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WorksheetsBio Final Exam Review
Total questions: 25
Worksheet time: 19mins
If several pea plants with the genotype TTYy are crossed with pea plants with the genotype Ttyy, what percentage of the offspring will be expected to have the TTYy allele combination?
25%
40%
50%
75%
A photomicrograph of onion root tip cells during mitosis is shown below.
Prophase
Metaphase
Anaphase
Telophase
A model of a DNA molecule is shown below. The arrow indicates:
the bond between adjacent phosphate and deoxyribose molecules
the junction of introns and exons in the sense strand of DNA
the hydrogen bond between complementary nucleotides
the junction of a codon and a DNA triplet
Which of these statements best explains the process of energy conversion that takes place in the mitochondria?
Energy is required for carbon dioxide molecules to form six-carbon sugar molecules.
Water molecules and radiant energy are necessary for anaerobic respiration to take place.
Oxygen molecules release energy in the form of heat during combustion reactions.
The energy in the bonds of glucose molecules is transferred to the phosphate bonds in ATP.
Characteristics such as a widow’s peak or attached earlobes are determined by the genetic code. Which components of DNA are referred to as the genetic code?
Phosphate groups
Nitrogenous bases
Deoxyribose sugars
Hydrogen bonds
The acacia ant (Pseudomyrmex ferruginea) lives in the bullshorn acacia plant, as shown below.
The acacia ant nests and feeds in the plant’s hollow thorns. The ant helps protect the bullshorn acacia by attacking insects and grazing animals that come near the plant. The relationship between the acacia ant and the bullshorn acacia is an example of which of the following?
Commensalism
Mutualism
Neutralism
Parasitism
A codon chart is shown below.
Which of these changes to the DNA triplet 3'GCT5; will affect the protein produced?
GTT
TCT
TCC
GCA
In cocker spaniels the allele for a black coat color (B) is dominant over the allele for a brown coat color (b).
If a brown cocker spaniel is crossed with a heterozygous black cocker spaniel, which of the following genotypic ratios can be expected?
0BB:2Bb:2bb
1BB:2Bb:1bb
2BB:0Bb:2bb
2BB:1Bb:0bb
Some organisms have genes that improve their ability to survive and reproduce. If the genes also help their offspring survive and reproduce, then which of the following will most likely increase?
The frequency of the genes in one individual
The frequency of genes in the population
The number of genes in one chromosome
The number of genes in the species
Health-care workers are exposed to many different types of pathogenic and nonpathogenic microorganisms.
Which body systems work together to protect the body from pathogens?
Muscular and vascular
Digestive and excretory
Circulatory and immune
Endocrine and reproductive
The Texas blind salamander (Eurycea rathbuni) lives in the Edwards Aquifer region around San Marcos. Along with other species the salamander lives in total darkness in the underground crevices and caves of the aquifer region. The table lists some of the organisms that live in this environment and their food sources.
In an energy pyramid for these aquifer cave dwellers, which of the following would be placed at the bottom?
Snails
Blind shrimp
Protozoa
Texas blind salamanders
A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following?
The siblings of the organism
The offspring of the organism
The other organisms living nearby
The mating partner of the organism
The Nile River flows into the Mediterranean Sea. The Aswan High Dam contains the flow of water from the river and reduces the annual fall flooding. The floodwater is trapped
behind the huge dam, allowing irrigation for agriculture. Sediments that would be washed away by the annual floods are also trapped behind the dam. The graph shows the water flow from the Nile that enters the Mediterranean Sea.
How has this dam most likely affected the Mediterranean Sea ecosystem?
Reduced nutrients from the land support fewer producers in the sea.
Water trapped behind the dam causes the marine ecosystem to move inland.
The flooding in August through November causes marine life to be destroyed.
The water temperature of the sea has increased.
Arthropods are joint-legged animals. Spiders, crabs, pill bugs, centipedes, and millipedes are examples of the many types of arthropods. Which of these arthropods are most closely related?
Arthropods of the same family
Arthropods of the same class
Arthropods of the same genus
Arthropods of the same species
The human digestive system is approximately 900 cm long. Food is moved through the digestive tract primarily by —
bile produced by the pancreas
the enzymes amylase and pepsin
muscular contractions
hydrochloric acid in the stomach
The overgrowth of algae poses a major problem for coral reefs. Intensive fishing is one factor that contributes to algae overgrowth because it does which of the following?
Allows more sunlight to be available to algae
Inhibits the spread of pathogens in algae colonies
Reduces the number of organisms that feed on algae
Increases the competition between different algae species
A harmless scarlet king snake and a venomous eastern coral snake have similar band patterns, as shown below. For the scarlet king snake, the adaptation of having a banding pattern like the eastern coral snake’s is known as mimicry.
The outcome of this adaptation in the scarlet king snake is to —
make it easier for the scarlet king snake to attract prey
make it easier for the scarlet king snake to interbreed with the other snake
allow the scarlet king snake to blend in with its environment
protect the scarlet king snake from predators
Cold sores are caused by the herpes simplex virus type 1. A company that wants to develop antiviral drugs would ask a research immunologist to study —
the mechanism used by the virus to infect cells
how closely related the virus is to cold viruses
the metabolism of the virus
meiosis in the virus
Leaves are part of a plant’s shoot system. The xylem tissue in leaves transports —
the bacteria needed for nitrogen fixation in root nodules
the wax required to coat the surface of actively growing tissue
the water and minerals that are absorbed by the roots
the oxygen that regulates the rate of carbohydrate production
Zoogeographic regions are characterized by the presence of specific groups of animals. These regions are determined by the taxonomic or phylogenetic relationships of animals.
The map shows the zoogeographic regions proposed by the naturalist Alfred Russel Wallace in 1876.
The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations?
1 and 2
3 and 4
5 and 6
7 and 8
The graph shows the basic changes in a forest community after a disturbance occurred.
The information shown in the graph suggests that the changes in the forest community were caused by —
tree-leaf replacement after a storm
succession after a fire
repeated habitat destruction
decreased species diversity
Plant hormones serve as chemical messengers between cells and tissues. Auxin is a plant hormone that causes the cells on the shady side of a plant shoot to elongate.
The response enabled by auxin is known as —
geotropism
transpiration
phototropism
photosynthesis
A native species and a non-native species are competing for resources within the same ecosystem. The non-native species is more likely to survive than the native species in which of the following situations?
Both the native species and the non-native species thrive on the same food source.
The native species is immune to certain pathogens in the ecosystem.
Predators prey on both native and non-native species.
The non-native species has no natural enemies in the ecosystem.
Which of the following are missing from the food web shown?
Producers
Decomposers
Omnivores
Predators
A student collected the animal shown below on a field trip. The student used a dichotomous key and a microscope to classify the animal.
How should this animal be classified?
Arthropoda
Annelida
Mollusca
Platyhelminthes
