Scientists can determine if photosynthesis or cellular respiration is occurring in the sealed chamber by measuring the volumes of carbon dioxide (CO2) and oxygen (O2) over time. During photosynthesis, the organism consumes CO2 and produces O2, leading to a decrease in CO2 levels and an increase in O2 levels. Conversely, during cellular respiration, the organism consumes O2 and produces CO2, resulting in an increase in CO2 levels and a decrease in O2 levels. By analyzing the changes in the concentrations of these gases, scientists can infer the dominant metabolic process occurring within the chamber.
an organism is sealed in a chamber, scientists measure the amount of carbon dioxide and oxygen in the chamber, in 3-5 sentences, explain how they can use the volumes of these gases to determine if photosynthesis or cellular respiration is occuring in the chamber.
9 answers
Identify which building blocs sugars, amino acids, and faty acids are broken into, then explain how the nutrients contribute to your bodys biochemistry
Sugars, amino acids, and fatty acids are the building blocks of carbohydrates, proteins, and lipids, respectively.
-
Sugars: These carbohydrates are primarily broken down into glucose, which serves as a primary energy source for cells. Glucose participates in cellular respiration, producing ATP (adenosine triphosphate), the energy currency of the cell, and it can also be converted into glycogen for energy storage.
-
Amino acids: These are the building blocks of proteins. Once broken down, they are used in various ways, including the synthesis of new proteins that are essential for cell structure and function, enzymes that catalyze biochemical reactions, and hormones that regulate physiological processes. Amino acids can also serve as precursors for neurotransmitters and are involved in metabolic pathways.
-
Fatty acids: The breakdown of fats results in fatty acids and glycerol. Fatty acids can be oxidized through beta-oxidation for energy production in the form of ATP. They also play critical roles in building cell membranes (through phospholipids), synthesizing hormones, and serving as signaling molecules in various biological processes.
Overall, these nutrients contribute significantly to the body's biochemistry by providing energy, building cellular structures, and participating in metabolic pathways that are essential for growth, repair, and homeostasis.
Scientists are working on a new medicine for people with gluten intolerance. it contains the enzyme "dipeptidyl peptidase IV" which helps break down wheat proteins, in 1-2 sentences, in terms of building biomolecules, explain why this would be beneficial for people with a gluten intolerance
Dipeptidyl peptidase IV (DPP-IV) helps break down gluten proteins into smaller, less harmful peptides, reducing the immune response and digestive issues associated with gluten intolerance. By facilitating the breakdown of these complex proteins into simpler amino acids, the enzyme aids in their more efficient digestion and absorption, minimizing symptoms related to gluten consumption.
An ice pack is cracked, starting a reaction. the ice pack decreases in temperature as the reaction absorbs heat energy from the environment. the temperature of the surroundings decreases as heat is absorbed by the ice pack. is this process exothermic or endothermic? explain your reasoning in 3-5 sentences
The process described is endothermic because the reaction occurring in the ice pack absorbs heat energy from the surroundings, leading to a decrease in temperature of both the ice pack and the environment. In an endothermic reaction, energy is absorbed rather than released, which is evident as the ice pack cools down and draws heat away from the surrounding area. As a result, the surroundings lose thermal energy, resulting in a noticeable drop in temperature. This contrasts with an exothermic reaction, where energy is released, causing an increase in temperature in the surrounding environment.
A 50 gram glass holds 400 of liquid water and 75 grams of ice. after 20 minutes the mass of ice is 50 grams. 1-2 sentences, assuming no evaporation or sublimation has occured, calculate the mass of the liquid water at this time and explain how this is found
To calculate the mass of the liquid water after 20 minutes, we start with the initial amount of water, which is 400 grams. Since 75 grams of ice initially were present, and after 20 minutes only 50 grams remain, this means 25 grams of ice have melted into liquid water. Therefore, the mass of the liquid water at this time is 400 grams (original) + 25 grams (melted ice) = 425 grams.
1 answer