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How does the cardiovascular system interact with the respiratory system?

A.
Blood helps the brain interpret different smells.

B.
Blood helps the lungs to inflate and deflate to breathe.

C.
Blood transports oxygen from the lungs to other organs.

D.
Blood transports nutrients from the stomach to other organs.

11 answers

The correct answer is C. Blood transports oxygen from the lungs to other organs.

The cardiovascular system and the respiratory system work closely together to deliver oxygen to the body and remove carbon dioxide. The respiratory system is responsible for taking in oxygen from the air into the lungs, where it then diffuses into the blood. The cardiovascular system (heart and blood vessels) pumps this oxygen-rich blood from the lungs to all the organs and tissues of the body.

Cells contain a certain structure that acts as a gatekeeper in order to maintain homeostasis. This gatekeeper controls what is able to enter and exit the cell. Plant cells produce oxygen as a waste product. What cell structure allows this oxygen to pass into the environment?

A.
chloroplast

B.
vacuole

C.
endoplasmic reticulum

D.
cell membrane

The correct answer is D. cell membrane.

The cell membrane acts as a gatekeeper, controlling what substances can enter and exit the cell. In the case of plant cells, oxygen, produced as a waste product during photosynthesis in the chloroplasts, can pass through the cell membrane into the environment.

In the diagram below, structure A is labeled in two different types of cells. Which statement gives the best description of structure A?

A.
It helps regulate what enters and exits both cells.

B.
It helps absorb sunlight for both cells.

C.
It converts chemical energy into usable energy for both cells.

D.
It contains the DNA for both cells.

The correct answer is A. It helps regulate what enters and exits both cells.

If structure A is the cell membrane, it is responsible for regulating the movement of substances in and out of the cell, maintaining homeostasis. This function applies to both plant and animal cells, as both types have cell membranes that perform this critical role.

The digestive system includes groups of tissues that absorb nutrients from food that has already been broken down. What is the best way to classify this group of tissues?
A.
an organelle

B.
an organ system

C.
an organ

D.
an individual organism

The best way to classify this group of tissues is B. an organ system.

The digestive system is comprised of multiple organs (like the stomach, intestines, and liver) working together to break down food, absorb nutrients, and eliminate waste. Therefore, it is considered an organ system.

The diagram shows a plant cell.

Which statement best describes the organelle labeled X?
A.
The ribosome creates proteins for the cell.

B.
The mitochondrion creates energy for the cell.

C.
The nucleus stores most of the genetic information for the cell.

D.
The nucleus controls everything that enters and exits the cell.

The best statement that describes the organelle labeled X, assuming X is the nucleus, is C. The nucleus stores most of the genetic information for the cell.

The nucleus is known for containing the cell's genetic material (DNA) and plays a key role in regulating cellular activities, including growth, metabolism, and reproduction. However, it does not directly control what enters and exits the cell (as that is the role of the cell membrane). Therefore, option C is the most accurate description.

Michael almost gets into an accident in his car. How does his organ systems respond to this event?
A.
All of his organ systems stop working.

B.
His heart beats faster and his breathing rate increases.

C.
His respiration rate slows down.

D.
All of his neurons become paralyzed for ten seconds.

The correct response to how Michael's organ systems would react to nearly getting into an accident is B. His heart beats faster and his breathing rate increases.

This reaction is part of the body's immediate response to stress or danger, often referred to as the "fight or flight" response. His body would prepare for quick action by increasing heart rate and respiration rate to supply more oxygen and energy to the muscles.