Chemistry of Life
This molecule makes up about 60–70% of the human body and is essential for life.
water
This is the day-to-day condition of the atmosphere, including temperature, wind, and precipitation.
weather
Which organelle is found in plant cells but not in animal cells and is responsible for photosynthesis?
chloroplast
This tiny particle has a positive charge and is found in the nucleus of an atom.
proton
This term describes the long-term average weather conditions in a region over many years.
climate
This element can form four covalent bonds and is the backbone of all organic molecules.
carbon
The uneven heating of Earth's surface by the Sun causes this, which helps create weather patterns.
wind (or air movement
This rigid outer layer gives plant cells support and protection but is not found in animal cells.
cell wall
This subatomic particle has no electric charge and is also located in the nucleus.
neutron
These gases trap heat in Earth's atmosphere and contribute to the greenhouse effect.
greenhouse gases
Water molecules stick to each other because of this property, creating surface tension.
cohesion
When warm, moist air rises, cools, and water vapor condenses, these form.
clouds
Both plant and animal cells contain this organelle, which controls the cell's activities and stores DNA.
nucleus
The atomic number of carbon is 6. How many protons does a carbon atom have?
6 protons
This human activity is the largest source of carbon dioxide released into the atmosphere.
burning fossil fuels
A substance with a pH less than 7 is called this.
acid
A cold front moving into an area often brings this type of weather.
thunderstorms, heavy rain, or cooler temperatures?
Plant cells usually have one large ____________, while animal cells have several smaller ones used for storage.
vacuole
This subatomic particle has no electric charge and is also located in the nucleus.
electron
This natural process traps some of the Sun's heat and keeps Earth warm enough to support life.
greenhouse effect
The four major carbon-based macromolecules found in living organisms are these.
What are carbohydrates, lipids, proteins, and nucleic acids?
This process powers Earth's weather by causing unequal heating of land, water, and air.
energy from the Sun (solar energy)
Name two structures that are found in both plant and animal cells.
cell membrane, nucleus, mitochondria, ribosomes, cytoplasm, endoplasmic reticulum, Golgi apparatus, or vacuoles?
An atom has 17 protons, 18 neutrons, and 17 electrons. Name the element and calculate its mass number.
17 + 18 = 35, chlorine
Name two effects of climate change.
What are rising sea levels, melting glaciers, stronger storms, more heat waves, changing precipitation patterns, or increased droughts?