Food ingestion Nutrition in Paramecium 11 Food ingestion

Food ingestion. Nutrition in sponges. 12

Micronutrients. They are the substances an organism must have in its diet in small

Micronutrients. Various diseases result from shortage of certain vitamins and minerals in the diet.

Respiration. Living things continually exchange gases with the environment. Why is this necessary? Living

Respiration. Molecular oxygen is dangerous to living tissues because it oxydizes organic molecules. This

Exercise Match the animals with their breathing diagrams, and put the following labels: Tracheae

Exchange 1: Air to lung. Exchange 2: Lung to blood. Transport system. Exchange 3:

Growth and reproduction. Living things have the ability of giving life to offspring. This

There are two kinds of reproduction. Which are they? 23

SEXUAL REPRODUCTION ADVANTAGES - High genetic diversity - Fast evolution - Energy costly DISADVANTAGES

Video: Sexual Vs. non-sexual. How different are offspring from their parents in each kind

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Food ingestion. Nutrition in Paramecium. 11

Food ingestion. Nutrition in sponges. 12

Micronutrients. They are the substances an organism must have in its diet in small quantities because it cannot synthesize them. - vitamins are organic compounds. - minerals are inorganic. 14

Micronutrients. Various diseases result from shortage of certain vitamins and minerals in the diet. Handout: Scurvy 15

Respiration. Living things continually exchange gases with the environment. Why is this necessary? Living cells obtain energy from the oxydation of food in a process called cellular respiration. It requires O 2, and produces CO 2, which the body expels. HW 2: Read about the importance of air and water on p. 169. Do the minilab of p. 171 and plot the graph on your NB. 16

Respiration. Molecular oxygen is dangerous to living tissues because it oxydizes organic molecules. This is why little oxygen can be stored in the body. • • • How long can we survive without food? How long can we survive without water? How long can we survive without oxygen? HW 3: Go to p. 88. What comes out from our bodies as we breathe? 18

Exercise Match the animals with their breathing diagrams, and put the following labels: Tracheae / Lungs / Cell Surface / Gills / Entire outer skin Cut and paste 19

Exchange 1: Air to lung. Exchange 2: Lung to blood. Transport system. Exchange 3: blood to cells. 21

Growth and reproduction. Living things have the ability of giving life to offspring. This way they ensure that their genetic information passes down through generations. 22

There are two kinds of reproduction. Which are they? 23

There are two kinds of reproduction. 24

SEXUAL REPRODUCTION ADVANTAGES - High genetic diversity - Fast evolution - Energy costly DISADVANTAGES - Courship is time consuming ASEXUAL REPRODUCTION - Saves energy - No partner(s) required - No diversity (clones) - Little evolution Some examples… asexual both sexual Handout: Reproduction table, and Venn diagram. HW 4: Read about reproduction on p. 191. Complete the Venn diagram. 25

Video: Sexual Vs. non-sexual. How different are offspring from their parents in each kind of reproduction? 26