Enrique plays center midfield on his competitive soccer team. He is very serious about competing in the next World Cup in 2022. Athletes that compete at such a high level require a lot of energy in order to run the field for long periods of time. Which of the following foods would be best for Enrique to eat before his games?

Alfonso is a competitive weightlifter who wants to build up his muscle mass so that he can lift even more than his current record of 250 pounds. Which biomolecule should Alfonso be eating and when should he eat it?

Which statement explains the effect of an inhibitor (stopper) on an enzyme?

According to the graph pictured above, the pH at which enzyme #2 would work best at is _____________.

Jack is looking at a cell under a microscope and determines that it is prokaryotic. Which of the following characteristics, would Jack have seen to know the cell was a prokaryote?

Your biology teacher describes a cell that with the following characteristics:

• Square shape

• Has the cell organelles: mitochondria, ribosomes, chloroplast, cell wall, vacuole, and cell membrane

• Can perform photosynthesis

• Has genetic information found in a nucleus

Based on the characteristics, what type of cell is your teacher describing?

Why do cells go through the cell cycle?

Checkpoints occur between the stages of the cell cycle. If a cell does not meet certain criteria at the end of the stage, it will not move to the next stage.

Which of these occurs before the cell enters the G2 stage of the cell cycle?

What step of mitosis is shown below?

The diagram above shows the movement of molecules across a membrane without energy. Which two (2) processes does this diagram most directly model?

A typical virus consists of proteins on the outside of the cell that match receptor proteins on host cells. The role of these glycoproteins is to…

Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?

A student used poster board to construct this model of a section of DNA:

Which statement describes this model of DNA?

What process is represented by the diagram below?

What is the function, or job, of the molecule represented by the letter A?

Which cell process is being described above?

What kind of genetic mutation is shown in the diagram below?

The sequence above represents three codons. Which of the following changes would be expected in the amino acid sequence if the mutation shown above occurred? Use codon chart below

Using a microscope, Brad was looking at a slide and watching the process of meiosis. What kind of cell was Brad probably looking at?

A mutation occurs in the gamete of a woman. Who would most likely be affected by this genetic error?

What process occurs during meiosis that leads to genetic variation in the gametes produced?

How many chromosomes are in human sex cells?

In cocker spaniels the allele for a black coat color (B) is dominant over the allele for a brown coat color (b). If a heterozygous cocker spaniel is crossed with a heterozygous black cocker spaniel, which of the following genotypic ratios can be expected?

Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for that trait. If the stem characteristics are determined by a single gene, what is the expected outcome of crossing two tomato plants that are homozygous for hairy stems?

Based on the food web above, which organism would be considered a primary consumer?

If the mountain lion is found in the third trophic level because it is a secondary consumer, which of the following organisms would be found in the same trophic level as the Mountain lion?

Which of the following organisms are in a trophic level that would receive a larger percentage of the energy received at the bats’ trophic level?

In the energy pyramid above the producers provide 54,000J of energy. How much energy would be available to the tertiary consumers?

Which of these correctly describes the relationships between the organisms in the table above?

When succession occurs on rock, which life form will help create the soil by breaking down bare rock?

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

Photosynthesis and cellular respiration both involve the use and release of gases. Which statement correctly identifies the role of gases in the two processes?

Which of the following best describes the relationship between the products of photosynthesis and the reactants of cellular respiration?

Cytokins are hormones produced by plants that regulate growth. Which system carries cytokins produced in the roots to the rest of the plant?

Some plant species that are found in arid (dry) environments are adapted by having smaller leaves. Which of the following statements explains why having smaller leaves would be beneficial for these plants?

Which of the following is not true about plant reproduction using flowers?

The muscle cells produce carbon dioxide. Carbon dioxide is a waste product. The carbon dioxide then is transported to the lungs by the blood. The lungs exchange gas and the CO2 is removed when the runner exhales. Which following systems is described in this interaction?

Digestion is important for breaking down food into nutrients, which the body uses for energy. Food and drink must be broken down into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body. This food is then used to power movement by the body. What system is NOT described in the interaction?

Only 1 in 300 million sperm will reach the fallopian tube during reproduction. In order for a baby to be created, the egg of the female must simultaneously move through the Fallopian tube, via muscular contractions, as the sperm make their journey. Once the sperm encounters, penetrates and fertilizes the ovum (egg), a zygote is created. This entire process is simulated by the release of hormones in the body. Which system is NOT described in the interaction?

Taxonomic classification is important to marine biologists because it provides a way to-

Which two organism are most related in the table above?

What is the scientific name of the gray wolf?

Which kingdom does this organism described below belong to?