1 or 3 codons equal one amino acid

Which statement about biomes is true? A. Different biomes share similar plants and wildlife. B. Each biome has only one ecosystem. C. There are only three biomes on the Earth. D. Biomes are determined by climate zones.

What animal can only eat with its head upside down?

3. Stars end their lives as What?

Which of the following is true about larger cell

Fredrick is doing a lab on pH. He uses many household items to determine the pH of his items. Which of his actions best describes inappropriate lab safety? He changes into closed-toed shoes before lab starts.

In guinea pigs coat color is determined by a single gene with two alleles. A guinea pig from a true-breeding black strain is mated with a guinea pig from a true-breeding white strain. The F1 progeny are all black.

Desert plants are characterized by A) broad leaves. B) fibrous roots. C) succulent stems. D) deciduous leaves.

If a cell was observed under the microscope and found to have a rigid cell wall and be green in color that cell is most likely a

How can scientist determine the age of a petrified wood? O Growth rings indicate how old the plant was. The size of the petrified wood can indicate its age. O The condition it was found can identify its ages.

How are stem cells similar to cancer