its function is to control the activities of the cell

its function is to provide structure and support to the cell

its function is to produce energy aka "powerhouse" of the cell

stores water, wastes, ions and nutrients for the cell

its role is to make proteins or protein synthesis for the cell

its function is to perform photosynthesis to make glucose for the cell

which of the organelle(s) are ONLY found in plant cells?

this layer surrounds the cell and controls what comes in and out of the cell

the series of changes that occur in an area where no soil or organism exits

a unicellular organism that lacks a nucleus and some other cell structures

the process by which plants and other other autotrophs capture and use light energy to make food from carbon dioxide and water

the vascular tissue through which food moves in some plants

an organism's physical appearance or visible traits

the first species to populate an area during succession

the process by which organisms that are best adapted to their environment are most likely to survive and reproduce

Stomata allows gas exchange and epidermal cells has a waterproof layer.  The epidermal and stomata have functions similar to which human body system?

Howea forsterianan and Howea belmoreana are 2 species of trees that do not interbreed even when they grow next to each other. Which evolutionary process failed to occur?

sexual reproduction depends on the production of gametes. Which of these processes produces gametes?

Which 2 body systems work together to provide the cells with constant supply of oxygen while removing carbon dioxide waste products?

the sequence of nitrogenous bases in DNA varies widely. The sequence of the bases in DNA is most important for which of the following?

which of the following functions at the same organizational level as the kidney in the human excretory system?

Which characteristic is shared by an animal cell, a plant cell, a prokaryotic cell and an eukaryotic cell?

Checkpoints occur between the stages of the cell cycle.  If a cell does not meet certain criteria at the end of a stage, it will not move to the next stage. What happens just before the cell enters the G2 stage?

Which group of organelles is directly responsible for the production of new molecules within a cell?

SARS symptoms include fever, headaches and body aches that occur 2-7 days after the infection.  SARS is more serious in older people.  The reproductive cycle of SARS is -

If two organisms belong to the same taxonomic group, they are related.  Similarity at which of these levels indicates the closest relationship?

Which of the following biomolecules typically contains both nitrogen and phosphate?

Which phase is a stage that begins after the chromosomes have moved to opposite poles of the cell?

Which condition is essential for natural selection to result in a new species?

A parrotfish will graze with a rabbitfish to escape predation.  The rabbitfish has venomous spines a the end of its fins and does not benefit from this relationship. Which type of symbiosis is this?

As ecosystems move through the stages of succession, the populations of organisms in them change. Which of the following describes the stage of succession likely to have the most species diversity?

Cells typically respond to DNA damage in three ways: by ceasing to grow and divide until the damage is repaired, by permanently ceasing to grow and divide, or by dying. In 2010 a group of scientists reported that a certain kind of immune reaction can cause DNA damage that leads to a fourth response. DNA damage can turn off genes involved in cell-signaling pathways. Turning off these genes can cause less-mature cells to divide too rapidly, often leading to the development of —

In recent years humans have interfered with the natural balance within deer populations in various ecosystems. The interference includes eliminating predators of the deer. Which of the following statements correctly describes the long-term outcome of this interference?

Organisms can be classified based on homology, which is shared characteristics inherited from a common ancestor. In the past, homologies were based on studies of anatomical structures and patterns of embryonic development. In more recent years, the use of molecular biology techniques has allowed homologies to be compared at the level of nucleotide sequences. Nucleotide sequence comparisons are possible because all organisms share which of the following?

Diatoms are one of the most common types of phytoplankton in marine habitats. Like plants, diatoms contain chlorophyll and produce glucose from which of the following?

Coracias garrulus is a blue bird with an orange-brown back. The offspring of this bird have an effective defense mechanism. The young birds vomit and cover themselves in a foul-smelling orange liquid when they sense a threat by predators. Which two systems alert the young bird to the danger and help produce the vomit it uses as a defense?

Cells can generate as many as 36 to 38 molecules of adenosine triphosphate (ATP) from the metabolism of one molecule of glucose. Which cellular process results in this amount of ATP production?

At birth Himalayan rabbits are usually white over their entire bodies. But when parts of their bodies reach temperatures below 35°C, a pigment that causes these parts to turn black is produced. Which of the following is most likely the cause of this phenomenon?

The differences between two molecules include the type of sugar that forms a section of the molecules and the identity of one of the four nitrogenous bases that make up another section of the molecules. These two molecules are —

A science class is planning a field trip to a local farm that has a large pond. Which of the following lists the order of biological organization from smallest to largest that the students can expect to find at the pond?

A student is asked to draw a food web in which the same organism is a primary consumer as well as a secondary consumer. How should the organism be represented in the food web?

How do an increase in the organic matter in soil and an increase in soil depth affect the population of plants in an area?

In the 1960s the molecular biologist George Streisinger developed the strand-slippage hypothesis. Streisinger noticed that mutations occurred in areas of DNA that contained many repeated sequences. When a strand-slippage error occurs, an insertion mutation can result. How does the insertion mutation affect the DNA?

Scientists can bioengineer skin in a laboratory to treat severe burns and other types of skin injuries. This bioengineered tissue is grown from living cells. The cellular process that enables the cells to grow and develop into tissue is —