Warm-Up (11/2) Answer the following questions, and explain in a complete sentence why each answer is correct. Name Date Period The nucleus is responsible for all the following except A. housing chromosomes. B. storing DNA. C. digesting bacteria. D. housing the nucleolus. Proteins are synthesized, packaged, and exported from a cell using all the following organelles except  A. endoplasmic reticulum. B. Golgi Apparatus. C. mitochondria. D. ribosomes.

Cellular Transport The phospholipid Hydrophilic head Hydrophobic tail

Cellular Transport Responsible for taking nutrients in and out Hydrophilic head Responsible for taking nutrients in and out Hydrophobic tail Hydrophilic head Plasma membrane = Phospholipid bilayer Hydrophobic tail

Diffusion: movement across a concentration gradient. Concentration gradient: direction from high concentration to low concentration across a membrane High concentration Low concentration

Why is water not able to pass through the middle of the phospholipid bilayer? Water is not able to pass through the middle of the phospholipid bilayer because…

What is the structure of the phospholipid bilayer? The structure of the phospholipid bilayer is…

Closure Answer the following question in a complete sentence: Name Date Period What about the structure of the plasma membrane prevents water from escaping from the cell? The plasma membrane structure has _______________ which prevents water from escaping the cell because… Scale from 1-10