Question

topic: body systems
which body system provides the body with energy by absorbing nutrients?
a. circulatory system
b. digestive system
c. nervous system
d. respiratory system
for your reasoning, define cell, tissue, organ, and organ system.

topic: immune system
vaccines are made from inactive or weakened microbes that make us ill. what type of immune response does a vaccine cause?
a. specific - it exposes the body to a particular antigen.
b. specific - it exposes the body to a particular antibody.
c. nonspecific - it will prevent infection from a single antigen.
d. nonspecific - it will prevent infection form multiple pathogens.
reasoning:

topic: body systems and homeostasis
human body systems interact to keep blood pressure within a normal range. the diagram below represents this interaction.
which of the following best describes what is occurring in part x of the diagram?
a. respiration remains high as other body systems work with the circulatory system.
b. blood pressure is regulated as the circulatory system shuts down other body systems.
c. blood pressure remains high as the circulatory system shuts down other body systems.
d. homeostasis is maintained as the other body systems work with the circulatory system.
reasoning:

Explanation:

Question 1: Which body system provides the body with energy by absorbing nutrients?

The digestive system breaks down food into nutrients and absorbs them for energy - production. The circulatory system transports substances, the nervous system coordinates body activities, and the respiratory system is for gas - exchange.

Vaccines expose the body to a particular antigen (from the inactive or weakened microbe), triggering a specific immune response. This helps the body recognize and fight the actual pathogen later. Antibodies are produced as a result of the immune response, not exposed by the vaccine. Nonspecific immune responses are general defenses and not related to the specific action of vaccines.

The body maintains homeostasis of blood pressure through the interaction of multiple systems with the circulatory system. Blood pressure is regulated, not remaining high. The circulatory system doesn't shut down other body systems; instead, they work in harmony. Respiration is not the main focus here in terms of what's happening in relation to blood - pressure regulation in the context of this question.

Answer:

B. Digestive System

Definitions:

• Cell: The basic structural and functional unit of all living organisms.
• Tissue: A group of similar cells that work together to perform a specific function.
• Organ: A structure composed of different tissues that work together to perform a particular function.
• Organ system: A group of organs that work together to perform a major function in the body.

Question 2: Vaccines are made from inactive or weakened microbes that make us ill. What type of immune response does a vaccine cause?