Week 1

Question 1

Evolution leads to both :

Answer 1

Diversity and unity

Question 2

Cells can inherit or obtain DNA from other cells in a number of ways:

Answer 2

• conjugative/transduction
• mitosis
• meiosis
• asexual+sexual reproduction

Question 3

DNA made up of:

Answer 3

Nucleotides

Question 4

Taxonomy is:

Answer 4

The scientific practice of classification of the diversity of biological species is called taxonomy.

Question 5

Biological evolution is :

Answer 5

A process that results in heritable changes in a population over time.

Question 6

Fitness is:

Answer 6

A description of an organism’s ability to survive, reproduce, and contribute to the gene pool of the next generation.

Question 7

Gene flow is:

Answer 7

The process by which genes move between subpopulations of a species through dispersal.

Question 8

Genetic drift us:

Answer 8

Genetic changes in a population due to random processes, such as a founder event, in which only a few individuals (and their specific subset of the genes in a population) start a new population.

Question 9

Macroevolution is:

Answer 9

The evolution of new species or higher taxonomic orders from existing groups.

Question 10

Microevolution is:

Answer 10

Changes to allele frequencies within species or populations.

Question 11

Mutation is:

Answer 11

Accidental changes to a DNA sequence that can provide heritable genetic variation.

Question 12

Natural selection is:

Answer 12

Mechanism of evolution theorized by Darwin and Wallace based on fitness. Individuals with genes that allow them to achieve higher fitness are favored and their genes become proportionally more common in the following generation than individuals with genes that result in lower fitness. Can lead to adaptation to new and changing environments through time.

Question 13

photosynthesis is:

Answer 13

The main source of organic molecules

Question 14

Biochemical cycle is:

Answer 14

A cycle that involves the transfer of biologically important elements and molecules among different reservoirs within the Earth and its atmosphere.

Question 15

Cellular desperation is:

Answer 15

The process through which organic molecules are broken down to release energy.

Question 16

Decomposer is:

Answer 16

An organism that feeds on dead and decaying organic material

Question 17

Energy is:

Answer 17

The capacity to do work

Question 18

Matter is:

Answer 18

anything that has mass and takes up space

Question 19

Metabolism:

Answer 19

Encompasses all chemicals reactions taking place in an organism

Question 20

Organic molecules:

Answer 20

A molecule that contains carbon and hydrogen

Question 21

Photosynthesis:

Answer 21

The process through which carbon dioxide is converted into organic molecules using light as an energy source.

Question 22

Producer:

Answer 22

An organism that converts carbon dioxide into organic molecules through the process of photosynthesis or chemosynthesis.

Question 23

Taxonomy is:

Answer 23

The way to classify groups in biological system