What is the definition of a hydrocarbon?(1 point)
a single line bonding carbon and hydrogen
large molecules that are produced by living things
electrons shared between two different atoms
a large chain of carbons and hydrogens bonded together
a large chain of carbons and hydrogens bonded together
What do amino acids, fatty acids, and sugars (monosaccharides) have in common?(1 point)
They are made of carbon, oxygen, and hydrogen.
They are made of carbon, oxygen, and nitrogen.
They are used to make proteins.
They are used to make lipids.
They are made of carbon, oxygen, and hydrogen.
What makes amino acids unique from one another?(1 point)
the R group
the long strands of glucose molecules
the amino group
the carboxyl group
the R group
Which compound is a carbohydrate?(1 point)
nucleotide
starch
amino acid
protein
starch
Which compound contains nitrogen?(1 point)
starch
glucose
amino acid
water
amino acid
Which equation best represents conservation of matter?(1 point)
6H 2 O + 6CO 2 → C 3 H 6 O 3 + 3O 2
3H2O + 3CO2 → C6H12O6 + 6O2
6H 2 O + 10CO 2 → C 6 H 12 O 6 + 4O 2
6H2O + 6CO2 → C6H12O6 + 6O2
6H2O + 6CO2 → C6H12O6 + 6O2
What are reactants in a chemical reaction?(1 point)
outputs
inputs
substances that are formed by reactions
substances that speed up reactions
inputs
During a chemical reaction, the number of atoms(1 point)
decreases.
stays the same.
fluctuates.
increases.
stays the same.
A large portion of cellular respiration happens in the mitochondria. For this reason, the mitochondria are known colloquially as the “powerhouses of the cell.” Which body organ could best be compared to the mitochondria?(1 point)
the stomach because it breaks down nutrients and releases energy for the body
the brain because it controls the body
the heart because it pumps nutrients around the body
the lungs because they add oxygen to the body
the lungs because they add oxygen to the body
Reliability refers to(1 point)
professionalism
elegance
relevancy
consistency
consistency
In 3-5 sentences, explain how the rate of photosynthesis or cellular respiration can be measured using products or reactants
The rate of photosynthesis can be measured by examining the production of oxygen or the consumption of carbon dioxide. By measuring the amount of oxygen released or the amount of carbon dioxide consumed over a specific period of time, we can determine the rate at which photosynthesis is occurring. Similarly, the rate of cellular respiration can be measured by monitoring the consumption of oxygen or the production of carbon dioxide. By measuring the decrease in oxygen or the increase in carbon dioxide concentration, we can determine the rate at which cellular respiration is taking place.
A substance is dissolved in water, and the temperature of the surroundings decreases. Is this process exothermic or endothermic? Explain your reasoning in 3-5 sentences.
The process of a substance dissolving in water and the temperature of the surroundings decreasing is indicative of an endothermic reaction. In an endothermic process, energy is absorbed from the surroundings, resulting in a decrease in temperature. When a substance dissolves in water, it requires energy to break the intermolecular forces holding the particles together. This energy is taken from the surroundings, causing a decrease in the temperature. Therefore, the decrease in temperature indicates that the dissolving process is absorbing heat, making it an endothermic reaction.
In 3-5 sentences, explain how the nutrients in what you eat contribute to your body's biochemistry.
The nutrients in our diet play a crucial role in our body's biochemistry. Proteins, for example, are broken down into amino acids, which are used to build and repair tissues and serve as enzymes and hormones. Carbohydrates are converted into glucose, providing energy for cellular processes. Fats are broken down into fatty acids, which are utilized as a source of energy and for building cell membranes. Additionally, vitamins and minerals act as coenzymes and cofactors in various biochemical reactions. Overall, the nutrients we consume provide the essential building blocks and energy required for our body's biochemical processes to occur efficiently.
Your friend asks for your help checking their essay about sugar production and use in plants. They have found an online encyclopedia that says the following. "Plants produce glucose via photosynthesis. Glucose is linked together to form the carbohydrate starch." Your friend is confused, though, because a university website states that "glucose is linked together to form cellulose, the main part of plant cell walls."
Help your friend fact check their information. In 3-5 sentences, describe how they can determine which website(s) to believe.