Cell structure

Question 1

Structure

Lipid bilayer with embedded proteins, external proteins and lipids have sugar groups

Function

Cell barrier, transports substances, receptors, cell recognition

Answer 1

PLASMA MEMBRANE

Question 2

Structure

Everything between nuclear and plasma membrane. Includes cytosol, inclusions, organelles.

Answer 2

CYTOPLASM

Question 3

Structure

Dense particles made up 2 subunits made of rRNA. Attached to rough ER or free.

Function

Protein synthesis

Answer 3

RIBOSOME

Question 4

Structure

Membranes of sacs and tubes, studded with ribosomes. Near nucleus.

Function

Makes proteins and cell membranes

Answer 4

ROUGH ENDOPLASMIC RETICULUM

Question 5

Structure

Membranes folded into sacs and tubes, without ribosomes

Function

Site of lipid and steroid hormone synthesis, lipid metabolism, drug detoxification

Answer 5

SMOOTH ENDOPLASMIC RETICULUM

Question 6

Structure

Stack of smooth membrane sacs close to nucleus

Function

Packages, modifies, segregates proteins for secretion, inclusion, or incorporation

Answer 6

GOLGI APPARATUS

Question 7

Structure

Membranous sacs

Function

Intracellular digestions

Answer 7

LYSOSOMES

Question 8

Structure

Rodlike, inner and outer membrane, inner membrane folded into christae

Function

ATP synthesis

Answer 8

MITOCHONDRIA

Question 9

Structure

Membranous sacs of oxidase enzymes

Function

Detoxification

Answer 9

PEROXISOMES

Question 10

Structure

Actin filaments

Function

Muscle contraction and intracell movement, help form cytoskeleton

Answer 10

MICROFILAMENTS

Question 11

Structure

Protein fibers

Function

Stable cytoskeleton, resist tension forces

Answer 11

INTERMEDIATE FILAMENTS

Question 12

Structure

Cylinders made of tubulin proteins

Function

Support cell and give shape, form centrioles, intracellular and cellular movements

Answer 12

MICROTUBULES

Question 13

Structure

Paired cylinders of microtubules

Function

Organizes during mitosis to form spindle and asters. Bases of cilia and flagella.

Answer 13

CENTRIOLES

Question 14

Structure

Surrounded by nuclear envelope, contains nucleoplasm, nucleouli, chromatin

Function

Control center, transmits genetic info and instructions for protein synthesis

Answer 14

NUCLEUS

Question 15

Structure

Dense spherical bodies, no membrane, in center of nucleus

Function

Makes ribosomes

Answer 15

NUCLEOLI

Question 16

Structure

Granular, threadlike, made of loose DNA strands

Function

Is DNA

Answer 16

CHROMATIN