IntSci II NGSS Pre-Test

Ava is helping her younger sister with her science homework. She asks, "Which atomic model is considered the most accurate today?"

• Bohr model

• Plum pudding model

• Quantum mechanical model

• Dalton model

Kai and Mason are building a model of a water molecule. They notice that the atoms in the molecule are held together by sharing electron pairs. What type of bond is this?

• Ionic

• Covalent

• Metallic

• Hydrogen

James is helping his younger sibling with a science project. He explains that the unique identity of each element on the periodic table is determined by a specific subatomic particle. Which subatomic particle is James referring to?

• Electron

• Neutron

• Proton

• Nucleus

Michael is packing identical boxes with apples. He starts with a certain number of apples and wants to make sure that after packing, the number of apples in all the boxes combined is the same as the number he started with. In this scenario, the number of apples before and after packing must be:

• Equal

• Greater on the right

• Greater on the left

• Unchanged

During a cold evening, Priya lights a campfire and feels warmth coming from the flames. Which of the following best describes what is happening in this situation?

• Absorbs energy

• Releases energy

• Requires sunlight

• Only occurs in plants

Hannah is baking bread and learns that adding yeast helps the dough rise faster because it contains enzymes. What is the role of enzymes in this process?

• Slow them down

• Change the reaction

• Speed them up

• Make them irreversible

Aria is learning about how plants make their own food. She wonders which part of the plant cell is responsible for photosynthesis. Where does photosynthesis occur?

• Mitochondria

• Ribosome

• Chloroplast

• Nucleus

Scarlett is helping her teacher set up a science experiment with plants. She learns that during photosynthesis, plants absorb a certain gas from the air. What gas do plants absorb during photosynthesis?

• Oxygen

• Hydrogen

• Nitrogen

• Carbon dioxide

Avery is running a marathon and needs energy to keep going. How does cellular respiration benefit Avery during the race?

• Produces oxygen

• Releases energy from food

• Uses sunlight

• Absorbs carbon dioxide

Charlotte is studying biology and wants to understand which macromolecule in our cells is most involved in storing genetic information. Which macromolecule should she focus on?

• Proteins

• Lipids

• Nucleic acids

• Carbohydrates