All of the following describes enzymes, except
enzymes are made of protein
enzymes can be denatured
enzymes can only work one time
enzymes can be found in biological organisms
The Correct Answer is C
A. Enzymes are made of protein: Enzymes are primarily composed of protein molecules that fold into specific three-dimensional shapes, enabling them to catalyze biochemical reactions efficiently.
B. Enzymes can be denatured: Enzymes can lose their functional shape, or become denatured, when exposed to extreme temperatures, pH levels, or chemical agents, which impairs their catalytic activity.
C. Enzymes can only work one time: Enzymes are not used up in reactions; they can catalyze the same type of reaction repeatedly without being consumed.
D. Enzymes can be found in biological organisms: Enzymes are naturally present in all living organisms, where they facilitate essential metabolic and physiological processes.
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Related Questions
Correct Answer is A
Explanation
A. a process we use to better understand how the world works: Science is a systematic process that involves observation, experimentation, and analysis to explain natural phenomena. It provides a structured way of building knowledge, testing ideas, and refining our understanding of the world.
B. running experiments: Experiments are an important part of science, but they represent only one tool within the broader scientific method. Science also involves forming hypotheses, making observations, analyzing data, and drawing conclusions beyond just running experiments.
C. studying chemical reactions: Studying chemical reactions is part of chemistry, which is a branch of science. However, science as a whole encompasses many fields, such as biology, physics, astronomy, and earth science, making it far broader than only chemical processes.
D. learning about life: Learning about life is the focus of biology, which is one area within science. While biology is a major scientific discipline, science overall includes both living and non-living systems.
Correct Answer is B
Explanation
A. cell culture: Viruses can be grown in cell cultures, where living host cells provide the machinery necessary for viral replication. This is a common laboratory method.
B. nutrient media: Viruses cannot grow on nutrient media alone because they require living host cells for replication. Nutrient media supports bacterial and fungal growth, not viruses.
C. lab animals: Some viruses require whole organisms for propagation, so laboratory animals can be used as hosts to study pathogenesis and replication.
D. embryonated eggs: Embryonated chicken eggs provide a supportive environment for viral growth and are widely used for vaccine production, such as influenza vaccines.
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