Chapter 1 Test

Question 0

formed body with specialized functions suspended in the cytoplasm of eukaryotic cells

Answer 0

organelles

Question 1

two or more atoms held together by covalent bonds

Answer 1

molecule

Question 2

life’s fundamental unit of structure and function

Answer 2

cells

Question 3

integrated group of cells with a common function, structure, or both

Answer 3

tissues

Question 4

a group of organs that work together in performing vital body functions

Answer 4

organs and organ systems

Question 5

an individual living thing

Answer 5

organism

Question 6

a localized group of individuals that belong to the same biological species (capable of interbreeding and producing fertile offspring)

Answer 6

population

Question 7

all the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction

Answer 7

community

Question 8

all the organisms in a given area as well as the abiotic factors with which they interact; a community and it’s physical environment

Answer 8

ecosystem

Question 9

then entire portion of earth inhabited by life; the sum of all the planet’s ecosystems

Answer 9

biosphere

Question 10

When referring to the hierarchy of life, how are these levels of biological organization related?

Answer 10

molecules make organelles, organelles make up cells, cells make up tissues, and so on

Question 11

Explain the difference between prokaryotic cells and eukaryotic cells.

Answer 11

prokaryotic cells have no definite boundary or membrane; eukaryotic cells do.

Question 12

How do DNA molecules relate to proteins?

Answer 12

nucleotides code with specific proteins

Question 13

What are the main criteria for separating plants, fungi, animals, and bacteria into kingdoms?

Answer 13

single cellular vs. multicellular organisms

Question 14

Name 7 groupings for the taxonomic scheme from largest to smallest.

Answer 14

kingdom, phylum, class, order, family, genus, species

Question 15

Describe Darwin’s theory of natural selection.

Answer 15

Population of organisms leads to hereditary variations, over production, and competition which lead to differences in reproductive success. All of this leads to evolution of adaptations in the population.

Question 16

Referring to natural selection, how did the sea horse begin to look like sea weed?

Answer 16

reproductive success of organisms with traits that are best suited to their environments.