FInal Biology 110 exam

Table salt dissolves easily in water because: a) water can form covalent linkages with salt b) water is poplar and salt in nonpolar. Non polar compounds are more soluble in polar solvents because they are able to form strong covalent bonds that result in a breaking up of the molecule being dissolved.

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In all organisms, heredity information is encoded within____molecules?

DNA

When glucose and fructose undergo condensation, maltose is produced as the product. True or False

False

lipids high in unsaturated fatty acids tend to be solid at room temperature true or false

False

Homeostatis in living organisms involves processes that:

Maintain a constant internal environment

______is the sum of all chemical processes that occur in a living organism

Metabolism

Cilia and flagella are most directly involved in:

Movement

A disaccharide is composed of two monosaccharides joined by a glycosidic linkage. True or False

True

Systems biology is also known as intergrative biology?

True

The difference between electrically neutral atom and an ion is that a) an ion has an unequal number of protons and electrons, while an atom has an equal number b) an ion has an equal numbers of protons and electron while an atom has an unequal number

a) an ion has an unequal number of protons and electrons, while an atom has an equal number

When tissues organize they form a) an organ b) a nucleus c) an atom d) cell

a) an organ

Which of the following is the most basic level of chemical organization? a) cell b) organ c) atom d) tissue e) organism

a) cell

In an experiment, the control group a) does not contain the variable being tested b) proves the prediction c) disproves the theory

a) does not contain the variable being tested

The ultimate source of genetic variation within a population is: a) mutations in DNA b) adapations of a species to environmental changes c) homeostasis mechanisms that compensate for environmental changes

a) mutations in DNA

Chlorine has seven electrons in its valence shell. The number of electrons it must gain to complete it valence shell is a) one b) two c) three d) seven e) eight

a) one

In a water molecule, because oxygen is more electronegative than hydrogen, the shared electrons are more commonly found around the _____ nucleus than the_____nucleus a) oxygen; hydrogen b)hydrogent: oxygeng

a) oxygen hydrogen

Which of the following represents the pattern of energy flow within an ecosystem? a) producers, consumers decomposers b) decomposers, producers, consumers c) consumers, producers, decomposers d) producers, decomposers consumers

a) producers, consumers decomposers

A hypothesis is: a) tentative explanation b) systematic thought process c) observation d) placebo e) conclusion

a) tentative explanation

Which of the following statements represents a good hypothesis? a) The swimming speed of Artemia increases at higher temperatures b) there is life after death c) since sparrows, robins, hawks and pigeons are all birds and have wings, all birds have wings

a) the swimming speed of artemia increase at higher temperatures

Cell theory, as developed by Schleidan and Schwann, states that all living organisms

are composed of basic units called cells

How many molecules are present in one mole of C6H12O6? a) 1.7x 10 -10 molecules b) 1.3x 10 to the tenth molecules

b) 1.3 x 10 to the tenth molecules

Which of the following elements is NOT responsible for a significant portion of the mass of living organisms? a) O b) S c) H d) C

b) S

Which one of the following is characteristic of asexual, as opposed to sexual, reproduction? a) fusion of egg and sperm b) a cell splitting in half c) genes contributed by two parents d) high degreee of genetic variation e) formation of a fertilzed egg

b) a cell splitting in half

The science of life is: a) taxonomy b) biology c) evolution

b) biology

A chemical reaction in which polymers are synthesized from their building blocks is called a) hydrolysis b)condensation c)oxidation d)reduction e) dissociation

b) condensation

A good hypothesis: a) can be proven to be true b) is falsifiable

b) is falsifiable

All of the members of the same species occupying the same area at the same time constitute: a) individual b) a population c) a community d) ecosystem e) biosphere

b) population

The particular type of element is determined by the number of a) electrons b) protons c)neutrons

b) protons

In a solution which would be present in the least amount? a)solvent b) solute c) water d) both solvent and solute e ) solvent and water

b) solute

The difference between a stable isotope and a radioisotope is that a) the stable isotope emits radiation b)the radioisotope emits radiation c)the stable isotope emits light

b) the radioisotope emits radiation

To what group do I belong? I am neither prokaryotic nor photosynthetic, and I obtain nutrients by secreting digestive enzymes into my environment? a) Bacteria b) Protists c) Fungi

c) Fungi

If atom X contains 14 protons, 13 electrons, 12 neutrons, and atom Y contains 14 protons, 14 electrons and 12 neutrons, then you conclude that a) Y is an ion but X is not b)X and Y both have filled valence shells c) X and Y are atoms of the same element

c) X and Y are atoms of the same element

When a small amount of hydrochloric acid is added to a solution of Na2HPO4 the pH of the solution does not change markedly. The pH also does not change drastically when a small amount of sodium hydroxide is added to the same solution. Based on these observations, the compound Na2HPO is a) able to donate hydrogen atoms to HCL b) able to remove hydrogen ions from OH- of NaOH c) acting as a buffer d) an enzyme facilitating the reaction between HCL and NaOH

c) acting as a buffer

This functional group is weakly basic because it can accept an H+ ion a) hydroxyl b) carbonyl c) amino d) phosphate e) sulfyhydryl

c) amino

An element is defined as a substance that: a) is composed of more than one kind of atom b) is held together by covalent bonds c) cannot be broken into simpler substances by chemical reactions d) cannot burn

c) cannot be broken into simpler substances by chemical reactions

Which statement concerning scientific theory is FALSE? a) it may suggest practical applications b) It predicts new facts c) it is unchangeable

c) it is unchangeable

An organism that produces milk, has fur, and lays eggs is classified as a a) bird b) reptile c) mammal

c) mammal

Similar families of organism are next grouped together in the same: a) class b) kingdom c) order d) genuis

c) order

One of the conclusions drawn from Darwin's theory of evolution is that: a) existing organisms can adapt to environmental changes b) genetic information can pass from organisms by means of DNA c) organisms living today descend with modifications from previously existing forms d) living organisms contain substance produced by cells.

c) organisms living today descend with modifications from previously existing forms

In Darwin's theory of evolution adaptation involves changes in: a) genes b) individuals c) population d) communities e) ecosystem

c) populations

In the deductive approach to scientific though processes we begin_______and make_____. a) premises: observations b) observations; permises c) premises; conclusions

c) premises; conclusions

Which of the following is not characteristic of a good hypothesis? a) it is reasonably consistent with well established facts b)it is capable of being tested c) repeated experimental testing can prove that it was true

c) repeated experimental testing can prove that it was true

The highly polarized nature of compounds containing carboxyl groups can be attributed to the presence of two a) highly electronegative carbon electrons b) highly electropositive carbon atoms c) highly electronegative oxygen atoms

c. highly electronegative atoms

The domain Eukarya includes all of the following except: a) mushroom b) bears c) mosses d) bacteria

d) bacteria

Biological growth involves an increase in a) the number of cells b) the size of individual cells c)the number of gened types in a cell d) both the number and size of cells e) both the number of cells and the number of gene types in a cell

d) both the number and size of cells

Organisms that are sessile as adults a)lack free-swimming larvae b) are exempllified by humans c) carry out amoeboid movement d) do not move from place to place e) lack cilia and flagella

d) do not move from place to place

An atom has six protons and eight neutrons. Its atomic mass is______atomic mass units a) two b)four c)six d)fourteen

d) fourteen

A covalent bond a) forms only between identical atoms b)involves a sharing of only one pair of electrons c)is always polar d) may be polar or non polar depending on the atoms involved

d) may be polar or non polar depending on the atoms involved.

Which of the following is NOT a characteristic of all living organisms? a) adapation to their environment b)reproduction c)response to stimuli d)multicellularity e) metabolism

d) multicellularity

Which of the following terms includes the fewest species of organisms? a) ecosystem b) community c) biosphere d) population e) class

d) population

The chemical behavior of an atom is determined most directly by the a) atomic weight b) atomic number c)number of energy levels d) number of valence electrons

d) the number of valence electrons

Which of the following is not an adaptation of Burchell's zerbas to their environment? a) camouflage b) a unique stomach c) behavioral activities d) high degree of genetic variation e) a sexual reproduction

e) asexual reproduction

Which of these terms is the most inclusive? a) monosaccharide b)starch c) polysaccharide d) disacharride e) carbohydrate

e) carbohydrate

Autotrophs: a) are explified by fungi b)are exemplified by animals c) cannot carry out cellular respiration d) depend on heterotrophs for food e) synthesize complex molecules from CO2 water and energy

e) synthesize complex molecules from CO2 energy and water

A solution having a pH of 8 is slightly acidic. true or false

false

An inorganic compound is one that contains carbon true or false

false

By definition, geometric isomers are mirror images of each other. true or false

false

Specific heat refers to the amount of energy required to change 1 gram of a substance from a liquid phase to the vapor phase. true or false

false

When an organism reproduces asexually, it produces offspring that are genetically variable? true or false

false

an example of an anion is k+ true or false

false

if you observe a cell that contains organelles, then that cell is most likely a prokaryote true or false?

false

the phosphate group is a nonpolar group true or false

false

the two domains of prokaryotes are bacteria and fungi? true or false

false

an atom having a filled valence shell is stable and unreactive true or false

true

when you change your view of reality you are making a paradigm shift? true or false

true

Using the Linnaean system of nomenclature, corn is named Zea mays. In this name, the specific epithet is

mays

The number of electron pairs shared between 2 and 3 pairs in the accompanying figure is

two

If an organism is eukaryotic, then by definition it will:

posses a nucleous

THe representation H-0-H is known as a) a structural formula b) a simplest formula c) a molecular formula d) Lewis Structure

structural formula