Nutrients and New Molecule Production

Biology

This content explains how nutrients are used by the body to produce new molecules through assimilation. It details the process of protein synthesis, the role of amino acids, and how these are incorporated into cellular structures and exported products. An experiment with a labeled rat demonstrates the distribution of labeled amino acids into liver proteins over time.

Cell Biology Biochemistry Nutrition

10 Questions Medium Ages 12+ Jan 7, 2026

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About this Study Set

This study set covers Biology through 10 practice questions. This content explains how nutrients are used by the body to produce new molecules through assimilation. It details the process of protein synthesis, the role of amino acids, and how these are incorporated into cellular structures and exported products. An experiment with a labeled rat demonstrates the distribution of labeled amino acids into liver proteins over time. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 10 questions from the Nutrients and New Molecule Production study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the primary role of nutrients for the organism?

A To provide energy and ensure assimilation
B To directly build new molecules
C To export hormones and enzymes
D To store lipids and proteins

2 What is assimilation in the context of cells?

A The construction of their own molecules by cells
B The absorption of nutrients from the intestine
C The production of energy for the organism
D The export of proteins and hormones

3 Where is the synthesis of proteins primarily localized within a cell?

A In the nucleus
B In the cytoplasm
C In the cell membrane
D In the endoplasmic reticulum

4 What are proteins assembled from?

A Amino acids
B Lipids
C Carbohydrates
D Nucleotides

5 In the experiment with the rat, what was used to label the amino acids?

A An atom of radioactive carbon
B A molecule of radioactive nitrogen
C A radioactive isotope of oxygen
D A tracer element

6 After several consecutive days of feeding labeled amino acids to the rat, where were these amino acids found?

A In all cells of the organism
B Only in the liver cells
C In the blood and digestive system
D Exclusively in exported products

7 What does the graph showing the evolution of radioactivity in liver proteins indicate?

A That labeled amino acids are incorporated into liver proteins over time
B That liver proteins are constantly degraded
C That the rat's liver stopped producing proteins
D That radioactivity decreases rapidly in liver cells

8 The diagram on the left illustrates the assembly of proteins from what?

A Amino acids
B Lipids
C Sugars
D Fatty acids

9 What are some of the 'other products exported' mentioned in the text?

A Hormones
B Cellular structures
C Energy
D Nutrients

10 The renewal of cells and tissues requires the production of new what?

A Molecules
B Energy
C Nutrients
D Absorption

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