The ___ of the cell directs cell activity and acts like the control center

A. nucleolus

B. ribosome

C. nucleus

D. mitochondrion

Linnaeus's hierarchical system of classification includes seven levels. What is each of these levels referred to as? A. taxon B. order C. class

Scientists believe that the first life forms to appear on planet Earth were probably similar to which modern organisms?

What was Griffith's explanation for the experiment's results

You are looking at tissue under a microscope. One cell shows half the amount of DNA of some of the other cells. This cell is most likely to be in which phase of the cell cycle?

Why do all the Outer planets (Gas Giants) have thick atmospheres?

How many chromosomes in a human

Which term refers to a species creating more offspring than can possibly survive?

Which of these serves as a reference for comparison during a scientific investigation? Outcome variable (dependent variable) Test variable (independent variable) Control group Hypothesis

What effect will a virus in the lysogenic cycle have on an organism?

A sentence using hydrotropism