What is the union of a sperm cell and an egg cell called? Fertilization Embryo Implantation Trimester
Which of the following nutrients helps form the nervous system of an embryo? Calcium Vitamin A Folic acid Iron
Exposure to which of the following may cause birth defects in the second month of pregnancy? Lead Mercury Radiation Smog
What is the result when a zygote implants in the fallopian tube or ovary? Preeclampsia Ectopic pregnancy Miscarriage Stillbirth
How many chromosomes do most human cells have? 12 23 46 69
Where are chromosomes located? In the DNA In genes In the nucleus of a cell Outside a cell
What is the chemical compound that makes up genetic material? Genes DNA Chromosomes Genetic code
Which of the following is the time of fastest growth in a person’s life? Infancy Early childhood Middle childhood Late childhood
Which of the following is not a developmental task of an infant? Begins to smile Wants companionship Shows strong likes Self-confidence grows
Which group is more likely to be diagnosed with scoliosis? Boys Infants Girls Preschoolers
Which of the following can impact a child’s development? Vision impairments Hearing impairments Social factors All of the above