QUIZ 1.1

Question 1

Major Parts of the cell all contribute to the cell’s maintenance and survival

Answer 1

• Plasma membrane
• cytoplasm
• cytoskeleton
• cell wall

Question 2

The cell consists of both ___ and _____ organelles

Answer 2

membrane-bound and nonmembrane-bound

Question 3

Is a jelly-like structure composed of semi-fluid cytosol where all organelles and other cellular contents are immersed or suspended

Answer 3

Cytoplasm

Question 4

is made up of peptidoglycan in bacterial
cells and cellulose in plant cells. It gives a rigid
structure for the cell and prevents it from bursting.

Answer 4

Cell wall

Question 5

is mostly composed of phospholipids. It serves as the primary barrier of the cell and is semi-permeable in nature.

Answer 5

plasma membrane

Question 6

is composed of microtubules, microfilaments, and intermediate filaments. The cytoskeletal elements provide support and framework and facilitate motility in cells.

Answer 6

cytoskeleton

Question 7

all the living matter in a cell

Answer 7

Protoplasm

Question 8

The ____ is the cell’s primary barrier.

Answer 8

plasma membrane

Question 9

____ or _____ separates the cytoplasm from external
environment.

Answer 9

Cell / Plasma membrane

Question 10

The membrane comprises the following:

Answer 10

❖ glycolipids
❖ glycoproteins
❖ phospholipids
❖ cholesterol
❖ membrane proteins

Question 11

Phospolipid head consists of____ & ____

Answer 11

■ phosphate group
■ hydrophilic

Question 12

The phospolipid tails consists of ____ & ___

Answer 12

■ two fatty acid chains
■ hydrophobic

Question 13

two phospholipid layers:

Answer 13

two phospholipid layers
■ Phosphate heads.
■ Fatty acid tails

Question 14

face the cytoplasm and the cell’s exterior.

Answer 14

Phosphate heads

Question 15

are sandwiched.

Answer 15

Fatty acid tails

Question 16

describes the membrane structure.

Answer 16

fluid mosaic model

Question 17

due to its natural viscosity

Answer 17

fluidity

Question 18

is an important, property of the lipid bilayer, in which it only allows certain molecules to move into,and out of the cell.

Answer 18

Selective permeability

Question 19

Transport proteins in the membrane may either be in the form of ___ or ___

Answer 19

Carrier / Channel protein

Question 20

passageway of certain molecules

Answer 20

Channel Protein

Question 21

change conformation to transport molecules

Answer 21

Carrier P.

Question 22

detect invading
pathogens

Answer 22

cell recognition p.

Question 23

binding of molecules to trigger response

Answer 23

receptor p.

Question 24

This consists of a network of protein fibers that gives the cell its structural framework.

Answer 24

Cytoskeleton

Question 25

also serves other functions such as **movement of organelles, macromolecules, and chromosomes**.

Answer 25

cytoskeleton

Question 26

Microtubules consist of helically arranged globular proteins called ____

Answer 26

Tubulin

Question 27

A ____ is a helix of ɑ-tubulin and β-tubulin subunits.

Answer 27

microtubule

Question 28

Microfilaments consist of long fibers of ____, making them the thinnest cytoskeleton.

Answer 28

Actin proteim

Question 29

● They help facilitate cell and organelle **movement.** ● They can help **change the shape** of the cell.

Answer 29

Microfilaments

Question 30

● Helps maintain cell shape ● Anchors the nucleus

Answer 30

Intermediate Filaments

Question 31

provide **structural integrity** to the plasma membrane

Answer 31

Intermediate filaments

Question 32

The **cytoskeleton** has 3 major parts:

Answer 32

- Microtubules - Microfilaments - Intermediate Filaments

Question 33

This is where all different subcellular structures are suspended.

Answer 33

Cyctoplasm

Question 34

Cytoplasm is composed of the _____, a semifluid solution that consists of water and inorganic and organic molecules.

Answer 34

Cytosol

Question 35

_____ is a rigid structure that surrounds the cell membrane. ● It helps maintain the shape of cells and prevent them from bursting.

Answer 35

Cell wall

Question 36

Most **bacteria** have cell wall made up of ____.

Answer 36

peptidoglycan

Question 37

The cell wall in some **fungi** consists of ___

Answer 37

chitin

Question 38

in Plant cells, the **cell wall** consists of ____

Answer 38

mesh-like cellulose fibers

Question 39

It is a major organelle that is composed of hydrophilic heads and hydrophobic tails.

Answer 39

Plasma Membrane

Question 40

of different molecules such as **proteins, sugars, and cholesterol**

Answer 40

mosaic

Question 41

the “___” in the fatty acid tails of the phospholipids

Answer 41

kinks

Question 42

the molecules which act as **regulators of fluidity**

Answer 42

cholesterol