1. What does the term “biodiversity” refer to? a. The number of endangered species b. The variety of life on Earth, including genetic, species, and ecosystem diversity c. The total population of a particular species d. The distribution of organisms in a specific region Answer: b. The variety of life on Earth, including genetic, species,…
1. What is the primary mode of action of antibiotics against bacteria? a. Disruption of cell membrane b. Inhibition of protein synthesis c. Inhibition of DNA replication d. Activation of metabolic pathways Answer: b. Inhibition of protein synthesis 2. Which of the following antibiotics is derived from a fungus? a. Penicillin b. Streptomycin c. Tetracycline…
1. What is the primary function of the respiratory system in animals?a. Circulation of bloodb. Digestion of foodc. Exchange of gasesd. Removal of metabolic waste Answer: c. Exchange of gases 2. Which hormone is responsible for regulating blood glucose levels in animals?a. Insulinb. Glucagonc. Thyroxined. Estrogen Answer: a. Insulin 3. In which organ does the…
1. What is the outermost layer of the skin in vertebrates called?a. Dermisb. Epidermisc. Hypodermisd. Mesoderm Answer: b. Epidermis 2. Which type of symmetry is exhibited by animals that can be divided into equal halves along any plane, leading to mirror images?a. Radial symmetryb. Asymmetryc. Bilateral symmetryd. Spherical symmetry Answer: c. Bilateral symmetry 3. What…
1. Which phylum do animals with a segmented body, jointed appendages, and an exoskeleton belong to?a. Molluscab. Arthropodac. Chordatad. Porifera Answer: b. Arthropoda 2. Which class of vertebrates includes animals with an amniotic egg and scales or feathers?a. Amphibiab. Avesc. Mammaliad. Reptilia Answer: d. Reptilia 3. What is the distinguishing feature of animals belonging to…
1. Which of the following is the largest organ in the human body?a. Heartb. Liverc. Skind. Lungs Answer: c. Skin 2. In the human skeletal system, which bone is commonly referred to as the “collarbone”?a. Scapulab. Radiusc. Ulnad. Clavicle Answer: d. Clavicle 3. What is the main function of the respiratory system?a. Pumping bloodb. Digesting…
Answer: d. Carbon monoxide (CO) Answer: c. Burning of fossil fuels Answer: b. Nitrogen oxides (NOx) Answer: d. Particulate matter (PM) from combustion Answer: c. Nitrogen dioxide (NO2) Answer: c. Chlorofluorocarbon (CFC) emissions Answer: c. Ozone (O3) Answer: b. Motor vehicle exhaust Answer: b. Methane (CH4) Answer: b. Deposition Answer: b. Carbon monoxide (CO) Answer:…
