Duplicate of Bio test

Which of the following is NOT an organic molecule?

A group of researchers develop a hypothesis and tested it by designing an experiment.

Which characteristic is not used to distinguish the domains and kingdoms?

Which of the following is attracted to the hydrogen "end" of a water molecule, as depicted in this figure?

Carbon dioxide crosses the plasma membrane by a simple diffusion. the rate of which carbon dioxide enters the cell is

All of the following may influence the rate of simple diffusion across a selectively permeable membrane except

Which of the following is NOT a part of the community shown in the figure below.

Which is the correct sequence of increasing organization

Phosphorus has an atomic number of 15, so what is the distribution of its electrons?

Which of the following results from a transfer of electron(s) between atoms?

Recognition proteins are most important for

The phospholipids that make up the plasma membrane have ___ heads and heads ____tails

A nucleotide is made of a:

The fiber in your diet is actually:

When substances move through a plasma membrane and down gradient of concentration, this is

Imagine that you have isolated a mysterious liquid from a sample of food.

The gases, O2 and CO2 enter or leave a plant cell by

A nucleolus is

Cell membranes do all the following except

Which of the following represents a molecule characterized by polar covalent bonding?

Which process accounts for the movement of solids into some animal cells?

If red blood cells are taken from the body in place in a hypertonic solution, what happens to the cell?

All of the following are scientific principles that underlie scientific inquiry EXCEPT:chapter 1

Suppose the plasma membranes were single layers of phospholipids with heads facing that external environment

The atomic number of an atom is defined as the:

The main difference between an autotroph and a heterotroph is:

Two classes of organic compounds typically provide energy for living systems. Representatives of these two classes are:

Which of the following provides long-term energy storage for plants?

For a cellto survive

Which of these atoms would become inert if it accepted three electrons?

Why are hydrophobic molecules, such as fats and oils unable to dissolve in water solutions?

Milk of magnesia is often used to treat stomach upset. It has a pH of 10. Based on this information, milk of magnesium:

Ribosomes are the site of synthesis of:

Hydrophilic molecules:

The nuclei of eukaryotic cells are characterized by:

Which of the following groups includes carrier in general proteins?

Imagine that 1 milliliter of an experimental drug diluted in a saline

Organisms contain thousands of different proteins composed of ____ different amino acids.

HLD and LDL are different types of cholesterol found in the blood. These ecompounds are:

____ and ____ where the two men who developed the theory of evolution

The formation of ATP in the mitochondria, which is an oxygen dependent reaction, is called:

In which kingdom does a multicellular, eukaryotic, photosynthetic organism belong?

What structure in the membrane causes plasma membranes to resist freezing?

The acronym BSE (mad cow disease) is for

Which of the following is capable of converting light energy into chemical energy?

What is NOT a function of lipids.

What can denature a protein

Simple experiments generally isolate and test one ______ at a time.

Their hydrophilic regions of a membrane protein are most likely to be found

A substance with specific properties that cannot be broken down or converted into another substance is called a(n):

Sodium (Na), atomic number 11, has a tendency to lose an electron in the presence of chlorine.

The burn victim in the picture was treated with bioengineered generated artificial skin that uses skin cells obtain

Another name for the fatal disease Bovine spongiform encephalitis is? (Chapter 3)

What is the function of a plant cell Vacuole?

Which four elements make up approximately 96% of living matter?

The carbohydrate in DNA is:

Water moves through a plant because of the property of:

The four polypeptides that are joined together to make hemoglobin represent which level of protein organization?

Your friend does a belly flop into the pool. the stinging pain he feels is most likely due to the:

Which of the following correctly list organelles that are part of the internal membrane system of eukaryotic cells?

The smallest units that still retain the characteristics of an element are called:

Scientific recommend a diet rich in antioxidants to stay healthy. What occurs at the atomic level to explain this

All of the following are important functions of the cytoskeleton except

If you place a feather on the surface of a bowl of water, the feather remains suspended on the surface due to the:

_____ and _____ are the building blocks of life.

Imagine that you have been hired as a chemist and your first task is to examine a newly discovered atom.

Imagine an artificial cell with a selectively permeable membrane that allows water to pass through but does not allow

Which of the following “buds off” of the golgi complex?

How do molecules such as proteins in RNA enter or exit from the nucleus?

Which of the following biological molecules possess large nonpolar regions, making them insoluble in water?

An example of natural causality is:

All the following are true of all living organisms EXCEPT that they:

Adenosine triphosphate is an example of a(n):

Which of the following is the most dense?

In a neutral solution the concentration of ____.

Large biological molecules are synthesized by removing:

Specialized cell junctions include all of the following except

The "backbone" of a nucleic acid molecule is made of:

A scientific explanation that is tentative and requires more investigation is called A(n):

How does a paramecium survive in freshwater?

You are telling your friends that organic molecules are all made up of carbon backbones with hydrogens.

If a frog egg cell is placed into a hypotonic solution, it will

Solutions that cause water to enter cells by osmosis are called

Phospholipids are:

If sulfur has an atomic number of 16, how many covalent bonds does it from?

The process in which white blood cells engulf bacteria is termed

An atom's nucleus is composed of:

A neutral solution:

Which of the following requires adenosine triphosphate

The element carbon has atomic number 6. Carbon most likely:

Which of the following biological molecules are composed of amino acid subunits?

Iron is an important element in human body cells. If iron has an atomic number of 26, What does this tell you aboutthis

This carbohydrates is estimated to be produced each year at about 1 trillion tons

In reference to diffusion, passive really means

fats and oils are made of:

Examine the pH scale. What is true about the hydrogen ion(H+) concentration in stomach acid, composed to the H+

The atomic number of carbon is 6. A carbon has ___ protons and ___ electrons.

A typical oxygen atom has8protons,8 neutrons, and 8The fundamental fact that makes it an atom of oxygenratherthan atom

Which of these biological molecules contain genetic information?

All cells possess all of the following components except:

What is NOT a protein

One solution has a pH of 2 and another has a pH of 3. What would be the relative difference in ion concentration?

A particular cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane, and mitochondria

The basic unit of life is

Most biological molecules are joined by:

The portion of the cell membrane is responsible for the isolating function of the membrane, while the portion regulates

Which organelle would you expect to be in abundance in the liver of a drug addict?

phospholipids spontaneously form bilayer in an aqueous solution. Why do the heads of the phospholipids point out and the

If you could examined the human body, which of the following combinations of elements would be most common?

In biological membranes, the forceful lipids are arranged in a:

To say that a cell is selectively permeable means

The diffusion of water molecules across a selectively permeable membrane is called

Which of the following BEST explains why a particular atom may not form compounds readily?

The formation of sodium chloride (NaCI) is the result of:

Why type of lipids is most important in biological membrane?

Where is glycogen stored in vertebrate animals?

Aerobic metabolism occurs in the:

What is active transport?

Choose the correct pathway of information flow in the cell

Hydrolysis may be correctly described as the :

Sulfuressential element in human body, and studying its characteristics is important in understanding human physiology.

As shown in this figure, the top triglyceride (a) has __, whereas the bottom triglyceride (b) has ___.

Sorting and modification of proteins is important function of

Which organelle is most abundant in cardiac muscle cells?

Plasma membranes are best described as a:

The human body must maintain a constant pH. in the blood, bicarbonate serves as a(n) _to help maintain the necessary pH.

Lard is a solid fat at room temperature. What does this tell you about the triglycerides in lard?

Which of the following types of membrane proteins are responsible for facilitated diffusion

What prevents your immune system from attacking your own cells?

Mutation can

Enzymes are ____ that orchestrate chemical reactions within the body.

Which of the following does not possess a double membrane?

Molecules assisted by carrier proteins, made cross a selectively permeable membrane by

If you forgot to water your favorite plant, all of the following will occur at a cellular level, except

The organic complexity and organizationofliving organisms dependsonthe periodic capture of energy from the environment.

How does a cell rid itself of defective or malfunctioning organelles?

Which of the following reactions requires the removal of water to form a covalent bond?

Some of the most important molecules that are embedded within the membrane of a cell, such as the molecules that allow

Maltose is made from:

All the following are features of the scientific method EXCEPT:

Which of the following is associated with rough ER?

What is meant by the statement that water has a high specific heat?

The net movement of molecules from a high concentration to a low concentration is best described by which of the follow

Which is a difference between prokaryotes and eukaryoyes?

If a certain atom has a tendency to lose two electrons, this lends itself to the formation of a(n):

Which of the following may possess primary, secondary, testiary, and quaternary structures?

Which molecule is a disaccharide?

Polar covalent bonds form when:

Cells the primarily produce steroid’s hormone, such as testosterone and estrogen, have large quantities of

The hydrogen bond between two water molecules forms because water is:

Which of the following would not be found in a membrane?

In general, which of the following is largely responsible for moving substances across the plasma membrane, communicatin

Which of the following include monosaccharide monomers?

Plastics are found in ___cells

All of the following lipids or lipid components are hydrophobic EXCEPT:

The scientific method includes all the following except:

You drop a handful of salt into a glass of water.

Which pair of organelles is responsible for supplying energy to eukaryotic cells?

What is not considered a property of water.

Cholesterol, testosterone, and estrogen are example of:

A cell from a wheat plant contains all of the following except a:

What is not a feature of a prokaryotic cell?

The main lipids found in cell membrane are

For diffusion to occur, there must be

The Golgi apparatus packages materials into __ for transport or export

Polar molecules:

Atoms or molecules that have gained or lost electrons are called:

Which of the following results from an unequal sharing of electrons between atoms?

Which of the following types of membrane proteins are responsible for conveying external messages, such by a hormone

Radioactive isotopes are biological tools that are often used to:

The chemical bonding properties of an atom are determined most directly by the

A mutation is a:

The cytoplasm of eukaryotic cells contains all of the following, except:

There seems to a consensus among scientists that they are far more material cells in the body than is human

Which of the following could potentially be a free radical?

The compounds in biological membranes, the form a barrier to the movement of materials across the membrane are

After you drink a glass of acidic lemonade, your body's pH does not change.

Which cellular organelle packages enzymes and forms lysosomes?

The formation of ions involves the:

The lowest rate of diffusion of particles in water will occur at

All of the following are components of the modern cell theory, except:

The major histocompatibility complex (MHC) is an example of an

Which of the following is not a function of plastids?

Which of the following is an energy requiring mode of transport, the brain substances into a cell

In a word, "evolution" means:

Which of the following insoluble in water?

What is not considered one of the three types of chemical bonds.

If a substance measures 7 on the pH scale, that substance:

____ are a part of the atom that have the greatest biological interest and influence on a living organism.

The experiments of Francesco Redi:

A basic difference between a prokaryotic cell and a eukaryotic cell is that the prokaryotic cell:

Prokaryotic the are rod shaped are called

Science assumes that natural law (such as the law of gravity)

A cell has a special membrane that is permeable to alcohol but not water. The cell contains 20% alcohol 80% water.

Cells use exocytosis to

The three natural processes that from the basis for evolution are

The part of the atom that has the greatest biological interest and influence is the:

The basic structural unit of chemistry and life are

For an atom to achieve maximum stability and become chemically insert, what must occur?

To test the effect of vitamin D on growth, two groups of rats were raised under identical conditions and fed the same