Biology Lab Quizzes

If the length of the bottom line that is drawn on page 9 of your lab manual is 6.6 cm, what is that length in millimeters?

66.0 mm

The prefix "milli" means?

a thousandth

Seeds that farmers plant in their farmland must have of which of the following property?

Living embryo

Which of the following is the equivalent of 55.44 grams?

5.54 x10^7 micrograms

Which of the following tools would you use to accurately measure volume?

graduated cylinder

3 kilometers= ____ millimeter

3.0 x 10^6

How many microliters (uL) are in 0.25 milliliters (mL)?

250 uL

The prefix "nano" means ____.

10^-9

Experimental conditions that investigators try to keep the same within both the experimental and control groups are termed ____.

standardized variable

Which of these statements if false?

The hypothesis should be written as an "If....then" statement.

Choose the test used to detect seed viability?

Tetrazolium

Measurements for which of the following should be plotted on the vertical (y) axis?

dependent variable

8.0 x 10^-3

Fill in the blank of the sentence with the appropriate unit of measurement.
A student created a 200 ___ glucose solution.

nL

A student measured the height of plant stems following treatment of various plants with and without fertilizer. If the student added 30 liters of water containing fertilizer to some of the plants, how many milliliters (mL) of the solution did the student add to the plants?

30,000 mL

Following helps to measure the experimental error in experimentation.

Replication

In a bar graph, the independent variable is ____.

Discrete

Experimental error in scientific research/method refers to the following

Differences in the dependent variable in experimental units that are treated alike

The ____ is obtained by summing all observation and dividing by the total number of observations.

Mean

After putting a list of numbers in numerical order, the ____ is the number which is located in middle of the list of numbers.

Median

The dependent variable is ____.

The factor that is plotted on the y-axis of a graph

Readers find the information needed to reproduce results of a research paper in the following section.

Materials and Methods

What is the Mode of the following dataset?
-5, 6, 8, 8, 12, 17, 25, 32

8

The ____ is the value that appears most frequently in a group of measurements.

Mode

Based on the graph below, energy usage is lowest during which season and time of day?

Spring; Early morning

Large standard deviations in datasets from samples will allow for (cause) the following.

Mask the true treatment differences

Readers find the conclusions of the discoveries of a research paper in the following section.

Discussion

Which of the following measures of central tendency is the most sensitive to outliers?

Mean

Following section explains the main discoveries of the research paper

Discussion

Which of the following statements is FALSE?

The values for the mean and the mode of a data set must be the same

The space between the objective lens and the slide on the stage is known as the____.

Working Distance

Which of the following should only be used when the scanning objective is in place?

Coarse Focus Adjustment Knob

The extent to which image details stand out against a background is known as

Contrast

The term ____ indicates that once a specimen has been focused using the scanning objective, the object will remain in focus when rotating to a higher magnifying objective.

Parfocal

The total magnification when using the low power objective is ____.

100x

Working distance is the ____.

Distance from the bottom of the objective lens to the specimen

Parfocal means ____.

Once an objective lens has been focused, you can rotate to another objective lens, and the image will remain in coarse focus

The arrow labeled (3) is pointing toward what structure in the figure below?

stage

What is the total magnification when using the 10x objective lens?

100x

The total magnification of a specimen using the high power lens is ____.

400x

An increase in magnification causes ____.

A decrease in the depth of field

The center for a field of view should remain as the center for all objective lenses is the definition of ____.

Parcentral

Which of the following is used to raise and lower the stage?

Coarse Adjustments Knob

The 4x objective should ____.

Be used to scan your slide to find the sample of interest

The arrow labeled (2) is pointing toward what structure in the image below?

Objectives

The organism shown in the figure below is classified as a _____.

prokaryote

The ____ provides shape to the cell, protects it from external environment, and regulates passage of materials into and out of the cell.

plasma membrane

The ___ contain enzymes to break down large molecules.

lysosomes

Plant cells and animal cells both contain ___.

I. cell wall

II. mitochondria

III. chloroplasts

IV. ribosomes

II and IV

What is the shape of the organism shown below?

bacillus

A positive test result indicates which of the following?

The substance or molecule being tested for is present within the sample.

Choose what is not a good-enough life- defining characteristic.

Growth

In an animal cell, cytosol can be found _____.

Between cell membrane and nuclear membrane

Ribosomes are synthesized specifically in the following structure.

Nucleolus

These two Domains are prokaryotic

Bacteria and Archaea

Some proteins on the cell membrane were seen helping the movement of some molecules into cell. What is this process?

Facilitated diffusion

When water moves into a cell and presses the cytoplasm against the plant cell wall ___.

turgor pressure occurs

The regulation of the passage of substances into and out of the cell is called _____.

selective permeability

__ is the specific name for the movement of water from a region of higher concentration to a lower concentration.

osmosis

A(n) ___ solution has a greater concentration of solute relative to a second one.

hypertonic

Diffusion ____.

requires a concentration gradient

The process of simple diffusion requires ___.

a concentration gradient

A red blood cell would ___ if placed into a hypotonic solution.

swell in size

A dialysis bag was placed into a beaker containing an unknown solution. Based upon the data shown in the graph below, what can you conclude about the solution in the beaker?

The solution in the beaker is hypotonic to the solution in the dialysis bag

Osmosis is the following.

Movement of water across a membrane

In simple diffusion ______________.

Membrane poses no barrier to molecules crossing it.

During ___ carrier proteins help transport a substance through the biological membrane without the requirement for an input of metabolic energy.

facilitated diffusion

Using the graph below, identify the bag in the experiment that was placed into hypotonic solution?

Bag 3

During the process of diffusion, molecules move from a ____ concentration to an area of ____ concentration.

higher; lower

Which of the following reagents should be used to indicate the presence of starch?

Lugol’s Iodine (IKI solution)

Biuret reagent should be used to indicate the presence of _____.

peptide bonds

Placing an unknown item on a paper bag should reveal if the item is a _____.

lipid

Which of the following is true for glycogen?

All of the above

This structure in animal cell helps move chromosomes during cell division.

Centriole

A protein is comprised of ____.

amino acids

The indicator ____ is used to detect complex carbohydrates.

Lugol’s iodine

A carbohydrate is comprised of _____.

one or more sugar units

The indicator ____ is used to detect simple carbohydrates.

Benedict’s solution

The indicator ____ is used to detect proteins.

Biuret solution

____ catalyze reactions.

enzymes

Enzymes are classified as which type of macromolecule?

I. nucleic acid

Il. protein

Ill. lipid

IV. carbohydrate

II

The tertiary and quaternary structure of an enzyme is determined by __

the primary structure

The amount of product produced per unit time is the definition of __

enzyme efficiency

Enzymes are an example of which type of macromolecules

proteins

Using the graph, wavelength of light is the most absorbed by chlorophylla?

440 nm

Photosynthetic pigments in plants are specifically located in the following.

Thylakoid membrane

Spectrophotometry is the study following.

Interaction between electromagnetic radiation and matter

The fraction of light that passes through the sample and reaches the detector of the spectrophotometer is known as __.

transmittance

What does Beer’s law propose?

Absorbance and concentration are directly proportional

With regard to the absorbance spectrum lab experiment, which of the following served as the dependent variable?

absorbance

In the photosynthesis laboratory experiment, why did the absorbance readings of chlorophyll steadily increase as the wavelengths were increased from 600 to 650 nm?

The wavelengths gradually move toward the ideal color ranges for photosynthesis.

When an enzyme interacts with the substrate, which of the following occurs?

The protein and substrate adjust their shape slightly during binding to facilitate catalysis.

Which of the following best defines the term wavelength?

The distance from the crest of one electromagnetic wave to another.

Which of the following is a green pigment that is found in plants?

chlorophyll

Following is the entire range of electromagnetic radiation.

Electromagnetic spectrum

Denaturing the protein structure of catechol-oxidase will cause a loss of which of the following protein structures?

I. primary

II. secondary

III. tertiary

IV. quaternary

II, III, and IV

Which of the following is used to determine enzyme efficiency?

The amount of product that is produced per unit time.

Which of the following defines a biological catalyst?

A molecule or substance that participates in a reaction in order to increase the rate of that reaction.

__ predicts a linear relationship between the absorbance of the solution and the concentration of the sample.

Beer's law