Chem

Question 0

Adenosine Triphosphate (ATP)

Answer 0

Compound that is the important intracellular energy source; cellular energy

Question 1

Acid

Answer 1

Substance that liberates hydrogen ions when in an aqueous solution

Question 2

Base

Answer 2

Substance that accepts hydrogen ions; proton acceptor

Question 3

Carbohydrate

Answer 3

Organic compound composed of carbon, hydrogen, and oxygen; includes starches, sugars, cellulose

Question 4

Enzyme

Answer 4

Substance formed by living cells that acts like a catalyst in bodily chemical reactions

Question 5

Lipid

Answer 5

Organic compound formed of carbon, hydrogen, and oxygen; examples are fats and cholesterol

Question 6

Nucleic Acid

Answer 6

Class of organic molecules that includes DNA and RNA

Question 7

pH

Answer 7

Symbol for hydrogen ion concentration

Question 8

Protein

Answer 8

Complex nitrogenous substance; the main building materials of cells

Question 9

Nucleus

Answer 9

Dense central body in most cells containing the genetic material of the cell

Question 10

Nuclear membrane

Answer 10

double lipid bilayer membrane which surrounds the genetic material and nucleolus in eukaryotic cells

Question 11

Chromatin

Answer 11

Structures in the nucleus that carry hereditary factors (genes)

Question 12

Chromosomes

Answer 12

Barlike body of tightly coiled chromatin; visible during cell division

Question 13

Microvilla

Answer 13

Tiny projections on the free surfaces of some epithelial cells; increase surface area of absorption

Question 14

Cytoplasm

Answer 14

Substance of a cell other than that of the nucleus

Question 15

Cytosol

Answer 15

aqueous component of the cytoplasm of a cell, within which various organelles and particles are suspended

Question 16

Mitochondria

Answer 16

The rodlike cytoplasmic organelles responsible for ATP generation for cellular activities

Question 17

Ribosomes

Answer 17

Cytoplasmic organelles at which proteins are synthesized

Question 18

Endoplasmic reticulum

Answer 18

membranous network of tubular or saclike channels in the cytoplasm of a cell

Question 19

Golgi apparatus

Answer 19

complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport

Question 20

Lysosomes

Answer 20

Organelles that originated from the Golgi apparatus and contain strong digestive enzymes

Question 21

Cytoskeleton

Answer 21

microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence

Question 22

Centrioles

Answer 22

Minute body found near the nucleus of the cell; active in cell division

Question 23

Template

Answer 23

DNA replication each strand of the duplex acts as a template for the synthesis of a new double helix

Question 24

Gene

Answer 24

One of the biological units. Of heredity located in chromatin; transmits hereditary info

Question 25

Anticodon

Answer 25

a sequence of three nucleotides forming a unit of genetic code in a transfer RNA molecule, corresponding to a complementary codon in messenger RNA

Question 26

Epithelial tissues

Answer 26

covers the whole surface of the body. It is made up of cells closely packed and ranged in one or more layers

Question 27

Gland

Answer 27

an organ in the human or animal body that secretes particular chemical substances for use in the body or for discharge into the surroundings

Question 28

Extracellular matrix

Answer 28

collection of extracellular molecules secreted by cells that provides structural and biochemical support to the surrounding cells

Question 29

Tendons

Answer 29

a flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone

Question 30

Ligaments

Answer 30

a short band of tough, flexible, fibrous connective tissue that connects two bones or cartilages or holds together a joint