Asked by Connexuskid34

In the Krebs cycle, how is citric acid formed? (1 point)
Pyruvic acid molecules
• are broken down by an acetyl group.
Enzymes combine
• hydrogen ions, oxygen, and electrons.
Acetyl-CoA joins with
• a large molecule called oxaloacetic acid.
Carbon dioxide bonds
• with a chain of coenzyme A.
Answered by Connexuskid34
The following are steps of cellular respiration except (1 point)
O glycolysis
• the Krebs cycle
• electrolysis
electron transport chain
Answered by Connexuskid34
Which molecule provides the activation energy that starts glycolysis? (Not which molecule is broken down during glycolysis)
(1 point)
• АТР
• sugar
• carbon dioxide
• water
Answered by Connexuskid34
?
Answered by Connexuskid34
During which phase of cellular respiration is carbon dioxide released? (1 point)
electron transport chain
• glycolysis
• digestion
• Krebs cycle
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Which statement is true? (1 point)
Endotherms cannot insulate (stop heat loss from) their bodies and can only control their body temperature involuntarily.
Ectotherms cannot insulate (stop heat
• loss from) their bodies and can only control their body temperature by choice.Ectotherms can insulate (stop heat loss from) their bodies and can control their body temperature by choice.
Endotherms can insulate (stop heat
• loss from) their bodies but can only control their body temperature by choice.
Answered by Connexuskid34
Which activity uses ATP to raise body temperature? (1 point)
• shivering
• hibernating
• panting
• storing fats
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In the Northern Hemisphere, climate scientists observe seasonal changes in carbon dioxide concentration with the highest levels measured in May and the lowest levels measured in October. Hypothesize how photosynthesis can affect these changes. Explain your answer in three to five sentences. (Remember:
1. Leaves, in the Northern Hemisphere, appear on trees in the Spring and fall from trees in the Autumn. 2. Leaves are where photosynthesis occurs. 3. How does photosynthesis effect carbon dioxide?) (4 points)
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Plants in different environments have challenges that only they have.
For example, the growth of a plant in a rainforest (e.g., an orchid) might be more affected by different things than a plant in a desert (e.g., a succulent). In three to five
sentences, compare environmental challenges that could affect the photosynthetic process of a rainforest plant versus a desert plant. (4 points)
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In 3 to 5 sentences, describe the relationship between a glucose molecule and the products it makes during cellular respiration. (4 points)
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Remember the law of conservation of mass. The human body uses cellular respiration to make energy.
Using the chemical equation for cellular respiration, explain how the amounts of oxygen and carbon dioxide inhaled by the lungs is different from the amounts exhaled.
Explain your answer in 1-2 sentences. (2 points)
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Dragonflies are flying insects. In the summer, dragonflies can be seen perched on tree branches in an obelisk pose (i.e., a handstand position with the tip of their abdomen pointing upward). In 3-5 sentences, describe how dragonflies might control their body temperature and give reasons for why they might perch in this pose. (4 points)
Answered by GPT 3.5
The correct answer is:

Acetyl-CoA joins with a large molecule called oxaloacetic acid.
Answered by GPT 3.5
The correct answer is:

Electrolysis
Answered by GPT 3.5
The molecule that provides the activation energy that starts glycolysis is ATP (adenosine triphosphate).
Answered by GPT 3.5
The correct statement is:

Endotherms can insulate (stop heat loss from) their bodies but can only control their body temperature by choice.
Answered by GPT 3.5
The correct answer is:

Shivering
Answered by GPT 3.5
In the Northern Hemisphere, during the spring and summer months, the leafy trees and plants go through a process called photosynthesis. Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce glucose and release oxygen. As more leaves appear on trees during this time, there is an increase in the overall photosynthetic activity occurring. This leads to a higher rate of carbon dioxide absorption from the atmosphere by the leaves. Therefore, the concentration of carbon dioxide in the atmosphere decreases during this period as it is being utilized by plants for photosynthesis. In contrast, during the autumn months, leaves start to fall from trees, reducing the overall photosynthetic activity. This leads to a decrease in carbon dioxide absorption by plants, causing the concentration of carbon dioxide in the atmosphere to rise. This seasonal fluctuation in carbon dioxide levels is primarily influenced by the cycle of leaf growth and shedding, which directly affects the rate of photosynthesis occurring in the Northern Hemisphere.
Answered by GPT 3.5
Rainforest plants face challenges such as competition for sunlight due to dense vegetation, high humidity leading to increased risk of fungal and bacterial infections, and reduced availability of nutrients due to rapid decomposition. In contrast, desert plants have to adapt to extreme heat and limited water availability, leading to adaptations like succulence, reduced leaf surface area to minimize water loss, and specialized water storage structures. These challenges affect the photosynthetic process differently - rainforest plants must compete for light and nutrients, while desert plants need to cope with limited water resources and high temperatures that can affect their photosynthetic efficiency.
Answered by GPT 3.5
During cellular respiration, a glucose molecule is broken down to produce energy in the form of ATP. In the first step of cellular respiration, glycolysis, glucose is converted into two molecules of pyruvate. These pyruvate molecules then enter the mitochondria for further processing. In the Krebs cycle, the pyruvate molecules are fully broken down to release carbon dioxide and generate energy-rich molecules like NADH and FADH2. Finally, during the electron transport chain, the NADH and FADH2 molecules donate their electrons to the chain, leading to the production of ATP and water as byproducts. Overall, the glucose molecule is gradually oxidized to release energy and forms carbon dioxide and water as waste products during cellular respiration.
Answered by GPT 3.5
The amounts of oxygen inhaled by the lungs and carbon dioxide exhaled by the lungs are different because during cellular respiration, oxygen is consumed as it reacts with glucose to produce carbon dioxide. Therefore, the oxygen concentration decreases during respiration, while the carbon dioxide concentration increases as it is produced as a waste product of the metabolic process.
Answered by GPT 3.5
Dragonflies control their body temperature through behavioral adaptations such as perching in an obelisk pose. By pointing their abdomen upward, they can minimize exposure to direct sunlight and reduce heat absorption. This pose helps regulate their body temperature by reducing the surface area exposed to the sun, preventing overheating. Additionally, the increased elevation of the abdomen allows for better air circulation and heat dissipation. By perching in this pose, dragonflies can strategically manage their body temperature and maintain optimal metabolic activity for flight and other essential functions.