Presentation is loading. Please wait.

Presentation is loading. Please wait.

SBI4U – Grade 12 Biology. Outline  Animal of the Day!  Enzyme basics  DNA Forensics  Digestive Disorders.

Similar presentations


Presentation on theme: "SBI4U – Grade 12 Biology. Outline  Animal of the Day!  Enzyme basics  DNA Forensics  Digestive Disorders."— Presentation transcript:

1 SBI4U – Grade 12 Biology

2 Outline  Animal of the Day!  Enzyme basics  DNA Forensics  Digestive Disorders

3 Mr. Wang  Background in marine biology and biological invasion  Science rules  Loves playing tennis and video games  Has one super power!

4 Animal of the day!  The Texas horned lizard  Defense mechanism: shoot blood at predators ◦ Out of its eyes!  The blood is mixed with foul-smelling chemicals

5

6

7 Enzymes  Breakdown substances  Protein catalyst  Specific to substrate  Present in every cell Pharmaceutical Industry  Develops, produces, and markets medical drugs

8  Doctors measure the amount and type of an enzyme to determine any diseases Ex. Damaged liver

9  2 practises (Enzyme Therapy and Enzyme Replacement Therapy)  Suggested for people over 35 years of age  Plant-based enzymes are preferred over animal derived enzymes  Many different kinds of capsules  Take once with every meal

10  Provides therapeutic benefits ◦ Enhance circulatory and immune systems ◦ Quicker healing ◦ Better stamina  Consume between meals  The practise is increasing in popularity

11  There are supplements for this disorder  Lactase is the enzyme  Acidic environment  Better alternative for some people

12  There are enzymes in skin care products ◦ Rosecea ◦ Face Wash

13 Forensics and Fluorescence in the Study of DNA

14 Forensics  Application of multiple areas of sciences to answer questions pertaining to a legal system  Criminalistics, Pathology, Botany, Archaeology are a few examples of forensic fields

15 DNA Profiling  A sample of a persons DNA is taken from a buccal swab  Cross referenced or compared against another sample to check for similarities and differences  13 unique DNA regions, or loci, are scanned  These regions or loci vary from person to person and create the persons profile

16 Forensic Serology  Finding and classifying body fluids such as perspiration, fecal matter saliva, and blood  In charge of the most important evidence in forensics  Used in DNA analysis and DNA profiling

17 Restriction Enzymes  Used to manipulate DNA  Assist the insertion of genes during gene cloning because it allows flexibility when testing gene fragments  Used to distinguish gene alleles by recognizing single based changes in DNA  Cut the DNA like scissors at specific points in the sequence

18 RFLP  Restriction Fragment Length Polymorphism  Analyzing variable lengths of DNA using a restriction endonuclease  Technique doesn’t work if sample has been degraded by environmental factors like dirt

19 Fluorescence Fluorescence: light exuded by the absorption of a source of light or radiation  Used to detect various segments of DNA strands  Crucial to DNA sequencing, DNA chip technology, and structure of proteins

20 Enzymes in DNA  Enzymes along with proteins are needed and mainly used to synthesize new DNA  Synthesis: Artificial union of chemicals/elements to form chemical compounds

21 Enzyme: Helicase  Enzyme used to unwind double helix of DNA  Aids in repair and preservation of damaged DNA (shown by fluorescence)  Inhibits unwanted recombination

22 Digestive Disorders

23 What are Digestive Enzymes?

24 Indigestion

25 Obesity

26 Celiac and Gluten Intolerance

27 Lactose Intolerance

28 Pancreatitis

29 Any Questions?

30 1. Name 2 things you learned today 2. What did you find interesting? 3. What do you want to see more or less of?


Download ppt "SBI4U – Grade 12 Biology. Outline  Animal of the Day!  Enzyme basics  DNA Forensics  Digestive Disorders."

Similar presentations


Ads by Google