This is a Clilstore unit. You can .
0:00the cellular level
0:29the individual cell is the unit
0:34structure of all living things an entire
0:37organism may consist of one cell which
0:39is called unicellular or many cells
0:41which is called multicellular and human
0:44beings and other multicellular organisms
0:46these cells tend to be organized in
0:49specific ways a group of like cells
0:51performing a particular function is
0:53referred to as tissue and organ is a
0:56discrete structure composed of several
0:59different tissues an organ system is a
1:01group of organs together performing an
1:04overall function for example the
1:06integumentary musculoskeletal nervous
1:08system circulatory lymphatic respiratory
1:12endocrine urinary reproductive and
1:15digestive the individual organism is a
1:18combination of all of these things as a
1:20discrete and separate entity major
1:23components of a typical animal cell the
1:26cell membrane the cell membrane
1:28surrounds and separates the cell from
1:31its environment the cell membrane allows
1:33certain material to pass through it as
1:35they enter or leave the cell within the
1:38cell is the nucleus which plays a
1:40central role in the cell information is
1:43stored in the nucleus and distributed to
1:46guide the life processes and functions
1:48of the cell within the nucleus as the
1:50chromatin material made up of DNA at the
1:54time of cell division this chromatin
1:56material is aggregated into individual
1:58structures known as chromosomes each
2:01chromosome has a sets of specific genes
2:04the basic units of heredity which are
2:07passed from parents to their children
2:08which determine all the physical and
2:11chemical characteristics of the
2:13individual the nucleus also contains a
2:16nucleolus which is a structure that
2:18creates ribosomes ribosomes are granular
2:21particles which makes proteins they are
2:23often referred to as the protein
2:25factories of the cell they are composed
2:27mainly of nucleic acids which helps make
2:30the proteins needed for many cell
2:32functions they can float freely in the
2:34cell or they can attach to the
2:36endoplasmic reticulum protoplasm the
2:39major substance of the cell is known as
2:41protoplasm it is a combination of water
2:43and materials that have dissolved in the
2:46water outside the cell nucleus
2:47protoplasm is called cytoplasm inside
2:51the cell nucleus protoplasm is called
2:54nucleoplasm organelles within the
2:57cytoplasm certain structures are called
2:59organelles organelles mean little organs
3:03these little organs have unique jobs to
3:05perform the organelles include
3:07structures such as the endoplasmic
3:09reticulum various kind of vacuoles the
3:13Golgi apparatus mitochondria and recent
3:16release let's go through these one by
3:18one the endoplasmic reticulum is a
3:20network of cavities and canals there are
3:23two parts of the endoplasmic reticulum
3:25the rough ER which has ribosomes
3:27attached to it and the smooth ER which
3:30doesn't have ribosomes attached to it it
3:33resembles a circulatory system for an
3:35individual cell it helps in the transfer
3:38of materials from one part of the cell
3:40to the other for example the proteins
3:43that were synthesized by the ribosomes
3:45really endoplasmic reticulum in the form
3:48of vesicles these vesicles are then
3:51transported to the Golgi apparatus which
3:53is a portion of the endoplasmic
3:55reticulum which aids in the final
3:57preparation of the proteins transforming
4:00them into forms that the cells need
4:02mitochondria are the powerhouse of the
4:05cell the mitochondria provide energy
4:07wherever it is needed to carry out the
4:10cellular functions they recharge
4:12adenosine diphosphate molecules also
4:15known as a GP these are molecules with
4:18two phosphates attached to the end of it
4:20die meaning to this has little energy
4:23they transform it to adenosine
4:26triphosphate which is also known as a
4:29EP by attaching the third phosphate tri
4:33meaning three now you have high energy
4:36which can be used for all the cell
4:38functions the more energy a cell needs
4:41the more mitochondria it will contain
4:43centrales centrioles help in the process
4:46of cell division by dividing the
4:48chromosomes and creating two sets for
4:51cell division lysozymes our membranes
4:54which contain enzymes that can help
4:56digest bacteria that made its way to the
4:59cell membrane they can also digest old
5:01or damaged intracellular structures
5:04which is why they are known as the
5:05garbage collectors vacuoles vacuoles are
5:08spaces or cavities within the cytoplasm
5:10they serve as storage for food water or
5:13whatever the cell may need to survive I
5:16would like to thank dr. james ross for
5:17allowing me to use information from his
5:19human anatomy and physiology program you
5:22can click here to find out more alright
5:24guys i really hope you like this video
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