Spishi.ru - 8 Klass Biologija Dragomilov Laboratornaja Rabota 6

In the 8th-grade biology textbook by Dragomilov and Mash, Laboratory Work №6 is typically titled (or focuses on cardiovascular/respiratory responses like heart rate).

Based on common curriculum standards found on educational platforms like Infourok , here is the standard structure and answers you would find for this lab.

Depending on your specific edition of the textbook, Laboratory Work №6 might alternatively be "The Composition of Inhaled and Exhaled Air." If your lab involves limewater and blowing through a straw, the answer is that exhaled air turns limewater cloudy because it contains more carbon dioxide than atmospheric air. In the 8th-grade biology textbook by Dragomilov and

Sit down and measure your pulse again after 3 minutes of rest. Example: 75 bpm . Conclusion/Answers:

To observe how physical stress affects the circulatory system and determine the rate of recovery. Equipment: A stopwatch (or a watch with a second hand). Procedure and Typical Results: Sit down and measure your pulse again after

Sit quietly for 2–3 minutes. Measure your pulse for 15 seconds and multiply by 4. Example: 18 beats in 15 sec × 4 = 72 bpm . Activity: Perform 20 deep squats in 30–40 seconds.

During physical activity, muscles require more oxygen and nutrients. The heart beats faster to pump blood more quickly to meet this demand and to remove carbon dioxide ( CO2cap C cap O sub 2 Equipment: A stopwatch (or a watch with a second hand)

Immediately measure your pulse for 15 seconds and multiply by 4. Example: 30 beats in 15 sec × 4 = 120 bpm .