Review for Unit 3

The correct answer is 'abiotic' because it refers to the nonliving components of an ecosystem, such as air and water, which are essential for supporting life.

A biodome is a closed ecosystem created by humans, designed to replicate natural environments. Unlike Earth, which is a planet, or biopic and mitosis, which are unrelated concepts, biodomes specifically refer to human-made ecosystems.

A decomposer breaks down dead matter, recycling nutrients back into the ecosystem. Unlike consumers and producers, decomposers play a crucial role in energy storage by converting organic material into energy storage molecules.

The term 'biotic' refers to all living components in an ecosystem, including both living organisms and the remains of dead organisms. In contrast, 'abiotic' refers to non-living factors, making 'biotic' the correct choice.

Photosynthesis occurs in the chloroplasts, which contain chlorophyll to capture light energy. Mitochondria are for respiration, the nucleus houses DNA, and ribosomes synthesize proteins, making chloroplast the correct answer.

The chemical reaction that occurs when oxygen and glucose combine to release energy is called cellular respiration. This process is essential for producing ATP, the energy currency of cells.

The question asks for a molecule made of carbon and oxygen atoms. Carbon dioxide (CO2) is a well-known molecule consisting of one carbon atom and two oxygen atoms, making it the correct answer. The other options do not fit this description.

A consumer is an organism that must eat other organisms to obtain energy and nutrients. In contrast, producers create their own energy through photosynthesis, and decomposers break down dead matter.

The correct answer is 'energy storage molecule' because it refers to molecules like glucose that organisms use to store and release energy necessary for survival.

Cellular respiration occurs in the mitochondrion, which is known as the powerhouse of the cell. It converts nutrients into energy, unlike chloroplasts, which are involved in photosynthesis.