BIOMCASSampleTest1

Which of the following statements describes how human traits are inherited?

• Children receive half of their genes from each parent.

• Only dominant traits are passed from parents to their children.

• Traits skip a generation, passing directly from grandparents to their grandchildren

• Female children receive genes only from their mothers, and male children receive genes only from their fathers

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NGSS.HS-LS3-1

A cell membrane has a double layer of molecules. These molecules are made up of a phosphorus-containing “head” and two long, fatty acid “tails.” Which of the following best explains why the molecules are classified as lipids?

• They contain phosphorus.

• They form a double layer.

• They are made up of fatty acids.

• They are found in the cell membrane.

All corn plants contain the ZmLA1 gene. Some corn plants contain a certain mutation in the ZmLA1 gene. The graph below shows the amount of ZmLA1 RNA produced in plants with the normal gene and in plants with the mutated gene.

Based on the graph, what most likely happens in corn plant cells as a direct result of the mutated gene?

• DNA replication increases.

• Lipid production decreases.

• Glucose synthesis increases.

• Protein production decreases.

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NGSS.HS-LS1-1

NGSS.HS-LS3-2

The growth of plants in many ecosystems is limited by the supply of nitrogen. Which of the following groups of organisms plays the largest role in moving nitrogen between the atmosphere and plants?

• bacteria

• earthworms

• insects

• protists

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NGSS.MS-LS2-3

An unfertilized egg cell has six chromosomes. After fertilization, how many chromosomes should the zygote have?

• 3

• 6

• 12

• 24

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

The diagram below shows the structure of a bacterial cell. Which of the following distinguishes this bacterial cell from eukaryotes?

• The bacterial cell is a unicellular organism, and all eukaryotes are multicellular.

• Ribosomes are found in the cytoplasm of the bacterial cell, and eukaryotes do not have ribosomes.

• The bacterial cell has both a cell membrane and a cell wall, and eukaryotes have only cell membranes.

• DNA in the bacterial cell is always in contact with the cytoplasm, and all eukaryotes have DNA located inside a nucleus.

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NGSS.MS-LS1-1

Lithops are multicellular organisms found in sandy soil in deserts. They have large, central vacuoles in their cells that store water. Which of the following best classifies lithops?

• They are bacteria because they store water.

• They are animals because they are multicellular.

• They are fungi because they are found in sandy soil.

• They are plants because they have large, central vacuoles.

In the plant Brassica rapa, the allele for purple stem color (P) is dominant to the allele for green stem color (p). Students in a biology class cross-pollinated a heterozygous purple-stemmed plant (Pp) with a green-stemmed plant (pp). The 78 seeds produced from this cross were planted to form the F1 generation. Approximately how many purple stemmed plants and how many green stemmed plants are expected in the F1 generation?

• 0 purple-stemmed plants and 78 green-stemmed plants

• 39 purple-stemmed plants and 39 green-stemmed plants

• 58 purple-stemmed plants and 20 green-stemmed plants

• 78 purple-stemmed plants and 0 green-stemmed plants

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NGSS.HS-LS3-2

NGSS.HS-LS3-3

There are many fungus species that live inside plant tissues. What determines whether the relationship between a fungus and a plant is commensalism, mutualism, or parasitism?

• where the fungus is located in the plant

• how long the fungus survives in the plant

• whether the fungus reproduces in the plant with spores, seeds, or runners

• whether the effect of the fungus on the plant is neutral, positive, or negative

Which of the following statements best describes the reproduction of both viruses and cells?

• Viruses and cells use mitosis to reproduce.

• Viruses and cells must have a host to reproduce.

• Viruses and cells must activate polar bodies to reproduce.

• Viruses and cells need copies of their genetic material to reproduce.