Levels Of Organization In Living Things

Question 1

Prokaryotic

Answer 1

a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles.

Question 2

Eukaryote

Answer 2

an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus.

Question 3

Unicellular

Answer 3

consisting of a single cell.

Question 4

Multicellular

Answer 4

having or consisting of many cells.

Question 5

Autotrophic

Answer 5

An organism capable of synthesizing its own food from inorganic substances, using light or chemical energy.

Question 6

Heterotrophic

Answer 6

is an organism that cannot manufacture its own food by carbon fixation and therefore derives its intake of nutrition from other sources of organic carbon, mainly plant or animal matter.

Question 7

Sexual reproduction

Answer 7

the production of new living organisms by combining genetic information from two individuals of different types (sexes).

Question 8

Asexual reproduction

Answer 8

is a type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it does not involve the fusion of gametes, and almost never changes the number of chromosomes.

Question 9

Stimuli

Answer 9

a thing or event that evokes a specific functional reaction in an organ or tissue.

Question 10

Homeostasis

Answer 10

the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.

Question 11

Classification

Answer 11

the action or process of classifying something according to shared qualities or characteristics.

Question 12

Cell

Answer 12

a small room in which a prisoner is locked up or in which a monk or nun sleeps.

Question 13

Tissue

Answer 13

any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products.

Question 14

Organ

Answer 14

a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.

Question 15

Organ system

Answer 15

is a group of organs that work together to perform one or more functions.

Question 16

Organism

Answer 16

an individual animal, plant, or single-celled life form.

Question 17

Robert Hooke

Answer 17

Looked at a cork slice under the newly developed microscope. Noticed that it was made up of boxes and named these cells.

Question 18

Antonvan Leeuwenhoek

Answer 18

First person to see bacteria; made observations of various blood cells in fish, birds, frogs, and humans.

Question 19

Mathias seheiden

Answer 19

Concluded that all plant parts are made up of cells.

Question 20

Theodor Schwann

Answer 20

Concluded that all animal tissues are made up of cells; wrote the first two parts of the cell theory.

Question 21

Rudolf virchow

Answer 21

Saw that cells come only from existing cells; wrote the third part of the cell theory.