life
life
physical
earth
100

Which of the following is a part of the process of sexual reproduction?

A.budding 

B.regeneration

C.cloning

D.fertilization

D.fertilization

100

A scientist studied human skin cells as they produced two genetically identical daughter cells from a single parent cell. The scientist mapped the steps as shown.

Which of the following did the scientist map in this scenario?

A.fertilization

B.meiosis

C.crossover

D.mitosis

D.mitosis

100

Which is a source of sound?

A.thermal energy

B.potential energy

C.a vibration

D.a medium

C.a vibration

100

Scientists have discovered a fossil skeleton of a whale-like creature that lived in the early Eocene epoch. The skeleton shows an organism with large fore and hind limbs with distinct toes. Fossil skeletons of closely related species from later periods show organisms lacking hind limbs.


Which conclusion does this observation BEST support?

A.Ancestors of whales may once have been able to walk.

B.Ancestors of whales had fewer bones than modern whales.

C.Whales and their ancestors have always been ocean dwellers.

D.Whales and their ancestors have always been the largest living animals.

A.Ancestors of whales may once have been able to walk.

200

Which of the following is associated with asexual reproduction?

A.the process of meiosis in a fruit fly

B.fertilization of a chicken egg

C.bacteria or fungi replication

D.combining parental DNA during reproduction in a mouse

C.bacteria or fungi replication

200

Which of the following is a typical example of a unicellular organism?

A.earthworm

B.bacteria

C.corn

D.green algae

 

B.bacteria

200

When a blue light is shone on a yellow banana, what color does the banana appear to be?

A.blue

B.yellow

C.green

D.gray/black

D.gray/black

200

Which rock is MOST likely to contain fossil seashells?

A.basalt

B.gneiss

C.granite

D.limestone

D.limestone

300

The gametes of human males and females have the 23 chromosomes. Which BEST describes what happens to the chromosomes when typical male and female gametes combine to produce offspring?

A.The chromosomes change shape.

B.The number of chromosomes doubles.

C.The chromosomes become larger in size.

D.The number of chromosomes reduces by half.

B.The number of chromosomes doubles.

300
In this cell cycle, two daughter cells are formed.  The daughter cells each have two copies of chromosomes. Select all that apply?


A. This process is used to repair damaged tissue.

B. This process is used to create new Salmonella cells.

C. This process is involved in the creation of snake zygotes.

D. This process creates offspring that are genetically different from the parents.  


 

A. This process is used to repair damaged tissue.

B. This process is used to create new Salmonella cells.

300


The chart shows the speed of sound through various materials.

 Material Speed of Sound
 Air (20°C)  344  

Seawater 1531  

Brick 4176  

Steel 6000


Which BEST describes the relationship between the material and the speed of sound as shown in this chart?

A.the denser the material, the faster the speed of sound

B.the denser the material, the slower the speed of sound

C.the more opaque the material, the slower the speed of sound

D.the more transparent the material, the faster the speed of sound

A.in solids and liquids, the denser the material, the faster the speed of sound

Gasses are the opposite.

300

The diagram shows layers of rock, A, B, C, D, and igneous intrusion E.

A, B, C, D, and E MOST likely formed in which sequence?

A.First→  →  →LastDCBEA 

B.First→  →  →LastABCDE

C.First→  →  →LastEDCBA

D.First→  →  →LastAEBCD

A.First→  →  →LastDCBEA

400

Tongue rolling (T) is dominant to non-tongue rolling (t) in humans. What phenotypic ratio is possible for offspring produced between a non-tongue roller (tt) and a heterozygous (Tt) tongue roller?

A.all offspring will be tongue rollers

B.all offspring will be non-tongue rollers

C.1 to 1 ratio of tongue rollers to non-tongue rollers

D.75% will be tongue rollers

C.1 to 1 ratio of tongue rollers to non-tongue rollers

400

Why does the kitten appear to be different from either parent?

A.The kitten did not have the proper nutrition during development.

B.The kitten gets half its traits from both parents, and this creates variety.

C.The kitten has a disease that makes it look different from its parents.

D.The kitten is not fully grown and will soon look identical to one of the parents.

B.The kitten gets half its traits from both parents, and this creates variety.

400

Jim produced several sound waves while playing his guitar. Which diagram shows the sound wave that Jim produced with the longest wavelength?

A.

B.

C.

D.

C.

400

The graph shows the relationship between hillside slope and frequency of debris flows during four winters in the Santa Paula area of Ventura County, California.

A land developer is considering building in the Santa Paula area. Based on the information in the graph, the land developer would want to avoid areas with which of these slopes?

A.0–5°

B.12–18°

C.22–28°

D.32–38

C.22–28°

500

A male fruit fly is homozygous dominant for gray-body color (G) and is crossed with a female fruit fly that is homozygous recessive for ebony-body color (g). What are the probable phenotypes of the offspring?

A.25% gray, 75% ebony

B.50% gray, 50% ebony

C.100% ebony

D.100% gray

D.100% gray

500

Potatoes reproduce by growing sprouts on their surfaces as shown.

When planted, these sprouts grow into new plants. This is an example of

A.seed production.

B.fertilization.

C.pollination.

D.asexual reproduction.

D.asexual reproduction.

500

In 1980, Mount St. Helens erupted with a tremendous force. The explosion was heard approximately 1,000 miles away in Saskatchewan, Canada.


Which BEST explains why the sound waves from the explosion would not be heard 1,000 miles away in outer space?

A.The atmosphere in space is too thick.

B.The matter in space is too cold to vibrate.

C.The molecules in space are very far apart.

D.The radiation from space destroys energy waves.

C.The molecules in space are very far apart.

500

Thousands of fish fossils discovered high in the Rocky Mountains MOST likely indicate that

A.ancient sea levels were once high enough to cover the mountains.

B.a large flood washed the fish up to the tops of the mountains.

C.the mountains were once part of the sea floor that was pushed up by tectonic forces.

D.the fish were inhabitants of an ancient stream that became frozen during the ice ages.

C.the mountains were once part of the sea floor that was pushed up by tectonic forces.

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