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What are Meristematic Tissues? | Don't Memorise

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Apical meristematic tissue: Apical meristematic tissue is found in all higher plants.

Lateral meristematic tissue: Lateral meristematic tissue occurs only in trees, shrubs, and some grasses.

Location
Apical meristematic tissue: Apicalmeristematic tissue is located at the top of the root and stem and their branches.

Lateral meristematic tissue: The lateral meristematic tissue forms cylinders located parallel to the long axis of the stems and roots.

Types
Apical meristematic tissue: Depending on its location, the apical meristematic tissue is root apical meristematic tissue or stem apical meristematic tissue.

Lateral meristematic tissue: The lateral meristematic tissues are cambium, phellogen (cork cambium), procambium, pericycle.

Growth
Apical meristematic tissue: The apical meristematic tissue contributes to the growth of roots, stems, and their branches in length, forms primordia of leaves and lateral buds.

Lateral meristematic tissue: The lateral meristematic tissue is responsible for the plant widening/thickening.

Formed tissues
Apical meristematic tissue: The apical meristematic tissue forms the xylem, phloem, epidermis, and ground tissue.

Lateral meristematic tissue: The lateral meristematic tissue forms wood, inner bark, and outer bark.

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Xylem and Phloem - Transport in Plants | Biology | FreeAnimatedEducation

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That's all about muscle tissues and cells

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That's all about muscle tissues and cells

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Thank you for lending us your ears

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Difference between pinocytosis and phagositosis

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Difference between pinocytosis and phagositosis

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(a) Voluntary or involuntary based on function,
(b) Striated or smooth based on structure.

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Rough Endoplasmic Reticulum Structure and Function | Rough ER Simplified

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Smooth Endoplasmic Reticulum Function and Structure | Cell Biology Simplified

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1. Please write your name
2.Based on this video, identify what you should present? Must include which subtopic
3. Please state your presentation should include what? ( example: function/location/ characteristics)
4. Please share your presentation template at this platform. (drawing/ power point/mind map)

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Chapter 2: Cell structures & functions- structure & functions organelle 2 #learnbiology #learnontiktok #tiktok_guru #gurumalaysia

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@biowithmdmnashimah
Chapter 2: Cell structures & functions- structure & functions organelle 2 #learnbiology #learnontiktok #tiktok_guru #gurumalaysia
♬ Suspense - Dreamtime

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granule : a small compact particle of a substance

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Chapter 2 EP 21 / Sem 1: Vascular Tissues (Xylem & Phloem) Plant Tissues & Cells (Matriculation Bio)

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Function
-Transport water & minerals from root to other parts of plant
-Give mechanical support (lignified vessels & tracheid can resist compression & tension)
-Parenchyma stores food
-Fibres provide support

Distribution
-Vascular bundle

**Xylem is called dead tissue or non-living tissue, because all the components present in this tissue are dead, except xylem parenchyma.

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-No nucleus (dead cells) at maturity
-Shorter & wider than tracheid
-Tubular / less tapered than tracheid
-Wide empty lumen
-Thick lignified secondary wall
-Both ends are highly perforated/open
-Cells are stacked from end to end to form a continuous hollow tube
-Pits are present to allow lateral movements of water

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-No nucleus (dead cells) at maturity
-Elongated, thin
-Tapered ends which overlap & interlock with one another
-Small empty lumen
-Thick lignified secondary wall
-Have pits in cell walls
-Which allow water to flow from 1 tracheid to the other

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Consist of 4 tissues ~> tracheid, vessel, fiber & parenchyma

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-transport water
-complex tissues
-tube shaped cell
-dead at functional maturity

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2.3 Describe the structure, function & distribution of plant tissues ~ xylem and floem

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2.3 Describe the structure, function & distribution of plant tissues ~ xylem and floem

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WHAT IS NEURON ?

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LOW TEMPERATURE

kinetic energy low

causing phospholipid clustering together

decreasing membrane fluidity

HIGH TEMPERATURE

kinetic energy high

have enough energy to overcome the intermolecular forces

increasing fluidity

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FACTORS AFFECTING CELL MEMBRANE FLUIDITY

1.  temperature

2. saturation of fatty acid tails

3. cholesterol content of the bilayer

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Cell membrane fluidity | Cells | MCAT | Khan Academy

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phospholipid tails can be saturated or unsaturated

Saturated tails have no double bonds and as a result have straight, unkinked tails. Unsaturated tails have double bonds and, as a result, have crooked, kinked tails

saturated phospholid can easily packed together decreasing the fluidity

the kinks makes the unsaturated phospholipid cannot pack together , increasing fluidity

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TYPES OF MEMBRANE PROTEIN

1.  integral protein

embedded to the phospholipid bilayer

2. peripheral protein

not embedded to the phospholipid bilayer

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FUNCTIONS

act as a buffer to stabilized the membrane as the temperature changes

when temperature low , it prevent them from clustering together, increasing fluidity

when the temperature is high, it increases its melting point, pulls the phospholipid together, decreasing fluidity

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Colorful Blob Organic and Handcrafted Classroom Health and Safety High School Back to School Poster (4)

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Colorful Blob Organic and Handcrafted Classroom Health and Safety High School Back to School Poster (3)

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Colorful Blob Organic and Handcrafted Classroom Health and Safety High School Back to School Poster (2)

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Colorful Blob Organic and Handcrafted Classroom Health and Safety High School Back to School Poster

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Colorful Blob Organic and Handcrafted Classroom Health and Safety High School Back to School Poster (1)

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FIVE TYPES OF LEUKOCYTES.CLASSIFIED AS EITHER: GRANULOCYTE OR AGRANULOCYTE

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-heve nuclei and mitochondrian but lack pigment of hemoglobin
-manufactured in bone marrow

GRANULOCYTES
-large,lobed nuclei and distinctive granules in their cytoplasm

AGRUNULOCYTES
-lack large distinctive granules
-nuclei are rounded or kidney-shaped
LYMPHOCYTES: T-lymphocytes & B-lymphocytes

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We captured a paramecium undergoing exocytosis & expelling waste.

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-bioncave shape=high ratio of surface area to volume         allowing efficient diffusion
-during maturation they lose their nucleus , mitochondrian and endoplasmic reticulum

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Pinocytosis: liquid internalization explained with living cells

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Human Blood Video | Blood Components | Blood Cells

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Types of Epithelial Tissue | Animal Tissues | Don't Memorise

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-as connective tissue because contain abundant extracellular material ,fluid plasma (matrix)
-plasma consist of water,salts,and dissolved proteins
-plasma from which fibronogen and other clothing factor have been removed is called the SERUM
-suspended in plasma are erythrocytes,leukocytes and platelet

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Definision :

A process in which large, solid particles is taken into the cell

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Amoeba eats  paramecia ( Amoeba's lunch ) [ Amoeba Endocytosis / Phagocytosis  Part 1 ] 👌

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volkmann canals=any of the small channels in the bone that transmit blood vessels from the periosteum into the bone

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Definition :

A process in which dissolved solutes are taken into the cell