# What was the volume change for respiration in the dark?

## What was the volume change for respiration in the dark?

Correct answer:Oxygen production increased from 10 to 30 °C but decreased from 30 to 40 °C.

## What was the rate of O2 production for respiration in the dark?

The rate of respiration gradually decreased after the cultures were darkened and at 90 hr the rate of oxygen consumption was unmea- surable in a one-hr period. After 100 hr, both cultures exhibited a significant net production of oxygen in darkness.

## What was the source of CO2 for the plant in your photosynthesis?

During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.

## How do you calculate the rate of photosynthesis changing volume?

To calculate Volume rate of change, one way is to subtract the final volume from the initial/starting volume, then divide this value by the starting volume, and then multiply that value by 100.

## How do you calculate volume from flow rate?

Example 1. Calculating Volume from Flow Rate: The Heart Pumps a Lot of Blood in a Lifetime

1. Strategy. Time and flow rate Q are given, and so the volume V can be calculated from the definition of flow rate.
2. Solution. Solving Q = V/t for volume gives. V = Qt.
3. Discussion. This amount is about 200,000 tons of blood.

## How do you calculate the rate of photosynthesis?

Photosynthesis measured is usually “Net” (i.e., net amount of CO 2 taken up or O 2 released by total plant metabolism) Net Primary Production (NPP) = Gross Primary Production (GPP) – Plant Respiration (R p) GPP does not all go to plant growth, herbivores, litterfall etc.

## What three factors affect the rate of photosynthesis?

The main factors affecting rate of photosynthesis are light intensity, carbon dioxide concentration and temperature.

## What happens in both respiration and photosynthesis?

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

## How do you measure the rate of photosynthesis indirectly?

Finally, photosynthesis can be measured through an increase in biomass. If batches of plants are harvested at a series of times and the biomass of these batches is calculated, the rate increase in biomass gives an indirect measure of the rate of photosynthesis in the plants.

## How can you measure the rate of photosynthesis more accurately?

Using ‘immobilised algae’ – It’s easy and accurate to measure the rate of photosynthesis and respiration using immobilised algae in hydrogen carbonate indicator solution – known as the ‘algal balls’ technique.

## Which set of photosynthesis reactions was being directly measured in this experiment?

co2 +6 H2O + ligjt -> c6H12O6 + 6O2 2. Which set of photosynthesis reactions was being directly measured in this experiment? the Calvin cycle 3.

## How does temperature affect photosynthesis and cellular respiration?

The increase in temperature enhances the rate of cellular respiration. It is due to the heat speeds up the reactions, means the kinetic energy is higher. It means reactions speed up and rate of cellular respiration increases. When temperature decreases, in order to conserve energy, cellular processes slow.

## How does temperature affect oxygen production in photosynthesis?

Higher kinetic energy increases the number of collisions between the enzymes and substrates of the light reactions, ultimately resulting in a higher photosynthetic rate (Lambers et al. 2008). reactions would slow down accordingly. thus decrease the rate of oxygen production.

## What happens if the rate of respiration is more than the rate of photosynthesis?

If the rate of respiration is higher than the rate of photosynthesis then the plant will be starving more because the higher rate of respiration leads to more consumption of the oxygen.

## Which area has the highest amount of primary productivity?

tropical rainforests

## How does salinity affect phytoplankton?

Results confirm salinity as a strong determinant of phytoplankton diversity, while also demonstrating the importance of nutrient supply, where species richness decreased with increasing salinity and increased with nutrient enrichment.

## What do you feed phytoplankton culture?

Phytoplankton are one of the basic building blocks in the food chain on a reef. However, they can be expensive to buy regularly for your reef tank. It can be fed to corals and clams or be used as a nutrition-packed food for other live foods like rotifers, copepods or brine shrimp.

## How does temperature affect phytoplankton?

First, under light-saturated conditions, higher temperature increases specific phytoplankton productivity by acting on photosynthetic carbon assimilation [47,48]. In addition, under non-limiting nutrient conditions, an increase in water temperature increases phytoplankton nutrient uptake [49,50].

## Does salinity change with temperature?

As temperature increases, the space between water molecules increases—also known as density, which therefore decreases. As density increases, the amount of salts in the water—also known as salinity, increases.

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