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 Discuss the nature of science, scientific inquiry and problem solving  Analyze cellular design and function in plant, animal and bacterial cells  Explore.

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Presentation on theme: " Discuss the nature of science, scientific inquiry and problem solving  Analyze cellular design and function in plant, animal and bacterial cells  Explore."— Presentation transcript:

1  Discuss the nature of science, scientific inquiry and problem solving  Analyze cellular design and function in plant, animal and bacterial cells  Explore the structure of DNA and its relationship to the cell  Evaluate forensic techniques

2 Science is basically predictability  It is using what we know today to give us the ability to predict certain things about the world around us

3 Scientists use Critical Thinking  Be Curious – look around and ask questions about things  Be Skeptical – don’t always believe the first thing you hear  Be Flexible – even after you have found one explanation, keep looking, you may find an even better one later

4 Scientists use the Scientific Method  Observation –carefully watching something around us  Hypothesis – an educated guess explaining what you are observing  Experiment – testing your hypothesis by designing and carrying out an experiment  Conclusion – judging on the basis of your experiment if your hypothesis is right or wrong

5  Experimental – the group in the experiment that is tested  Control – the group in the experiment that stays the same

6  Correlation – two things happen together  Cause Effect - one thing or event actually causes the other to happen

7 All living matter is made up of one or more cells. Also, any cell alive today had its origin in a preexisting cell

8  Plant cells have cell walls  Plant cells have chloroplasts that contain chlorophyll  Plant cells have larger vacuoles than Animal cells  Animal cells contain centrioles  Many animal cells have flagellum to help with movement

9  Bacteria are prokaryotes, they do not have a well-defined nucleus  Bacteria cells contain a single closed DNA circle  Need a microscope to see them  Bacteria come in three shapes ◦ Cocci (round) ◦ Bacilli (rod-shaped) ◦ Spirilla (spiral-shaped)

10  A gene is a unit of information that can be passed on to offspring  They are a powerful influence on physical and mental characteristics  As powerful as genes are, however, it’s important to remember that environment also helps shape organisms

11  Genes are usually either dominant or recessive ◦ A dominant gene is expressed in the offspring no matter what gene the other parent contributes ◦ A recessive gene is expressed in the offspring only if both parents contribute recessive genes

12  A genome is an organism’s complete set of DNA  Except for mature red blood cells, all human cells contain a complete genome

13  DNA contains a phosphate group that attaches to base pairs  The four base pairs of DNA are: ◦ Adenine (A) ◦ Thymine (T) ◦ Guanine (G) ◦ Cytosine (C)  Remember A only attaches to T and G only attaches to C!!!

14  Forensic comes from the Latin word forensis.  Forensic science is science used in public, in court or in the justice system. Any science, used for the purposes of the law, is a forensic science.

15 1. Firearms and tool marks 2. Forensic profiling 3. Document examination 4. Autopsy 5. DNA typing 6. Forensic Anthropology 7. Odontology 8. Blood


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