Question

1. what type of molecule are enzymes?

○ carbohydrates
○ lipids
○ proteins
○ nucleic acids

1. where is a strawberry’s dna located?

○ in the seeds.
○ in the cell membrane.
○ in the nucleus of each cell.
○ in the red part of the strawberry.

1. which of these biomolecules contain the elements carbon, hydrogen and oxygen?

Explanation:

Question 8:

Enzymes are biological catalysts, and most enzymes are proteins. Some RNA molecules (ribozymes) can act as enzymes, but the most common type of enzyme - containing molecules are proteins. Carbohydrates are mainly for energy storage or structural purposes, lipids are for energy storage, cell membranes, etc., and nucleic acids store and transmit genetic information. So the correct option is the one with proteins.

DNA (deoxyribonucleic acid) is the genetic material of the cell. In eukaryotic cells (like strawberry cells, which are eukaryotic), the DNA is mainly located in the nucleus of each cell. Seeds are part of the plant, cell membranes have lipids and proteins mainly, and the "red part" is the fruit flesh, not the main location of DNA. So the correct option is "In the nucleus of each cell".

Carbohydrates have the general formula $C_n(H_2O)_m$, so they contain C, H, O. Lipids are made of fatty acids and glycerol, containing C, H, O (and sometimes P, N). Proteins contain C, H, O, N (and sometimes S). Nucleic acids contain C, H, O, N, P. So all of carbohydrates, lipids, proteins, and nucleic acids contain C, H, O. But if we consider the common ones, carbohydrates are a classic example. (Since the question is cut off, but based on the start, we can infer the answer related to biomolecules with C, H, O. For example, carbohydrates, lipids, proteins, nucleic acids all have C, H, O. But if the options were like the previous ones, we can conclude that biomolecules like carbohydrates, lipids, proteins, nucleic acids contain C, H, O. )

Answer:

The option with "proteins" (the second option, as per the image: the one with the protein icon and label "proteins")

Question 9: