Biology Practice STAAR 16
Quiz by Stacey Reyes
Feel free to use or edit a copy
includes Teacher and Student dashboards
Measure skillsfrom any curriculum
Measure skills
from any curriculum
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
With a free account, teachers can
- edit the questions
- save a copy for later
- start a class game
- automatically assign follow-up activities based on students’ scores
- assign as homework
- share a link with colleagues
- print as a bubble sheet
- Q 1/54Score 0The four butterflies in the illustrations represent the offspring in the F1 generation. Which statement is best supported by the phenotypes of these offspring?29The F1 generation is the result of a dihybrid cross.Two of the offspring in the F1 generation will not be able to reproduce.Two of the offspring in the F1 generation will experience a spontaneous mutation.The F1 generation is composed only of males.
54 questions
Show answers
- Q1The four butterflies in the illustrations represent the offspring in the F1 generation. Which statement is best supported by the phenotypes of these offspring?The F1 generation is the result of a dihybrid cross.Two of the offspring in the F1 generation will not be able to reproduce.Two of the offspring in the F1 generation will experience a spontaneous mutation.The F1 generation is composed only of males.120s
- Q2The 1918 influenza epidemic killed between 50 million and 100 million people worldwide. This epidemic happened near the end of World War 1. More people died from influenza epidemic than were killed in the war. Which of the following explains why this virus was so deadly worldwide?Medical personnel often became ill as a result of exposure to airborne virus particles.Food was scarce because of the war, so people were undernourished, and their immune systems were weakened.All of the answer choices.Infected soldiers returning from the war spread the virus when they coughed.120s
- Q3The amount of energy the producers in this energy pyramid provide the primary consumers is 54,000 Joules. From this amount, 540 joules are provided to the tertiary consumers. Based on the model, how much of the energy was provided to secondary consumers?5,400 J540 J54 J53,460 J120s
- Q4The survival of a species depends on its ability to adapt to changes in the environment. A species must be capable of surviving and reproducing despite changes to food sources, climate, or threats from predators. Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment?Mutations are a source of variation in the species.Mutations are always passed on to subsequent generations of the species.Mutations are the cause of disease in the species.Mutations are not harmful when they occur in somatic cells of the species.120s
- Q5The diagram represents one way an enzyme can be inhibited. Which statement explains the effect of an inhibitor on an enzyme?A substrate will be able to bond with the enzyme.A substrate will be unable to attach to the enzyme.The enzyme will be unable to produce more enzymes.The enzyme will likely be attacked by immune cells.120s
- Q6Four different nucleotides are used as building blocks of DNA. Which of the following can be used to distinguish one nucleotide from another?The nitrogen baseThe length of the phosphate groupthe type of fatty acidThe shape of the deoxyribose sugar120s
- Q7The green frog (Lithobates clamitans) is found in many parts of the United States. The table contains some information about this frog. Why does the ability to lay 1,000 to 5,000 eggs increase the fitness of the species L. clamitans?It increases opportunities for offspring to compete for limited resources.It increases the chance of the recombination of alleles, leading to genetic drift in the population.It increases the probability that moving water will promote gene flow from one population to another.It increases the probability that some offspring will survive long enough to reproduce.120s
- Q8Food webs such as the one shown were first used in 1927 by the animal ecologist Charles Elton. The food web below represents the feeding relationships among organisms in an Alaskan ecosystem. An environmental change that removed which of these organisms from the ecosystem would cause the most instability in the ecosystem?AukletsZooplanktonFoxesSalmon120s
- Q9During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. The release of oxytocin during labor stimulates the smooth muscle tissue in the wall of the uterus. The vigorous contraction of the uterine smooth muscle helps push the baby through the birth canal so that delivery can occur. This process involves the interaction of which organ systems?endocrine and reproductive onlyendocrine, reproductive, and excretoryendocrine and muscular onlyendocrine, muscular, and reproductive120s
- Q10In the early 1990s a scientist hypothesized a link between DNA and the production of proteins in the cytoplasm. However, the fact that DNA could not be found outside the nucleus led scientists to believe that another substance was also involved in the synthesis of protein in the cytoplasm. In the 1940s scientists performed an experiment that ultimately identified the site of protein synthesis. They also identified the molecule responsible for transporting information from the nucleus to the site of protein synthesis. What was this newly identified molecule?ThymineATPa genemRNA120s
- Q11During meiosis, homologous chromosomes exchange genetic material. This exchange of genetic material __increases the genetic variationincreases the haploid number to the diploid numberreduces the probability of mutationsreduces the diploid number to the haploid number120s
- Q12As a fertilized egg divides, the cells differentiate because they ___can clump togethermetabolize sugars rapidlycontain a lipid bilayerhave specific genes activated120s
- Q13The photograph shows monarch butterflies landing on plants where there are thousands of other monarch butterflies. These butterflies feed on milkweed plants as they travel south for the winter, covering distances of 5,000 km or more each year. However, the population of these butterflies has been steadily declining over the last 20 years. What is the most likely reason the population of these butterflies has been declining?The butterflies are evolving to tolerate cold weather in the northern United States and southern Canada.The increase in yearly temperatures has warmed the northern habitatsThe number of bird species evolving to prey on butterflies has increasedThe number of milkweed plants along the butterflies' migratory route has decreased.120s
- Q14Bactrian camels, dromedaries, llamas, and alpacas are all members of the same taxonomic family, Camelidae. Members of this family all have two toes, no hooves, true canine teeth, and a split upper lip. The family Camelidae originated in North America. The physical features of animals in this family and the family's geographical origin provide evidence that all these animals __live in the same type of ecosystemhave a common ancestorhave slowly evolved to become herbivoresexchanged DNA at some point in the past120s
- Q15Which statement best describes the relationship between the products of photosynthesis and the reactants of cellular respiration?The products of photosynthesis change the structure of the reactants in cellular respiration in the presence of light.The products of photosynthesis inhibit the reactants in cellular respiration in the presence of light.The products of photosynthesis serves as the reactants in cellular respiration to provide chemical energy.The products of photosynthesis combine with the reactants in cellular respiration to remove ATP from cells.120s
