Bio Test with 100% correct answers 2024

How is chemosynthesis different from photosynthesis? - answer-Chemosynthesis can occur in environments without sunlight. Chief cells are found in the glands that line the inside of the stomach. These cells secrete large amounts of enzymes to aid in food digestion.Which cellular structure will be more abundant in chief cells because of their high rate of enzyme secretion? - answer-endoplasmic reticulum Which species in the food web would be subject to the greatest biomagnification of pesticides applied to the grasses? - answer-hawks Which amino acid sequence would be produced from this DNA? - answer-Thr-Leu-Val Based on the salamander distribution data shown on the map, choose two salamander subpopulations most likely to experience gene flow. Write the two Salamander Subpopulation labels that should go into the blank boxes. Write only one salamander label into each blank box. There may be more than one correct answer. - answer-o and p Which two salamander subpopulations would be least likely to reproduce successfully if brought together? - answer-p and n Complete the blank cladogram using the information in the salamander distribution map and accompanying explanatory text.Write the salamander label that should go into each of the blank boxes. You should use all of the salamanders. There may be more than one correct answer. - answer-l, n, o, p, m Scientists collect data on the size and number of worms that three bird species prefer to eat. The feeding preference data of the three bird species are shown. Which statement is supported by the data? - answer-Less competition between the three bird species will be observed if a range of differently sized worms is available. Which statement describes crossing over as it occurs in meiosis? - answer-Homologous chromosomes exchange segments of DNA. Which method do scientists use to confirm that crossing over occurs? - answer-dihybrid crosses Which molecule was coded for by the longest piece of DNA, assuming that no post-transcriptional RNA processing or splicing has occurred? - answer-a protein with 25 amino acids Describe how many green and brown colored frogs would go into the New Population box to predict the evolution of these frogs due to the changes in the environment. Explain WHY the population would change this way to earn full credit. - answer-The brown alleles will learn to live in the new conditions and because of their color they are going to have a higher survival rate. Soon enough the green frogs are all going to get eaten up and won't be able to survive for very long. Select the evolutionary mechanism that would cause this change in the genes of this frog population. - answer-natural selection Which pair of species is the most closely related? - answer-2 and 4 Select the two statements that describe evidence to support the determination of the most closely related pair of species. - answer-B & D A student studying feather color inheritance in a certain species of chickens observes that the chickens have black (homozygous), blue (heterozygous), or white (homozygous) feathers. The student hypothesizes that this feather color trait follows the incomplete dominance inheritance pattern.Which data table would support the student's hypothesis? - answer-A The graph shows how a Serengeti buffalo population changed over a period of years. During this time period, the buffalo were affected by the rinderpest virus, a debilitating disease with a high mortality rate. However, within five years, the virus was eliminated. - answer-60,000 buffalo The table compares structures found in several groups of photosynthetic organisms. The presence of a structure is symbolized by a (+) symbol, while the absence of a structure is symbolised by a (-) symbol.Using the data in the table, determine where on the cladogram some of the structures evolved.Place a structure number label into each blank box. Place only one number label in to each blank box. You do not need to use all the number labels. - answer- STATE TEST QUESTION: Students conduct an experiment to test whether or not the trait for pollen shape and the trait for flower color are next to each other on the same chromosome in pea plants. They cross two plants that are known to be heterozygous for both traits to produce off spring. Long pollen shape (L) is dominant over round pollen shape (I). Purple flower color (P) is dominant over red flower color (p). Click on the value of each phenotype frequency on the graph that would be expected if the traits are linked and the dominant traits are next to each other on the same chromosome for both plants. - answer-75, 0, 0, 25 A scientist isolates a number of non-photosynthetic prokaryotes.Which structure would be found in these cells? - answer-cell walls Oxygen depletion, also known as hypoxia, is one result of runoff from over-fertilized lawns or farmland. After heavy rains, nutrient-rich water enters the local aquatic environment, causing a series of events to occur within the ecosystem.Some events caused by nutrient-rich runoff entering a lake ecosystem are shown.Move the sequence labels into the blank boxes to sequence the correct order of these events, - answer- Students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. They place an Elodea plant into a tube filled with water. Then, the students place the test tube under a light and slowly increase the temperature of the water. They record their results and display them on a graph as shown. Which statement is supported by the data in the graph? - answer-The rate of oxygen production is greatest in section M. Which statement explains the effect of temperature on the rate of photosynthesis? - answer-Enzymes involved with plant photosynthesis are disrupted at temperatures above 25°C. A scientist is examining a pedigree that includes several generations of an organism with XX/XY chromosome sex determination.Which pattern of inheritance would support the hypothesis that the trait being studied is a recessive sex-linked trait found on the X chromosome? - answer-The trait is mostly expressed in males who have a maternal grandfather with the trait. The table shows sample cells taken from tissues of two individuals of the same species. DNA from each cell is analyzed using gel electrophoresis. - answer-Cell 1 from Individual A will have an identical banding pattern compared to Cell 2 from Individual A. The diagram models the time-lapse movement of particles across a cell membrane. The particles have characteristics that allow them to pass freely across the membrane. - answer-A, D, F, Arrange the statement to identify the order in which the events must have occurred on these two islands. (1-4 from top to bottom) - answer-2134 A computer program models the changing frequency of a single allele for three different population sizes. For each population, the program runs three simulations for fifty generations. The changes in allele frequency for each simulation are graphed as shown.Determine which allele frequency graph matches which population size.A. Move the correct population size labels into the blank boxes next to the appropriate graphs.B. Move the correct graph number that shows the greatest impact on genetic variation Use only one label in each blank box. - answer-300, 30, 3,000 and 2