A plant has a thick waxy cuticle to prevent moisture loss. The interior of the plant is hollow and is used to store large quantities of water. The leaves of the plant have evolved into sharp spines, which protect the flesh of the plant from water-seeking animals. Which environment is MOST suited to this organism?

A salamander,raised away from water until long after its siblings, will swim every bit as well as them the very first time it is placed in the water. For salamanders, swimming is a(n)

In a given area of the Serengeti National Park, the following distribution of animals occurs.



Which of the following correctly explains the population changes shown in the graph?

Which organelle helps to maintain homeostasis within a multicellular organism through the exchange of materials with other nearby cells?

Plants must use oxygen i n the process of respi ration. Based on this information, which of the following is a valid conclusion?

The organelle indicated by an arrow i n the following diagram contains a pigment responsible for capturing sunlight needed for the process of

Mass extinction is an event i n which many types of living things become extinct at the same time.
Which of the following statements is the MOST LIKELY description of the aftermath of a mass extinction?

Prokaryotic cells differ from eukaryotic cells in that

An animal cell is placed in a solution of distilled water. If left overnight, this cell will

Diffusion takes place

What is the correct order of the stages of mitosis?

Angiosperms, the flowering plants, are the most successful plants on Earth and have dominated the Earth's plant life for the past 65 million years. They can live almost anywhere on land and
do not need to be near standi ng water to reproduce. Which of the following adaptation of angiosperms has allowed them to become fully adapted to life on land?

A cabbage farmer has a five-acre field of cabbage. Each year, his crop is attacked by cabbage eating beetles. To com bat the problem, the farmer sprays his field with a mild pesticide. The pesticide kills 85% of the beetles on his field. I n 1995, the farmer used 25 gallons to kill the beetles; however, by 2005, the farmer needed 40 gallons of pesticide to kill the same percentage of beetles. Why did the farmer need to use more pesticide to kill the same percentage of insects over the ten year period?

The spines of a cactus are modified leaves. The thorn of a rose is a modified branch. What does this suggest about the evolution of these two families of plants?

During meiosis, only one chromosome from each homologue is passed on to the offspring. This helps increase

A microorganism is found i n the li n i ng of the human stomach. It has a flexible cell wall, no organelles and flagella. What is this organism?

The figure below shows the pelvic bones of a sperm whale. What is the BEST description of this structure?

Recall that an ecosystem is the interdependence of plant and animal com munities and the physical environment in which they live. Which of the following is an accurate description of an ecosystem in that it includes all components of an ecosystem?

Which of the following actions will have a positive effect on the natural environment?

Consider an energy pyramid that has four trophic levels; as shown in the figure below.

What is the correct ordering of the four organisms pictured from the lowest trophic level to the top trophic level?

Which of the following accurately illustrates active transport?
SB4b DOK 2.

The illustration BEST shows

An environment has cold, harsh winters with temperatures often far below freezing and cool summers with temperatures just above 45 °F. This environment receives a moderate amount of precipitation.

Which organism would MOST LIKELY live in this environment?

In biological terms, what does succession mean?

Industrial emissions of nitrogen oxides and sulfur dioxides eventually result in all of the following except

The ancestors of pol ar bears became separated from brown bears when they moved from the  main land to the Arctic ice. The traits selected in the Arctic ice population were different than the traits selected in the land population. Eventually, the two populations could no longer interbreed. Today, we call the descendants of the Arctic ice population "polar bears" and the descendants of the main land population "brown bears." What pattern of evolution is described?

Change is to evolution as lack of change is to

ATP stands for

Which property of water allows many different substances to be dissolved?

Sweating is a process by which excess water and salts and a small amount of urea are removed from the human body. Sweating involves the skin and the excretory system. This ability of an organism to maintain a stable internal environment is called

Look at the picture and classification key below.


According to the classification key, to which genus and species does this member of the family Canidae belong?

Around 60% of electricity produced in the United States is produced by burning coal or natural gas. The combustion of these fossil fuels does NOT lead to which consequence below?

A unicellular organism reproduces asexually through binary fission. If the parent cell contains 28 chromosomes, how many chromosomes are contained within the daughter cell?

Which cell is defined as not having a true nucleus?

The equation below summarizes what biological process?

Organism Y has an internal salt concentration of 3g/L. Solution A has a salt concentration of 5g/l. What will MOST LIKELY happen to the organism if it is placed in solution A?

Which two nutrient cycles are MOST directly impacted by the fertilizers used i n large- scale agricultural?

9.

A mother is homozygous recessive for a trait. The father is homozygous dominant for the same trait. What are the genotypes of the offspring for that trait?

A species of bird lives i n a canyon. This bird is reproductively isolated from other bird species i n the area. The males of this type of bird species produce colorful red and blue iridescent feathers. During warmer years (greater than 78°F), more food is available and males can produce more vivid coloration. Females will on ly mate with males that have vivid coloration. During the warmer years, there are more successful breeding pairs of birds and more offspring. The graph below summarizes the number of offspring born each year.

If the average breeding season temperature is greater than 80 °F for the next five years, what trend(s) will be observed?

The DNA strand below is one half of a complementary pair.
TACCCATTCGAT
Which of the following correctly shows the complementary DNA strands with the duplication mutation?

The snowshoe rabbit is a primary consumer. I n summer, it feeds on plants like grass, ferns, and leaves; i n winter, it eats twigs, bark from trees, and buds from flowers and plants. The fox is both a secondary consumer and an omnivore, eating rabbits and other small prey, as well as a wide variety of vegetation. During the summer months, the rabbit has a brown coat to camouflage with the forest floor. Then, during the winter months, the rabbit grows a white coat to camouflage with the snow. This chromatic camouflage h ides it from the fox. If unusually warm winter conditions cause premature melting of the snow, what would you expect to happen to the rabbit population?

In some fruit flies, the allele for having black eyes (B) is dominant to the allele for having red eyes (b). A scientist mated a batch of fruit flies with genotypes as shown in the Punnett Square. What is the probability that the offspring will be born with red eyes?

The DNA code eventually directs the cell to manufacture

What allows you to draw on your observations of specific events to hypothesize a general trend? Select the best term:

Which of the following statements about mutations is NOT true?

What ratio BEST describes the growth of plant A?

The variable that tests whether the hypothesis is valid or not is called the

Differences that exist among members of the same species are known as

Bacteria in habit the intestines of cows. and both benefit from the relationship. Cows eat plants but cannot digest the cellulose. The bacteria derive their nutrition from the plants the cows eat and make available nutrients for the cow by breaking down the plant cellulose. What symbiotic interaction is illustrated by the cows and bacteria?

A raisin was left in a solution overnight and was swollen by morning. The solution that the raisin was placed in was

Enzymes are one kind of protein. What are proteins made up of ?

Homeostasis is the term for the relatively stable internal environment maintained by an organism. During physical exertion, animals begin to res pi re (breathe) heavily. What is the purpose of the heavy breathing?

Scientific studies have shown that a mutation in gene p53 is present i n cancerous skin tumors. It has also been shown that consistent exposure to UV radiation or high levels of UV radiation is associated with occurrences of mutations i n gene p53 of skin cells. Why is it that a mother who had the mutation in gene p53 and had skin cancer and a mother who did not have either the mutation in gene p53 or skin cancer both had offspring that did not have the p53 mutation?

The cellular component indicated by the arrow is

One important way to control the spread of viruses is through

The message of the DNA code instructs the cell to build which biomolecule listed below?

The main function of lipids with in a cell is to