Bio 113 final first half
The base unit of links in the metric system/SI system is the meter. Which of the following US/imperial units of length is the meter closest to?
1 yard
Matching
0.001 meter= 1 millimeter 0.515 meters =0.000515 kilometers 1 meter =1000 millimeter 0.015 meters = 15 millimeters 0.01 meters = 1 centimeter
Assume you drink 25 mL of soda out of a 1 liter soda bottle. How many liters would you have left?
0.75
In the metric system, what is the meaning of "mili"?
1/1000
What is the boiling point of water on a Celsius scale
100 degrees
How many cubic centimeters (cm3) are there in 1 liter
1000cm3
Which objective lens requires oil to be applied?
100X
The magnification in the ocular lens is
10x
You step on the scale at the doctors office and it shows the number of kilograms: 75 what's your weight in pounds?
165
What is the boiling point of water on the Fahrenheit scale
212 degrees
What is the freezing temperature on a Fahrenheit scale
32 degrees
What is the normal body temperature on the Celsius scale
37 degrees
If a specimen was viewed using a 40 X objective lens and a 10 X oculars, What would be the total magnification?
400 X
F=(C*1.8)+32
95
What is the normal body temperature on the Fahrenheit scale?
98.6 degrees
You collect two different leaves and measure them, but you accidentally use different sides of the same ruler. One measured 3 in. Which is longer: A centimeter leaf Inch leaf
A Inch leaf
When preparing a wet mount specimen for viewing, the specimen should be covered with
A cover slip
A recipe says you need 2 cups of water. How many milliliters of water do you need?
About 480 mL
The biuret test would indicate a positive result for proteins in which of the following solutions?
Albumin solution
You decide to test a sample of glucose using all the test from this lab which of the following test reagent would produce a positive result
Benedict's reagent
Which of the following test requires heating prior to observing results
Benedicts test
Which of the following are functions of the proteins
Catalytic ( enzymatic) activity
Which of the following are functions of carbohydrates
Catalytic activity and short term energy storage structural support
Post lab 4
Chemical composition
The blank cause of the stage to move upward and downward
Coarse adjustment knob
The arrow is indicating that outer of two adjustment knobs here, and that is just knob knob is referred to as the
Coarse focus adjustment
Human catalyst has an optimum temperature of 37°C. Increasing the temperature about 30° above the optimum range will
Continue to increase the rate of activity, cause abrupt decrease in the rate of activity and not affect the rate of activity
Staining cells such that the color is different from the background enhances there?
Contrast
Biuret reagent contains blank ions which react with peptide bond under the alkaline conditions of the reagent and produce the color change associated with the present protein
Copper
When you boil an egg ( albumin is protein)
Denatured the protein
Benedict's reagent The color change occurs is considered the
Dependent variable
When graphing the results of an experiment, which variable would you typically place on the Y axis ( vertical axis) of the graph?
Dependent variable
In the metric system exercise for length, you measured the blank of three circles
Diameter
Imagine that you wish to compare two different diets that will be fed to tadpoles raise in a lab. One diet is meat-based fish food and the other is traditional diet boiled lettuce you want to see if the meat-based Will be associated with an increase in the average weight of the tadpoles. In your experiment you will keep all other factors, such as temple density per pan, temperature, pH the amount of food the same. The only difference between your control and the experiment group is the type of food the tadpole receives. What is the independent variable for the tadpoles diet?
Diet
Imagine that you are testing samples for protein, and you test: Mystery sample A Mystery sample B Distilled water Which one of these is your negative control?
Distilled water
To convert a smaller unit of measure to a large one ( milligrams to grams for example you would blank a factor
Divide by
A good experimental design will have as many independent/experimental variables as possible
False
It's impossible to ever see any organelles (like the nucleus) Of a cell with a brightfield/light microscope
False
Using a higher power(greater magnification) Objective lens reduces the field of view
False
When you switch to a higher magnification objective lenses, this will typically necessitate adjustment of the
Fine focus
When you measured the mass of table salt (sodium chloride) in the experiment, what unit did you use?
Grams
Placed the four phases of the scientific method in order
HEAR
Post lab 5
How enzymes work
Someone observed that one neighbors roses are not growing as well as the other neighbors. They propose that this might be due to the different amounts of fertilizer applied to the plants. The proposed exclamation would be considered a:
Hypothesis
Displacement can be used to measure the volume of irregularly shaped objects. Starting with a volume of 20 mL of water in a graduated cylinder, you add object A and the new volume is 24 mL Starting with the volume of 30 mL of water in a graduated cylinder, you add object B and the new volume is 35 mL Starting with a volume of 40 mL of water in a graduated cylinder you add an object C and the new volume is 43 mL Which object has the greatest placement?
Object B
A friend of yours ran a 10K last weekend, and brags that this is actually a longer and more impressive race than the half marathon you recently completed ( 13.1 miles) He is ___________________ because 10 km =————— miles
Incorrect, 6.2
An increase in enzyme or substrate concentration will blank (as long as neither one is already binding as much of the other as it possibly could)
Increase the rate of reaction
Using oil immerse is useful because
Increases resolution
Why is it most important to use to tare function when weighing an object placed in a beaker?
It allows you to weigh the object and disregard the beaker
Which group of molecules are insoluble in water
Lipids
While testing for emulsifier, One of the test tubes showed a layer of oil sitting on top of the water. What property of lipid causes this to occur
Lipids are at nonpolar and so do not mix with polar water molecules
The base unit of fluid volume in the metric system is the
Liter
The coarse adjustment knobs on the microscope
Locates to focus plane
A meniscus is any curved upper surface and a fluid solution. When that fluid is water, the middle of the curve( against the wall of the vessel, such as a graduated cylinder). This is known as a "concave" meniscus, and it is caused by adhesion.
Lower
A change in what components of the microscopy influences The apparent size of the objects being viewed?
Magnification
The lenses of a brightfield microscope are responsible for the blank of the object you are viewing
Magnification
Which of the following quality factors is usually expressed in a number such as 40 X?
Magnification
How often can catalase molecule be used to hydrolyzed hydrogen peroxide
Many times
In this lab we measured catalase activity by what
Measuring the formation of oxygen gas
In the length unit exercise, what tool did you use to measure the circles?
Metric ruler
Which metric unit is the most appropriate for expressing the size of cells?
Micrometer
Post lab 3
Microscopy
In your brown paper bag experiment, blank produced a fate (but still visible) residue, indicating that it had some lipid content ( but not as much as pure oil)
Milk
Iodine test yellow Biuret test blue Benedict's test blue Brown paper bag test invisible
None are presented
In the virtual lab demo, they talked about the four phases of the scientific method. This omits a part which is typically considered the true first step of the scientific method, which comes before hypothesis what is this step?
Observation
The arrows are pointing to the two eyepieces what is that called
Ocular lenses
A given Enzyme works on
One type of substrate
According to the results of the pill bug experiment
PillBug's tend to prefer Corn starch over stand
What were your methods in the pillbug experiment?
Placed 10 total pill bugs in each chamber ( five on each side) and counted the pill bugs on each side every two minutes
The image shows a biuret test for protein is it positive or negative shows Purple
Positive
This image shows Benedict's test for reducing sugar is it negative shows red
Positive
In the metric system, the blank describes the relationship of each unit to the base unit
Prefix
Iodine test yellow Biuret test Purple Benedict's test red Brown paper bag test invisible
Protein and simple sugars
Enzymes are
Proteins
Amylase is it in some, which means it is a type of blank Amylase hydrolyzes the pond in starch ( a polysaccharid) which breaks the starch in the small pieces specifically
Proteins/monosaccharides and disaccharides
When you're testing a sample for simple sugars, which of these colors indicates the highest concentration?
Red
The primary function of an enzyme or any biological catalyst
Reduce the activation energy
What does the "Tare" Button on the scale do?
Resets the scale to zero ( even if something is resting on the scale)
Which of the following is defined as the ability to distinguish fine detail?
Resolution
In the pill bug experiment the substance used as the control was
Sand
In order to come to reliable conclusion about the pill bug Preferences you need to use the
Scientific method
Post lab 1
Scientific method
The two not a curves on the figure illustrates that
Temperature ranges are not the same for all enzyme activity
Iodine test Purple/black Biuret test Purple Benedict's test blue Brown paper bag test invisible
Starch and protein
The positive control in the iodine test was
Starch solution
Before you can begin a scientific experiment you should
State the hypothesis and decide on a strategy
Which of the following are functions of lipids
Storage of energy
Some students consume large amount of coffee and so-called energy drinks to help them stay alert when studying. You notice that many who engage in this practice team to do poorly on exams. Suppose you want to investigate the relationship between caffeine consumption and the exam performance. Which of the following statements would be an appropriate hypothesis?
Students who consume large amount of caffeine while studying will have a lower scores than those who consume less caffeine.
Which of the following balance to the active site of an enzyme
Substrate
Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab one is meat-based fish food, and the other is traditional diet of boiled lettuce. Do you want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. In your experiment you will keep all factors the same, such as tear pull density per pan temperature, pH and the amount of food the same the only difference between your control in the experiment group type is The type of food the tadpoles receive. Which is a good hypothesis for the tadpole experiment?
Tadpoles will be larger if fed a meat-based diet
Post lab 2
The metric system
Why do we use the metric system?
The metric system/SI is more accurate, the units in the metric system/SI are easily converted because it is a base of 10 systems just move the decimal point
Enzymes have which of the following characteristics
They are proteins and they are used up during the reaction and they are inorganic molecules
If you wanted to test whether or not a particular pain reliever was effective in the general population, you would need to design an experiment with an experimental group and a control group. What should the only difference between these two groups?
Treatment: the experimental group should get the pain reliever, and the control group should get a placebo
Some cells and other biological components can be visualized reasonably well with the Brightfield/light microscope which one of these would typically require an electron microscope to see
Virus
When you performed the brown paper bag test after applying the samples to the paper squares you
Waited 15 minutes for the sample to dry
