Which macromolecule does NOT dissolve in water?
Lipid
This is the smallest living unit of the human body.
Cell
Blood clotting is an example of this type of feedback.
Positive feedback
NaCl is classified as this type of compound.
Inorganic Compound
Chemical signals produced by the endocrine system are called these.
Hormones
This macromolecule stores genetic information
Nucleic Acid
A group of tissues working together forms this.
Organ
This type of feedback helps maintain stable internal conditions.
Negative feedback
Water is considered this kind of molecule because it has positive and negative ends.
Polar molecule
Which body system removes carbon dioxide from the body?
Respiratory system
Proteins are made up of these smaller building blocks
Amino acids
The digestive and circulatory systems work together to do this.
Transport nutrients through the body
Anhydrosis is the inability to do this.
Sweat
Which cannot be broken down into smaller parts: compounds, elements, macromolecules, or water?
Elements
The circulatory system transports these two important things.
Nutrients and wastes
A double helix represents this molecule
DNA
Which organ system is NOT used to obtain nutrients from food?
Respiratory System
The nervous system works with the muscular system to do this.
Coordinate movement
Water’s polarity helps it dissolve these kinds of compounds.
Ionic compounds
The lungs interact closely with this body system to move oxygen through the body.
Circulatory System
Carbohydrates are mainly used by the body for this purpose
Quick energy
Put these in order from smallest to largest: cell, tissue, organ, organ system.
Cell → Tissue → Organ → Organ System
Homeostasis means maintaining this inside the body.
A stable internal environment
Carbon is important because it can form many bonds, allowing it to build these.
Complex molecules/macromolecules
Explain how two organ systems work together when you exercise.
The respiratory system brings in oxygen while the circulatory system transports it to muscles.