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1. Why is the cell membrane said to be semipermeable ?

1. Why is the cell membrane said to be semipermeable ?. The cell membrane allows all substances to pass through it. The cell membrane does not allow anything to pass through it. The cell membrane allows only nutrients to pass through it.

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1. Why is the cell membrane said to be semipermeable ?

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  1. 1. Why is the cell membrane said to be semipermeable? The cell membrane allows all substances to pass through it. The cell membrane does not allow anything to pass through it. The cell membrane allows only nutrients to pass through it. The cell membrane allows only certain substances to pass through it.

  2. 3. Which statement about cells is true? • Some unicellular organisms can be seen with the unaided eye. • All the cells in a multicellular organism are large enough to be seen with the unaided eye. • One cell cannot perform all the functions needed to sustain life. • The cell theory applies only to animal cells.

  3. 4. Which process is responsible for the increase in the size of a cell? • Reproduction • Growth • Mitosis • Meiosis

  4. 6. What is the correct definition of a cell? • The cell is a structure that contains a nucleus. • The cell is the smallest unit of matter that can carry on all the processes of life. • The cell is the unit of structure and function that is identical in all living things. • The cell is the unit of life that can grow but not divide.

  5. 7. What is the name of the process that refers to the division of a cells nucleus? • Homeostasis • Mitosis • Respiration • Chromosome duplication

  6. 9. Which structure allows some protists to manufacture their own nutrients? • Nucleus • Ribosome • Chloroplast • pseudopod

  7. 10. Which of these processes do animals use to make reproductive cells? • Cellular respiration • Homeostasis • Meiosis • Protein synthesis

  8. 11. Which cell structures are involved in protein synthesis? • Cell wall • Ribosomes • Mitochondria • vacuoles

  9. 13. Euglena are able to make their own food by carrying out photosynthesis. What is the source of energy for the process of photosynthesis? • Sunlight • Carbon dioxide • Glucose • Water

  10. 14. What is the green pigment that captures the energy of sunlight that euglena use for photosynthesis? • Chlorophyll • Chloroplast • Glucose • Cellulose

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