unit 1

Question 1

Unicellular

Answer 1

having or consisting of one cell

Question 2

Multicellular

Answer 2

composed of many or multiple cells

Question 3

eukrayotic

Answer 3

any organism having as its fundamental structural unit a cell type that contains specialized organelles in the cytoplasm

Question 4

Prokaryoyic

Answer 4

any cellular organism that has no nuclear membrane

Question 5

Anabolism

Answer 5

the synthesis in living organisms of more complex substances from simpler ones

Question 6

Catabolism

Answer 6

destructive metabolism: the breaking down in living organisms of more complex substances into simpler ones, with the release of energy

Question 7

Metabolism

Answer 7

the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available

Question 8

Homeostasis

Answer 8

the tendency of a system to maintain internal stability

Question 9

Nucleotide

Answer 9

any of a group of molecules that when linked together form the building blocks of DNA or RNA

Question 10

Adenine

Answer 10

purine base of the fundamnental components of nucleic acids as DNA

Question 11

Guanine

Answer 11

a purine base that is fundamental for DNA and RNA in which it forms pairs with cytosine

Question 12

Cytosine

Answer 12

a pyrimidine base for DNA and RNA in which it forms base pairs with guanine

Question 13

Thymine

Answer 13

a pyrimidine base for DNA in which it paired with adenine

Question 14

Uracil

Answer 14

a pyrimidine base, fundamental component of RNA in which it forms base pairs with adenine

Question 15

Replication

Answer 15

the process by which double-stranded DNA makes copies of itself

Question 16

Hydrogen bonds

Answer 16

a type of chemical bond in which a hydrogen atom that has a covalent link with one of the electronegative atoms forms an electrostatic link with another electronegative atom in the same or another molecule

Question 17

Autotrophic

Answer 17

any organism capable of self-nourishment by using inorganic materials as a source of nutrients and using photosynthesis as a source of energy

Question 18

Heterotrophic

Answer 18

capable of utilizing only organic materials as a source of food

Question 19

Phylum

Answer 19

the primary subdivision of a taxonomic kingdom

Question 20

Phylogeny

Answer 20

the development or evolution of a particular group of organisms

Question 21

Evolution

Answer 21

change in the gene pool of a population from generation to generation by such processes of mutation, natural selection, and genetic drift

Question 22

Fitness

Answer 22

the genetic contribution of an idividual to the next generation’s gene pool

Question 23

Embryology

Answer 23

the study of embryo’s

Question 24

Biology

Answer 24

the study of life