Which scenario below best describes the interaction between the endocrine and reproductive system.

• Hormones are controlled to prepare the body for pregnancy.

• Muscles are contracted, pushing food from the stomach into the small intestine.

• A male rabbit sees and chases a female rabbit.

• A bird lays her eggs, and protects them from possible predators.

Animal body systems often coordinate their actions to carry out specific functions for the whole animal. Which of these correctly describes the interaction of two biological systems for a specific purpose in the human body?

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Identify the two systems that can alert a young bird to danger and help the bird produce the vomit it uses as a defense.

• Nervous and Digestive

• Integumentary and Muscular

• Immune and Respiratory

• Excretory and Reproductive

What type of feedback loop does the diagram represent: positive or negative?

• Thermoregulation represents negative feedback because the body is maintaining homeostasis.

• Thermoregulation represents positive feedback because the body is maintaining homeostasis.

• Thermoregulation represents negative feedback because the body is disrupting homeostasis.

• Thermoregulation represents positive feedback because the body is disrupting homeostasis.

Which system listed below is in the order of cellular hierarchy? (Levels of organization - simple to complex)

• integumentary system -> skin cell -> hair

• nerve cell -> brain -> ganglion - > neurons

• skin cell -> epidermis -> integumentary system

• heart -> lungs - > bronchii -> muscle cell

Which organ of the excretory system stores urine until the body is ready to eliminate it?

• ureters
• urethra
• urinary bladder
• urea

These organs are responsible for what?

• storing urine
• storing water
• filtering blood
• they don't have a particular job 

In a lytic virus like the flu, why is it important to give a patient medicine quickly?

• The medicine will prevent the virus from reproducing

• Lytic viruses act quickly, so they need to be treated fast

• Antibiotics only work once you are sick

• The medicine will slow down the immune system

What makes the lysogenic cycle different from the lytic cycle?

• Lysogenic viruses destroy their host cells after entry

• Lysogenic viruses are dormant before becoming active

• A lytic virus acts slowly and stays with you for life

• Lysogenic viruses make you sick quickly

Which of these describes a difference between viruses and cells?

• Cells have genetic material made of nucleic acid, viruses do not.

• Cells reproduce independently, and viruses require a host to reproduce.

• Viruses are made of proteins, cells are made of ectoplasm

• Viruses have an outer protective layer, cells have no outer protective layer