7th Grade SGO Pretest

What two substances do your cells need for energy?

• Oxygen and Food

• Oxygen and Water

• Sleep and Air

• Methane and Hydrogen Sulfide

Your digestive system breaks down food and helps turn it into energy. But how do those food molecules get delivered to every cell in the body?

• By the respiratory system

• By the circulatory system

• By teleporation

• By pooping

When we burn fat, the fat molecules react with oxygen. We then breathe out:

• Carbon Dioxide and Water

• Oxygen and Methane

• Fire

• Smoke

During the chemical reaction Cellular Respiration, oxygen and glucose react to create a molecule of pure energy called ____.

• DNA

• ATP

• Fat

• Starch

An organism that can make its own food

• autobot

• heterotroph

• autotroph

• heterobot

Location inside of a plant cell where the process of photosynthesis occurs.

• nodules

• stomata

• chloroplasts

• chlorophyll

Pigment which 'fills' chloroplast. This pigment absorbs sunlight.

• nodules

• stomata

• chlorine

• chlorophyll

A process plants use to turn sunlight into food: Conversion of light energy from the sun into chemical energy (stored in glucose).

• toxoplasmosis

• photosynthesis

• aqua-synthesis

• homeosynthesis

Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Amensalism

This photo is showing the same ecosystem in 2 scenarios: one with the sea otter and one without the sea otter. In the ecosystem without the sea otter, the ecosystem dynamics are completely changed. What term best describes the sea otter?

• Niche

• Climax community

• Pioneer species

• Keystone species