Which label indicates the substrate?

Which label indicates the enzyme?

What is the optimal pH of trypsin?

Enzymes are classified as:

Which letter indicates the enzyme-substrate complex?

The part of the enzyme that the substrate binds to is called the - 

The Oxygen in a water molecule carries a slightly _________ charge

The hydrogens in a water molecule carry a slightly _________ charge

What is the function of a lipid?

What is the function of a protein?

What is the function of a nucleic acid?

Which type of macromolecule is this?

This molecule contains CHON and is a

Which biomolecule makes up cell membranes?

Which contains carbon, hydrogen, oxygen and has a ring-like structure?

This molecule contains CHONP and is a

Enzymes are composed of which organic molecule?

Examine image C below. How could you increase the rate of reaction in image C?

Which do BOTH prokaryotes and eukaryotes contain?

This cell is a(n)______ cell because it contains ________

This cell is a(n)______ cell because it contains ________

Which organelle contains DNA and controls the cell?

Which organelle controls what goes in and out of the cell?

This organelle digests dead cell parts and contains enzymes

The gelatinous material inside the cell

Proteins are produced at this organelle.

This organelle makes ATP (usable energy for the cell).

This organelle packages and processes/ships proteins

The above diagram shows the process of osmosis. Only the water molecules could enter the cell because water molecules — 

A student was studying the responses of cells to solutions of varying salt concentrations. Which solution below would cause no change in cell size?

What process is shown here?

This process moves molecules with the help of transport proteins and is called..

Some peeled pieces of apple were placed in distilled water and some in very salty water. The cells in the apple pieces will —

In the cell membrane model shown above, the molecules which move large molecules into and out of the cell are known as -

The picture shows a virus and a bacteria cell. Which of the following do they have in common?

Which of the following choices is NOT a method of preventing bacterial illnesses from spreading in a meat-processing plant?

Select THREE descriptions below that apply to a virus.

A virus requires a host cell for what process?

Which type of pathogen cannot be treated with an antibiotic?

The infectious particles below could be described by all of the following statements EXCEPT

The transfer of energy from glucose to ATP is accomplished most directly by the process of

Algae and multicellular plants are autotrophs because they - 

If photosynthesis "fixes" carbon dioxide, what does cellular respiration do?

The graph shows how dissolved oxygen and carbon dioxide levels changed in a pond over a 24 hour period. What caused the decrease in oxygen concentration during the night?

The image shows the process of mitotic cell division in a cell. If the daughter cells each have 16 chromosomes after cell division, what was the number of chromosomes in the parent cell?

The process of DNA replication is necessary before a cell - 

The diagram above shows homologous chromosomes during prophase I of meiosis. Which of the following correctly describes the process being illustrated?

The crossing over of homologous chromosome and the independent assortment of chromosomes only occur during meiosis. How do these two processes result in genetic variation of organisms?

What is the correct sequence for plant cell mitosis?

According to this diagram, the result of spermatogenesis is four sperm cells, each with - 

If the DNA sequence of a gene is TAC CCC GGA GAG, what mRNA sequence will be produced in transcription?

What amino acid would be added to the protein being formed during translation if the mRNA codon reads "AUG?"

What amino acid would be added to the protein being formed during translation if the mRNA codon reads "CCU?"

The picture shows an x-ray diffraction of DNA. The x-ray diffraction of DNA led to the idea that DNA

The arrow in the diagram represents the movement of which molecular structure?

What are the next three mRNA bases in the strand below?

Which is Heterozygous?

What are the chances that the offspring will have homozygous recessive traits?

What is the sex of the individual whose karyotype is seen in the image?

The technique shown in the diagram represents 

A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?

One parent is heterozygous for a certain trait (Dd).  The other parent is homozygous dominant( DD) for that trait.  What is the percent chance that an offspring from this cross will be heterozygous?

While working with pea plants, Gregor Mendel observed that some tall plants had yellow seeds while other tall plants had green seeds.  This observation is best explained by

Darwin's explanation for evolution was dependent on which scientific concept?

Five species of frogs that live in separate habitats within 5 non-overlapping ranges along the Mississippi River share a common ancestor.  Which process is most likely responsible for the formation of these five distinct species?

A group of ponies lives in the Chincoteague National Wildlife Reserve in Virginia.  The development of longer legs over time would be selected for if-

The diagram shown represents a cross-section of undisturbed rock layers.  A scientist discovers bones of a complex vertebrate species in layer B and C.  In which layer would an earlier, less complex form of this vertebrate most likely first appear?

The leg structures of many different vertebrates are quite similar in number and location of bones.  Most scientists would probably explain this on the basis of-

The introduction of new genes into the gene pool of a population occurs through the process of

The fact that vertebrate embryos pass through  similar stages of development is evidence for

For the growth curve to continue increasing, which of these must occur?

Seaweeds occupy an important niche in the Chesapeake Bay ecosystem.  Which question will best help a student identify the role of seaweeds in this ecosystem?

In a population of 120 oak trees, 25% of the population has oak wilt disease.  What is the number of trees in this population that have oak wilt?

In an ecosystem, a sudden decrease in the number of bacteria in the soil would most likely result in-

A decreases in the grass population will most immediately decrease the available energy for the

According to the energy pyramid, the most energy is present in organisms living at the same level as the-

Most populations introduced to a new ecosystem grow until factors such as lack of food and overcrowding limit their growth, as illustrated above.  What does the portion of the graph labeled B represent?

The first organisms to reappear after an ecosystem is damaged.

Some snake embryos have small buds resembling limbs  These buds disappear at later stages of embryo development.  These findings  suggest that these snakes-

The information in the table supports which conclusion?

Which species is most closely related to species C?

Ursus horribilis, the scientific name for the grizzly bear, refers to the bear's

The chart shows observations made of an unknown organism.  Based on this information, the organism most likely belongs to the kingdom-