When crossing over takes place, chromosomes:

a. produce new genes

b. decrease in number

c. increase in number

d. exchange genetic information

Reduction division takes place during:

a) mitosis

b) meiosis

Human body cells have 46 chromosomes. How many chromosomes does a human cell that has undergone meiosis have?

a)46

b)23

c)92

Chromosomes form tetrads during:

a. prophase I of meiosis

b. metaphase I of meiosis

c. interphase

d. anaphase II of meiosis

________ is the exchange of genetic material from one chromosome to another.

a. synapsis

b. crossing-over

c. cytokinesis

Nondisjunction can involve:

a. autosomes

b. sex chromosomes

c. homologous chromosomes

d. all of the above

If a characteristic is sex-linked it:

a. occurs most commonly in males

b. occurs only in females

c. can never occur in females

d. is always fat

How many chromosomes are shown in a normal human karyotype?

a. 2

b. 23

c. 44

d. 46

A diploid cell of a person with Down syndrome has:

a. 47 chromosomes

b. 45 chromosomes

c. 22 chromosomes

d. 24 chromosomes

T or F

Sex chromosomes are found at the #23 pair

T or F

Muscular Dystrophy is an example of a sex-linked trait.

T or F

A female is represented with an XY

T or F

A male is represented with XY

True

T or F

Autosomes are body chromosomes

T or F

Autosomes are found at chromosomes #1-23

T or F

The genetic makeup of a male who is colorblind must be X^cY

T or F

A mistake found in a gene is called a karyotype.

T or False

A female who is a carrier of hemophilia is normal for that trait.

T or F

A pedigree may show an abnormal trait within a family.

Which of the following is a nucleotide found in DNA?

a. ribose + phosphate group + thymine

b. ribose + phosphate group + uracil

c. deoxyribose + phosphate group + uracil

d. deoxyribose + phosphate group + cytosine

d. deoxyribose + phosphate group + cytosine

The bases of DNA of a double helix are held together by a

a. RNA enzyme

b. weak oxygen bonding

c. start signals

d. weak hydrogen bonding

Each combination of 3 bases on messenger RNA is a(n) _______.

a. anticodon

b. codon

c. base pair

d. nitrogenous base

RNA contains _____.

a. deoxyribose

b. DNA
c. uracil (u)

d. both a and b

During ___, mRNA picks up the message from DNA.

a. replication

b. transcription

c. translation

The "code unit" for one amino acid is ____.

a. 1 base

b. 2 bases

c. 3 bases

d. 4 bases

 The enzyme responsible for unwinding the DNA double helix is called:

a. polymerase

b. amylase

c. anhydrase

d. helicase

[image]The diagram represents a portion of a(n) _____ molecule.

a. mRNA

b. tRNA
c. DNA

d. protein

[image]The lettered parts of the diagram represents:

a. bases

b. phosphates

c. deoxyribose

d. ribose

[image]The pentagon shaped (5 sided) parts represent:

a. bases

b. phosphates

c. deoxyribose

d. ribose

[image]A connected circle, pentagon, and a lettered part together represent a:

a. nucleotide

b. nucleic acid

c. gene

d. codon

[image]The correct sequence of lettered parts in the missing half of this molecule is:

a. TAGACT

b. AGTCTA

c. TCAGAT

d. GACTCG

[image]If the molecule portion shown were being transcribed, the correct sequence of lettered parts in the new molecule would be:

a. AGUCUA

b. UGTCTU

c. UAGUGA

d. AUCUGA

[image]The highest number of amino acids coded for by the molecule portion shown is:

a. 1

b. 2

c. 3

d. 6

[image]The highest number of RNA codons that the molecule portion allows for is:

a. 1

b. 2

c. 3

d. 6

[image]

In this figure, what is represented by label A?

a. tRNA

b. DNA

c. mRNA

[image]

In this figure, what is represented by label B?

a. tRNA

b. DNA

c. mRNA

[image]

What process is taking place in structure A?

a. replication

b. transcription

c. translation

[image]

What is the structure labeled C?

a. mRNA

b. tRNA

c. DNA

[image]

What will happend to the amino acids labeled G?

a. they will get transcribed by DNA

b. They will be replicated by DNA

c. They will divide

d. They will be picked up by tRNA

[image]

In what part of the cell are all the items found except A?

a. cytoplasm

b. nucleus

c. cell membrane

d. vacuole

[image]

What is the next action for the structure labeled E?

a. It will replicate

b. It will go pick new amino acids

c. It will transcribe DNA

[image]

What substance is being produced in the structure labeled F?

a. protein

b. carbohydrate

c. nucleic acid

d. lipid

Name the organelle in which codons and anticodons get combined.

a. nucleus

b. lysosome

c. ribosome

d. vacuole

The 2 classification categories represented by binomial nomenclature are:

a. phylum and class

b. order and family

c. family and genus

d. genus and species

Of the following, Rana catesbiana is most closely related to:

a. Rana pipiens

b. Felis domesticus

c. Xeropus laevis

d. Homo sapiens

The organism Felis concolor is of the genus____.

a. Anamalia

b. concolor

c. Felis

[image]

To which phylum do each of the organisms belong?

a. Anamalia

b. Chordata

c. Mammalia

d. Carnivora

[image]

Which organism is least similar to the others?

a. Aardwolf

b. Coyote

c. Grey Wolf

d. Blue whale

[image]

What classification groups do the organisms have in common?

a. Kingdom, Phylum, Class

b. Phylum, Class, Order

c. Kingdom, Phylum

d. Family, Genus, Species

[image]

Which organisms are most similar to each other?

a. Aardwolf, Coyote, Grey Wolf

b. Coyote, Blue Whale, Aardwolf

c. Grey wolf, Red Wolf, Coyote

d. Aardwolf, Grey Wolf, Red Wolf

 [image]

What is the scientific name of the Aardwolf?

Proteles cristatus

Which system coordinates the body's response to changes in it's internal and external environments?

a. lymphatic system

b. nervous system

c. excretory system

d. reproductive system

Which of the following is not a function of the Lymphatic/Immune system?

a. helps protect the body from disease

b. eliminates wastes from the body

c. collects fluids lost from blood

d. signals infection

What system does the following functions?: controls growth, development, metabolism

a. nervous

b. endocrine

c. digestive

d. excretory

The ____ system serves a barrier against infection and injury; helps regulate body temperature.

a. integumentary

b. excretory

c. muscular

d. circulatory

Which of the following is not a function of the skeletal system?

a. storing mineral reserves

b. supports the body

c. protects internal organs

d. regulating body temperature

_____ brings blood to the heart.

a. capillaries

b. veins

c. arteries

d. lymph nodes

The skeletal system works very closely with the _____ system to produce voluntary movement.

a. circulatory

b. digestive

c. muscular

d. respiratory

Which system provides oxygen and removes carbon dioxide from the body?

a. lymphatic

b. respiratory

c. muscular

d. endocrine

_______ take blood away from the heart.

a. veins

b. arteries

c. capillaries

b. arteries

In which cell cycle does viral DNA become integrated into the host cell's DNA?

a. lytic

b. lysogenic

c. neither lytic nor lysogenic

d. both lytic and lysogenic

b. lysogenic

HIV is an example of a virus that goes through the _________ cycle.

a. lytic 

b. lysogenic

***REMEMBER MAGIC JOHNSON***

A pathogen is an agent that is

a. beneficial to humans

b. harmful only to plants

c. harmful to living organisms

d. nearly extinct

c. harmful to living organisms

When tested with a Gram stain, Gram-positive bacteria are stained:

a. green

b. yellow

c. pink

d. purple

Viruses that use reverse transcriptase to cause their host cells to transcribe DNA from an RNA template are called:

a. bacteriophages

b. antibodies

c. retroviruses

d. capsoviruses

[image]

Refer to the illustration. Which of the organisms has the shape called bacillus?

a. organism 1

b. organism 2

c. organism 3

d. none of the above

[image]

Refer to the illustration. The shape represented by organism 3 is called:

a. coccus

b. spirillum

c. bacillus

d. filamentous

[image]

Refer to the illustration. Which structure could possibly be made of RNA?

a. structure 2

b. structure 3

c. structure 4

d. structure 5

[image]

Refer to the illustration. Which structure is found outside the cell after the cell is infected?

a. structure 1

b. structure 2

c. structure 3

d. structure 4

Psuedopods are used for:

a. Paramecium conjugation

b. movement by amoebas

c. Euglena reproduction

d. Paramecium mitosis

Euglena is an example of a protist that

a. is both autotrophic and heterotrophic

b. is only a parasitic heterotroph

c. is always autotrophic

d. swims away from light

a. is both autotrophic and heterotrophic

All protists:

a. are parasites

b. have a true nucleus

c. move toward light

d. use flagella to move

[image]

The organims shown in A, moves by means of

__________________

[image]

The organism shown in B, moves by means of

____________

[image]

The organism in C, moves by means of

_____________

A plant is a(an)

a. unicellular prokaryote

b. multicellular prokaryote

c. unicellular eukaryote

d. multicellular eukaryote

Which of the following is NOT a characteristic of all plants?

a. are eukaryotic

b. have cell walls

c. produce seeds

d. are multicellular

Plants can respond to changing environmental conditions by the use of which chemicals?

a. sugars

b. enzymes

c. pigments

d. hormones

[image]

What is the phenomenon that is causing the bean seedling to bend?

a. gravitropism

b. phototropism

c. rapid response

d. leaf abscission

Vascular tissue in plants consists of

a. meristem

b. xylem and phloem

c. parenchyma and collenchyma cells

d. epidermal cells

b. xylem and phloem

A seed plant is anchored in the ground by its

a. stems

b. roots

c. leaves

d. trichomes

The closing of the leaves of a Venus flytrap is called:

a. a stimulus

b. phototropism

c. a rapid response

d. a hormonal response

A carrot is a(an)______________

a. taproot

b. fibrous root

c. monocot

d. extensive root system

Both mosses and ferns produce:

a. seeds

b. fruit

c. flowers

d. spores

[image]

Refer to the diagram. The structure labeled c

a. produces pollen

b. contains sperm cells

c. is the area where pollen lands and sticks

d. contains meristematic tissue

Removing a flowers stigma would initially affect:

a. fertilization

b. seed production

c. pollination

d. seed dispersal

Pollen is produced in a structure called the

a. anther

b. stigma

c. ovary

d. pistil

[image]

Label ___ is the stigma

[image]

Label ___ is the anther.

[image]

Label ____ is the sepal.

[image]

Label ____ is the ovary.

T or F

Phloem transports water.

T or F

Grasses are perennials

True

T or F

Biennials grow only once a year

T or F

Mosses have vascular tissue.

T or F

Monocots have parallel veins in their leaves.

T or F

Sepals release glucose.

T or F

Ferns have no roots.

T or F 

Monocots have 1 cotyledon in their seed.

"Arthopod" means ____.

a. soft-bodied

b. spiny skinned

c. jointed feet

[image]

Refer to the illustration. Which organism in the diagrams captures it's prey using nematocysts?

a. Organism A

b. Organism B

c. Organism C

d. Organsim D

d. Organism D

"Echinoderm" means ____.

a. jointed feet

b. soft bodied

c. spiny-skinned

The exoskeleton of an arthopod is made of_____.

a. chitin

b. lime

c. nitrogen

[image]

Refer to the illustration. Which organism most closely related to a jellyfish?

a. organism A

b. organism B

c. organism C

d. organism D

Most animals have a head that is located at the _____ end of their body and a tail that is located at the _____ end of their body.

a. ventral;dorsal

b. dorsal;ventral

c. anterior;posterior

d. posterior;anterior

An animal is each of the following except:

a. multicellular

b. autotrophic

c. heterotrophic

d. eukaryotic

Organisms that spend their entire adult lives attatched to one spot are said to be

a. sessile

b. heterotrophic

c. flagellated

d. symmetric

WHAT KIND OF SYMMETRY???

[image]

(sponge)

WHAT KIND OF SYMMETRY?

[image]

(SEA ANEMONE)

WHAT KIND OF SYMMETRY???

[image]

(PLANARIA)

WHAT KIND OF SYMMETRY???

[image]

(JELLYFISH)

WHAT KIND OF SYMMETRY??

[image]

(HYDRA)

RADIAL

WHAT KIND OF SYMMETRY???

[image][image]

(FROG)

The notochord in animals (dogs and cats) is an embryotic structure that is replaced by

a. structures in the throat

b. the rib cage

c. the skull

d. the backbone

e. the spinal cord

Tadpoles have fins, gills, and a _____ chambered heart.

a. 1

b. 2

c. 3

d. 4

b. 2

All reptiles except crocodiles have a heart that has:

a. two atria and two ventricles

b. two atria and one partially divided ventricle

c. one atrium and two partially divided ventricles

d. two atria and two partially divided ventricles

Jawless fishes include:

a. lampreys and sharks

b. sharks and rays

c. hagfishes and coelacanths

d. lampreys and hagfishes

Sharks and rays are:

a. lobe-finned fishes

b. jawless fish

c. bony fishes

d. cartilaginous fishes

A birds heart is:

a. one chambered

b. two chambered

c. three chambered

d. four chambered

Reptiles are:

a. ectothermic

b. endothermic

c. ergothermic

d. none of the above