Why is it important that all cells have a cell membrane?

• It supports the cell wall.

• It controls all cellular functions.

• It is responsible for making DNA for the cell.

• It is the protective barrier that encloses the cell.

Tags

NGSS.MS-LS1-2

Which is the main purpose of the digestive system?

• to add oxygen to food particles

• to fill the stomach with food particles

• to turn food into nutrients the body needs

• to transfer food from one organ to another organ

Which term describes how the nervous and endocrine systems work together to create balance within the human body?

• external function

• homeostasis

• equilibrium

• instability

Ricky observed this organism under the microscope. Which organism did he observe?

• a volvox, because it has cilia

• a euglena, because it has cilia

• an amoeba, because it has cilia

• a paramecium, because it has cilia

Tags

NGSS.MS-LS1-1

Which statement best explains how organ systems in the human body function?

• They work at different times to conserve energy.

• They work together to benefit the entire organism.

• They work at different times, depending on their job.

• They work independently of each other, for efficiency.

Tags

NGSS.MS-LS1-3

Which systems are involved with the breakdown and delivery of nutrients from recently eaten food to the cells and the removal of waste materials from the body?

• excretory, skeletal, and digestive

• digestive, nervous, and endocrine

• excretory, circulatory, and nervous

• digestive, circulatory, and excretory

Which two body systems are most affected when a person is participating in a long jump?

• skeletal and muscular

• skeletal and digestive

• endocrine and muscular

• endocrine and digestive

Which explains how the circulatory system and respiratory system work together to sustain the human body?

• The respiratory system takes in oxygen that is carried by the circulatory system throughout the body.

• The respiratory system and circulatory system work to regulate temperature by cooling or warming the body.

• The respiratory system takes in carbon dioxide that is carried by the circulatory system to cells for respiration.

• The respiratory system and circulatory system both excrete waste to the digestive and excretory systems.

Marc eats a well-balanced diet and takes vitamins. Yet, test results show that Marc has a vitamin deficiency. Which of Marc’s body systems are most likely not functioning properly?

• the respiratory and circulatory systems, because the vitamins are being released as waste

• the digestive and excretory systems, because his body is not absorbing the vitamins in the food he eats

• the respiratory and digestive systems, because the exchange of oxygen and carbon dioxide is being affected

• the digestive and nervous systems, because the vitamins are not being transported to the right places in his body

Tags

NGSS.MS-LS1-3

What body system assists the respiratory system by pulling the rib cage down to allow air to flow in?

• skeletal

• muscular

• endocrine

• circulatory