Carbohydrates, lipids, proteins and nucleic acids
Grade 7 Science Worksheet - Challenge Me
Circle the best answer.
A molecule is built from nucleotides and kept in the nucleus. Which molecule is it, Bo?
- An enzyme protein
- A cell membrane lipid
- DNA
- Starch
Which list holds only starchy plant foods, rich in carbohydrates, Jun?
- Brown rice, oats, potatoes
- Canola oil, sunflower oil, oats
- Olive oil, canola oil, sunflower oil
- Olive oil, oats, potatoes
Which list holds only lipids, Kira?
- Brown rice, canola oil, potatoes
- Potatoes, oats, brown rice
- Olive oil, oats, sunflower oil
- Olive oil, canola oil, sunflower oil
Which list holds only plant sources of protein, according to MedlinePlus, Luz?
- Apple juice, table sugar, oil
- Olive oil, beans, soy
- Soy, beans, nut butters
- Canola oil, sunflower oil, soy
Ribosomes join amino acids in a set order to make a protein. Which molecule holds the instructions for that order, Milo?
- A lipid
- Starch
- Another protein, an enzyme
- DNA, a nucleic acid
Chloroplasts make sugar from carbon dioxide and water. To store it, the plant joins many sugars into what, Noah?
- Amino acids, joined into protein
- Cell membranes
- Starch, a carbohydrate
- DNA
MedlinePlus says two of these give the body energy. Which two, Pia?
- Water and DNA
- Fiber and water
- Fiber and nucleic acids
- Carbohydrates and fats
Ren says protein comes from animal foods alone. Agree or disagree?
- Disagree: protein comes from plant oils instead
- Disagree: soy and beans supply protein
- Agree: beans are just starch
- Agree: plants have no protein
Tala says DNA is a kind of protein. Agree or disagree?
- Agree: DNA and enzymes are one thing
- Disagree: DNA is a lipid
- Disagree: DNA is a nucleic acid
- Agree: DNA is built from amino acids
Zee says fats and oils are built from amino acids. Agree or disagree?
- Agree: amino acids build fats too
- Agree: oils are proteins
- Disagree: they are built from nucleotides
- Disagree: they come from glycerol and fatty acids