unit 2.pptx

•Download as PPTX, PDF•

0 likes•2 views

AditiJoshi99

hhhhhkh

Science

Observed and coined term “cell”
Robert Hooke
He observed cork cells

THE CELL THEORY
1. Cells are the smallest units of life.
2. Cells come only from existing cells
3. Cell is the unit of function of all living cells
Theodor Schwann Matthais Schleidon Rudolf Virchow

Are there exceptions to the cell theory??
No protoplasm No definite nucleus
One celled
Many nuclei
No nucleus

LYSOSOMES
• LYSOSOMES
• Rounded or spherical with single
membrane containing acid hydrolases.
■ Structure: Two subunits- Large
subunit and small subunit
■ Present freely in the cytoplasm.
■ FUNCTION- SITE OF PROTEIN
SYNTHESIS
RIBOSOMES

Centrioles
• Non membranous cell organelle.
• Occur in pairs- diplosome
• Occur at right angles to each other in the
cytoplasm –centrosphere.
• Centriole and centrosphere- centrosome
• Function- initiates cell division

VACUOLES
• Sap filled vesicles in
the cytoplasm
• Bounded by
tonoplast, fluid- cell
sap

NUCLEUS
Structure:
• 1. Nuclear envelope or karyotheca
• 2. Nucleoplasm -karyolymph
• 3. Chromatin net
• 4. Nucleolus
Occurrence:
• Absent in bacteria, BGA
(prokaryotes)
• Present in all eukaryotes

• All images have been downloaded
from Google images for educational
purpose only.

Similar to unit 2.pptx

Cellular structure and functionjmorgan80

Cell structure and functionKhanSaif2

Cell the fundamental unit of life SharanyaS23

cell.pptxKipAizaFernandez

Cell structureVeraAdeel

cell structure in plant pathology and botanyShabbirshaheen

cellthefundamentalunitoflife-180820182355 (1).pdfForYTGaming

Lecture 3 Cell_structure_function.pptMuhammadAbbasWali

Genetics Lab 3-Cell.pptxGavin Malala

cellFUNDAMENTAL UNIT OF LIFE CLASS9 .pptAiswarya Rajesh

Plant & animal cell Gil Buella Remoral

Cell structure and Functionanjuparswan

Lecture 2 tkeee

Cell: The Unit of LifeDrHeenaDevnani

Cell and its organelles Nusrat Gulbarga

Ix ppt CELL- Fundamental unit of lifeAnupreet kaur

Cells2 091001182025-phpapp01Prince Anwar Ali

1.1 cell structureHoang Phuong Linh

Plant & animal cell for discussionGil Buella Remoral

Class8 Science Chapter8 Cell ChandraShekharMaurya5

Similar to unit 2.pptx (20)

Cellular structure and function

Cell structure and function

Cell the fundamental unit of life

cell.pptx

Cell structure

cell structure in plant pathology and botany

cellthefundamentalunitoflife-180820182355 (1).pdf

Lecture 3 Cell_structure_function.ppt

Genetics Lab 3-Cell.pptx

cellFUNDAMENTAL UNIT OF LIFE CLASS9 .ppt

Plant & animal cell

Cell structure and Function

Lecture 2

Cell: The Unit of Life

Cell and its organelles

Ix ppt CELL- Fundamental unit of life

Cells2 091001182025-phpapp01

1.1 cell structure

Plant & animal cell for discussion

Class8 Science Chapter8 Cell

Recently uploaded

Chemistry 4th semester series (krishna).pdfSumit Kumar yadav

Chromatin Structure | EUCHROMATIN | HETEROCHROMATINsankalpkumarsahoo174

Hubble Asteroid Hunter III. Physical properties of newly found asteroidsSérgio Sacani

Lucknow 💋 Russian Call Girls Lucknow Finest Escorts Service 8923113531 Availa...anilsa9823

TEST BANK For Radiologic Science for Technologists, 12th Edition by Stewart C...ssifa0344

Animal Communication- Auditory and Visual.pptxUmerFayaz5

Botany krishna series 2nd semester Only Mcq type questionsSumit Kumar yadav

Botany 4th semester file By Sumit Kumar yadav.pdfSumit Kumar yadav

Presentation Vikram Lander by Vedansh Gupta.pptxgindu3009

Forensic Biology & Its biological significance.pdfrohankumarsinghrore1

GBSN - Biochemistry (Unit 1)Areesha Ahmad

Pests of mustard_Identification_Management_Dr.UPR.pdfPirithiRaju

Isotopic evidence of long-lived volcanism on IoSérgio Sacani

VIRUSES structure and classification ppt by Dr.Prince C PPRINCE C P

Physiochemical properties of nanomaterials and its nanotoxicity.pptxAArockiyaNisha

Zoology 4th semester series (krishna).pdfSumit Kumar yadav

CALL ON ➥8923113531 🔝Call Girls Kesar Bagh Lucknow best Night Fun service 🪡anilsa9823

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000Sapana Sha

All-domain Anomaly Resolution Office U.S. Department of Defense (U) Case: “Eg...Sérgio Sacani

Pests of cotton_Borer_Pests_Binomics_Dr.UPR.pdfPirithiRaju

Recently uploaded (20)

Chemistry 4th semester series (krishna).pdf

Chromatin Structure | EUCHROMATIN | HETEROCHROMATIN

Hubble Asteroid Hunter III. Physical properties of newly found asteroids

Lucknow 💋 Russian Call Girls Lucknow Finest Escorts Service 8923113531 Availa...

TEST BANK For Radiologic Science for Technologists, 12th Edition by Stewart C...

Animal Communication- Auditory and Visual.pptx

Botany krishna series 2nd semester Only Mcq type questions

Botany 4th semester file By Sumit Kumar yadav.pdf

Presentation Vikram Lander by Vedansh Gupta.pptx

Forensic Biology & Its biological significance.pdf

GBSN - Biochemistry (Unit 1)

Pests of mustard_Identification_Management_Dr.UPR.pdf

Isotopic evidence of long-lived volcanism on Io

VIRUSES structure and classification ppt by Dr.Prince C P

Physiochemical properties of nanomaterials and its nanotoxicity.pptx

Zoology 4th semester series (krishna).pdf

CALL ON ➥8923113531 🔝Call Girls Kesar Bagh Lucknow best Night Fun service 🪡

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

All-domain Anomaly Resolution Office U.S. Department of Defense (U) Case: “Eg...

Pests of cotton_Borer_Pests_Binomics_Dr.UPR.pdf

unit 2.pptx

1. Observed and coined term “cell” Robert Hooke He observed cork cells

3. THE CELL THEORY 1. Cells are the smallest units of life. 2. Cells come only from existing cells 3. Cell is the unit of function of all living cells Theodor Schwann Matthais Schleidon Rudolf Virchow

4. Are there exceptions to the cell theory?? No protoplasm No definite nucleus One celled Many nuclei No nucleus

5. Can we see cells?

7. LYSOSOMES • LYSOSOMES • Rounded or spherical with single membrane containing acid hydrolases. ■ Structure: Two subunits- Large subunit and small subunit ■ Present freely in the cytoplasm. ■ FUNCTION- SITE OF PROTEIN SYNTHESIS RIBOSOMES

8. Centrioles • Non membranous cell organelle. • Occur in pairs- diplosome • Occur at right angles to each other in the cytoplasm –centrosphere. • Centriole and centrosphere- centrosome • Function- initiates cell division

9. VACUOLES • Sap filled vesicles in the cytoplasm • Bounded by tonoplast, fluid- cell sap

10. NUCLEUS Structure: • 1. Nuclear envelope or karyotheca • 2. Nucleoplasm -karyolymph • 3. Chromatin net • 4. Nucleolus Occurrence: • Absent in bacteria, BGA (prokaryotes) • Present in all eukaryotes

11. Chromatin, chromosome, chromatids

12.

13. • All images have been downloaded from Google images for educational purpose only.

unit 2.pptx

Recommended

Recommended

More Related Content

Similar to unit 2.pptx

Similar to unit 2.pptx (20)

More from AditiJoshi99

More from AditiJoshi99 (8)

Recently uploaded

Recently uploaded (20)

unit 2.pptx