Application-Level Multiple-Choice Items

Humans need to eat protein-containing foods regularly because:

Question

Application-Level Multiple-Choice Items​

Humans need to eat protein-containing foods regularly because:​

BlackTom AI · Accepted Answer

Question focus: why do humans need to eat protein-containing foods regularly?
Option 1: "protein is broken down quickly during digestion and lost from the body." This claim misstates protein physiology. While some amino acids are absorbed and used, proteins are not simply 'lost' during digestion; the body recycles amino acids and uses them for protein synthesis and other functions. The idea of rapid, net loss of intact protein from the body is inaccurate and incomplete.
Option 2: "we need essential amino acids that can only be provided by foods." This statement centers on essential amino acids, which cannot be synthesized by the body and must come from the diet. Because foods supply these indispensable building blocks for proteins, regular intake is necessary. This aligns with established nutrition concepts about indispensable amino acids. 
Option 3: "protein is a good source of the essential nutrients iron, zinc, and B12." While protein-containing foods often contain iron and zinc, and some animal-protein sources provide vitamin B12, saying protein is a good source of these nutrients as an intrinsic property is imprecise. The nutrients are not inherent to protein itself; they are micronutrients found in many foods, and B12 is not present in plant proteins. This statement oversimplifies and can mislead about micronutrient sources. 
Option 4: "our bodies cannot make any amino acids needed for proteins." This is incorrect. The body makes many nonessential (non‑essential) amino acids through various metabolic pathways. Only essential amino acids must come from the diet. 
Option 5: "the function of protein is to maintain our muscle strength." While protein supports muscle tissue, its roles are broader (enzymes, hormones, immune function, transport, structural components, etc.). Claiming that maintenance of muscle strength is the sole function ignores these other critical roles. 
Overall, each option contains elements that are either incomplete or inaccurate, except the one emphasizing essential amino acids that must be supplied by foods, which reflects a core nutritional principle about indispensable amino acids and dietary protein needs.

Application-Level Multiple-Choice Items Humans need to eat protein-containing foods regularly because:单项选择题

类似问题

Why is it important for essential amino acids lost from the body to be replaced by the diet?

Which of the following are essential amino acids for infants?

Why is it important for essential amino acids lost from the body to be replaced by the diet?

An incomplete protein is a protein which is missing one or more essential amino acids.

Proteins are classified as ‘complete’ and ‘incomplete’ based on:

Which amino acid is considered to be essential for animals?

The body can manufacture essential amino acids, so they do not need to be consumed in the diet.

Which of the following is not an essential amino acid?

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Application-Level Multiple-Choice Items​ Humans need to eat protein-containing foods regularly because:​单项选择题

类似问题

Why is it important for essential amino acids lost from the body to be replaced by the diet?

Which of the following are essential amino acids for infants?

Why is it important for essential amino acids lost from the body to be replaced by the diet?

An incomplete protein is a protein which is missing one or more essential amino acids.

Proteins are classified as ‘complete’ and ‘incomplete’ based on:

Which amino acid is considered to be essential for animals?

The body can manufacture essential amino acids, so they do not need to be consumed in the diet.

Which of the following is not an essential amino acid?

更多留学生实用工具

希望你的学习变得更简单

Application-Level Multiple-Choice Items Humans need to eat protein-containing foods regularly because:单项选择题