Who was the first person to see and identify cells?

a

Matthias Schleiden

b

Robert Hooke

c

Anton van Leeuwenhoek

d

Robert Brown

How would the position of the anthers (either above or below the stigma) affect what happens to the pollen produced by anthers? Explain.

All the biological macromolecules contain Carbon, hydrogen and oxygen. However, most do not contain nitrogen. The category that contains nitrogen are A) lipids. Eliminate B) proteins. C) carbohydrates. D) unsaturated fats.

1. Which of the following is the best evidence that two birds belong to the same species? A. The two birds eat the same food. B. The two birds have common behaviors. C. The two birds are the same size and color. D.

It is often easier to determine if an object or organism possesses the characteristics of life rather than life itself. true or false

Explain the differences between the central nervous system and the peripheral nervous system.

Which is a valve between the right atrium and the right ventricle of the heart that directs blood that needs oxygen to the lungs.

How are archaeans most similar to bacteria?

What is the size of a mistletoe plant

Fast moving electrons travel through the empty space surrounding the nucleus. How are electrons held within the atom?

Study island classification of organisms and animal diversity