PORTAGE LEARNING BIOD 101 MODULE 1 EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+
What is matter?
Anything that takes up space, has volume and mass
What is autophagy?
When cellular organic matter is broken down and recycled into new biomacromolecules
States of matter
Solid, liqui...
What is matter?
Anything that takes up space, has volume and mass
What is autophagy?
When cellular organic matter is broken down and recycled into new biomacromolecules
States of matter
Solid, liquid, gaseous (vapor), or plasma
What is all matter made of?
Elements
What are essential elements?
Elements required for human life
What are trace elements?
Elements required only in small quantities
How are molecules formed?
When elements combine with one another
What is formed if the types of atoms in a molecule are different from each other?
A compound
What are ions?
Atoms (or molecules) with a net electrical charge that can be negative or positive based
on the gain or loss of electrons
What are cations and anions?
A cation is a positively charged ion; an anion is a negatively charged ion.
What are ionic bonds?
Bonds generated on the attraction between oppositely charged particles
What is a covalent bond?
A chemical bond formed when two or atoms share electrons.
What are polar molecules?
Molecules that have regions of positive and negative charge.
, What is a hydrogen bond?
a weak bond between two partially charged atoms in water molecules
What are the four biomacromolecules?
carbohydrates, lipids, proteins, nucleic acids
What are monomers?
Smaller units from which larger molecules are made
What are polymers?
Molecules made from a large number of monomers joined together
What is a carbohydrate? What elements are they made of, what are their building
blocks, and what are their functions?
Carbs are sugars. C, H, O. Monosaccharides are building blocks, functions are energy
and metabolism.
What are monosaccharides?
simple sugars
What are polysaccharides?
Complex sugars made of many monosaccharides linked together
What is a dehydration reaction?
a chemical reaction that involves the loss of a water molecule from the reacting
molecule
What is starch?
Primary form of glucose storage in plants
Where is glycogen found?
liver and muscle cells
What elements are lipids made of, what are their building blocks, and what are
their functions?
C, H, O. Building blocks are glycerol and fatty acid. Used for energy, structure,
regulation.
Why are lipids unique?
Most are insolvable in water because they are made mostly of non polar hydrocarbon
chains.
What are triglycerides?
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