cell structure

Question 1

cell size

Answer 1

Cells vary in size. Most cells are very small (microscopic), some may be very large
(macroscopic). The unit used to measure the size of a microscopic cell is micrometer (µm).
→ 1000 µm = 1 millimeter

Question 2

cell shape

Answer 2

Cells vary in shape. Variation depends mainly upon the function of cells. Some cells,
like Euglena and Amoeba, can change their shape, but most cells have a fixed shape.

Question 3

red blood cell

Answer 3

Human Red Blood Cells are circular and
biconcave for easy passage through
human capillaries.

Question 4

microscopes

Answer 4

Microscopy – The science of using microscopes to view samples or objects.
* The development of the microscope in the 1660s increased our understanding of the
human body and led to the discovery of cells.
– There are a variety of microscopes, each displaying a varying degree of
structural detail.

Question 5

microsope-transmission electron

Answer 5

A transmission electron microscope is the most accurate
microscope in existence. Certain cell structures can only be seen with its use

Question 6

microscope-compound or light

Answer 6

The compound (or light) microscope is the most commonly used microscope

Question 7

cell membrane

Answer 7

Organelles are specialized structures in a cell (like an organ in your body). The
existence of organelles enables the compartmentalization of a cell into different
biochemical environments each responsible for a particular cell function.
– The formation of organelles is due to Biological Membranes.

Question 8

what is a cell membrane,cell membranes( semipermeable),membrane(interco

what is a cell membrane

Answer 8

• A Cell Membrane is a barrier that encloses spaces within a cell into compartments,
  creating a boundary between the entire cell and its outside environment (extracellular
  space). These membranes control the flow of materials into and out of the cell.

Cell membranes are semipermeable, which means they allow certain
substances to pass through but not others with the use of proteins.

• These membranes form a system of interconnecting channels within the cell that
  function in the transport of substances and communication from one part of the cell
  to another.

Question 9

why do theses advance protons walk

Answer 9

it has a negitive and postive charge that makes then moves

Question 10

centrosome

Answer 10

Centrosome is an organelle located near the nucleus that organizes the cell’s microtubules

Question 11

Golgi apparatus/mail room

Question 12

what are proteins

Answer 12

Proteins are large, complex molecules that play many critical roles in the body. They
do most of the work in cells and are required for the structure, function, and
regulation of the body’s tissues and organs

Question 13

where are proteins created in ?

Answer 13

proteins are created in ribosomes

Question 14

what are proteins made up of?

Answer 14

They are made up of hundreds or
thousands of smaller units called amino acids, which are attached to one another in
long chains. The sequence of amino acids determines each protein’s unique
3-dimensional structure and its specific function.

Question 15

Proteins are the molecules that perform tasks in the body. Those tasks are:

Answer 15

Enzyme – carry out chemical reactions
Antibody – bind to viruses and bacteria to mark them
Messenger (Hormones) – transmit signals to coordinate
biological processes
Transport/Storage
Structural Component

Question 16

what are the function of the cell membrane

Answer 16

Cell Membrane
– Maintains shape & size of the cell
– Protects internal contents of the cell
– Regulates entry and exit of substances
in and out of the cell

Question 17

what does the centrosome matrix consist of

Answer 17

• The centrosome matrix consists of two structures called centrioles, which are hollow,
  cylindrical structures made up of microtubules, surrounded by a complex of proteins
  that help additional microtubules to form. Found only in animal cells.