Contents
How do you measure respiration in plants?
One commonly used method of measuring respiration involves a flow-through system where a gas stream is passed through a container of respiring fruit or vegetables at a known rate.
How do you calculate the rate of respiration?
The respiration rate is the number of breaths a person takes per minute. The rate is usually measured when a person is at rest and simply involves counting the number of breaths for one minute by counting how many times the chest rises.
What is plant respiration?
The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. In many ways, respiration is the opposite of photosynthesis. As with photosynthesis, plants get oxygen from the air through the stomata.
What are the units of respiration rate?
The Respiration rate is the number of breaths a person takes per minute (more formally, the number of movements indicative of inspiration and expiration per unit time). The unit of measure is expressed in breaths per minute (BPM).
What happens in plant respiration?
Respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy. This energy is used to fuel growth and all of the normal cellular functions. Carbon dioxide and water are formed as by-products of respiration (Figure 4).
How can the rate of respiration be calculated?
For example, yeast can use glucose directly in respiration, or it may first have to break down other carbohydrate substances such as starch or sucrose to release the glucose that can be used in respiration. The rate of a reaction can be calculated by measuring how much product is made in a specific amount of time.
How is the chemical equation of cellular respiration expressed?
Yes, plants breathe throughout its life span both during the day and night. The chemical equation of cellular respiration is expressed as — oxygen + glucose -> carbon dioxide + water + heat energy.
How does respiration take place in different parts of plant?
During respiration, in different plant parts, significantly less exchange of gas takes place. Hence, each part nourishes and fulfils its own energy requirements. Consequently, leaves, stems and roots of plants separately exchange gases. Leaves possess stomata – tiny pores, for gaseous exchange.
How to calculate the rate of respiration in yeast?
In an experiment, Sarah found that 1 g of yeast produced 20 cm3 of carbon dioxide in three minutes when using glucose as a substrate. What was the rate of respiration in cm3 of CO2 per minute when using glucose? The rate needs to be calculated in cm 3 of CO 2 per minute. We know that 20 cm 3 of CO 2 was produced in three minutes.