Сборник задач по подготовке учащихся к международным исследованиям timss и pisa
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ПИЗА ДАЙЫНДЫ0 ТАПСЫРМАЛАРЫ қазақша
| 2.2 Scientific literacy
Task 1. Microorganisms Cyanobacteria are most similar to the most ancient microorganisms, the remains of which (over the age of 3.5 billion years) are found on Earth. Also referred to as blue-green algae. The only non-nuclear cage these organisms is divided in half, or just a few pieces. Each piece is a holistic functional organism. Fig. 1 Question 1. What is a blue green algae after 15 - breeding, if they reproduce by dividing in half (Figure 1).? A. 32768 B. 16587 C. 12.554 D. 14548 Answer: ______________. Question 2. What is the multiplication is performed parental individual on their own, without the exchange of genetic information with other individuals? A. In asexual form B. Vegetative reproduction C. Fragmentation (body division) Answer: ______________. Question 3. A person is constantly updated skin. In simpler organisms possible recovery of entire organs. The ability of living organisms to restore damaged tissues and organs is called regeneration. Which of the following methods of asexual reproduction are not based on regeneration? A. Spore formation B. Budding C. Fragmentation D. Vegetative reproduction Answer: ______________. Question 4. Once in the favorable conditions of blue green algae at the end of 20-minute bacteria are divided into two, each of them by the end of the next 20 149 minutes is divided again into two and so on. Find the number of bacteria by the end of the day. A. 4722366482869645213695 B. 4722366482869645213696 C. 3722366482869645213695 D. 5722366482869645213695 Answer: ______________. Task 2. Snail Snail - one of the largest land snails in our country, and its shape is familiar to each of us: an asymmetrical body, wide flat "foot", two pairs of tentacles and a pair of eyes. Shell color varies from yellow-brown to brownish-white. Fig. 2 Question 1. What determines the color of the shell? A. from food intake The age B. C. the shape of the shell D. shell on the number of revolutions Answer: ______________. Question 2. How to distinguish the age of snails? A) over the thickness of the shell edge otverstvija B) by muscular contractions C) on the shell color D) for the shell-shaped Answer: ______________. жүктеу/скачать Достарыңызбен бөлісу:
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