Unit 2: cells

Question 1

This is how our body keeps everything balanced and just right

Answer 1

Homeostasis

Question 2

• (Ex-o-sy-TOE-sis) - is when a cell expels things, like waste or chemicals, by packing them in a little bubble and sending them out of the cell.

Answer 2

Exocytosis

Question 3

(En-do-sy-TOE-sis) is when a cell large molecules, fluids, or even entire microorganisms by wrapping its membrane around them and bringing them inside.

Answer 3

Endosytosis

Question 4

Chromosomes are thread-like structures in the nucleus of cells that carry genetic information. A chromosome consists of a long strand of DNA containing many genes.

Answer 4

Chromosome

Question 5

Deoxyribonucleic acid (DNA) is a molecule made up of nucleotides that contains genetic information for cell growth, division and function.

Answer 5

DNA

Question 6

A gene is a segment on a chromosome that determines a specific trait. Genes are the units of heredity

Answer 6

Gene

Question 7

a different form or version of a gene usually occur in pairs

Answer 7

allele

Question 8

a gene variant that is expressed more strongly than other versions of the same gene - the dominant allele masks the effect of the recessive allele

Answer 8

dominant

Question 9

a gene that is masked by a dominant gene, and is only expressed when two copies of the gene are present

Answer 9

recessive