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