1. What is the union of a sperm cell and an egg cell called?

a. Fertilization

b. Embryo

c. Implantation

d. Trimester

2. Which of the following nutrients helps form the nervous system of an embryo?

a. Calcium

b. Vitamin A

c. Folic acid

d. Iron

3. Exposure to which of the following may cause birth defects in the second month of pregnancy?

a. Lead

b. Mercury

c. Radiation

d. Smog

4. What is the result when a zygote implants in the fallopian tube or ovary?

a. Preeclampsia

b. Ectopic pregnancy

c. Miscarriage

d. Stillbirth

5. How many chromosomes do most human cells have?

a. 12

b. 23

c. 46

d. 69

6. Where are chromosomes located?

a. In the DNA

b. In genes

c. In the nucleus of a cell

d. Outside a cell

7. What is the chemical compound that makes up genetic material?

a. Genes

b. DNA

c. Chromosomes

d. Genetic code

8. Which of the following is the time of fastest growth in a person’s life?

a. Infancy

b. Early childhood

c. Middle childhood

d. Late childhood

9. Which of the following is not a developmental task of an infant?

a. Begins to smile

b. Wants companionship

c. Shows strong likes

d. Self-confidence grows

10. Which group is more likely to be diagnosed with scoliosis?

a. Boys

b. Infants

c. Girls

d. Preschoolers

11. Which of the following can impact a child’s development?

a. Vision impairments

b. Hearing impairments

c. Social factors

d. All of the above