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Dominik
4 months ago
12

Describe how temperatures above 35 C most likely affect the structure and function of the starch synthase in the particular stra

in. Using the information provided, predict the most likely consequences to starch content in mature rice grains if the rice is grown in an area where the average temperature during the growing season is:

Biology
1 answer:
Rainbow [2.3K]4 months ago
6 0

Answer:

- There is a high likelihood that temperatures exceeding 35°C will alter the enzyme's structural configuration, leading to denaturation and impairing its functional abilities.

- Based on the data provided, the most likely impact on this rice crop is a reduction in its starch content in comparison to crops cultivated under optimal temperature conditions.

Explanation:

The complete question includes the following statement:

A rice grain is a fruit containing a seed. The majority of a rice grain’s dry mass is starch. Starch synthesis in rice plants occurs through the hydrolysis of sucrose followed by the linking of the released glucose molecules to form starch. The ideal temperature range for starch synthase operation in a specific rice strain is between 27°C and 30°C. Similarly, the ideal temperature range for sucrose synthase in this strain is from 30°C to 35°C.

Temperature is a key factor influencing enzyme activity, which can accelerate, decelerate, or inhibit enzymatic functions.

For rice grains to develop their starch content, the action of two enzymes is crucial: sucrose synthase, which disengages glucose from sucrose, and starch synthase, which polymerizes glucose into starch (as seen in the image).

How do temperatures above 35°C likely impact the structure and function of starch synthase in this strain?

A temperature of 35°C significantly surpasses the optimal range required for the enzyme's activity, indicating a potential change in its structure or denaturation that would hinder starch synthase's function. A key consequence of this would be a decreased rate of starch synthesis.

What predictions can be made regarding the starch content in mature rice grains if the average growing season temperature is 33°C?

A temperature of 33°C is beyond the starch synthase activity range—even though it's still favorable for sucrose synthase—which is likely to lead to reduced starch synthesis, resulting in this crop's rice grains containing less starch overall.

More information:

Connection between enzyme reaction velocity and temperature brainly.com/question/14198802

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1. Deciduous trees shed their leaves in seasonal cycles and consist of trees like elm and maple.

2. Conifer leaves are often thin and needle-shaped, while their seeds are found within cones. Conifers incorporate pine and cedar.

3. Evergreens are species that retain their leaves across all seasons and encompass trees such as Pine, Cedar, and Mango.

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1. Deciduous trees shed their leaves in seasonal cycles and consist of trees like elm and maple.

  • Conifers: This refers to the gymnosperm category. They are perennial, vascular, evergreen, woody plants. They are defined by their upright stems with secondary growth and the absence of vessels in their xylem tissue. Typically, their branches spread sideways, featuring needle-like foliage, unisexual flowers, and cone-encased seeds.

 2. Conifer leaves are often thin and needle-shaped, while their seeds are found within cones. Conifers incorporate pine and cedar.

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3. Evergreens are species that retain their leaves across all seasons and encompass trees such as Pine, Cedar, and Mango.

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4. Hardwoods reproduce through flowers and showcase broad leaves; they consist of trees like Elm, Maple, and Mango.    

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