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II. Listen to the first part of the text and fill in the table below

pathogen

infection carrier

geographical spread

symptoms

course of infection

III. Listen to the second part of the text dealing with eradication of malaria and complete the sentences below

  1. Peruvians revealed their secret malaria remedy in …

  2. This remedy was …

  3. The person who extracted quinine out of cinchona tree bark …

  4. Eradication campaign against malaria was announced by …

  5. But in 1976 …

  6. One of the reasons for malaria spread through the developing countries …

  7. It is very difficult to fight malaria for two main reasons: …

  8. Mefloquine is a drug that …

  9. Mosquitoes can be kept away …

  10. One can avoid mosquito bites …

WRITING

I. Kingdoms are the largest groups of organization of life. After kingdoms, plants are classified into divisions and other types of organisms are classified into phyla. Then follow classes, orders, families, genera and species. The more closely related two species are the more taxa they share. Some taxonomic groups are further subdivided such as into subclass and superfamily.

Tables 1.1 and 1.2 below list the full taxonomic names of two very different organisms, humans and corn. Study these tables and make similar ones for two other organisms of your own choice

Table 1.1 Human (Homo sapiens). Taxonomy

Category

Name

Description

Kingdom

Animalia

Complex cells; multicellular; nervous tissue

Phylum

Chordata

Body consisting of head, trunk, and tail; highly developed organ systems; three tissue layers in embryo; internal cavity; notochord

Class

Mammalia

Hair; mammary glands; internal fertilization; large skull; homeotherm or endotherm (warm-blooded); extra-embryonic membranes

Order

Primates

Complex brain; flexible toes and fingers; excellent vision

Family

Hominidae

Upright posture; small face; large brain; V-shaped jaw

Genus

Homo

Large brain; relatively short arms; lightweight jaws; small teeth; large thumbs

Species

Homo sapiens

Only living species of genus Homo

]Table 1.2 Corn (Zea mays). Taxonomy

Category

Name

Description

Kingdom

Plantae

Land dwelling; multicellular, eukaryotic organisms with cellulose cell walls; photosynthesize using chlorophyll a and b

Division

Anthophyta

Vascular plants with seeds and flowers; ovules enclosed in an ovary and mature seeds in fruits

Class

Monocotyledoneae

One seed-leaf

Order

Commelinales

Fibrous leaves

Family

Poaceae

Grasses

Genus

Zea

Separate male and female flowers

Species

Zea mays

Corn

Lesson 2

THE BACTERIA

PRE-READING TASKS