Introduction of Biology and Chemistry Basics

Chemical elements ______ in an ecosystem.

The atomic number of an atom is 14. The atomic mass is 29. How many electrons are in this atom?

____ is a structure found in ALL cells.

What are the products in this reaction?

____________ molecules are molecules that did not interact with water and do not have a charge.

In a controlled experiment, what factor is the only factor that is different between two groups?

The e.negativities of fluorine & hydrogen are 3.98 & 2.55. If covalent bonded together, which atom who have the electron

All the energy used in biology originates from _______.

This bond is an attraction between two oppositely charged atoms.

A herd of deer is an example of this level of biological organization.

_____ is when water is attracted to other polar molecules. This allows water to move up plants.

Plants are in this domain.

One characteristic of life is __

Name an abiotic factor in the photo.

Chromosomes are organized into units of hereditary known as ____________.

__________ are the positive particles in the nucleus of an atom.

A solution with a pH of 3 is considered a/n ______________.

There are 6 elements that makes up 98% of all living materials. Name one.

Is this atom reactive?

_____ came up with the Theory of Evolution by natural selection.