Chapter 1: Learning about Life 1. You are a research scientist for the National

Question

Chapter 1: Learning about Life 1. You are a research scientist for the National Institutes of Health (NIH) interested in perform- ing a controlled experiment to determine the effects of caffeine on human blood pressure. One group of people will get caffeinated coffee and one will get decaffeinated coffee. Briefly explain why you would want that to be the only variable that differs between the two groups. 12. A is a fake treatment given to patients in the control group. A friend tells you her grandfather's pancakes are superior to all other pancakes because he puts only hand-churned butter from llamas into the batter. This is an example of what kind of evidence? 13. Chapter Content: The Properties of Life Complete the following questions as you read the first chapter content The Prtopertis of Lifei 1. A giant sequoia tree is very different from a human. List two properties these two organisms would exhibit despite all of their obvious differences nf life that the phone does not exhibit.

Explanation / Answer

Our hands contain a lot of microbes which are considered as normal microbial flora. Hand churned butter taste good because the microbes present in our hand goes into the milk and helps in the conversion process. This is an example of microbial fermentation. These microbes are considered as the normal microbiota of the human body and they help humans in many way.

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