1.1 The Diversity of Cells

Question 1

cell

Answer 1

in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and have DNA and cytoplasm

Question 2

cell membrane

Answer 2

a phospholipid layer that covers a cells surface; acts as a barrier between the inside of a cell and the cell’s environment

Question 3

organelle

Answer 3

one of the small bodies in a cell’s cytoplasm that are specialized to perform a specific function

Question 4

nucleus

Answer 4

in a eukaryotic cell, a membrane-bound organelle that contains the cell’s DNA and has a role in processes such as growth, metabolism, and reproduction

Question 5

prokaryote

Answer 5

an organism the consists of a single-cell that does not have a nucleus

Question 6

eukaryote

Answer 6

an organism made up of cells that have a nucleus enclosed by a membrane; eukaryotes include animals, plants, and fungi, but not archaebacteria or eubacteria