A human red blood cell has on average a diameter of 7.6 microns (1 micron = 1 µm). What is this in nanometers?

First-division nondisjunction will only yield gametes with an extra chromosome, whereas second-division nondisjunction will only yield gametes missing a chromosome. A. True B. False

What statement about natural selection is true

The electrons in the outermost energy level are called ... ?

Which of the following is true of all geographic locations on Earth? A. They receive the same amount of precipitation over the course of a year. B. They receive the same number of daylight hours over the course of a year. C.

Most animals are producers, meaning they are able to create their own food from inorganic sources.

Organisms that have groups of specialized cells organized into organs are always

What is a cell how does it effect the body

A farmer crossed a yellow maize plant (Yy) with another yellow maize plant (YY). He planted 200 seeds from this cross. How many of the plants would be yellow?

How do the methods of scientists lead to knowledge?

Actions you do without thinking about them