Mia is preparing a large batch of cookies and needs 4.6 kg of flour. How many grams of flour does she need?

Hannah is filling up water bottles for a school event. She has a large container with 65.8 L of water. How many milliliters of water does she have?

During a science class, Zoe asked her teacher what the nucleus of an atom contains.

During a science fair, Isla was asked to identify the negatively charged subatomic particles in atoms. What should she answer?

In a science class, Harper is learning about atoms. Her teacher asks her, "Harper, can you tell me what the atomic number of an atom represents?"

James is curious about the components of an atom while studying chemistry. He wants to understand what the atomic mass of an atom is.

Kai is learning about the periodic table in his chemistry class and encounters Chlorine, which has an atomic number of 17 and an atomic mass of 35. How many electrons does a neutral atom of Chlorine have?

While playing with water, Aiden noticed that water droplets tend to merge together on a surface. This tendency of water molecules to stick to each other is referred to as:

Priya is studying the properties of water for her science project. Which of the following statements about water is true?

In a science experiment, Aiden is trying to make a sugar solution. He adds sugar to a glass of water and stirs it until the sugar disappears. In this scenario, what is the sugar considered as?

Oliver is working on a project that involves measuring large distances. He needs to convert the measurements into the metric system and wants to know the prefix for 1000 in the SI system. Can you help him?

While working on a science project, Charlotte noticed that when she poured water onto a glass surface, the water spread out and stuck to the glass. This tendency of water molecules to stick to another substance is referred to as:

During a chemistry class, Oliver learned that a _____ is composed of covalently bonded atoms with a fixed composition.

During a biology class, Liam was asked to identify which of the following is NOT a biological macromolecule. He was given the options:

During a chemistry class, Charlotte asked the teacher about the major difference between organic and inorganic compounds. The teacher explained that

During a biology class, Grace asked her teacher about the type of bond that holds amino acids together in a protein. What is the correct answer?

Abigail is working on a project about the SI system in her science class. She needs to find out the prefix for 0.000001. Can you help her?

During a biology class, Daniel was asked to identify which of the following is not a macromolecule. What should he choose?

David is organizing his digital photo collection and wants to know the prefix for 1,000,000,000 bytes in the SI system. What is it?

During a cooking class, Avery learned that carbohydrates in foods are polymers made of monomers called

During a science fair, Aiden is presenting his project on the building blocks of proteins. He explains that proteins are polymers formed of structural units called

During a biology class, Kai was learning about protein structures. He discovered that globular proteins are examples of which level of protein structure?

Aria is studying biology and wants to understand the role of nucleic acids in living organisms. Which of the following is(are) a function of nucleic acids in living things?

Kai is preparing a presentation on nutrition and is learning about triglycerides. Which of the following statements about triglycerides is true? Select all that apply.

Ethan is measuring the amount of water needed to fill a swimming pool. What is the SI base unit of volume he should use?

Sophia is learning about different types of fats in her nutrition class. She discovers that lipids with double bonds between some of their carbons are said to be:

In a biology club meeting, Aria is asked to explain the composition of a phospholipid. What should Aria say?

Harper is learning about carbohydrates in her biology class. She wants to know what the name for a dimer in the carbohydrate category is. Can you help her?

Grace is planning a picnic and wants to pack foods that are rich in starches and sugars. These foods belong to which group of organic compounds?

When Grace uses a special tool to speed up a chemical reaction in her science experiment,

In her biology class, Maya is exploring the fundamental components of DNA. Her teacher asks, "Which of the following are components of a nucleotide?" (Select all that apply)

In a science experiment, Ava is studying how enzymes work. She learns that the active site of an enzyme is

Nora is learning about chemistry and discovers that a Carbon atom can form 4 covalent bonds. Is this true?

During a biology class experiment, Luna was asked to demonstrate how certain reactions occur in the body. She explained that some reactions use water to break down polymers. What type of reactions was Luna describing?

Maya is studying cell biology and wants to understand the function of mitochondria. Which of the following functions do mitochondria perform? (select all that apply)

In a biology class, Charlotte is learning about cell structures. Her teacher explains that one part of the cell is responsible for lipid synthesis. Which part is it?

In a biology class, Benjamin is learning about cell structures. His teacher asks him, "Benjamin, can you tell us what the main function of the rough endoplasmic reticulum is in terms of production?"

In a school science project, Scarlett is explaining the function of the Golgi apparatus in a cell. What does she say it does?

During a biology class, Liam and Arjun were discussing the fundamental principles of life. Which of the following statements are components of cell theory?

In Sophia's biology class, they learned about plant cells and their structures. She discovered that plant cells often have a large membrane-bound sac used for storing water and other substances. This organelle is called a

During a biology class, Priya was asked which structure in the cell acts as the repository of the genetic information that directs all of the activities of the cell. What should she answer?

In a biology class, Mia was asked where ribosomes are produced in the cell. What is the correct answer?

Lily is trying to understand why her plant is not growing well. She thinks it might be due to the type of soil she is using, but she hasn't tested this idea yet. What is this idea called? 

Aria is conducting a science experiment. Which of these is NOT true about her hypothesis?

When Nora conducts her science experiment, she makes sure to take more careful and precise observations. Does this provide stronger evidence for her conclusions?

Elijah and Olivia are working on a science project to understand why certain plants grow faster in sunlight. They form ____ to explain this natural phenomenon supported by repeated observations and experiments.

In a hypothesis the ______ variable is what is being tested, while the ______ variable is the one being measured in response.

Biology is the study of life and living organisms. Experimentation is one method by which biologists pursue scientific explanations. When other scientist can copy the experiment, it is said to be _________.

Read the following description of a research project:

A group of researchers noticed that Ponderosa pine trees had more bark beetle damage during and after the 2011-2016 drought. In a greenhouse, researchers grew pine trees in the presence of beetles under two kinds of conditions - Condition A: low water, mild temperatures and Condition B: high water, mild temperatures. They tallied the number of places on the tree trunks that beetle damage was observed. They determined that trees in Condition A had 28.4 damaged places per tree on average and trees grown in Condition B had an average of 18.2 beetle damage spots per tree. The researchers concluded that trees that are drought-stressed are more susceptible to bark beetle damage.

Which step in the scientific method is missing from this description?

If a company claims that its new vaccine has been scientifically proven effective against the flu, which of the following should have taken place before you would trust taking the vaccine?

A _ is a testable prediction

What must a hypothesis be in order to be considered scientific?

Information gathered from observing a plant grow 3 cm over a two-week period is called

Which of the following is a characteristic of a saturated fat?

What is the primary function of carbohydrates in the human body?

Which of the following is a property of enzymes?

Which of the following is a characteristic of a covalent bond?

Which of the following is NOT a property of water?

During a biology lesson, Emma learned that the powerhouse of the cell, responsible for producing energy, is known as the

During a chemistry lesson, Olivia learned about the pH scale. What is the pH of a neutral solution?

In a science class, Noah is studying the structure of DNA and Rna. What are the building blocks of DNA and RNA called?

In a biology class, Liam is learning about the structure of DNA. Which of the following components is not part of a nucleotide?

During a chemistry lesson, Olivia is asked to identify the type of bond formed when atoms share electrons. What should she choose?

In a science class, Noah is learning about the periodic table. His teacher asks him, "Noah, can you tell me which element has the atomic number 6?"

During a chemistry experiment, Olivia observed that a substance dissolved in water and formed a solution. What type of bond is most likely present in the solute molecules?

In a biology class, Noah learned about the process by which plants convert sunlight into chemical energy. What is this process called?

In a chemistry class, Olivia is learning about the states of matter. Which of the following is not a state of matter?

During a biology class, Liam was asked to identify the type of bond that holds the two strands of DNA together. What should he answer?

In a chemistry class, Emma learned about the pH scale. She wants to know what a pH of 1 indicates. Can you help her?

During a physics class, Noah was asked to identify the SI base unit for Length. What should he choose?

In a biology class, Noah is learning about the process by which plants convert sunlight into chemical energy. What is this process called?

How many meters are in a kilometer?

What is true of the SI (International System of Measurement)? Mark all that apply.

What happens to the remaining G3P molecules after the Calvin cycle produces six molecules of G3P but uses only one to form carbohydrates?

The products of the light-dependent reaction of the photosynthesis is:

The electrons in Photosystem I comes from....

Which membrane protein complex produces ATP as H+ ions move down their concentration gradient during cellular respiration?

Oxidation is ....

Where do the light-dependent reactions of photosynthesis take place?

Imagine you're walking in a garden and notice how lush and green the plants look on a sunny day. A curious friend asks you, “I know plants use sunlight for photosynthesis, but where do they get the electrons needed to start the process? Do you know?"