Biology Terms

Question 1

Homeostasis

Answer 1

a state of internal balance within an organism

Question 2

Gene

Answer 2

A specific stretch of DNA that codes for a trait. There are hundreds of these on one chromosome

Question 3

Homozygous

Answer 3

having two of the same forms of a gene. Ex BB or bb

Question 4

Pathogenic

Answer 4

capable of causing disease

Question 5

Adaptation

Answer 5

Any favorable inherited trait that helps an organism survive

Question 6

Semi-permeable

Answer 6

Allowing some substances to pass through while excluding other substances from doing so

Question 7

eukaryotic

Answer 7

having a nucleus

Question 8

prokaryotic

Answer 8

lacking a nucleus

Question 9

taxonomy

Answer 9

the science of classifying organisms

Question 10

phenotype

Answer 10

an organism’s physical appearance. Ex: curly hair

Question 11

genotype

Answer 11

An organism’s genetic make-up. ex. BB, Bb or bb

Question 12

allele

Answer 12

a form of a gene. ex. the allele for brown eyes

Question 13

dominant

Answer 13

a gene you only need one copy of in order to express it. This type of gene is indicated by a capital letter

Question 14

recessive

Answer 14

a gene you need two copies of in order to express it. this type of gene is indicated by a lowercase letter

Question 15

heterozygous

Answer 15

having two different forms of a gene. ex Bb

Question 16

homozygous

Answer 16

having two of the same forms of a gene. Ex. BB or bb

Question 17

diffusion

Answer 17

random movement from an area of high concentration to an area of low concentration

Question 18

osmosis

Answer 18

the diffusion of water

Question 19

unicellular

Answer 19

consisting of one cell. Ex an amoeba is a unicellular organism

Question 20

multicellular

Answer 20

having more than one cell. Ex, Humans are multicellular organisms