Biology contest test #3

Plants like sage are equally spaced apart in a uniform distribution. This arrangement is most likely due to

• chance

• microclimates in the habitat

• the random distribution of seeds

• resource competition or territoriality between individual plants.

• The location of nutrient concentrations in the habitat

Which of the following is true of a cation?

• It can easily form hydrogen bonds

• it has lost one or more electrons

• It has gained one or more electrons

• It usually forms from an atom with six or seven electrons in its valence

• It is more likely to form covalent bonds than ionic bonds.

A woman with type A blood has a child with type O blood. What blood type can the father NOT have?

• Type A

• Type B

• Type O

• Type AB

• More than one of these is correct.

Tags

NGSS.HS-LS3-1

Which of the following best describes where glycolysis occurs in the cell?

• In the mitochondrial matrix of eukaryotic cells

• In the mesosomal membrane of prokaryotic cells.

• In the cytoplasm of both prokaryotic and eukaryotic cells.

• On the mitochondrial membrane of prokaryotic and eukaryotic cells.

• On the mitochondrial membrane of eukaryotic cells.

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NGSS.HS-LS2-5

The primary function of humoral immunity is

• to infect poisonous packets into parasites such as protozoa

• to reject transplanted tissues

• to protect the body against cells that become cancerous

• to protect the body against pathogens circulating in the blood and lymph

• to defend against bacteria and viruses that already infected cells.

Tags

NGSS.HS-LS1-3

Which of the following statements is INCORRECT concerning gene expression in multicellular organisms?

• The amount of substrate or product in a metabolic pathway can affect when a gene is expressed.

• Not all genes in the genome are expressed by every cells

• all cells of a multicellular organism contain the same structural genes, but each cell type has different regulatory genes.

• Transposons can move from one location to another within the genome and affect gene expression

• Variation in which introns are removed from the mRNA transcript allows for differences in the expression of a gene.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

The DNA of an organism contains 22% cytosine. How much adenine does it contain?

• 11%

• 22%

• 28%

• 44%

• 56%

UV light can cause the formation of thymine dimers between adjacent thymine bases in DNA. Which of the following enzymes is not involved in the repair of DNA when this occurs?

• Nucleases

• DNA polymerase

• Ligase

• Primase

• all are involved

Mayflies recognize water by the diffraction pattern it creates. Asphalt creates the same pattern. Mayflies will lay eggs on the roads, even if they recognize that the road is not water. This behavior is an example of

• operant conditioning

• agonistic behavior

• learned behavior

• imprinting

• fixed action pattern

The parasite that causes malaria is

• Trypanosoma

• Plasmodium

• Giardia

• Eimeria

• Toxoplasma