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STAAR Biology High School 2017 - Past Paper

Quiz by TEKS Biology High School

High School - Biology
Science (2010)
Texas Essential Knowledge and Skills (TEKS)

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Measures 35 skills from
High School - Biology
Science (2010)
Texas Essential Knowledge and Skills (TEKS)

B.4.A: Prokaryotic & Eukaryotic Cells
B.6.E: Changes In DNA
B.12.A: Biological Relationships
B.10.B: Plant Systems
B.12.F: Environmental Change
B.6.F: Genetic Combinations
B.5.A: Cell Cycle
B.9.C: Enzymes
B.4.C: Viruses
B.7.F: Evolutionary Mechanisms
B.11.D: Ecological Succession
B.6.A: DNA Components
B.9.A: Biomolecules
B.7.B: Fossil Records
B.10.A: Animal Systems
B.12.E: Carbon & Nitrogen Cycles
B.4.B: Cellular Processes
B.6.B: Genetic Code
B.5.C: Cell Differentiation
B.11.A: Homeostasis
B.7.E: Adaptation & Diversity
B.7.A: Common Ancestry
B.12.C: Flow Of Matter & Energy
B.8.B: Hierarchical Classification
B.6.H: Genomes Of Organisms
B.5.B: Specialized Cells
B.11.C: Microorganisms
B.7.G: Cell Complexity
B.10.C: Biological Systems
B.6.G: Meiosis
B.8.A: Taxonomy
B.6.C: Transcription & Translation
B.11.B: External Factors
B.9.B: Photosynthesis & Cellular Respiration
B.6.D: Gene Expression

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54 questions
Show answers
  • Q1
    The picture shows a student using a microscope to study a prepared slide of a single-celled organism. A single-celled organism can be classified as a prokaryote based on the absence of —
    Question Image
    chromosomes
    a cell membrane
    a nucleus
    ribosomes
    30s
    B.4.A: Prokaryotic & Eukaryotic Cells
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  • Q2
    Different types of mutations can occur in DNA. The diagram represents a type of mutation. Which statement describes the mutation in the diagram?
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    A silent mutation results in the insertion of a different amino acid
    A base is inserted into one strand of the DNA
    A deletion of a cytosine base occurs
    A substitution occurs with the adenine base
    30s
    B.6.E: Changes In DNA
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  • Q3
    A remora is a fish that has an adhesive disk on the back of its head that it uses to attach itself to a large shark. When food floats away from the shark’s mouth as it feeds, the remora collects the scraps. Drawings of a shark with a remora attached and a remora’s adhesive disk are shown below. The relationship between the remora and the shark is an example of —
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    competition
    commensalism
    predation
    parasitism
    30s
    B.12.A: Biological Relationships
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  • Q4
    Invasive plant species affect the interactions of living and nonliving components of an ecosystem, so the removal of invasive plants is often necessary. The goal of most plant-control methods is to disrupt or inhibit the function of different plant systems. For example, insects can be used to chew through roots in order to reduce a plant’s ability to absorb water. Which of these functions would be most immediately affected by a reduction in water uptake by roots?
    Sunlight absorption
    Seed dispersal
    Photosynthesis
    Disease resistance
    30s
    B.10.B: Plant Systems
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  • Q5
    The picture shows a pika, a small mammal found in grassland ecosystems. The vast grasslands of the Tibetan plateau are home to the plateau pika. The numerous pikas are prey for many predators of the grasslands, which serve as a major watershed for much of the area. The watershed drains large quantities of groundwater during the rainy season, or the monsoon season. Pikas have extensive burrows that help drain groundwater rapidly and are used as nesting sites by many bird species. However, many people advocate the eradication of the plateau pikas because they compete with livestock for grass. Which of these will most likely happen if the plateau pikas are completely removed from the Tibetan plateau grasslands?
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    The ecosystem will become unstable because predators will have fewer prey, the birds will have fewer nesting sites, and the area downriver will become vulnerable to flooding without the burrows to aerate the soil and provide drainage for monsoon rains.
    The ecosystem will become more stable because the pika will be replaced by other species of small mammals that can fill the niche, bird species will adapt to nesting aboveground, and the soils will become compacted without the burrows.
    The ecosystem will become more stable because the pika will no longer be there to eat the grasses, the birds will migrate to other ecosystems during nesting season, and the soils will be able to absorb more of the monsoon rains without the pika burrows.
    The ecosystem will become unstable because the predators will migrate to nearby ecosystems, the birds will nest in nearby trees, and the soils will be aerated by other small mammals.
    30s
    B.12.F: Environmental Change
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  • Q6
    Albinism is an autosomal recessive condition. Which circle graph shows the genotype probability when an albino female mates with a male that is heterozygous for the albinism trait?
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    30s
    B.6.F: Genetic Combinations
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  • Q7
    Part of the cell cycle is shown in this simplified model. This part of the cell cycle is best described as the process that —
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    synthesizes new molecules
    maintains genetic homeostasis
    duplicates the DNA
    completes cell division
    30s
    B.5.A: Cell Cycle
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  • Q8
    Taq polymerase is an enzyme used in the polymerase chain reaction (PCR) to replicate fragments of DNA. A study published in 1976 examined the properties of Taq polymerase after the enzyme was isolated from Thermus aquaticus, a thermophilic bacterium that lives in the hot springs of Yellowstone National Park. The graph shows one of the results of the study. Which statement about enzyme activity is best supported by this graph?
    Question Image
    An enzyme works equally well in bacteria that are adapted to high temperatures and in eukaryotic cells such as human cells
    An enzyme functions best under specific temperature conditions
    An enzyme must be composed of multiple polypeptides, or subunits, to be active.
    An enzyme’s rate of activity increases with time until it becomes inactive.
    30s
    B.9.C: Enzymes
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  • Q9
    The human immunodeficiency virus (HIV) often infects and destroys CD4 T cells. These CD4 T cells are one of many kinds of white blood cells that are an important part of the immune system. The most common danger related to the destruction of CD4 T cells is —
    a decrease in the flow of blood to vital organs
    a decrease in the amount of oxygen being transported to tissues
    an increase in the threat of diseases caused by microorganisms and viruses
    an increase in the risk of high blood pressure
    30s
    B.4.C: Viruses
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  • Q10
    Common baboons live on the savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop. Which of these is a likely outcome of movement by young males?
    Allele frequencies suddenly change
    Relative genotypic frequencies reach a constant state
    Intermediate phenotypes increase in the species
    Gene flow occurs between populations
    30s
    B.7.F: Evolutionary Mechanisms
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  • Q11
    An estuary collects sediments from the ocean and rivers that feed into it. The sediments swirl around and then settle to form a mudflat. Eel grass is then established on the mudflat. The ecosystem changes over time and ultimately develops into a salt marsh that contains mangrove trees. Which of the following is likely NOT involved in this example of ecological succession?
    The roots from plants help stabilize the sediment, keeping it in place
    The concentration of salt becomes so high that all plant life is destroyed
    The soil becomes so fertile that eel grass is replaced by other plant species
    The rotting remains of plants add to the fertility of the soil
    30s
    B.11.D: Ecological Succession
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  • Q12
    Differences in traits such as hair texture are determined by differences in —
    the sequence of nucleotides in DNA
    the location of sugar groups in DNA
    the number of nitrogenous bases in DNA
    the molecules attached to the phosphate in DNA
    30s
    B.6.A: DNA Components
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  • Q13
    Students were given a list of seven elements and asked to identify the four elements that are most abundant in biomolecules. Which table correctly identifies the four most-abundant elements in biomolecules?
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    30s
    B.9.A: Biomolecules
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  • Q14
    The graph shows the number of taxa of reptiles whose fossilized tracks have been found. Which statement is best supported by these data?
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    Environmental conditions for speciation were most favorable for reptiles during the Permian period
    A great extinction occurred during the Jurassic period
    Competition for food and shelter among reptile species was very low during the Triassic period
    Reptiles adapted to a terrestrial environment during the Cretaceous period
    30s
    B.7.B: Fossil Records
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  • Q15
    The picture shows bean-shaped glands called nodes. The clusters of cells in nodes include macrophages that break down viruses and other potentially harmful materials. Nodes also contain cells that produce protein particles capable of capturing harmful materials that flow in tissue fluid through the nodes. Different parts of the body are drained by nodes in different regions of the body. Which body systems are directly responsible for regulating these nodes and protecting the body from harmful materials in tissue fluid?
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    Endocrine and digestive systems
    Circulatory and nervous systems
    Immune and lymphatic systems
    Digestive and nervous systems
    30s
    B.10.A: Animal Systems
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  • Q16
    This diagram demonstrates why the ocean is a large carbon sink. An increase in the amount of carbon dioxide in the atmosphere can cause atmospheric temperatures to increase. Which statement explains how this could affect the ocean as a carbon sink?
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    Less carbon dioxide gas would be contained in the ocean because increasing precipitation would dilute the carbon entering the ocean
    Less carbon dioxide would be dissolved in the ocean because increasing atmospheric temperatures would cause ocean temperatures to increase
    Less atmospheric carbon dioxide would be available to phytoplankton
    Dissolved carbon dioxide gas in the ocean would increase because surface winds would cause a deeper circulation pattern, making more room for the gas
    30s
    B.12.E: Carbon & Nitrogen Cycles
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  • Q17
    Which molecule synthesized by plants is a major source of energy for cellular processes in both plants and animals?
    Nucleic acid
    Chlorophyll
    Wax
    Glucose
    30s
    B.4.B: Cellular Processes
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  • Q18
    Researchers combined sequences of fruit-fly DNA from a gene for a particular trait with frog DNA. The mixture was heated to separate the DNA strands. Cooling allowed the single strands to form pairs. The researchers observed that some of the fruit-fly DNA paired with frog DNA. The results provide evidence that —
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    fruit flies and frogs can be made to develop some of the same physical traits
    the replication of genetic material can occur at any temperature
    heat can cause mutations in the DNA sequences of organisms
    similar nucleotides are present in both fruit-fly and frog DNA
    30s
    B.6.B: Genetic Code
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  • Q19
    From a single fertilized ovum undergoing a series of rapid cell divisions, a human infant develops. The embryonic cells become specialized for a variety of functions. Which of these statements best describes how different cell types develop?
    Each cell has multiple copies of DNA that are affected in different ways by the environment to change the function of the cell at regular intervals
    Each cell type has only one chromosome containing the DNA needed for that cell type
    Each cell type contains only the active parts of the DNA needed for that cell type
    Each cell has an identical copy of DNA with enzymes controlling the expression of specific genes, leading to a variety of cells
    30s
    B.5.C: Cell Differentiation
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  • Q20
    The diagram demonstrates a feedback process involving antidiuretic hormone (ADH). ADH increases the permeability of parts of the nephrons of the kidney, resulting in less water in the urine. This feedback loop is likely to be activated when —
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    the body experiences dehydration
    body temperature drops
    blood glucose levels are stable
    the urinary tract is infected
    30s
    B.11.A: Homeostasis
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