General Biology Quiz: What Do You Know?

Explanation
Crabs, crayfish, shrimp, and barnacles belong to the group of animals called arthropoda. Arthropoda is a phylum that includes a wide range of invertebrate animals characterized by having jointed appendages and a hard exoskeleton. These animals have a segmented body and are found in various habitats, including oceans. They play important ecological roles and are economically significant as well.

Explanation
Caterpillars live in a cocoon for part of their life during the process of metamorphosis. They start as eggs, hatch into caterpillars, and then form a protective covering called a cocoon or chrysalis. Inside the cocoon, the caterpillar undergoes a transformation and eventually emerges as a butterfly or moth. This stage of being enclosed in a cocoon is a crucial part of their life cycle.

Explanation
Proteins are manufactured by ribosomes. Ribosomes are small cellular structures responsible for protein synthesis. They are found in all living cells and play a crucial role in translating the genetic information stored in DNA into functional proteins. Ribosomes are composed of RNA and proteins and can be found either freely floating in the cytoplasm or attached to the endoplasmic reticulum. They work by reading the messenger RNA (mRNA) sequence and assembling amino acids in the correct order to form a protein chain. Therefore, the correct answer is ribosome/ribosomes/Ribosome.

Explanation
The correct answer is 206, two hundred and six. This is because the adult body is composed of 206 bones.

Explanation
A mutation is a change in the DNA of a cell. This change can occur due to a copying error during DNA replication, exposure to chemicals or radiation that can damage the DNA, or a mutation that is present in the germ line and can be passed on to offspring.