Human Body
How does the body maintain homeostasis?
The body maintains homeostasis through feedback mechanisms that regulate internal conditions, such as temperature and pH levels.
What is an autotroph?
An autotroph is an organism that produces its own food, typically through photosynthesis.
What is a gene?
A gene is a segment of DNA that contains the instructions for building proteins and determining traits.
What is a cell membrane?
The cell membrane is a protective barrier that regulates what enters and exits the cell.
What is pollution?
Pollution is the introduction of harmful substances or contaminants into the environment, affecting air, water, and soil quality.
What role do enzymes play in digestion?
Enzymes speed up chemical reactions to break down food into nutrients that can be absorbed by the body.
How do predators affect population dynamics?
Predators help control the population of prey species, which can prevent overpopulation and maintain ecosystem balance.
Define allele
An allele is a variant form of a gene that may result in different traits or characteristics.
What are organelles?
Organelles are specialized structures within a cell that perform specific functions, such as energy production and protein synthesis.
How does climate change affect ecosystems?
Climate change alters weather patterns, affecting species distributions, migration, and ecosystem health.
What system transports oxygen?
The circulatory system transports oxygen from the lungs to body cells and carbon dioxide back to the lungs for exhalation.
What is biodiversity?
Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the number of species and genetic diversity.
What is genetic variation?
Genetic variation refers to the differences in DNA sequences among individuals, contributing to diversity in traits.
What is the function of mitochondria?
Mitochondria are the powerhouses of the cell, generating ATP through cellular respiration.
What is conservation?
Conservation is the sustainable management of natural resources and protection of biodiversity to prevent loss of species and habitats.
Explain the function of the immune system.
The immune system protects the body from pathogens and foreign substances through various cells and antibodies.
Explain the impact of deforestation.
Deforestation leads to habitat loss, decreased biodiversity, and contributes to climate change due to increased carbon dioxide levels.
Explain natural selection
Natural selection is the process by which individuals with favorable traits are more likely to survive and reproduce, passing those traits to the next generation
Describe the process of photosynthesis
Photosynthesis is the process by which green plants convert light energy into chemical energy in the form of glucose, using carbon dioxide and water.
Explain the greenhouse effect.
The greenhouse effect is the warming of Earth’s surface caused by greenhouse gases trapping heat in the atmosphere.
How do hormones affect body functions?
Hormones regulate processes such as growth, metabolism, and mood by signaling cells and organs to perform specific functions.
What role do decomposers play?
Decomposers break down dead organic matter, recycling nutrients back into the ecosystem and aiding in soil fertility.
What are mutations?
Mutations are changes in the DNA sequence that can lead to variations in traits, which may be beneficial, harmful, or neutral.
What is cellular respiration?
Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.
What are invasive species?
Invasive species are non-native organisms that spread rapidly in a new environment, often causing harm to native species and ecosystems.