7th Grade Science Student ebook

7.3 VIRUSES CHAPTER 7: THE MICROSCOPIC WORLD How viruses infect cells Host cells become factories for the virus When some viruse ...

UNIT 2 CELL BIOLOGY Figure 7.13: Antibodies prevent viruses from entering cells. immune system - a system that protects an organ ...

7.3 Viruses. CHAPTER 7: THE MICROSCOPIC WORLD Vaccines A vaccine causes your immune system to produce antibodies to a particular ...

The Good, The Bad, The Microbe What are our bodies made of? Water, oxygen, tissue, yes - but you might be surprised to learn tha ...

UNIT 2 CELL BIOLOGY Microbes can live in all kinds of environments. Some require oxygen, others thrive without it. Also, microbe ...

Outbreak! Patient Zero An epidemic spreads rapidly by infection and affects many individuals in a population at the same time. E ...

CHAPTER 7 THE MICROSCOPIC WORLD Chapter 7 Assessment Vocabulary Select the correct term to complete the sentences. Section 7.1 ...

CHAPTER 7 THE MICROSCOPIC WORLD What can some Protozoans do to survive through dry conditions? How are protozoans divided into ...

UNIT 2 CELL BIOLOGY Chapter 7 Assessment.. Section 7.3 If a virus was enlarged 10,000 times, it would be the size of a grain of ...

THIS AT HOME Genetics Chapter 8 Reproduction Chapter 9 Heredity Chapter 10 The Code of Life What are some human traits? Some obv ...

Chapter 8 Reproduction Your school probably has at least one copy machine. When a teacher has a quiz or a letter that she wants ...

UNIT 3 GENETICS Figure 8.1: Most of the cells in your body reproduce by dividing into two daughter cells. cell division - the pr ...

8.1 GROWTH AND CELL REPRODUCTION Chapter 8: Reproduction Chromosomes What are chromosomes? Eukaryotic cells are usually larger a ...

UNIT 3 GENETICS Figure 8.3: The cell cycle consists of three phases. cell cycle - the period of time from the beginning of one c ...

8.1 Growth and Cell Reproduction. CHAPTER 8: REPRODUCTION You have 46 chromosomes in your body cells. The diagram below shows th ...

UNIT 3 GENETICS Figure 8.4: Photographs of plant cells in different stages of the cell cycle. Interphase (A) and prophase (B) B ...

8.1 GROWTH AND CELL REPRODUCTION CHAPTER 8: REPRODUCTION 8.1 Section Review What is a daughter cell? Why is cell division simpl ...

UNIT 3 GENETICS Figure 8.6: A complete set of human chromosomes found in a body cell. reproduction - the formation of new organi ...

8.2 SEXUAL REPRODUCTION AND MEIOSIS CHAPTER 8: REPRODUCTION Meiosis What is meiosis? A body cell has the same number of chromoso ...

UNIT 3 GENETICS What happens during meiosis? ...