There are 64 codons in the genetic code and there are only 45 distinct types of tRNA. These 45 types of tRNA are enough to translate all 64 codons.
Explain how this is possible.

What is the difference between bacterial infections and viral infections?

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses