1) Write down the contribution made by Robert hooke and leeuwenhook in the field of biology 2) Write down the differences between unicellular and multicellular organism 3) What do you understand about the term cell organelle? 4) Write down the differences between plant cell and Animal cell 5) Write down the role of plasma membrane in a cell 6) Define diffusion 7) Define osmosis 8) Differentiate diffusion and osmosis
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" **Anton van Leeuwenhoek** was the first to observe and describe living cells (bacteria and protozoa) using a single-lens microscope. Show more…
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Answer in sentence form and BRIEFLY 1. What are the physical, chemical, and physiological properties of the protoplasm? Will these be basic to the living metabolic processes in both plants and animals? 2. Differentiate osmosis and diffusion. 3. Relate the role of osmosis to the semi-permeability of the cell membrane. 4. What is the difference between phagocytosis and pinocytosis. 5. Give the characteristics of water.
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1. How does the mRNA leave the nucleus if the nucleus is surrounded by the nuclear envelope? 2. Do cells arise spontaneously? Explain why or why not. 3. What are cellular motors known as? Mitochondria? 4. What are cytoplasm, nucleoplasm, stroma, matrix, and cristae? 5. What are the two types of ER and their functions in the cell? 6. Which organelle is known as the powerhouse of the cell? Chloroplasts?
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11. An Amoeba is a unicellular, animal like protist that lives in ponds and streams. According to the cell theory; where did this cell come from? Another pre-existing amoeba cell Energy from the sun that allowed the amoeba to reproduce The nonliving environment A multicellular organism 12. What is & major difference between facilitated diffusion and active transport? Active transport moves substances against the concentration gradient Active transport uses proteins in the process Facilitated diffusion moves molecules through the plasma membrane Facilitated diffusion requires large amounts of energy
Adi S.
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