Cell Structure
Resumen
Everything a living thing does, it does with cells. A cheek cell, an oak leaf cell and a cell buried in the root of a daffodil are all built from the same short list of parts, arranged differently and used for different jobs. Learn that list properly and a great deal of the rest of biology stops being memory work and starts being reasoning.
In this lesson you will name the parts of animal and plant cells and say what each one does. You will see why a plant cell carries three extras that an animal cell does not, and why one of those three is missing from some plant cells and not others. Then you will practise the skill the examiners really want: looking at an unfamiliar cell, spotting what it has an unusual amount of, and working out what that cell must be for.
Objetivos
- Most animal cells (eukaryotic cells) have the following parts: a nucleus, which controls the activities of the cell ; cytoplasm, in which most of the chemical reactions take place; a cell membrane, which controls the passage of substances into and out of the cell; mitochondria, which is where most energy is released in respiration.
- In addition to the above, plant cells (eukaryotic cells) often have: chloroplasts, which absorb light energy to make food; a permanent vacuole filled with cell sap. Plant and algal cells also have a cell wall made of cellulose, which strengthens the cell.
- Cells may be specialised to carry out a particular function. Students should be able, when provided with appropriate information, to relate the structure of different types of cell to their function in a tissue, an organ, or the whole organism.
Mapa mental
Este tema esta esquematizado para ver como se conectan las ideas.
Abre el mapa mental en la app
Nota de la lección
Apunte completo disponible en la aplicacion Green Bridge
Instala la aplicacion Green Bridge CBT en tu movil u ordenador para acceder a toda la biblioteca IGCSE: examenes anteriores, criterios de correccion, mapas mentales, tarjetas de estudio y lecciones en audio.
Evaluación de la lección
Felicitaciones por completar la lección del Cell Structure. Ahora que has explorado el conceptos e ideas clave, es hora de poner a prueba tus conocimientos. Esta sección ofrece una variedad de prácticas Preguntas diseñadas para reforzar su comprensión y ayudarle a evaluar su comprensión del material.
Te encontrarás con una variedad de tipos de preguntas, incluyendo preguntas de opción múltiple, preguntas de respuesta corta y preguntas de ensayo. Cada pregunta está cuidadosamente diseñada para evaluar diferentes aspectos de tu conocimiento y habilidades de pensamiento crítico.
Utiliza esta sección de evaluación como una oportunidad para reforzar tu comprensión del tema e identificar cualquier área en la que puedas necesitar un estudio adicional. No te desanimes por los desafíos que encuentres; en su lugar, míralos como oportunidades para el crecimiento y la mejora.
- Which part of a cell controls the passage of substances into and out of it? A. The nucleus B. The cell wall C. The cell membrane D. The cytoplasm Answer: C
- Which structure is found in a plant cell but NOT in an animal cell? A. A permanent vacuole B. A nucleus C. A mitochondrion D. A cell membrane Answer: A
- What is the cell wall of a plant cell made of? A. Cell sap B. Cytoplasm C. Cellulose D. Starch Answer: C
- A cell taken from the root of a plant contains no chloroplasts. What is the best explanation? A. Root cells are not plant cells B. No light reaches the root C. Roots do not take in water D. Chloroplasts are found only in animal cells Answer: B
- A cell contains a very large number of mitochondria. What does this suggest? A. It stores a lot of water B. It releases a lot of energy by respiration C. It photosynthesises rapidly D. It has a very thick cell wall Answer: B
Resuelve estas preguntas en la aplicacion
Resuelve estas preguntas en la aplicacion
Libros Recomendados
Practica preguntas simuladas
¿Quieres practicar preguntas simuladas sobre Cell Structure? Descarga la aplicación Green Bridge CBT para acceder a preguntas simuladas y evaluaciones completas sobre este tema.
Descarga la aplicación en Google Playstore.
Todo lo que necesitas para destacar en JAMB, WAEC y NECO.
