Immune System
What is the main function of the immune system?
To defend the body against disease-causing organisms and harmful substances.
What is the main function of the reproductive system?
To produce offspring and pass on genetic information.
A single-celled organism divides to form two identical cells. What kind of reproduction is this?
asexual reproduction?
In an experiment testing if exercise strengthens the immune system, what is one variable you could measure?
Number of white blood cells or recovery rate.
The immune and circulatory systems work together to transport these defenders.
What are white blood cells?
These cells act as the body’s “soldiers,” attacking pathogens like bacteria and viruses.
What are white blood cells?
How many parents are involved in asexual reproduction?
one
what type of reproduction does offspring look identical to the parent?
asexual reproduction
What is one benefit of using a model to study the human immune system?
It helps visualize complex processes too small or dangerous to observe directly.
The nervous system detects a virus entering the body. Which system acts next to destroy it?
Immune system
When you get a vaccine, your immune system “remembers” the pathogen. What is this called?
What is immunity (or immune memory)?
In sexual reproduction, offspring get half of their genes from each parent. Why is this important?
It increases genetic diversity.
which creates more genetic variation or diversity?
sexual reproduction
What is one limitation of using a model of the reproductive system?
Models can’t show exact functions or scale accurately.
How do the excretory and immune systems help maintain homeostasis together?
They remove waste and toxins that could harm the body.
How do the circulatory and immune systems work together to fight infection?
Blood transports white blood cells and antibodies throughout the body to target pathogens.
How is sexual reproduction different from asexual reproduction?
Asexual reproduction created identical cells, while sexual reproduction creates unique cells.
Why does sexual reproduction require two parents but asexual reproduction only one?
Sexual reproduction combines genetic material from both parents; asexual does not.
A student grows bacteria on petri dishes to test how hand washing affects germs. Which Nature of Science skill are they practicing?
Conducting a scientific investigation and identifying variables.
Why is maintaining homeostasis important for both immune and reproductive systems?
A: Stable conditions allow cells and organs to function properly and protect health.
How can fever actually help your immune system fight off infection?
Higher body temperature can slow pathogen growth and boost immune cell activity.
What structure in females releases an egg each month and produces hormones like estrogen and progesterone?
Ovary
Give one advantage of asexual reproduction and one advantage of sexual reproduction.
Asexual: fast and efficient; Sexual: increases genetic diversity.
Scientists often model viruses to study how they infect cells. Why is modeling important for public health?
It allows predictions and testing without real infection risk.
What line of defense includes the skin and mucus?
First line of defense