________________ Exam #

(LAST name, FIRST name)

(score from p. 7-10) (record on scantron)

Your total exam score STUDENT ID NUMBER_________________

is posted on Canvas

NUTRITION 10

PRACTICE MIDTERM EXAM #1

TEST FORM A (RECORD FORM ON SCANTRON)

INSTRUCTIONS: Please read carefully.

PRINT your name and student ID number on the top of this and all pages.

Use the SCANTRON TEST FORM UCD 2000 to record your answers to all questions. On the

SCANTRON print your name on the right and your student ID number in the space provided. Fill in your

student ID number (9 digits). AT THE BOTTOM OF THE SCANTRON - RECORD TEST COLOR, and

EXAM #. ALSO FILL IN CORRESPONDING BUBBLE FOR TEST FORM (MIDDLE OF SCANTRON).

Each question has one and only one correct best answer. Fill in each appropriate answer space

completely and accurately with a Number 2 pencil. An error will be scored for an incorrect answer, for absence

of an answer, or for more than one answer to a question. Be sure to erase completely when changing an answer.

For each multiple choice question, select the correct (best) answer and fill in the corresponding (A-E) space.

DO NOT bend, fold, or mutilate the SCANTRON. FOR QUESTIONS 34-41 YOU MUST SHOW YOUR

WORK AND UNITS FOR CREDIT. PRINT YOUR NAME AND ID NUMBER CLEARLY ON PAGES

7-10.

When you have completed the examination, turn in BOTH the SCANTRON and the EXAMINATION

QUESTIONS.

YOUR SET OF EXAMINATION QUESTIONS WILL BE MADE AVAILABLE TO YOU WHEN

THE EXAMINATION SCORES ARE POSTED. BY INDICATING YOUR ANSWERS ON YOUR

QUESTION SET YOU CAN HAVE A RECORD TO CHECK AGAINST THE ANSWER KEY WHICH

WILL BE POSTED. YOUR SCANTRON WILL NOT BE RETURNED TO YOU.

STATEMENT:

By my signature below I affirm that I understand the honor code of the Davis campus, and that my

conduct in this examination has been in accord with it.

______________________________________

STUDENT SIGNATURE

GOOD LUCK!

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Test Form A 2 Name: _____________________________

ID: _______________________________

1. As compared to a smooth surfaced cylinder, the surface area of the small intestine is (choose one) by the

villi and microvilli structure.

a. decreased greatly

b. increased slightly

c. unchanged

d. decreased slightly

e. increased greatly

2. Most of the body water is in which of the following "compartments"?

a. within body cells (intracellular)

b. outside body cells (i.e., blood and the extracellular spaces)

c. approximately equal amounts of body water are in the compartments of a and b above; neither is

greater

d. spinal fluid

3. If you were to inadvertently swallow a candy bar wrapper as you were eating the candy bar, the

wrapper would appear in the:

a. urine

b. stool

c. it would be digested and absorbed into the blood

d. sweat

4. The term “essential” describes a nutrient that the body:

a. cannot make for itself in sufficient quantity or at all

b. must obtain from food

c. cannot be found in food

d. a and b above

e. a and c above

5. The RDA (Recommended Dietary Allowances) for nutrients are generally:

a. the minimum amount that average people need

b. designed to prevent deficiency diseases in half the population

c. designed to be adequate for almost all healthy people

d. more than twice the minimum requirement

e. c and d above

6. Proteins fulfill the following function(s):

a. serve a regulatory role as hormones and enzymes

b. are major components of body structure

c. provide energy in the amount of 4 calories per gram

d. a and c only

e. a, b and c

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Test Form A 3 Name: _____________________________

ID: _______________________________

7. If you were eating little of the non-essential amino acid glycine, your body could make it:

a. if you had a dietary source of nitrogen

b. no glycine could be made regardless since all amino acids must be consumed from the diet.

8. The basic building block of a protein is called a (an)

a. keto acid

b. fatty acid

c. monosaccharide

d. amino acid

e. peptide

9. How many amino acids are considered to be dietarily essential for the human?

a. 7

b. 8

c. 9

d. 11

e. 22

10. A man and woman both weigh 56 kilograms. Who requires more protein expressed in grams/day?

a. woman

b. man, because he most likely has a lower body fat level than the woman

c. they require the same amount

11. Which of the following has the highest relative protein requirement expressed in grams per kg body

weight per day?

a. a 1 year old child weighing 9 kg

b. an adult man weighing 71 kg

c. an adult woman weighing 69 kg

12. Which of the following is/are characteristic(s) of severe protein deficiency in a 1-2 year old child?

a. stunting of growth

b. edema

c. impaired resistance to disease and parasites

d. a and c only

e. a, b, and c above

13. Which of the following factor(s)/condition(s) alter protein needs?

a. pregnancy

b. exercise (vigorous, such as weight lifting or running)

c. injury or illness

d. varied protein sources in the diet

e. a through c above

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Document Summary

Name____________________________________ exam # (record on scantron) (score from p. 7-10) Your total exam score is posted on canvas (last name, first name) Print your name and student id number on the top of this and all pages. Each question has one and only one correct best answer. Use the scantron test form ucd 2000 to record your answers to all questions. Scantron print your name on the right and your student id number in the space provided. Fill in your student id number (9 digits). At the bottom of the scantron - record test color, and. Also fill in corresponding bubble for test form (middle of scantron). completely and accurately with a number 2 pencil. An error will be scored for an incorrect answer, for absence of an answer, or for more than one answer to a question. Be sure to erase completely when changing an answer.

Related Questions

A. COMPLETE THE ANSWER SHEET: write your name, banner id # and the date in the spaces provided on the scantron. All answers must be on the scantron and this exam. B. Read each item carefully; select the word, phrase or expression that best completes the test item. Indicate the answer blackening the appropriate space on your answer sheet. You MUST erase completely to receive credit for an erased item. This AND the scantron must be turned in. All questions are worth 5 points. R = 0.08206 (atm middot L)/(mol middot K) = 8.314 J/(mol middot K) pH = - log[H_3 O^+] pH + pOH = 14 = pK_a + pK_b [OH^-][H_3 O^+] = 10^-14 = K_a times k_b (at least in water, at 25 degree C) pH = pKa + log([base]/[acid]) poH = pK_b + log ([acidy]/[base]) K_p = K_c(RT)^da For a salt that dissociated into a cation with a coefficient of n and an anion with a coefficient of m: Molar Solubility = squareroot K_/n^m^x = - b plusminus squareroot b^2 - 4ac/2a where 0 = ax^2 + bx + c Which of the following solutions would have the second lowest pH? Assume all their concentrations are 0.10 M at 25 degree C. The acid is followed by its K_a value. A) HF, 3.5 times 10^-4 B) HCN, 4.9 times 10^-10 C) HNO_2, 4.6 times 10^-4 D) HCHO_2, 1.8 times 10^-4 E) HClO_2 1.1 times 10^-2 Which of the following are false about systems at equilibrium? A) The rate of the forward and reverse reactions are the same. B) The concentrations of each component are equal. C) The concentrations of each component don't change over time. D Catalysts do not affect the equilibrium. E) This symbol is used in a reaction where an equilibrium is present: - The reaction below has a K_c value of 3.64 times 10^-3. What is the value of K_p for this reaction at 25 degree C? CO_2 (g) C(s, graphite) = 2 CO(g) A) 3.64 times 10^-3 B) 6.09 times 10^-6 C) 8.90 times 10^-2 D) 1.49 times 10^-4 E) 2.17 Express the equilibrium constant K for the reaction in question 3. A) [CO(g)]/[CO_2(g)][C(s)] B) [CO(g)]/[CO_2(g)] C) [CO(g)]^2/[CO_2(g)] [C(s)] D) [CO_2(g)]^2 E) [CO(g)]^2/[CO_2(g)]

Experiment 1 Fermentation by Yeast Experiment Inventory Labware (4) 250 mL Beakers (1) 100 mL Graduated Cylinder (1) Test Tube Rack (5) Fermentation Tubes = (10) Test Tubes (5 plastic and 5 glass; see Figure 4) (1) Measuring Spoon (4) Pipettes (1) Ruler Note: You must provide the materials listed in *red. EXPERIMENT 1: FERMENTATION BY YEAST Yeast cells produce ethanol, C2 H6 O, and carbon dioxide, CO2 , during alcoholic fermentation. In this experiment, you will measure the production of CO2 to determine the rate of fermentation in the presence of different carbohydrates with fermentation tubes. Note: Regular table sugar is sucrose, a disaccharide, which is made up of glucose and fructose. Glucose is a monosaccharide. Figure 4: Fermentation tubes. Note how the smaller, plastic test tube is inverted into the larger glass tube. You will create five fermentation tubes in this experiment. PROCEDURE 1. In this experiment, you will mix yeast with sugar, EqualÂ®, and SplendaÂ®. Before you begin, develop a hypothesis predicting what will happen when the sugar/sweeteners are mixed with yeast. Will fermentation occur? Why or why not? Record your hypothesis in the post-lab questions. 2. Use the permanent marker to label three 250 mL beakers as EqualÂ®, SplendaÂ®, and Sugar. 3. Empty the EqualÂ®, SplendaÂ®, and Sugar packets into the corresponding beakers. 4. Fill the EqualÂ® and SplendaÂ® beakers to the 100 mL mark with warm tap water. 5. Fill the Sugar beaker to the 200 mL mark with warm tap water. 6. Mix each beaker thoroughly by pipetting the solution up and down several times. Use a new pipette to mix each solution. Each beaker now contains a 1% solution. Set these aside for later use. 7. Completely fill one of the smaller plastic tubes with tap water and invert the larger glass tube over it. Push the small tube up into the larger tube until the top connects with the bottom of the inverted tube. Invert the fermentation tube (Figure 4) so that the larger tube is upright (there should be a small bubble at the top of the internal tube). Note: Repeat Step 7 several times as practice. Strive for the smallest bubble possible. When you feel comfortable with this technique, empty the test tube(s) and proceed to Step 8. CAUTION: Do not try to force the plastic test tube into the glass test tube. This might cause your glass test tube to break, causing you injury. If your plastic test tubes do not fit easily, please call eScience Labs for replacement glass tubes. If you are able to set up at least two fermentation tubes, continue with the experiment, but know that you will have to perform steps 12-15 in multiple steps. 8. Use the permanent marker to label the fourth 250 mL beaker as Yeast. 9. Fill this beaker with 175 mL of warm tap water. It should be between 30 and 40o C (warm to the touch). 10.Open the yeast package, and use the measuring spoon to measure and pour 1 tsp. yeast into the beaker. Pipette the solution up and down until all of the yeast is mixed homogenously into the solution. Note: Make sure the yeast solution remains homogenous before each test tube is filled in the proceeding steps. The yeast density is fairly high, and the yeast may settle to the bottom of the beaker if it rests for an extended period of time. 11. Use the permanent marker to label the big glass and small plastic test tubes as 1, 2, 3, 4, and 5. 12.Use the 100 mL graduated cylinder to measure and pour 15 mL of the following solutions into the corresponding small plastic test tubes: Tube 1: 1% Glucose Solution Tube 2: 1% Sucrose Solution Tube 3: 1% EqualÂ® Solution Tube 4: 1% SplendaÂ® Solution Tube 5: 1% Sugar Solution Note: Thoroughly rinse the graduated cylinder between each measurement. 13.Fill the remaining volume in each small tube to the top with the yeast solution. 14.Slide the corresponding larger tube over the small tube and invert it as practiced in Step 7. This will mix the yeast and sugar/sweetener solutions. 15.Place the fermentation tubes in the test tube rack, and use a ruler to measure (in millimeters) the initial air space in the rounded bottom of the internal tube. Record these values in the Table 1. 16.Allow the test tubes to sit in a warm place (approximately 30 Â°C) for two hours. Placement suggestions include: a sunny window sill, atop (not in!) a warm oven heated to approximately 85 Â°C (185 Â°F on an oven setting), or under a very bright (warm) light. 17.At the end of the fermentation period, use your ruler to measure (in millimeters) the final gas height (total air space) in each tube. Record this data in Table 1. 18.Calculate the difference between the initial and final gas height in each tube. Record this data in Table 1.

EXPERIMENT 1: FERMENTATION BY YEAST

Result Tables

Table 1: Yeast Fermentation Data

Tube	Initial Gas Height (mm)	Final Gas Height (mm)	Net Change (mm)
1
2
3
4
5

Post-Lab Questions

Include your hypothesis from Step 1 here. Be sure to include at least one piece of scientific reasoning in your hypothesis to support your predictions.

Did you notice a difference in the rate of respiration between the various sugars? Did the artificial sugar provide a good starting material for fermentation?

Was anaerobic fermentation occurring? How do you know (use scientific reasoning)?

If you observed respiration, identify the gas that was produced. Suggest two methods you could use for positively identifying this gas.

Hypothesize why some of the sugar or sweetener solutions were not metabolized, while others were. Research the chemical formula of Equal^Â® and Splenda^Â® and explain how it would affect yeast respiration.

How do the results of this experiment relate to the role yeast plays in baking?

What would you expect to see if the yeast cell metabolism slowed down? How could this be done?

Indicate sources of error and suggest improvement (for example, what types of controls could be added?).

Lines that form right angles at their point of intersection. A five-sided polygon. A round figure whose surface is at all points equidistant from the center. A geometric figure having three line segments for sides. A quadrilateral where each angle is a right angle. An equilateral parallelogram. The distance around a geometric figure. A segment with end points on the circle. A chord of a circle that contains the center of a circle. A segment joining the center of a circle to a point of the circle. Algebra A extremes B. graph C. numerical order D. range E ranking F. variable G. exponent H algebra A letter that is used in place of a numeral. The branch of mathematics that uses letters, called variables, in places of numerals. The n in X" indicating the number of factors of X. Data in order from smallest to largest or vice-versa. A pictorial representation of data. The two outer terms of a proportion. The difference between the greatest and least numbers in a list of data. Data organized in ascending or descending order. Practical Test Solve each problem below. You may use a piece of scratch paper to work your problems. You do not have to turn in your work sheet. Write only the answer in the space provided for each question. Write the number for six million, four hundred thousand, nine hundred twenty seven. _____________________________________ Robert bought a used automobile for $1, 500.00. If the sales tax is 5%, what will be the total that Robert had to pay for the automobile? __________________ Solve 2/3 + 4/6 ______________ What is the perimeter of a triangle which sides measure 6, 8, and 10 inches? _________________ What would be the radius of a circle with a diameter of 8 inches? _________________ Solve 2x + 3 = 9, x= ____________ What is the area of a rectangle with a width of 12 feet and a length of 10 feet? ____________ Using the fraction 4/6, which number is the denominator? _____________ What percent of one U.S. dollar is $.25? ____________ Tom, Bill, Susan, and Sandy went bowling. Tom's score was 132, Bill's score was 140, Susan's scored 145 and sandy's score was 128. What was the average score of all four bowlers? __________ A dress that sells for $50.00 now has a 10% discount marked on the tag. How much will you save off the regular price of the dress? ____________ Sam bought a pair of socks for $2.95 and a tie for $7.50. He gave the cashier a twenty dollar bill. How much change should Sam receive from the cashier? _____________ A cube measures 3 inches on all of it's sides. What is the volume of the cube in inches? ______________ Canned corn is on sale at the grocery store, three cans for a dollar. Another brand is only $.30 per can, which is the better buy? ____________ Your paycheck each week is $500.00. If you want to save $2,000.00 dollars in one year, how much should you set aside from your paycheck each week? _______________

NUT 10 Lecture Notes - Pencil, Scantron Corporation, Electrical Contacts

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