Biology

Increased surface area promotes diffusion. Which of the structures below increases surface area to promote diffusion?

Alveoli

Which of the following is the female reproductive structure of a flowering plant?

Carpel

What is the main purpose of the digestive system?

Provide nutrients to the body

Which of these is NOT a function of the skeletal system?

Provide oxygen

What is the main purpose of the nervous system?

Response to the environment

Where is the place in the lungs where gas exchange occurs?

The alveoli

What is the main organ of the excretory system?

The kidneys

All organisms have to maintain homeostasis and bring oxygen to body cells. To accomplish this task they have some sort of respiratory system. Which best describes the systems you might find in various organisms for bringing in oxygen?

The systems have different structures but similar functions

The structure in the small intestine that increases the rate of passage of nutrients from the digestive system into the blood is ___________________.

Villi

Which of these structures is responsible for transporting water from plant roots to the rest of the plant?

Xylem

Why does your heart rate go up when you run?

You need more oxygen to run

What is the name of the structure marked "A" in this diagram?<img src="https://nlcda.instructure.com/courses/119/files/1193/preview" alt="Biology2-1.jpg"/>

aorta

What is the name of the structure marked "D" in this diagram?<img src="https://nlcda.instructure.com/courses/119/files/1193/preview" alt="Biology2-1.jpg"/>

cardiac muscle

What is the organizational hierarchy found in complex organisms from smallest to largest?

cells, tissues, organs, systems

This drawing shows a cross section of a plant leaf. How does the component marked X contribute to the survival of the plant?<img src="https://nlcda.instructure.com/courses/119/files/1197/preview" alt="Biology2-2.jpg"/>

it allows the intake of gases necessary for photosynthesis

What is the name of the structure marked "B" in this diagram?<img src="https://nlcda.instructure.com/courses/119/files/1193/preview" alt="Biology2-1.jpg"/>

pulmonary vein

What is the name of the tube surrounded by cartilage that leads to your lungs?

trachea

What is the name of the structure marked "C" in this diagram?<img src="https://nlcda.instructure.com/courses/119/files/1193/preview" alt="Biology2-1.jpg"/>

valve

Which of the following best describes the ability of technological devices to take the place of real organs? The artificial organ:

works well enough for people to have a reasonable quality of life