Ch 28: Praxis Middle School Science: Biochemistry

About This Chapter

Whether biochemistry is a strength or you're a little rusty on the subject, our video lessons and self-assessment quizzes can help you confirm what you know and clarify any weak spots as you prepare for the Praxis Middle School Science test.

Praxis Middle School Science: Biochemistry - Chapter Summary

Do you need to take the Praxis Middle School Science test? Use the video lessons in this chapter to ensure you're ready for biochemistry questions you may encounter on test day. Our expert instructors have created these video lessons specifically with you in mind. They have made these lessons brief and engaging for quick and effective review. You can watch the videos anytime, anywhere, as often as you need. The lessons cover biochemistry topics such as:

  • The process and steps of cellular respiration
  • Steps and products of the electron transport chain
  • Fermentation of lactic acid versus alcohol
  • Chemical structure, bonds and bases of DNA
  • RNA verses DNA
  • mRNA vs tRNA vs rRNA
  • Structure and function of carbohydrates, lipids and proteins
  • Function and regulation of enzymes, coenzymes and cofactors

Completing the short quizzes after each chapter will boost your confidence in your comprehension and retention of the material so you can be sure you're ready on test day.

Praxis Middle School Science: Biochemistry Chapter Objectives

Most states utilize the Praxis Middle School Science test to assess your readiness to teach science to middle schoolers. The topics covered in this test prep guide about biochemistry have been chosen specifically to correspond to and expound on what you're likely to encounter on the actual test.

Biochemistry is included in the life sciences section of the test, which constitutes 24% of the total 125 questions (and includes other topics in addition to biochemistry). According to the creators of the test, they want to be sure you understand the basic biochemistry of living organisms with regards to cellular respiration, photosynthesis and the structure and function of biological molecules (like nucleic acids, carbohydrates, proteins, lipids and enzymes).

13 Lessons in Chapter 28: Praxis Middle School Science: Biochemistry
Test your knowledge with a 30-question chapter practice test
Overview of Cellular Respiration & Its Steps

1. Overview of Cellular Respiration & Its Steps

Ever wonder how your body turns nutrients and oxygen into energy? Or maybe how beer or champagne get both bubbles and alcohol? It turns out that both processes are a direct result of cellular respiration.

The Electron Transport Chain: Products and Steps

2. The Electron Transport Chain: Products and Steps

In this lesson, we'll learn about the finale of cellular respiration. The electron transport chain uses products from the first two acts of glycolysis and the citric acid cycle to complete the chemical reaction that turns our food into usable cellular energy.

Lactic Acid & Alcoholic Fermentation: Comparison, Contrast & Examples

3. Lactic Acid & Alcoholic Fermentation: Comparison, Contrast & Examples

When in an anaerobic environment, some cells can use glycolysis and fermentation to keep producing ATP. Lactic acid fermentation happens in our muscle cells when we are exercising feverishly, while alcoholic fermentation is used in yeast cells and is what leads to beer, bread, and wine.

DNA: Chemical Structure of Nucleic Acids & Phosphodiester Bonds

4. DNA: Chemical Structure of Nucleic Acids & Phosphodiester Bonds

In this lesson, you'll discover what nucleotides look like and how they come together to form polynucleotides. We'll also explore nucleic acids and focus on DNA in particular.

DNA: Adenine, Guanine, Cytosine, Thymine & Complementary Base Pairing

5. DNA: Adenine, Guanine, Cytosine, Thymine & Complementary Base Pairing

Learn the language of nucleotides as we look at the nitrogenous bases adenine, guanine, cytosine and thymine. Armed with this knowledge, you'll also see why DNA strands must run in opposite directions.

DNA: Discovery, Facts, Structure & Function in Heredity

6. DNA: Discovery, Facts, Structure & Function in Heredity

This lesson will help you to navigate the twists and turns of DNA's structure. We'll also clue you in on the amazing discoveries that put this nucleic acid in the limelight as the molecule of heredity.

Differences Between RNA and DNA & Types of RNA (mRNA, tRNA & rRNA)

7. Differences Between RNA and DNA & Types of RNA (mRNA, tRNA & rRNA)

In this lesson, you'll explore RNA structure and learn the central dogma of molecular biology. Along the way, you'll meet the three types of RNA and see how the cell uses them most effectively.

Structure and Function of Carbohydrates

8. Structure and Function of Carbohydrates

Carbohydrates are found in many foods that we eat and may be found as sugars, starches, or fiber. Learn more about these three distinct types of carbohydrates, and how they are distinguished through their chemical structures in this lesson.

Structure and Function of Lipids

9. Structure and Function of Lipids

Molecules called lipids have long hydrocarbon chains that determine the way they act. They can be fats, oils, or hormones, and even exist in our cell membranes. Learn more about the chemical structure and biological function of various lipids in this lesson.

Proteins: Structure, Function & Types

10. Proteins: Structure, Function & Types

Without proteins you couldn't survive. But how much do you know about them? This lesson will explore the structure and function of proteins, and list some types of proteins you might encounter.

The Function of Enzymes

11. The Function of Enzymes

Have you ever used a drill to accelerate building something that only requires a screwdriver? It went a lot faster, didn't it? In this lesson, you'll learn how that drill is a lot like an enzyme.

Coenzymes, Cofactors & Prosthetic Groups: Function and Interactions

12. Coenzymes, Cofactors & Prosthetic Groups: Function and Interactions

Some enzymes require helpers to recognize a substrate or complete a reaction. These helpers include cofactors, coenzymes, and prosthetic groups, which are required for some enzymes' functions.

Enzymatic Reactions: Inhibition and Regulation

13. Enzymatic Reactions: Inhibition and Regulation

Enzymes are generally not allowed to run uncontrolled in a cell. While they are useful in catalyzing reactions, there is a time and place for everything. In this lesson, we'll discuss enzyme activators and inhibitors that regulate these reactions positively and negatively, respectively.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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