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Bio Boot Camp. Cells. Sample Question 1. Which of the following is an example of homeostasis found in your body? a. you eat food because it tastes good b. you shiver because you are cold c. you stay well because you take antibiotics when you’re sick
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Bio Boot Camp Cells
Sample Question 1 Which of the following is an example of homeostasis found in your body? a. you eat food because it tastes good b. you shiver because you are cold c. you stay well because you take antibiotics when you’re sick d. you get sick when invaded by a pathogen e. you eat more and gain weight
Sample Question 2 What is the major difference between prokaryotes and eukaryotes? a. Prokaryotes used photosynthesis and eukaryotes don’t use photosynthesis b. Prokaryotes have a nucleus and eukaryotes do not have a nucleus c. Prokaryotes do not have DNA and eukaryotes do have DNA d. Prokaryotes do not have a nucleus and eukaryotes do have a nucleus e. Prokaryotes used photosynthesis while eukaryotes use respiration
Sample Question #3 How is osmosis different from diffusion? a. osmosis refers to the movement of ions across the membrane while diffusion is a special type of osmosis b. osmosis is a special type of diffusion involving only water c. osmosis requires energy and diffusion does not d. osmosis requires proteins and diffusion does not
Have Cells • Unicellular • Multicellular
Metabolism Autotrophs Heterotrophs
Growth and development • Growth • Development
Reproduction Sexual Asexual
Thermoregulation Methods of Maintaining Homeostasis • Ectotherms – reptiles, fish and amphibians
Thermoregulation Methods of Maintaining Homeostasis • Endotherms – mammals and birds
Methods of Maintaining Homeostasis • Water regulation (osmoregulation)
Methods of Maintaining Homeostasis • Oxygen regulation
CELLS Prokaryotes Eukaryotes • Unicellular • Lack true nucleus • Lack membrane-bound organelles • Have single loop of DNA • Have ribosomes • Ex: bacteria • Uni or multicellular • Have a true nucleus • Have a wide variety of membrane-bound organelles • Have DNA in chromosomes • Ex: fungi, protists, plants, animals
Cell Organelles – tiny structures that carry out functions necessary for the cell to stay alive
Passive transport - NO energy • Diffusion
Passive transport - NO energy • Osmosis
Passive transport - NO energy • Osmosis
Passive transport - NO energy • Facilitated Diffusion
Active Transport – requires energy • Cell Membrane Pumps
Active Transport – requires energy • Endocytosis
Active Transport – requires energy • Exocytosis
Transport in Cells • Uses vesicles • Involves the endoplasmic reticulum and golgi apparatus