WGU- INTRO TO BIOLOGY C190

WGU- INTRO TO BIOLOGY C190

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A SUBATOMIC PARTICLE HAS A NEGATIVE CHARGE

AND IS FOUND IN A SHELL OF THE ATOM. WHAT IS THE

PARTICLE?

AN ELECTRON

MALE PEACOCKS COMPETE WITH ONE ANOTHER TO

MATE FEMALE PEACOCKS. MALES WITH MORE

COLORFUL TAIL FEATHERS ATTRACT FEMALE MATES AT

A HIGHER RATE THAN THOSE W/O. THEREFORE MALE

PEACOCKS HAVE COLORFUL TAIL FEATHERS,

WHEREAS FEMALE PEACOCKS DO NOT. WHAT IS THIS

AN EXAMPLE OF?

SEXUAL SELECTION

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?

MUTATION

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?

ACTIVE TRANSPORT

CHROMOSOMES ARE STRUCTURES THAT CONTAIN

HEREDITARY MATEIRAL THAT WILL BE PASSED FROM

ONE GENERATION TO THE NEXT. ACCORDING TO THIS

INFORMATION, WHICH ORGANIC MOLECULE MU ST BE

PRESENT IN CHROMOSOMES ?

DNA

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?

CYTOKENESIS

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?

COMMUNITY

TWO SPECIES OF WOODPECKER INHABIT THE SAME

LOBLOLLY PINE WOODLAND THROUGHOUT THE

SOUTHEASTERN U.S. EACH SPECIES REQUIRES

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

GENERALLY 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?

COMPETITION

WHILE ABROAD, A TRAVELER DRINKS UNCLEAN WATER

CONTAINING TAPEWORM CYSTS. THE TAPEWORM

ATTACHES TO THE INTESTICAL WALLS OF THE

TRAVELER, ABSORBING NUTRIENTS FROM THE

PARTIALLY DIGESTED 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 INTERACTION BETWEEN THE

TAPEWORM AND THE TRAVELER AND EXMPLE OF?

PARASITISM

WHAT IS THE CHARGE OF A PROTON?+1

A MOLECULAR BONDD RESULTS FROM AN ELECTRON

BEING TRANSFERRED FROM ONE ATOM TO ANOTHER.

WHICH TYPE OF BOND HOLDS THESE ATOMS

TOGETHER?

IONIC

WHICH SITUATION DESCRIBES COVALENT BONDING? AN ATOM SHARES AN ELECTRON WITH ANOTHER ATOM.

WHICH ITEM WOULD BE CLASSIFIED AS BIOTIC? FUNGUS

WHICH ITEM IS AN ATOM?NITROGEN

LARGEMOUTH BASS HAVE INTRODUCED INTO PONDA

THAT PREVIOULSY 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?

FASTER THAN AVERAGE SWIM SPEED

WHICH TWO ACTIVITIES ASSIST IN THE MOVEMENT OF

WATER THROUGH ITS CYCLE AND TAKE PLACE IN

LIVING THINGS?

PHOTOSYNTHESIS AND AEROBIC RESPIRATION

PRARIE ECOSYSTEMS ARE COMMON WITHIN

CONTINENTAL INTERIORS IN THE NORTHERN

HEMISPHERE. THESE ECOSYSTEMS HAVE A THICH

NUTRIENT RICH TOP SOIL AND ARE DOMINATED BY

GRASSLANDS AND SHRUBS. WHICH ACTIVITY WOULD

HAVE A NEGATIVE IMPACT ON BIODIVERSITY IN A

PRARIE ECOSYSTEM?

COLLECTING THE RICH TOPSOIL TO SELL IN SURROUNDING CITIES

IN THE HARSH ARTIC TUNDRA, THE SURVIVIAL OF ONE

SPECIES IS OFTEN DEPENDENT ON THE ACTIONS OF

ANOTHER. FOR EXAMPLE, THE ARTIC BUMBLEBEE

POLLINATES THE ARTIC POPPY AND RECEIVES ENERGY

NECTAR IN RETURN. WHICH INTERACTION IS

OCCURING BETWEEN THESE SPECIES?

MUTUALISM

A REMORA ( SUCKERFISH) EATING FOOD ELFT OVER BY

A SHARK IS AN EXAMPLE OF WHICH INTERACTION

BETWEEN SPECIES?

COMMENSALISM

WHICH TYPE OF CELL DIVISION RESULTS IN SEX

CELLS?

MEIOSIS

WHICH CHARACTERISTIC DESCRIBES BOTH MEIOSIS

AND MITOTIS?

SISTER CHROMATIDS SEPARATE

WHAT IS A CHARACTERISTIC OF DNA, BUT NOT RNA? IT'S DIRECTLY COPIED TO FORM PROTEINS

WHICH PATTERN OF INHERITANCE IS DESCRIBED

WHEN A PHENOTYPE RESULTS FROM THE

INTERACTION OF MANY GENES?

POLYGENIC INHERITANCE

A DOG BREEDER MATES TWO BLACK LABRADOR

RETREIVERS DOGS. THE BREEDER IS SURPRISED BY THE

OFFSPRING PRODUCED BY THIS CROSSING. IN

ADDITION TO OFFSPRING WITH BEAUTIFUL BLACK

COATS, THERE ARE DOGS WITH BROWN, GRAY AND

TAN COATS. WHICH FORM OF INHERITANCE IS THIS

AN EXAMPLE OF?

POLYGENIC

WHAT IS THE FUNCTION OF HYSTONES DURING THE S

PHASE?

ORGANIZING AND HELPING TO UNWIND DNA SO THE REPLICATION

ENZYMES CAN ACCESS IT

HOW IS DNA STRUCTURED DURING THE METAPHASE

STAGE OF MITOSIS?

THE CENTROMERE AT THE CENTER KEEPS DNA LINED UP AT THE CELL'S

EQUATOR

WHAT IS TRUE REGARDING TRANSISTION FROM

METAPHASE TO ANAPHASE DURING MITOSIS?

SISTER CHROMATIDS ARE ALIGNED ALONG THE CENTER OF THE CELL AND

THEN PULL APART INTO SEPARATE CHROMATIDS.

SISTER CHROMATIDS ARE BEING SEPARATED AND

MOVING TOWARDS OPPOSITE POLES OF THE CELL.

WHAT STAGE OF MITOSIS IS THIS?

ANAPHASE

A CELL UNDERGOING MEIOSIS IS CURRENTLY

DIVIDING. THE TWO NEW DAUGHTER CELLS WILL BE

HAPLOID, BUT THE DNA THEY CONTAIN IS STILL

REPLICATED. THE HOMOLOGOUS CHROMOSOMES

HAVE SEPARATED AND ARE READY TO START THE

SECOND DIVISION, BUT THEY HAVE NOT YET BEGUN

THE SECOND ROUND OF DIVISION. WHICH STAGE OF

THE CELL CYCLE IS THIS CELL IN?

TELOPHASE I

HOMOLOGOUS PAIRS OF CHROMOSOMES HAVE

SEPARATED INTO TWO CELLS. SISTER CHROMATIDS IN

EACH CELL HAVE NOT YET LINED UP IN THE MIDDLE

OF THE CELL. WHICH STAGE OF THE CELL CYCLE IS

THIS?

PROPHASE II

WHAT IS TRUE OF A EUKARYOTIC CELL?IT CONTAINS MITOCHONDRION

CHOOSE THE TWO SUBSTANCES THAT ARE THE MAIN

COMPONENT S IN THE MOST EUKARYOTIC CELL

MEMBRANES.

LIPIDS AND PROTEINS.

FERMENTATION USES SUGAR IN THE ABSENCE OF

WHICH MOLECULE ?

O2

WHAT IS THE FUNCTION OF FLAGELLUM?LOCOMOTION AND SENSING