Cells : The Basic Unit of life

Question 1

Cell

Answer 1

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

Question 2

Cell membrane

Answer 2

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

Question 3

Organelles

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 that has a role in processes such as growth, metabolism, and reproduction.

Question 5

Prokaryotes

Answer 5

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

Question 6

Eukaryotes

Answer 6

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

Question 7

Cell wall

Answer 7

a rigid structure that surrounds the cell membrane and provides support to the cell.

Question 8

Ribosomes

Answer 8

a cell organelle composed of RNA and prone; the side of protein synthesis.

Question 9

Endoplasmic reticulum

Answer 9

a system of membranes that is found in a cell’s cytoplasm and that assists in the producted, processing, and transport of proteins and in the production of lipids.

Question 10

Vesicle

Answer 10

a small cavity or sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surround the materials to be taken into the cell or transported within the cell.

Question 11

Lysosomes

Answer 11

a cell organelle that contains digestive enzymes

Question 12

Tissue

Answer 12

a group of similar cells that perform a common function.

Question 13

Organ

Answer 13

a collection of tissues that carry out a specialized function of the body.

Question 14

Organ system

Answer 14

a group of organs that works together to perform body functions.

Question 15

Orgams

Answer 15

a living things; anything that can carry out life processes independently.

Question 16

Structure

Answer 16

the arrangement of parts in an organism.

Question 17

Function

Answer 17

the special, normal, or proper activity of an organ or part.

Question 18

Mitochondrion

Answer 18

in eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration

Question 19

Golgi complex

Answer 19

cell organelle that helps make and package materials to be transported out of the cell.