Chloroplasts are found only in organisms that are able to __

During human fertilization, an egg and sperm cell unite. Which structures in these cells carry the genes that will be transferred to the offspring?

When comparing a plant cell to an animal cell, only the plant cell will contain __.

Most of the hereditary information within the cell is carried in the

A plant's green color is due to the presence of which organelle?

In this plant cell, which cellular structure is responsible for storing food, water, and wastes?

The function of the cell nucleus is to

During mitosis, the doubling of chromosomes ensures that both new cells

What are the smallest units that make up your body called?

What is the primary function of this organelle?

What stage of the cell cycle involves growth and function?

What does meiosis produce?

Which of the following is not part of the cell theory?

The development of the cell theory can be attributed to

What is the function of the part of the cell labeled A?

What is the function of the part of the cell labeled B?

What is the function of the part of the cell labeled D?

The process by which a cell's nucleus divides to form two identical nuclei is called

Place the terms in the order of the simplest level of organization to the most complex.

Human sweat is the direct result of which life functions?

Which gas do animals need to carry out life processes?

Cells ⇒ Tissues ⇒ Organs ⇒ ?

What is the next in this series?

Which level of organization below is the most basic or primary level of organization?

Which of these life processes helps extract energy from food?

Which of these best enables this animal to rid its body of excess heat in a hot desert environment?

The process through which water molecules move across a cell membrane is

Which process produces the carbon dioxide that you exhale?

Which characteristic is used to classify frogs into a different phylum from squid, snails, and jellyfish?

Which of these is the best description of a typical organism in the Plant kingdom?

These animals are grouped together because all of them

Sponges are classified as animals because they cannot

What is the broadest classification level out of the list below?

One characteristic used to place organisms into kingdoms is

Which classification level contains organisms that share the most characteristics?

Which of the following is most likely true to a male and a female mountain lion of the species Felis conolor?

All of the following organisms belong to the phylum cnidarians EXCEPT

Which organism belongs to the echinoderm phylum?

Which plant division is described below?

stay green all year round

produces pine cones

don't lose their needles

Which plant division contains the plants below?

Apple tree

Sunflowers

Cactus

Which plant division contains the plant below?

The equation for photosynthesis is shown. Which of these is required to complete the equation for photosynthesis?

Which process is the foundation for the food web?

Which of the following is produced as a result of photosynthesis?

Plants release oxygen into the air as a result of photosynthesis. Which of these do plants need for photosynthesis?

According to the chart, which set of conditions represents the process of photosynthesis?

Which is a product of cellular respiration?

Which is NOT produced through cellular respiration?

What chemical absorbs light energy which plants use in photosynthesis?

In which plant cell structure does cellular respiration take place?

The first stage of photosynthesis involves-

Most of Earth's ecosystems ultimately get their energy from

What is the role of the Orca in the food chain below?

Which of these is most likely the result of weasels and foxes depending on the same food source?

This picture shows a zebra with two tick birds on its back. The tick birds alert the zebras that predators are near as well as remove and eat ticks found on zebras. What is the primary type of interaction between the tick birds and zebras?

On a small island, scientists observed and graphed changes in wolf and moose populations. From 1965 to 1970, which data pattern did scientists observe?

Which of the following is an example of a decomposer at work in the food web?

Which of the following organisms break down dead material and the substances to the environment?

In the food web shown, which of the following consumers eat only producers?

A tick that feeds on the blood of animals is a

Algae ⇒ Frog ⇒ Snake ⇒ Hawk

The relationship between the algae and the frog may be described as

Which of these could cause a decrease in the number of squirrels in a population?

The loss of which of these would have the least effect on the water cycle?

How are humans classified within a food chain?

Suppose that in a certain area, mice are the main food source for wolves. Based on the graph, in which year would there be the least amount of competition among wolves for food?

In the carbon cycle, the waste product released by animals is

At which level in a food web is the most energy available?

Which of the following describes an interaction in which one organism kills and eats the other?

The island of Guam had no native snake species until the brown tree snake was introduced. What effect did this egg-eating snake have on the native bird populations

Which of these populations is most likely to increase if the number of grasshoppers decreases?

The ermine is a small animal that lives along riverbanks and in forests. During the spring and summer, it grows a brown coat. It sheds the brown coat during the autumn and grows a white one. This change of color in the ermine’s coat allows it to

Because of competition, two similar species cannot occupy exactly the same

Which of the following is an example of a niche?

The type of symbiosis in which both species benefit is

For separate ecosystems to be classified as the same type of biome, they must

A coal-burning facility is constructed in an area containing several pond ecosystems. How will this human activity most likely affect the pond ecosystems?

Black bears roam over large territories. What effect would building shopping centers in these territories have on the bears?

There are harvesting regulations for many fish species that limit the number and size of the fish that may be kept. What is the most likely reason these limits have been placed on harvesting these fish?

The quality of pond water can be determined by identifying the number and types of organisms found living in the water. Which piece of equipment will best help students identify some of these organisms?

Otters have adaptive traits that allow them to survive by eating shellfish and crustaceans. If changes is biotic factors of the ecosystem result in reduced numbers of shellfish and crustaceans, the otters will most likely

Sea anemones are poisonous. However, the clownfish has developed an outer layer of mucus which provides protection from the stinging cells of the sea anemone. The mucus is best described as

A farmer wants to plant a crop that grows well in a marshland environment. In order to produce a good harvest, the most important characteristic this plant should have is the ability to-

Which biome contains large populations of grazing herbivores, few species of birds, and deep, rich soil?

These birds all live in Virginia. One of the bird’s main sources of food is the nectar inside long, trumpet-shaped flowers. A second bird eats mostly rodents. The third bird often is seen pecking into the bark of the local trees to get the insects just inside. Which of the following lists has correctly matched the pictured birds with their diets

When animals hibernate, their heart rate and respiration decrease and they lose consciousness. Why do some animals hibernate

In which biome would you find the most variety of life?

The kangaroo rat is able to get all of the water it needs through its food and, therefore, never needs to drink liquids. This animal has adapted to survive in which biome?

Which of the following is an adaptation that helps an organism live in the desert?

What is a biome?

When a plant grows toward sunlight it is demonstrating

The process by which nutrients build up in a lake or pond causing algal growth is

Which of the following will most likely cause a change in species competition in an area?

White-footed mice having thicker fur than cactus mice is probably influenced most by differences in the

A physical expression of a trait in an organism is known as the

All of these can be inherited by people except

Which of these has been improved by genetic engineering?

During human fertilization, an egg and a sperm cell unit. Which structures in these cells carry the genes that will be transferred to the offspring?

Which type of characteristics can be inherited?

Which of these is due entirely to inheritance in humans?

Ranchers historically have used genetics to produce new varieties of cattle. Buffalo can tolerate both hot and cold temperatures but have meat that is not as tasty and tender as beef. Cattle that are subjected to severe temperature extremes produce meat that is neither tender nor good-tasting. What good qualities might a “beefalo” (cross between cattle and buffalo) possess

Mendel’s early work with pea plants demonstrated a significant genetic discovery. The crossing of homozygous tall pea plants with homozygous short pea plants always resulted in tall plants and demonstrated that tallness in pea plants is a trait that is

Fossils are evidence of living things that were alive many, many years ago and often consist of the skeletons of creatures embedded in rock. Why don’t fossils contain the animal’s soft tissues, as well?

The diagram above shows the changes over time in the horse. Evidence for these changes most likely came from

Changes in DNA are known as mutations and can sometimes produce beneficial changes in populations. A mutant form of the normally light-colored peppered moth is dark colored. The dark-colored moth blends in with soot-covered trees in heavily polluted areas. Why would the dark-colored mutation be beneficial in a polluted area

Many complex genetic experiments have been performed on plants. One of the very successful ones crossed wild wheat with a fungus-resistant wild grass. This ultimately produced a variety of wheat that was resistant to a very destructive parasitic fungus which kills nonresistant plants. Why would such experimentation benefit humans?

What is DNA?

Which of the following is true of the gene's role in inheritance?

What is the percent chance that the offspring will have purple flowers?

Scientists combine evidence from fossils, body structures, early development, and DNA sequences to