Which of the following best defines endosymbiosis?

This organelle modifies, sorts, and packages proteins and lipids into vesicles for secretion or delivery to other organelles.

A scientist constructs a tree-like diagram showing how different species of bears evolved from a common ancestor over millions of years. This diagram is an example of what concept?

A biologist is studying how different types of cells, such as muscle cells and nerve cells, combine to form structures with specific functions in the human body. At which level of biological organization is this biologist primarily working?

What property describes an atom’s attraction for electrons in a chemical bond, and why is it important?

Which of the following activities is a direct application of taxonomy?

The property of water responsible for the upward movement of water from the roots to the leaves in tall trees is primarily ______.

I will continue to uphold the “Statement on Academic Integrity” and “Test Taking Instructions” described in the “Agreement on Test Taking” document I agreed to.

What is a key defining feature of a eukaryotic cell?

The endosymbiotic theory proposes that chloroplasts evolved from which of the following?