Question: Which of the following biomes is characterized by an extremely cold climate, low-growing plants, and a layer of permanently frozen subsoil called permafrost?
Answer Options:
• A. Rain forest
• B. Tundra
• C. Savanna
• D. Temperate forest
Answer: B
Question: Most human cells have 46 chromosomes. How many chromosomes are in a human sperm or egg?
Answer Options:
• A. 92
• B. 46
• C. 23
• D. 12
Answer: C
Question: Which of the following is most likely to cause the extinction of a warm-blooded carnivore?
Answer Options:
• A. An increase in the number of herbivores in the animal’s habitat
• B. A significant alteration or destruction of the animal’s habitat
• C. A small decrease in the annual average temperature of the animal’s habitat
• D. An increase in the average number of offspring that must be fed
Answer: B
Question: Which TWO of the following are examples of structural adaptations?
Answer Options:
• A. Some birds travel in large migratory flocks that may discourage attacks by predators.
• B. Some birds have long, curved beaks that they use to extract nectar from flowers.
• C. Some birds are active mainly at night, which reduces competition for limited resources.
• D. Some birds have webbed feet that allow them to swim and dive efficiently in water.
Answer: B, D
Question: Of the following organisms, which are characterized by bilateral symmetry, bony endoskeletons, and a dependence on external heat sources for regulating body temperature?
Answer Options:
• A. Insects
• B. Sponges
• C. Mammals
• D. Reptiles
Answer: D
Question: Which of the following is considered to be the largest organ of the human body?
Answer Options:
• A. Brain
• B. Skin
• C. Heart
• D. Liver
Answer: B
Question: Which of the following organisms is an invertebrate?
Answer Options:
• A. Insects
Answer: A
Question: Which of the following best explains how a child can inherit a genetic disorder from parents who exhibit no symptoms of the disorder?
Answer Options:
• A. The disorder is caused by a recessive allele, and each parent carries only a single copy of the allele.
• B. The disorder is caused by a dominant allele, and each parent carries at least one copy of the allele.
• C. The disorder is caused by multiple genes, and both parents acquired mutations in those genes before the child was born.
• D. The disorder is caused by a toxin in the environment, and the parents were exposed to the toxin after the child was born.
Answer: A
Question: Which of the following is a way the human body responds to cold environmental temperatures?
Answer Options:
• A. Increased deposits of fat around the internal organs
• B. Involuntary muscular contractions
• C. Irregular heartbeat
• D. Increased perspiration
Answer: B
Question: Which of the following cell structures is the major site of metabolic processes that provide energy for cellular activities?
Answer Options:
• A. Mitochondrion
• B. Nucleus
• C. Cell wall
• D. Vacuole
Answer: A
Question: [ImageDisplayed]
Answer Options:
(Not provided)
Answer: D
Question: A tomato plant’s genetic information is encoded in which of the following?
Answer Options:
• A. Protein molecules
• B. Fat molecules
• C. DNA molecules
• D. Vitamin C molecules
Answer: C
Question: Which of the following taxonomic levels is made up of the most closely related groups of organisms?
Answer Options:
• A. Family
• B. Kingdom
• C. Class
• D. Phylum
Answer: A
Question: The selective breeding of plants and animals is called
Answer Options:
• A. Natural selection
• B. Artificial selection
• C. Stabilizing selection
• D. Disruptive selection
Answer: B