Puberty

What system of the body causes chemical changes that signal growth?

• respiratory
• digestive
• endocrine
• excretory

Name the gland that controls growth during puberty.

• endocrine
• pituitary
• thymus 
• adrenal

These chemicals tell the body to change and grow during puberty.

• adrenal
• respiratory
• digestive
• hormones

These systems are responsible for getting oxygen to the cells of the body.

• excretory and endocrine
• respiratory and circulatory
• reproductive and digestive
• digestive and excretory

These systems make you able to move.

• endocrine
• digestive
• respiratory and circulatory
• skeletal and muscular

The reproductive cell of the mother is called an egg or an ____________.

• embryo
• sperm
• ovum
• fetus

The reproductive cell of the father is called _____________.

• ovum
• sperm
• embryo
• fetus

When an egg is first fertilized, it becomes a/an ______________.

• ovum
• sperm
• embryo
• fetus

After 2 months the fertilized egg becomes a/an _____________.

• ovum
• sperm
• embryo
• fetus

The center of a cell is called the ___________.

• nucleus
• middle
• chromosome
• DNA