1. Which of the following types of tissues is responsible for covering and protecting body surfaces? a. Connective tissueb. Nervous tissuec. Epithelial tissued. Muscle tissue Answer: c. Epithelial tissue 2. What is the primary function of nervous tissue in the body? a. Contraction and movementb. Support and structurec. Communication and controld. Secretion of hormones Answer:…
1. What is the term for alternative forms of a gene that occupy the same position on homologous chromosomes? a. Allelesb. Phenotypesc. Genotypesd. Mutations Answer: a. Alleles 2. In a monohybrid cross involving a dominant and a recessive allele, what is the genotype of the offspring if the parents are heterozygous? a. Homozygous dominantb. Homozygous…
1. Which microorganism is commonly associated with the fermentation of dairy products such as yogurt? a. Escherichia colib. Lactobacillusc. Salmonellad. Staphylococcus aureus Answer: b. Lactobacillus 2. What is the primary purpose of pasteurization in food microbiology? a. Enhancing flavorb. Extending shelf lifec. Destroying harmful microorganismsd. Improving texture Answer: c. Destroying harmful microorganisms 3. Which microorganism…
1. What is the primary function of the excretory system in humans? a. Digestion b. Respiration c. Waste elimination d. Blood circulation Answer: c. Waste elimination 2. Which of the following is a nitrogenous waste product commonly excreted by mammals? a. Carbon dioxide b. Urea c. Glucose d. Oxygen Answer: b. Urea 3. Where does…
1. What is the primary mechanism driving evolution, as proposed by Charles Darwin? a. Genetic driftb. Lamarckismc. Natural selectiond. Artificial selection Answer: c. Natural selection 2. Which scientist independently proposed the theory of natural selection around the same time as Charles Darwin? a. Alfred Russel Wallaceb. Gregor Mendelc. Jean-Baptiste Lamarckd. Thomas Malthus Answer: a. Alfred…
1. Which greenhouse gas is primarily responsible for global warming? a. Carbon dioxide (CO2)b. Methane (CH4)c. Nitrous oxide (N2O)d. Ozone (O3) Answer: a. Carbon dioxide (CO2) 2. What is the main cause of deforestation worldwide? a. Agricultural expansionb. Urbanizationc. Loggingd. Industrial pollution Answer: a. Agricultural expansion 3. Which environmental issue is associated with the thinning…
1. Which of the following is a traditional method of plant breeding that involves crossing two varieties with desirable traits to produce offspring with improved characteristics? a. Genetic engineeringb. Hybridizationc. Tissue cultured. Mutation breeding Answer: b. Hybridization 2. In animal husbandry, what is the term for the controlled mating of animals to produce offspring with…
1. What is the primary focus of ecology? a. Human anatomyb. Relationships between organisms and their environmentc. Cellular processesd. Plant classification Answer: b. Relationships between organisms and their environment 2. Which level of ecological organization involves all the interacting populations in a particular area? a. Ecosystemb. Communityc. Biosphered. Population Answer: b. Community 3. What is…
1. Where does the majority of nutrient absorption occur in the human digestive system? a. Stomachb. Small intestinec. Large intestined. Esophagus Answer: b. Small intestine 2. Which enzyme is responsible for the breakdown of starch into maltose in the mouth during digestion? a. Amylaseb. Lipasec. Trypsind. Pepsin Answer: a. Amylase 3. In the stomach, what…
1. Which scientist proposed the chromosome theory of inheritance, suggesting that genes are located on chromosomes? a. Gregor Mendelb. Thomas Hunt Morganc. Alfred Russel Wallaced. Jean-Baptiste Lamarck Answer: b. Thomas Hunt Morgan 2. During which stage of the cell cycle does crossing over occur, promoting genetic recombination? a. Prophase I of meiosisb. Metaphase II of…
