question

have a suitable control group

answer

In any experiment, one must be certain to

question

was fed the same ration without the food additive

answer

A biologist wants to test the effectiveness of a new food additive on causing growth in mice. An effective control group would be one that

question

DNA

answer

All organisms possess a genetic system that is baed on

question

homeostasis

answer

All living things are able to maintain stable internal conditions, whether they are unicellular or complex, multicellular organisms. This property is called

question

make observations, develp a hypothesis, make predictions, test, draw, conclusions

answer

Which of the following are in the correct order

question

tissue

answer

A group of similar cells that act as a functional unit are

question

population

answer

A group of organisms of the same species living together is referred to as a(n)

question

All of the above

answer

Which of the following is a property of life

question

chordata

answer

Which one of the following is not considered a kingdom of living organisms

question

organs

answer

In a multicellular organism, different tissues that function together are grouped into

question

plantae

answer

Which kingdow contains photosynthetic multicellular organisms that live on the land

question

population

answer

A group of organisms of the same species living together is referred to as a(n)

question

thought

answer

Choose the property that is not common to all living things

question

ecosystem

answer

A group of species and the physical environment in which they live are called a(n)

question

false

answer

The amount of energy available stays constant as it flows through the econsystem

question

None of these are levels of organization within a cell

answer

Which of the following is not a level of organization within cells

question

Animalia

answer

Which kingdom cotnains nonphotosynthetic multicellular organisms that digest their food internally

question

community

answer

The different populations of all the species in a given area make up a(n)

question

domain

answer

The most inclusive group in taxonomy is a

question

experiment

answer

The test of a hypothesis is called a(n)

question

polarity

answer

What property of water is NOT attributable to hydrogen bonding between water molcules

question

number of protons only

answer

The atomic number of an atom is the

question

hydrogen is more electronegative that oxygen

answer

Which is not correct about water molecules

question

mixtures of different isotopes

answer

Most elements in nature exist as

question

Its effects have been more devastating to the south east that the northeast

answer

Which statement is incorrect about acid rain

question

electrons

answer

The first shell in any atom contains one orbital which contains

question

ionic

answer

When an electron is transferred from one atom to the next and the two atoms are then elctrically atted to one another, the type of bond is a(n) bond

question

potential

answer

Electrons posess energy of positon, also known as energy

question

cohesion

answer

allows water molecules to stick together and form droplets

question

directional

answer

bonds are needed for complex shapes of large organic molecules

question

4;8

answer

The second shell in an atom contains orbitals and holds up to electrons

question

adhesion

answer

Water moving up into a paper towel is attributable to

question

convalent

answer

Which type of chemical bond exits within a water molecule

question

equal to the electrons

answer

In an atom, protons are always

question

8

answer

If an element has atomic number of 6 and a mass number of 18, how many neutrons does it have

question

cohesion

answer

The high surface tension of water that allows some insects to literally walk on water is due to

question

the mumber of protons plus the number of neutrons

answer

The mass number of an atom is the

question

covalent

answer

The type of bond that forms between two atoms when electrons are shared is a(n) bond

question

electrons

answer

The of atoms determine how atoms will react with each other

question

deoxyribose

answer

The sugrar found in DNA is

question

hydrogen

answer

The bonds within the secondary structure of a protein can fold it into coils or sheets

question

primary

answer

When a protein is denatured, which level of protein structure is unaffected

question

phospholipids

answer

Which of the following is the main component of cell membrances

question

CCAATTG

answer

If one strand is CCAATTG on DNA, then the complementary chain is

question

glycogen

answer

Animals store energy in a polymer composed of many glucose molecules called

question

true

answer

Most animal fats are saturated and most plant fats are unsaturated

question

cellulose

answer

Which of the following is not a lipid

question

RNA is a nucleic acid

answer

All of the following are ways RNA differs from DNA except

question

liquids at room temperature

answer

Fats composed of fatty acids that have double bonds in the fatty acids and have fewer than the maximum number of hydrogen atoms are

question

glycogen

answer

The largest carbohydrate from the following lis is

question

cellulose

answer

The carbohydrate that is found in plant cell walls is

question

monosaccharides

answer

The building blocks of carbohydrates are

question

true

answer

A polymer is a molecule consisting of a long chain of similar subunits

question

amino acid sequence

answer

The sequence of nucleotides in DNA specifies the of proteins

question

hydrogen

answer

The bases of the two DNA chains are linked in the middle of the molecule by bonds

question

enzymes

answer

Making and breaking molecules in the body require the aid of to help the reactions proceed

question

proteins

answer

Amino acids are the subunits that make up

question

the main funtion of protein is energy storage

answer

Which is incorrect about proteins

question

movement of water across the cell membrane

answer

Which of the following activites does NOT require cellular energy

question

ribose, 3 phosphates, 1 adenine

answer

Which are the components of an ATP molecule

question

it is a carbohydrate

answer

Which of the following is not true about an enzyme

question

active site

answer

The site on the enzyme surface where the reactant fits is referred to as the

question

the active site of the enzyme so a subtrate cannot bind

answer

A competitive inhibitor interferes with

question

loses a phosphate group

answer

Energy is released from ATP when it

question

that energy can be changed from one form to another, but cannot be created or destoryed

answer

The First Law of Thermodynamics states

question

exergonic

answer

A chemical reaction that releases energy is called

question

three phosphate groups

answer

ATP is composed of a sugar, the organic base adenine, and

question

sun

answer

Energy flows into the bilogical world from the

question

binding site

answer

The site on the reactant that binds to an enzyme is called the

question

cellular respiration

answer

All cells convert the potential energy found in food molecules into ATP through

question

exergonic

answer

Chemical reactions that release energy are called reactions

question

true

answer

Temperature above the optimum denatures most enzymes

question

true

answer

Energy can exist in two state: kinetic energy and potential engery. Responses

question

kinetic energy

answer

Objects that are moving are said to possess

question

chemical reactions

answer

The making and breaking of chemical bonds is called

question

true

answer

Most human enzymes work best with the range of pH 6 to 8

question

activation energy

answer

The energy required to intiate a chemical reaction is called

question

coupled channels

answer

In the sodium-potassium pump, sugars and amino acids, or other molecules, are brought through the membrane along with sodium ions through

question

phospholipids

answer

Sect the membrane molecule that is made up of polar region with two nonpolar fatty acid tails

question

length

answer

Cilia and flagella differ from each other promarily in

question

actin filaments

answer

Which of the following causes a dividing cell to pinch in two by contracting like a purse

question

facilitated diffusion

answer

When molecules move through a cell membrane from an area of greater concentration to an area of lesser concentration by way of a channel protein, it is called

question

exocytosis

answer

When a cytoplasmic vesicle fuses with the plasma membrane, expelling its contents outside the cell, the process is known as

question

protiens embedded in the lipid bilayer do not move

answer

Which is incorrect about the plasma membrane

question

central vacuole

answer

Which of the following is found in plant cells but not animal cells

question

the middle lamella glues the walls of adjacent cells together

answer

Which statement about cell walls is true

question

mitochondria

answer

Oxidative metabolsm takes place in the of the cell

question

endoplasmic reticulum

answer

An extensive system of internal membrances, called the , is where carbohdrates and lipids are manufactured, and proteins are made that will be exported from the cell

question

golgi bodies

answer

function in the collection, packaging, and distribution of molecules made in the cell

question

ribosomes

answer

What structures are found within bacterial cells

question

it would fill with ater and lyse

answer

If a paramecium's contractile vacuole stops working, what might happen to the organism

question

archaea

answer

Which of the following kingdoms are prokaryotes

question

phagocytosis

answer

Which process would enable a white blood cell to ingest a baterium

question

lysosome

answer

One organelle called a , contains enzymes that digest worn out parts of cells

question

pili

answer

Which structure helps pokaryotic cells attach to substrates and aid in the exchange of genetic information between cells

question

the site of ribosome subunit assembly

answer

What is the function of the nucleolus

question

6

answer

How many turns of calvin cycle are needed to make one glucose molecule

question

false

answer

About 25% of the radiant energy from the sun that reaches the earth each day is captured by photosynathesis

question

1% or less

answer

How much of the radiant energy from the sun is incorporated into organic compunds in the process of photosynthesis

question

oxygen

answer

A waste product of the light-dependent reactions is

question

red,blue,green

answer

Plants use and wavelengths of light and reflect the wavelength

question

electromagnetic radiation

answer

The full range of energy in sunlight can best be described as

question

photophosphorylation

answer

The production of ATP in photosynthesis is called

question

water

answer

Most of the atmospheric oxygen occurs as a result of photosynthesis. From which of the following molecules is the oxygen derived

question

ATP

answer

The process of chemiosmosis is for making molecules of

question

rubisco

answer

The most abundant protein on earth is

question

roots of plants

answer

Which of the following does not do photosynthesis

question

photons

answer

light energy arrives at earth in little packets called

question

green wavelengths

answer

A green leaf relects of the visible spectrum

question

is recycled back to the light-dependent reactions

answer

After hydrogens and electrons are stripped from NADPH, NADP

question

glucose and oxygen

answer

The main products of photosynthesis are

question

thylakoids

answer

Chlorophyll pigments are grouped together in the membrances of

question

the light reactions take place in the cytoplasm and the light-independent reactions occur in the chloroplast

answer

Which is incorrect about photosynthesis

question

false

answer

C4 photosynthesis is a form of light-independent reactions for plants in hot climates

question

false

answer

Photosynthesis occurs in all cells of a plant

question

true

answer

A chromosome is a single, long DNA molecule in a compact formation

question

Damage to genes failing to stop cell division

answer

What causes cancer in cells

question

interphase

answer

The G1, S, and G2 phases of the cell cycle are collectively known as

question

G1

answer

If cell division is no longer possible, eukaryotes can arrest the cell cycle. During which stage is this decision made

question

false

answer

DNA replicates during the S phase of metaphase

question

sister chromatids; centromere

answer

Identical copies of each chromosome are called and are joined at the .

question

binary fission

answer

Prokaryotic cells divide by

question

telophase

answer

At the end of , mitosis is complete

question

chromosomes line up on the equatorial plane

answer

During metaphase

question

p53

answer

What cell cycle regulatory protein is a tumor-suppressor protein

question

the network of protein cables that will pull the chromatids to opposit ends of the cell

answer

The spindle is

question

cell growth is assessed at the S checkpoint

answer

The eukaryotic cell cycle is controlled at several points; which of these is not a control point

question

the replication of DNA occurs in one direction around the circle

answer

Which is not correct about the way prokaroytes divide

question

metaphase

answer

During which stage of the cell cycle does the M checkpoint occur

question

an enzyme that adds bases back to the tip of chromosomes every time a cell divides

answer

What is telomerase

question

oxidizes glucose and reduces oxygen

answer

The diploid number of chromosomes in humans is 46. The haploid number is

question

false

answer

Cellular respiration involves the dismantling of food molecules to obtain oxygen

question

Electron transport chain

answer

Which stage of cell respiration makes the majority of ATP

question

Acetyl-CoA joins the Krebs cycle and unites with oxaloacetate forming citrate which forms isocitrate which forms alpha-ketoglutarate which forms succinyl- CoA which forms succinate which forms fumarate which forms malate which forms oxaloacetate

answer

The Krebs cycle occurs in the mitochondria there are nine biochemical reations involved in the Krebs cycle and they are highly ordered. Select the correct order from the following choices. Note these are abbreviated and do not show NAD, ADP, ATP, FAD, or water.

question

cytoplasm; mitochondria

answer

Glycolysis takes place in the , and the Krebs cycle and elctron transport chain take place in the .

question

has been reduced

answer

If an atom gains an electron in a chemical reaction, it is said that the atom

question

absence of oxygen

answer

Under what enviornmental conditions do yeast carry out fermentation

question

glycolysis

answer

The stage of cellular respiration that does not require oxygen is

question

photosynthesis

answer

Which of the following is NOT a catabolic reaction that cells use to get energy from nutrients

question

true

answer

During anaerobic respiration, ATP is produced exclusively by glycolysis

question

both 2 and 3

answer

Common end-products of fermentation include

question

false

answer

In ethanol fermentation, pyruvate is reduced directly and the product is lactate

question

2

answer

How many net ATP are made in glycolysis

question

false

answer

Lactic acid fermentation occurs in muscle fibers and can result in the accumulation of ethanol

question

CO2, ATP NADH, FADH2

answer

Which of the ollowing is(are) products of the Krebs cycle

question

Krebs cycle

answer

Most of the carbon dioxide that is made during aerobic respiration is from

question

cytoplasm

answer

The first stage of cellular respiration takes place in the of a cell

question

pyruvate

answer

is the end product of glycolysis and is the starting material for the Krebs cycle

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