Cell components - Grade 6 (Elementary)

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From 25.55 £ /h

What is a cell?
The cell is the smallest living unit in the body of a living organism, and it is responsible for all vital processes such as growth, reproduction, and respiration.

There are two types of cells:
- Plant cell 🌿
- Animal cell 🐾

Basic cell components:
A cell is made up of a group of parts, and each part has an important function:

- The plasma membrane: It surrounds the cell and controls the entry and exit of substances from it.
- Cytoplasm: A gel-like substance that fills the cell and contains the rest of the components.
- The nucleus: the control center of the cell, containing the genetic material that determines the characteristics of the organism.
- Mitochondria: They produce the energy that the cell needs to function.
- Vacuole: It stores water and nutrients, and is large in plant cells and small or indistinct in animal cells.
- The cell wall: It is found only in plant cells, and it helps to give the cell shape and rigidity.
- Chloroplasts: found in plant cells, they perform photosynthesis to make food using sunlight.

The difference between a plant cell and an animal cell:
Plant cells contain additional components not found in animal cells. For example, the cell wall, which gives it a stable shape and rigidity, and chloroplasts, which enable it to produce its own food through photosynthesis. Also, the vacuole in plants is large and prominent, while in animals it is small or absent.

As for the animal cell, it depends on ready-made food, and it does not contain chloroplasts or a cell wall, and this makes its shape more flexible.

Extra information

Bring your computer, pen, and notebook.

Location

Online from Egypt

About Me

Dr. Hadeer Habka, Science School, follows the same principle as us 💪🏻♥️ She explains integrated science (physics, chemistry, biology) for all levels (secondary, preparatory, and primary) ✅ Recitation after each lesson ✅ Exams and monitoring of student progress ✅ Continuous review ✅ Comprehensive exams with each unit, and I guarantee you the highest grade in integrated science 😊💯

Education

Bachelor of Science and Education
Helwan University
Very good grade with honors
Master's in Curriculum and Methods of Teaching Science
She has completed numerous Egyptian and international courses and certifications.

Experience / Qualifications

7 years of experience teaching the integrated science curriculum for all grade levels
(Secondary - Preparatory - Primary)
Explaining and simplifying the curriculum, conducting comprehensive reviews, and administering exams on an ongoing basis.

🌟 Are you looking for a fun way to understand science?
I am Dr. Hadeer Habka, a teacher of the integrated science curriculum for all educational levels, with experience in teaching and laboratories, and with a style that makes science an exciting adventure!

🔬 Why did you choose me?
- By explaining science in a story-based and interactive way that makes the student love the subject.
- I make every scientific experiment a fun moment of discovery
I use visual aids and educational games suitable for each age group.
I have experience in simplifying complex concepts for children and teenagers.
- And I like to incorporate Egyptian heritage into the explanation in an innovative way (like the pharaohs and ancient scientific wonders!)

🎯 The stages I work with:
From elementary to high school, with methods that suit each age group.

📚 The lessons could be:
Online or in person
Individuals or small groups
- Includes explanations, applications, and interactive questions

Age

Children (7-12 years old)

Teenagers (13-17 years old)

Adults (18-64 years old)

Seniors (65+ years old)

Student level

Beginner

Intermediate

Advanced

Duration

60 minutes

The class is taught in

English

French

Arabic

Skills

Elementary school level

Availability of a typical week

(GMT -04:00)

New York

Online via webcam

Mon

Tue

Wed

Thu

Fri

Sat

Sun

00-04

04-08

08-12

12-16

16-20

20-24

How the body's systems work to meet the needs of living organisms - Fourth Grade - First Semester

25.55 £ /h

How do the body's systems work together?
- The digestive system: It digests food and converts it into simple nutrients (glucose, amino acids, fatty acids) that reach the blood to nourish the cells.
- The respiratory system: Oxygen enters the body and carbon dioxide exits, ensuring the continuation of cellular respiration within the cells.
- The circulatory system (heart and blood vessels): It transports food and oxygen to all parts of the body, and removes waste products such as carbon dioxide and urea.
- The excretory system (kidneys and skin): gets rid of waste products resulting from vital processes such as urine and sweat, in order to maintain the body's internal balance.
- The nervous system: It regulates the functioning of different organs and sends signals to control movement and respond to external stimuli.
- Muscular and skeletal system: Provides movement and support for the body, and helps protect internal organs.
- The immune system: It defends the body against microbes and foreign substances, thus maintaining health.
Summary
Each system has a specific function, but the integration of these systems is what ensures human survival. Digestion provides food, respiration provides oxygen, blood circulation delivers both to the cells, excretion removes waste, and the nervous system coordinates all of this.

Microbes - First Preparatory Grade - First Semester

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What are microbes?
Microbes are microscopic organisms that cannot be seen with the naked eye; some are beneficial and some are harmful.
- They are found in the air, water, soil, and on the bodies of living organisms.

🔬 Types of microbes
Viruses: The smallest living organisms, they cause diseases such as influenza and AIDS.
- Bacteria: Some are beneficial (such as yogurt bacteria), and some are harmful (such as typhoid bacteria).
- Fungi: such as yeast used in bread making, including harmful ones like a fungus that causes skin diseases.
- Protozoa: such as amoebas that cause dysentery.

🌍 Where it is found
- In the soil, water, and air.
- Inside the bodies of living organisms and on their surface.

✅ Benefits of microbes
- Production of some medicines, such as penicillin, from fungi.
- Manufacturing foods such as yogurt and cheese using beneficial bacteria.
- Analysis of organic matter and restoration of elements to the soil.

⚠️ The dangers of microbes
- It causes serious diseases such as: typhoid, dysentery, influenza.
Food spoils when it grows on it.

🛡️ Ways to prevent microbes
- Wash your hands thoroughly before and after eating.
- Keep food in the refrigerator.
- Boil or sterilize the water before drinking.
- Getting vaccinated against diseases

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