Chapter 1-intro To Biology

Question 1

What is Taxonomy?

Answer 1

Is the identification, classification and naming of species

Question 2

The hierarchy of classification of biology is

Answer 2

•domain
•kingdom
•phylum
•class
•order
•family
•genus
•species

Question 3

The taxonomy of a human is

Answer 3

•domain-Eukarya
•kingdom-Animalia
•phylum-Chordata
•class-mammalian
•order-primates
•family-hominidae
•genus-homo
•species-sapiens

Question 4

What is biology?

Answer 4

Scientific study of life!

-Life: composed of the same chemical elements are non living things
-Life: obeys the same physical and chemical laws that govern everything in the universe.

Question 5

CHARACTERISTICS OF LIFE

Answer 5

1. Organized
2. Energy Utilization
3. Homeostasis
4. Reproduction
5. Respond to stimuli 6. Evolutionary adaptation

Question 6

Neon has an atomic number of 10. How many electrons would you find in its valence (outermost) shell?

Answer 6

8

Question 7

True or False?

Ionic bonds are formed when electrons are shared between atoms.

Answer 7

False. It’s the complete transfer or electrons from one molecule to another.

Question 8

If In a chemical reaction a chemical element loses an electron, that means it is now ________

Answer 8

Oxidized

Question 9

There are how many naturally occurring elements?

Answer 9

98

Question 10

Definition of acid

Answer 10

Molecule that donates hydrogen ions and increases the concentration of hydrogen ions in a solution.

Question 11

Adhesion is

Answer 11

The attraction between water molecules and other molecules

Question 12

Aliphathic hydrocarbon

Answer 12

Hydrocarbon consisting of a linear chain of carbon atoms

Question 13

An atom is

Answer 13

The smallest unit of matter that retains all of the chemical properties of an element

Question 14

Atomic mass is

Answer 14

The calculated mean of the mass number for an elements isotopes

Question 15

The definition of an atomic number is

Answer 15

The total number of protons in an atom

Question 16

A base is

Answer 16

A molecule that donates hydroxide ions or otherwise binds excess hydrogen ions and decreases the hydrogen ions’ concentration in a solution

Question 17

A buffer is

Answer 17

A substance that prevents a change in pH by absorbing or releasing hydrogen or hydroxide ions

Question 18

A calorie is

Answer 18

The amount of heat required to change the temperature of one gram of water by one degree Celsius

Question 19

Capillary action occurs because

Answer 19

Water molecules are attracted to charges on the inner surfaces of narrow tubular structures such as glass tubes, drawing the water molecules to the tubes’ sides.

Question 20

A ____ is a positive ion that is formed by an atom losing one or more electrons

Answer 20

cation

Question 21

A _______ is the interaction between two or more of the same or different atoms that results in forming molecules

Answer 21

chemical bond

Question 22

A process that changes the arrangement of atoms in molecules is called a

Answer 22

chemical reaction

Question 23

The ability to combine and to chemically bond with each other is called

Answer 23

chemical reactivity

Question 24

The intermolecular force between water molecules caused by the poldar nature of water resulting in surface tension is called

Answer 24

cohesion

Question 25

This substance is composed of molecules consisting of atoms from at least 2 different elements

Answer 25

Compound