Body Systems/Pathogens/Taxonomy

An athlete's body senses that it needs more oxygen. Select all of the systems below that will work together to ger her the oxygen she needs to play in the game.

• Digestive

• Excretory

• Respiratory

• Circulatory

• Skeletal

These body systems work together to help someone who has an infection.

Select TWO correct answers.

• digestive

• immune

• circulatory

• excretory

• reproductive

What two important hormones that counterbalance each other to help maintain consistent blood glucose levels.

• glucagon

• estrogen

• protactin

• insulin

Which structures show that this cell is specialized for receiving information signals from many sources?

• dendrites

• myelinated sheath

• central nucleus

• Schwann cell

Viruses and cells have similarities and differences in structure and function. Which statements below are accurate when comparing viruses and cells?

• Viruses have DNA and cells have RNA as their genetic material.

• Cells have organelles to run various cellular functions, while viruses do not.

• Viruses can have DNA as their genetic material, making them retroviruses, while cells do not have DNA.

• Cells connect to surface proteins of host cells with their capsid to aid in recognition, while viruses cannot.

Cells have organelles to run various cellular functions, while viruses do not.

Which statement below best justifies this statement?

• Cells do not have capsids and do not connect to host cells through protein recognition.

• Viruses must take over a host cell in order to function, while a cell has organelles that perform their own functions within the cell.

• Retroviral DNA is the genetic material of most viruses, while cells have non-retroviral DNA.

• The difference in genetic material is the main difference between viruses and cells.

Which labeled viral structure in the diagram above stores viral DNA similarly to the way the nucleus stores cellular DNA?

• 1

• 2

• 3

• 4

This cycle results in the host cell breaking open and the release of more viruses.

• krebs cycle

• lysogenic cycle

• lytic cycle

• viral cycle

HIV attacks cells inside humans called CD4 cells, which causes a disruption of a certain body system. To which system do these cells belong?

• Circulatory System

• Immune System

• Nervous System

• Respiratory System

Which of the following occurs during a lysogenic cycle?

• viral DNA is replicated and the host cell is destroyed

• viral DNA is not replicated and the host cell is destroyed

• viral DNA is replicated and the host cell is not destroyed

• viral DNA is not replicated and the host cell is not destroyed