Cells

Question 1

Humans are made of _____ of cells

Answer 1

Trillions

Question 2

Can be thought of as tiny packages that contain minutes factories, warehouses, transport systems, and power plants.

Answer 2

Cells

Question 3

They function on their own, creating their own energy, and self-replicating

Answer 3

Cells

Question 4

Smallest unit of life that can replicate

Answer 4

Cells

Question 5

Who discovered cells?

Answer 5

Robert Hooke

Question 6

What year was the cells discovered?

Answer 6

1665

Question 7

Origin name of the cells

Answer 7

small rooms

Question 8

Cell that looks like a tadpole

Answer 8

Sperm Cell

Question 9

Cell that is spherical

Answer 9

Egg Cell

Question 10

Cells that are thin tubes

Answer 10

Nerve Cells

Question 11

Can be thought as of the cells’ headquarters

Answer 11

Ribosomes

Question 12

A molecule that contains the instructions an organism needs to develop, live, and reproduce. These instructions are found inside every cell, and are passed down from parents to their children.

Answer 12

Deoxyribonucleic acid (DNA)

Question 13

Sends out message to tell the cell to grow, divide, or die.

Answer 13

Nucleus

Question 14

The nucleus is separated from the rest of the cell by a membrane called _____

Answer 14

The nuclear envelope

Question 15

Contains one or small, dark-staining, essentially round bodies called nucleoli (“little nuclei”)

Answer 15

Nucleolus

Question 16

Sites where structures called ribosomes are assembled

Answer 16

Nuclei

Question 17

Most ribosomes eventually migrate into _____, where they serve as the actual process of protein synthesis

Answer 17

Cytoplasm

Question 18

When cell is not dividing, its DNA is carefully wound around the proteins called _____ to form a loose network of “beads on a string” called ____ that is scattered throughout the nucleus

Answer 18

Histones

Chromatine

Question 19

When a cell is dividing to forms 2 daughter cells, the chromatin threads coil and condense to form dense, rod like bodies called _____

Answer 19

Chromosomes

Question 20

To ensure each cell remains separate from its neighbor, it is enveloped in a special membrane known as the ____

Answer 20

Plasma Membrane

Question 21

Plasma membrane contains a range of receptors, which carry out a number of tasks including being:

These receptors act as name badges, informing the immune system that they are part of the organism and not a foreign invader.

Answer 21

Markers

Question 22

Plasma membrane contains a range of receptors, which carry out a number of tasks including being:

some receptors allow certain molecules through and stop others.

Answer 22

Gatekeepers

Question 23

Plasma membrane contains a range of receptors, which carry out a number of tasks including being:

Some receptors help the cell communicate with other cells and the environment

Answer 23

Communicators

Question 24

Plasma membrane contains a range of receptors, which carry out a number of tasks including being:

Some receptors help bind the cell to its neighbors

Answer 24

Fasteners

Question 25

The structure of plasma membrane consist of 2 phospholipids

Answer 25

Fluid Mosaic Model

Question 26

Commonly displayed by the epithelial cells

Answer 26

Plasma Membrane

Question 27

tiny finger-like projections that greatly increased the cell’s surface area for absorption.

Answer 27

Microvilli

Question 28

are impermeable junctions that bind cells together into leak-proof sheets that prevent substances from passing through

Answer 28

Tight Junctions

Question 29

anchoring junctions that prevent cells subjected to mechanical stress from being pulled apart.

Answer 29

Desmosomes

Question 30

Fuse together tightly like a zipper

Answer 30

Plasma Membrane

Question 31

Commonly seen in the heart and between embryonic cells, function mainly to allow communication

Answer 31

Gap Junctions

Question 32

Chemical molecules such as nutrients or ions, can pass directly from one cell to another through them

Answer 32

Gap Junctions

Question 33

Hollow cylinders composed of proteins that span the entire width of the abutting membranes

Answer 33

Connexons

Question 34

the interior of the cell that surrounds the nucleus and is around 80% of water

Answer 34

Cytoplasm

Question 35

Jelly like fluid

Answer 35

Cytosol

Question 36

many of the important reactions that take place in the cell occur in this area

Answer 36

Cytoplasm

Question 37

essentially bags of enzymes

Answer 37

Lysosomes and Peroxisomes

Question 38

contain enzymes that break down large molecules, including the old parts of the cells and foreign material

Answer 38

Lysosomes

Question 39

contains enzymes that destroys toxic materials, including peroxide

Answer 39

peroxisomes

Question 40

considered the scaffolding of the cell. It helps to maintain the correct shape.

Answer 40

Cytoskeleton

Question 41

Also helps in cell signaling through its involvement in the uptake of material from outside the cell and is involved in moving materials around within the cell

Answer 41

cytoskeleton

Question 42

uptake of material from outside the cell

Answer 42

endocytosis

Question 43

tiny bi-lobbed, dark bodies made of proteins and one variety of DNA called ribosomal DNA

Answer 43

Ribosomes

Question 44

read the RNA and translate it into protein by sticking together amino acids in the order defined by RNA

Answer 44

Ribosomes

Question 45

It is a system of fluid-filled tunnels(canals) that coils and twist through the cytoplasm

Answer 45

Endoplasmic Reticulum

Question 46

serves as mini circulatory system for the cell because it provides a network of channels for carrying substances (primarily proteins) from one part of the cell to another

Answer 46

Endoplasmic reticulum

Question 47

it synthesizes, folds, modifies, and transport protein

Answer 47

Endoplasmic reticulum

Question 48

the ER is made up of elongated sacs, called _____, held together by the skeleton

Answer 48

cisternae