BIO 110 Exam 1

In the pillbug experiment, how many pillbugs did you need to use to get good information for the experiment?

10

For every one hour spent in the classroom, how many hours are recommended that you spend (doing coursework) outside of the classroom

2-3 hours

A good scientific experiment is reproducible. What does this mean?

Anyone can conduct the same experiment in another lab and expect the same results.

Which of these pairs does not correctly match a carbohydrate with its function? Glycogen is the storage form of energy in animals. Starch is the storage form of energy in plants. Cellulose provides structural support for human hair.Correct Chitin provides an exoskeleton for insects. Starch provides long-term energy.

Cellulose provides structural support for human hair.

Within a single molecule of water, as shown, ____ bonds are formed between oxygen and hydrogen.

Covalent

What should be used to wash the work surface when you are done with your labs?

Dish detergent and warm water

Which of the following is not a description of the cell membrane? It is a fluid structure. It is a rigid structure.Correct It is composed of phospholipid molecules. It is a bilayered structure. It is a mosaic structure.

It is a rigid structure.

The scientist(s) given credit for disproving the idea of spontaneous generation is/are

Louis Pasteur.

Of the following, which statement is false regarding the characteristics of mitochondria? Mitochondria are involved in extracting energy from food. Mitochondria have two membrane layers. Mitochondria carry out photosynthesis.Correct Mitochondria have cristae. Mitochondria have their own DNA.

Mitochondria carry out photosynthesis.

Eukaryotic cells are 10-100 times the size of prokaryotic cells. How do eukaryotic cells resolve the surface-area-to-volume limitations that favor smaller cells?

Organelles keep reactions compartmentalized and concentrated.

Name the three phases of laboratory safety measures.

Preparation, experiment and clean up

The four kingdoms included in the domain Eukarya are

Protista, Fungi, Plantae, and Animalia.

Which step in using the compound light microscope among these choices is done first after selecting which slide you want to view?

Put scanning objective lens in place

How is a control group treated in a scientific experiment?

The control group receives all the same treatments except the experimental variable.

What is the purpose of a control group in scientific experiments?

The control group undergoes standard or no treatment and serves as a baseline for a group receiving an experimental treatment.

In the graph, interpret the data that are shown regarding the response of a large number of infants to vaccination from dangerous rotavirus infection. Which of the hypotheses is NOT supported by these data results?

The new vaccine is ineffective in protecting infants from any rotavirus infection.

The original three components of the cell theory are that all organisms

are made of one or more cells, the cell is the fundamental unit of life, and all cells come from preexisting cells.

In an ionic bond, two atoms both become strongly electronegative and attract each other. atoms attract each other by sharing electrons to fill their valence shells. atoms, having gained or lost electrons, attract one another with opposite charges.Correct two atoms are attracted by partial positive and negative charges. two atoms are attracted by the same charges.

atoms, having gained or lost electrons, attract one another with opposite charges.

Domain Eukarya is the most diverse of the three domains. This domain includes all of the following except

bacteria.

Which of the following food does not contain any lipids? banana Correct cheeze meat vegetable oil French fries

banana

Cilia in eukaryote cells can

be used in eukaryotes to do any of these functions.

What testing agent was used to detect the presence of proteins?

biuret solution

What testing agent did you use to detect the presence of lipids?

brown paper

In the element neon, each atom contains eight electrons in its valence shell. The atoms of neon will be

chemically stable

Homeostasis means that

conditions inside a cell or organism remain within a constant range.

According to the Biology 110 Handbook, the publisher site that contains the SmartBook, Lesson, Quiz, etc. assignments is:

connect

Organisms that obtain energy and nutrients by eating either living or dead organisms are called

consumers

In this diagram, the vertical axis of the graph shows values of "Incidence of Illness" in infants. The varying numbers of infants getting sick with rotavirus represents the

dependent variable of this medical study.

The ability to distinguish fine detail or discriminate between 2 very closely spaced objects is called

resolution

Chloroplasts are not

responsible for cellular respiration.

A structure found in cells of all three domains, prokaryotes and eukaryotes, is the

ribosome

There are two, two-sided dishes in the pillbug experiment. In one dish, you should have placed sand in both sides. In the other dish, you should have placed ______ in one side and ______ in the other.

sand; cornstarch

Saturated fats have long, straight tails of fatty acids, whereas unsaturated fats from vegetables have kinks in their tails due to double bonds. These kinks prevent the fats from packing together as tightly. Hydrogenated vegetable oils, or trans fats, have hydrogens added back to the double bonds and thus behave like

saturated fats

In a covalent bond, atoms

share electrons

Iodine was used to test for the presence of _________.

starch

The Golgi apparatus is not

studded with ribosomes

You collect and measure samples of ice and surrounding liquid water from a stream in the winter. You find that you collected the same number of water molecules in each form. The volume of the ice samples are larger than the liquid water samples. This is a result of

the hydrogen bonds between the water molecules being in a fixed position that increases the volume and decreases the density of the ice.

In most mammals the DNA found in mitochondria is inherited from

the mother only

In a class field trip, you scrape what looks like an organism off of a stream rock. Through the semester, with chemical analysis and electron microscopes, you determine that the cell has DNA, RNA, ribosomes, a cell membrane, and cytoplasm. This helps you determine that

this is an organism with cells having common features with all life.

T or F Cohesion is a property of water in which water molecules tend to stick together

true

T or F The coarse focus knob is used only when focusing with the low power lens.

true

T or F The organelles mitochondria and chloroplasts contain their own DNA and ribosomes.

true

T or F the cell is the basic unit of life

true

In the pillbug experiment, your hypothesis

was related to the environment pillbugs prefer.

What was the "negative control" used in the lipid test?

water

The ______________________ lens further magnifies the image produced by the objective lenses.

ocular (eyepiece)

The total magnification of an image is determined by multiplying the power of the

ocular and objecTive lens

When preparing your experiment for a laboratory exercise, how many substances or conditions should you test at a time?

one

To be considered living, an organism must minimally consist of

one or more cells

A structure, such as a flower in plants, or a liver in animals, consisting of tissues organized to carry out a specific function is a(n)

organ

The group of organic molecule polymers with the most complex and diverse three-dimensional structure is

proteins

In a chemical equation, which components of a chemical reaction are found on the left side of the arrows?

reactants

What is the first step in setting up an experiment in the lab exercises?

read all information and instructions

Cells need increased surface area for diffusion of nutrients and wastes. Cells increase their surface area by aving microscopic extensions of the cell membrane. having a flattened shape. being long and thin. having specialized organelles to move components throughout the cell. All of the answer choices are correct.

All of the answer choices are correct.

Some members of the Archaea domain are often referred to as extremophiles because many live in conditions of extreme temperature. salinity. heat. acidity. All of the answer choices are correct.

All of the answer choices are correct.

Which of the following is an example of a characteristic of life? Energy is needed to build, regulate, and conduct processes of life. Organisms are composed of atoms that make up cells. Organisms have the ability to reproduce, grow, and develop. Organisms maintain internal constancy. All of the answer choices are correct.

All of the answer choices are correct.

Which scientist(s) is/are given credit for making the first recorded observations of microorganisms, such as bacteria and protists, with their microscope?

Antony van Leeuwenhoek

According to the Biology 110 Handbook, this type of Connect assignment is untimed, has unlimited attempts, and the purpose of the assignment is for you to read the chapter or section and check your mastery of the content.

SmartBook

T or F An understanding of cellular biology is helping us find new treatments for many diseases.

True

T or F Most cells are too small to be viewed with the unaided eye.

True

The bond that builds amino acid monomers into protein polymers is

a covalent bond also known as a peptide bond.

If a carbohydrate polymer is limited to two monomer units, such as sucrose made from glucose and fructose, it is called

a disaccharide.

A phospholipid molecule has

a hydrophilic head that is attracted to water.

The three major components in a nucleotide are

a nitrogenous base, a five-carbon sugar, and a phosphate group.

According to the Biology 110 Handbook, photos are required for lab participation. The requirements for most photos include: face/selfie name (first and last) date all are required

all are required

The primary building block (monomer) of proteins is

an amino acid.

T or F All living cells have a cell wall.

false

T or F Proteins store the genetic information of the cell and transmit it to the next generation.

false

T or F The kingdom is the most all-inclusive taxonomic category.

false

What do you do in the hypothesis phase?

formulate a tentative explanation to your question or observation

In living cells, a process by which cells break polymers down into monomers with the addition of water is

hydrolysis

An acid has a value above 7 on the pH scale. is a chemical that takes hydrogen ions from a solution. has a value of 7 on the pH scale. is a chemical that adds hydrogen ions to a solution. All of the answer choices are correct.

is a chemical that adds hydrogen ions to a solution.

Which type of organic compound is used for long-term storage of energy?

lipids

Microscopes make microorganisms appear larger than they are. This apparent increase in size is known as

magnification