True or false:
Endocrine secretes hormones into the blood that control growth, metabolism, and stress response
True. The endocrine system is responsible for producing and releasing hormones into the bloodstream, which then travel to various target tissues or organs to control growth, metabolism, and stress response, among other bodily functions.
Read the passage about an athlete.
When an athlete's body temperature begins to climb, blood vessels in the skin dilate. As a result, the athlete's face turns red because warm, oxygenated blood moves to the surface of the skin. This process helps to reduce overall body temperature and prevent overheating.
Which organ system most likely helps to keep an athlete from overheating?
A.
the digestive system
B.
the circulatory system
C.
the respiratory system
D.
the reproductive system
The correct answer is B. the circulatory system. In the given passage, it explains how blood vessels in the skin dilate in response to an increase in body temperature. This allows warm, oxygenated blood to move to the surface of the skin, facilitating heat dissipation and preventing overheating. The circulatory system is responsible for the transportation of blood and plays a crucial role in maintaining body temperature.
Blood consists of many different types of cells. These cells work together to keep a person's blood healthy. Which of the following BEST classifies blood? A. organ B. tissue C. organism D. organ system
The correct answer is B. tissue. Blood is considered a connective tissue because it consists of cells suspended in a liquid matrix called plasma. It is responsible for various functions in the body, including transportation of nutrients, oxygen, and waste products, as well as immune responses and clotting. While blood is essential for the functioning of the entire organism, it is not considered an organ, organism, or organ system itself.
Which of the following is an example of an organ system? A. a human bladder storing waste for removal from the body B. a plant's roots absorbing water and minerals from soil C. the living material that lines the inside of a cheek D. a heart, arteries, and veins all working together
The correct answer is D. a heart, arteries, and veins all working together. An organ system is a group of organs that work together to perform a specific function within an organism. In this case, the heart, arteries, and veins work together as the cardiovascular system to circulate blood throughout the body. Option A refers to an organ (bladder), option B refers to a plant organ (roots), and option C refers to a type of tissue (epithelial tissue lining the cheek), not an organ system.
Which two systems interact most to supply the body with nutrients? A. The endocrine system produces hormones that regulate hunger, and the muscular system assists the body in moving food into the stomach. B. The digestive system breaks down the food to make it available for absorption, and the circulatory system transports the nutrients to parts of the body. C. The nervous system stimulates the appetite, and the excretory system removes waste that was not absorbed by the body. D. The skeletal system absorbs all the nutrients needed for the body, and the integumentary system removes excess liquid from food.
The correct answer is B. The digestive system breaks down the food to make it available for absorption, and the circulatory system transports the nutrients to parts of the body.
In the given options, only option B describes the interaction between two systems that work together to supply the body with nutrients. The digestive system plays a role in breaking down the food through mechanical and chemical processes, making it available for absorption. The circulatory system, specifically the blood vessels, then transport these nutrients to the various parts of the body where they are needed for growth, repair, and energy production.
Which organelle in a plant cell captures radiant energy from the Sun? A. chloroplast B. mitochondrion C. ribosome D. nucleus
The correct answer is A. chloroplast.
Chloroplasts are organelles found in plant cells that specialize in capturing radiant energy from the Sun through a process called photosynthesis. Within the chloroplasts, chlorophyll and other pigments absorb light energy and convert it into chemical energy stored in molecules such as ATP and glucose. This process is essential for plants to produce their own food and is responsible for their green color. Option B, mitochondrion, is responsible for energy production through cellular respiration, but it does not capture radiant energy from the Sun. Options C and D, ribosome and nucleus, respectively, do not have a direct role in capturing radiant energy.
Which one of the previous options is similar to chloroplast
Option B, mitochondrion, is similar to chloroplast. Although they have different functions, both organelles are involved in energy production. Chloroplasts capture radiant energy from the Sun during photosynthesis and convert it into chemical energy. Mitochondria, on the other hand, are involved in cellular respiration and produce ATP, which is the main source of energy for the cell. Both organelles play important roles in energy metabolism within the cell.
The graph below shows how the respiratory system changes as a person goes from resting to running to walking to resting again. The respiration rate is the number of breaths a person takes per minute. Based on the graph, which of the following is a function of the respiratory system? A. to deliver oxygen to cells for cellular respiration at different rates so that different amounts of energy can be made when needed B. to detect changes in the outside world through nerve impulses and send these impulses throughout the body C. to increase the breathing rate during heavy activity so that more carbon dioxide can be absorbed by respiratory cells D. to decrease a person's heartbeat during heavy activity and decrease the flow of blood to areas that will pool with blood
Based on the given information, the function of the respiratory system is most likely A. to deliver oxygen to cells for cellular respiration at different rates so that different amounts of energy can be made when needed.
The graph shows how the respiration rate, which is the number of breaths per minute, changes during different activities. During heavy activity such as running, the respiration rate increases as the body requires more oxygen to meet the increased energy demands. Conversely, during resting periods, the respiration rate decreases as the oxygen demand is lower. Therefore, the respiratory system plays a crucial role in delivering oxygen to cells for cellular respiration, allowing different amounts of energy to be generated as needed by the body.