WGU C190 INTRO TO BIOLOGY
QUESTIONS AND ANSWERS
1.A SUBATOMIC PARTICLE HAS A NEGATIVE CHARGE AND IS FOUND IN
A SHELL OF THE ATOM. WHAT IS THE PARTICLE?
Answer AN ELECTRON
2.MALE PEACOCKS COMPETE WITH ONE ANOTHER TO MATE FEMALE
PEA- COCKS. MALES WITH MORE COLORFUL TAIL FEATHERS ATTRACT
FEMALE MATES AT A HIGHER RATE THAN THOSE W/O. THEREFORE
MALE PEA- COCKS HAVE COLORFUL TAIL FEATHERS, WHEREAS
FEMALE PEACOCKS DO NOT. WHAT IS THIS AN EXAMPLE OF?
Answer SEXUAL SELECTION
3.A GARDENER MAINTAINS A SPECIES OF ROSE THAT PRODUCD EITHER
YELLO FLOWERS (THE DOMINANT PHENOTYPE) OR WHITE FLOWERS (
THE RECESSIVE PHENOTYPE). ONE DAY, THE GARDENER OBSERVES
THAT A CROSS BETWEEN TWO YELLOW ROSE BUSHES HAS LED TO A
SINGLE ROSE BUSH WITH ORANGE FLOWERS. WHAT EVOLUTIONARY
MECHANISM IS INVOLVED IN THE CHANGE IN THE GENE POOL OF THIS
SPECIES?
Answer MUTA- TION
4.SOME CELLS NEED TO MAINTAIN A SET OF CENCENTRATIONS OF Na+
AND K+ IONS. THESE CELLS ARE ABLE TO DO THIS WITH THE HELP OF
THE Na/K PUMP, WHICH TRANSPORTS THESE IONS FROM AREAS OF
LOW CONCENTRATION TO AREAS OF HIGH CONCETRATION ( AGAINST
THEIR CONCENTRATION GRADIENT). Na+ IS PUMPED OUT AND K+ IS
PUMPED IN. WHICH TYPE OF MEMBRANE TRANSPORT IS INVOLVED IN
THIS ACTION?
Answer - ACTIVE TRANSPORT
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,5.CHROMOSOMES ARE STRUCTURES THAT CONTAIN HEREDITARY
MATEIRAL THAT WILL BE PASSED FROM ONE GENERATION TO THE
NEXT. ACCORDING TO THIS INFORMATION, WHICH ORGANIC MOLECULE
MUST BE PRESENT IN CHROMOSOMES?
Answer DNA
6.A CELL HAS DIVIDED ITS CHROMOSOMES INTO WO NEW NUCLEI. THE
CYTOSKELETON OF THE CELL IS CURRENTLY PINCHING THE CELL IN
THE MIDDEL TO FROM TWO NEW CELLS. IN WHICH STAGE OF THE CELL
CYCLE IS THIS CELL?
Answer CYTOKENESIS
7.THERE ARE FOUR SPECIES OF WOODPECKERS THAT INHABIT THE
PINE FORESTS IN THE SOUTHEASTERN AREA OF THE U.S. INDIVIDUALS
OF THIS SPECIES UTILIZE MANY OF THE SAME RESOURCES FOR FOOD
AND NESTING. WHICH LEVEL OF ECOLOGICAL ORGANIZATION
DESCRIBES THE RELATIONSHIP AMONG THESE FOUR SPECIES OF
WOODEPECKER?
Answer COM- MUNITY
8.TWO SPECIES OF WOODPECKER INHABIT THE SAME LOBLOLLY PINE
WOODLAND THROUGHOUT THE SOUTHEASTERN U.S. EACH SPECIES RE-
QUIRES RECENTLY DECEASED (BUT STILL STANDING) PINE TREES FOR
REPRODUCTION. THE WOODPECKERS EXCAVATE THEIR NEST CAVITIES
IN
THE DEAD PINE TREES. IN MOST HEALTHY FORESTS THERE ARE GENER-
ALLY NOT ENOUGH DEAD PINE TRESS TO PROVIDE NESTS FOR ALL THE
WOODPECKERS THAT WANT TO BUILD THEM. WHAT IS THE RELATIONSHIP
BETWEEN THESE TWO SPECIES OF WOODPECKER AN EXAMPLE OF?
Answer – COMPETITION
9.WHILE ABROAD, A TRAVELER DRINKS UNCLEAN WATER CONTAINING
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, TAPEWORM CYSTS. THE TAPEWORM ATTACHES TO THE INTESTICAL
WALLS OF THE TRAVELER, ABSORBING NUTRIENTS FROM THE
PARTIALLY DIGEST- ED FOOD. OVER THE NEXT FEW MONTHS, THE
TRAVELER EXPERIENCES ONGOING NAUSEA, LOSS OF APPETITE, AND
WEIGHT LOSS DUE TO THE PRESENCE OF THE TAPEWORM IN HIS
INTESTINES. WHAT IS THE INTERAC- TION BETWEEN THE TAPEWORM
AND THE TRAVELER AND EXMPLE OF?
Answer – PARASITISM
10.WHAT IS THE CHARGE OF A PROTON?
Answer +1
11.A MOLECULAR BONDD RESULTS FROM AN ELECTRON BEING
TRANS- FERRED FROM ONE ATOM TO ANOTHER. WHICH TYPE OF BOND
HOLDS THESE ATOMS TOGETHER?
Answer IONIC
12.WHICH SITUATION DESCRIBES COVALENT BONDING?
Answer AN ATOM SHARES AN ELECTRON WITH ANOTHER ATOM.
13.WHICH ITEM WOULD BE CLASSIFIED AS BIOTIC?
Answer FUNGUS
14.WHICH ITEM IS AN ATOM?
Answer NITROGEN
15.LARGEMOUTH BASS HAVE INTRODUCED INTO PONDA THAT
PREVIOUL- SY DID NOT CONTAIN ANY LARGE, PREDATORY FISH. WHICH
ADAPTATION WOULD HELP THE EXISTING POPULATION OF SMALL, PREY
SPECIES OF FISH AVOID PREDATION FROM THE LARGE MOUTH BASS?
Answer FASTER THAN AVERAGE SWIM SPEED
16.WHICH TWO ACTIVITIES ASSIST IN THE MOVEMENT OF WATER
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QUESTIONS AND ANSWERS
1.A SUBATOMIC PARTICLE HAS A NEGATIVE CHARGE AND IS FOUND IN
A SHELL OF THE ATOM. WHAT IS THE PARTICLE?
Answer AN ELECTRON
2.MALE PEACOCKS COMPETE WITH ONE ANOTHER TO MATE FEMALE
PEA- COCKS. MALES WITH MORE COLORFUL TAIL FEATHERS ATTRACT
FEMALE MATES AT A HIGHER RATE THAN THOSE W/O. THEREFORE
MALE PEA- COCKS HAVE COLORFUL TAIL FEATHERS, WHEREAS
FEMALE PEACOCKS DO NOT. WHAT IS THIS AN EXAMPLE OF?
Answer SEXUAL SELECTION
3.A GARDENER MAINTAINS A SPECIES OF ROSE THAT PRODUCD EITHER
YELLO FLOWERS (THE DOMINANT PHENOTYPE) OR WHITE FLOWERS (
THE RECESSIVE PHENOTYPE). ONE DAY, THE GARDENER OBSERVES
THAT A CROSS BETWEEN TWO YELLOW ROSE BUSHES HAS LED TO A
SINGLE ROSE BUSH WITH ORANGE FLOWERS. WHAT EVOLUTIONARY
MECHANISM IS INVOLVED IN THE CHANGE IN THE GENE POOL OF THIS
SPECIES?
Answer MUTA- TION
4.SOME CELLS NEED TO MAINTAIN A SET OF CENCENTRATIONS OF Na+
AND K+ IONS. THESE CELLS ARE ABLE TO DO THIS WITH THE HELP OF
THE Na/K PUMP, WHICH TRANSPORTS THESE IONS FROM AREAS OF
LOW CONCENTRATION TO AREAS OF HIGH CONCETRATION ( AGAINST
THEIR CONCENTRATION GRADIENT). Na+ IS PUMPED OUT AND K+ IS
PUMPED IN. WHICH TYPE OF MEMBRANE TRANSPORT IS INVOLVED IN
THIS ACTION?
Answer - ACTIVE TRANSPORT
1/
16
,5.CHROMOSOMES ARE STRUCTURES THAT CONTAIN HEREDITARY
MATEIRAL THAT WILL BE PASSED FROM ONE GENERATION TO THE
NEXT. ACCORDING TO THIS INFORMATION, WHICH ORGANIC MOLECULE
MUST BE PRESENT IN CHROMOSOMES?
Answer DNA
6.A CELL HAS DIVIDED ITS CHROMOSOMES INTO WO NEW NUCLEI. THE
CYTOSKELETON OF THE CELL IS CURRENTLY PINCHING THE CELL IN
THE MIDDEL TO FROM TWO NEW CELLS. IN WHICH STAGE OF THE CELL
CYCLE IS THIS CELL?
Answer CYTOKENESIS
7.THERE ARE FOUR SPECIES OF WOODPECKERS THAT INHABIT THE
PINE FORESTS IN THE SOUTHEASTERN AREA OF THE U.S. INDIVIDUALS
OF THIS SPECIES UTILIZE MANY OF THE SAME RESOURCES FOR FOOD
AND NESTING. WHICH LEVEL OF ECOLOGICAL ORGANIZATION
DESCRIBES THE RELATIONSHIP AMONG THESE FOUR SPECIES OF
WOODEPECKER?
Answer COM- MUNITY
8.TWO SPECIES OF WOODPECKER INHABIT THE SAME LOBLOLLY PINE
WOODLAND THROUGHOUT THE SOUTHEASTERN U.S. EACH SPECIES RE-
QUIRES RECENTLY DECEASED (BUT STILL STANDING) PINE TREES FOR
REPRODUCTION. THE WOODPECKERS EXCAVATE THEIR NEST CAVITIES
IN
THE DEAD PINE TREES. IN MOST HEALTHY FORESTS THERE ARE GENER-
ALLY NOT ENOUGH DEAD PINE TRESS TO PROVIDE NESTS FOR ALL THE
WOODPECKERS THAT WANT TO BUILD THEM. WHAT IS THE RELATIONSHIP
BETWEEN THESE TWO SPECIES OF WOODPECKER AN EXAMPLE OF?
Answer – COMPETITION
9.WHILE ABROAD, A TRAVELER DRINKS UNCLEAN WATER CONTAINING
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16
, TAPEWORM CYSTS. THE TAPEWORM ATTACHES TO THE INTESTICAL
WALLS OF THE TRAVELER, ABSORBING NUTRIENTS FROM THE
PARTIALLY DIGEST- ED FOOD. OVER THE NEXT FEW MONTHS, THE
TRAVELER EXPERIENCES ONGOING NAUSEA, LOSS OF APPETITE, AND
WEIGHT LOSS DUE TO THE PRESENCE OF THE TAPEWORM IN HIS
INTESTINES. WHAT IS THE INTERAC- TION BETWEEN THE TAPEWORM
AND THE TRAVELER AND EXMPLE OF?
Answer – PARASITISM
10.WHAT IS THE CHARGE OF A PROTON?
Answer +1
11.A MOLECULAR BONDD RESULTS FROM AN ELECTRON BEING
TRANS- FERRED FROM ONE ATOM TO ANOTHER. WHICH TYPE OF BOND
HOLDS THESE ATOMS TOGETHER?
Answer IONIC
12.WHICH SITUATION DESCRIBES COVALENT BONDING?
Answer AN ATOM SHARES AN ELECTRON WITH ANOTHER ATOM.
13.WHICH ITEM WOULD BE CLASSIFIED AS BIOTIC?
Answer FUNGUS
14.WHICH ITEM IS AN ATOM?
Answer NITROGEN
15.LARGEMOUTH BASS HAVE INTRODUCED INTO PONDA THAT
PREVIOUL- SY DID NOT CONTAIN ANY LARGE, PREDATORY FISH. WHICH
ADAPTATION WOULD HELP THE EXISTING POPULATION OF SMALL, PREY
SPECIES OF FISH AVOID PREDATION FROM THE LARGE MOUTH BASS?
Answer FASTER THAN AVERAGE SWIM SPEED
16.WHICH TWO ACTIVITIES ASSIST IN THE MOVEMENT OF WATER
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16
