Biology Paper 1

• The human body is made up of trillions of cells, which are the basic building blocks.
• Eukaryotic cells contain DNA stored within a nucleus, as well as membrane-bound organelles such as mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, chloroplasts, and cell wall.
• Prokaryotes have no nucleus or membrane-bound organelles, while eukaryotes do.
• Cells can be classified into two main types - prokaryotic (found in bacteria) and eukaryotic (found in all other organisms).
• Prokaryotic cells lack a true nucleus and have their genetic material (DNA) floating freely in the cytoplasm.
• Bacteria are prokaryotes that can be found everywhere on Earth, including inside our bodies.
• Bacteria are prokaryotes that can be found everywhere on Earth, including inside our bodies.
• Cells can be classified based on their structure into prokaryote (bacteria) and eukaryote (plant/animal).
• Cells can be classified based on their structure into prokaryote (bacteria) and eukaryote (plant/animal).
• Cells can be classified based on their structure into prokaryote (bacteria) and eukaryote (plant/animal).
• Bacteria are single-celled microorganisms that lack a true nucleus and membrane-bound organelles.
• Bacteria are single-celled microorganisms that lack a true nucleus and membrane-bound organelles.
• Viruses are not considered living things because they cannot reproduce or carry out metabolic processes without infecting another cell.
• Animal cells also have a nucleus, but they may not have a cell wall like plant cells.
• Plant cells have a rigid cell wall made from cellulose to support them.
• Plant cells have a large central vacuole filled with water and dissolved substances, surrounded by cytoplasm containing various structures including the nucleus, mitochondria, ribosomes, rough ER, smooth ER, golgi bodies, lysosomes, and plastids.
• The human body contains about 37 trillion cells, with most being eukaryotic cells.
• Animal cells have centrioles involved in cell division, while plant cells do not.
• Plant cells have a large central vacuole that stores water and waste products, while animal cells lack this feature.
• Plant cells have a rigid cell wall made up of cellulose fibers to support them.
• Animal cells do not have a cell wall but instead rely on internal structures like microtubules and intermediate filaments for support.
• Plant cells have a cell wall made up of cellulose fibres which provides support to the plant.
• The cell wall is made up of peptidoglycan, which gives bacteria its shape and protects it from bursting when water enters or leaving when water exits.
• Eukaryotic cells have a true nucleus and membrane-bound organelles such as mitochondria and chloroplasts.
• Animal cells do not have a cell wall but may have a plasma membrane.
• Animal cells do not have a cell wall but may have a plasma membrane.
• Eukaryotic cells contain membrane-bound organelles such as mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, cytoskeleton, cell wall, and plasma membrane.
• Eukaryotic cells contain membrane-bound organelles such as mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, cytoskeleton, cell wall, and plasma membrane.
• Eukaryotic cells contain membrane-bound organelles such as mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, cell wall, cytoskeleton, and centriole.
• Animal cells do not contain chloroplasts as they cannot make food from sunlight like plants.
• The human body is composed of trillions of cells, with different types of cells performing specific functions.
• Plant cells have a rigid cell wall made up of cellulose, which provides support to the plant.
• The human body is made up of trillions of cells, with different types performing specific functions.
• The cell wall is made up of peptidoglycan and provides structural support to the cell.
• Plant cells contain chloroplasts which produce food through photosynthesis using sunlight.
• The cell theory states that all living things are made up of one or more cells, cells come from pre-existing cells, and cells carry out life processes.
• The cell theory states that all living things are made up of one or more cells, cells come from pre-existing cells, and cells carry out life processes.
• Plant cells also have a cell wall outside the plasma membrane to protect them from bursting due to osmosis.
• Plant cells also have a cell wall outside the plasma membrane to protect them from bursting due to osmosis.
• Cells can be classified based on their size, shape, structure, function, and location within an organism.