PORTAGE LEARNING BIOD 101 MODULE 1
EXAM QUESTIONS AND ANSWERS VERIFIED
LATEST
What is matter and what states can it exist in
Anything that occupies space. Solid, liquid, gas.
Explain the difference between essential and trace elements
Essential are required for human life. Trace are required, but in small amounts
What is an ionic bond
Generated based on the attraction of oppositely charged particles
What is a covalent bond?
When electrons are shared to create a bond
What is a hydrogen bond?
a weak bond between two partially charged atoms
,Anions are positively charged ions, and cations are negatively charged ions.
False, cations are positively charged (T = +), anions are negatively charged
Which of the following are not one of the organic compounds that make up
biomacromolecules? Lipids, proteins, ribosomes, carbohydrates
ribosomes
What are carbohydrates?
are the primary source of fuel for organisms and have the same three elements in their
main structure: carbon, hydrogen, and oxygen
Why are lipids unique among the biomacromolecules?
The are insoluble in water, not monomers but made from smaller molecules chemically
linked together
Why are lipids insoluble in water?
They are made mostly of non-polar hydrocarbon chains, water is primarily polar, so they
don't mix.
Describe the structure of a phospholipid.
has a polar head (charged phosphate + usually a nitrogen containing group) joined to a
non-polar tail (hydrocarbon composed of non-polar fatty acids)
, Name the functions of proteins as mentioned in the module.
Eat Tasty Ice Cream Sweet and Refreshing
Function as enzymes, transporters, ion channels, antibodies, structural molecules for
support and movement, and receptors
Describe how the shape of a protein is related to its function.
The shape ultimately decides the protein's function. You can think of it like a key, with
the key being the protein and the lock being what that protein can unlock or do within
the organism.
What are the roles of the two major types of nucleic acids?
DNA is a repository of genetic information. RNA deciphers genetic information from DNA
and uses it to synthesize proteins.
Describe the structure of DNA and RNA.
They are both chains of nucleotides. The sugar of on nucleotide is linked to the
phosphate of another and the nitrogenous base protrudes from each sugar in the string.
DNA is a double chain held by together by hydrogen bonds, and RBA is a single chain
What are some of the main differences between prokaryotic and eukaryotic cells?
prokaryotic - small, no nucleus, no organelles, rigid cell wall
eukaryotic - larger with nucleus, has organelles,
EXAM QUESTIONS AND ANSWERS VERIFIED
LATEST
What is matter and what states can it exist in
Anything that occupies space. Solid, liquid, gas.
Explain the difference between essential and trace elements
Essential are required for human life. Trace are required, but in small amounts
What is an ionic bond
Generated based on the attraction of oppositely charged particles
What is a covalent bond?
When electrons are shared to create a bond
What is a hydrogen bond?
a weak bond between two partially charged atoms
,Anions are positively charged ions, and cations are negatively charged ions.
False, cations are positively charged (T = +), anions are negatively charged
Which of the following are not one of the organic compounds that make up
biomacromolecules? Lipids, proteins, ribosomes, carbohydrates
ribosomes
What are carbohydrates?
are the primary source of fuel for organisms and have the same three elements in their
main structure: carbon, hydrogen, and oxygen
Why are lipids unique among the biomacromolecules?
The are insoluble in water, not monomers but made from smaller molecules chemically
linked together
Why are lipids insoluble in water?
They are made mostly of non-polar hydrocarbon chains, water is primarily polar, so they
don't mix.
Describe the structure of a phospholipid.
has a polar head (charged phosphate + usually a nitrogen containing group) joined to a
non-polar tail (hydrocarbon composed of non-polar fatty acids)
, Name the functions of proteins as mentioned in the module.
Eat Tasty Ice Cream Sweet and Refreshing
Function as enzymes, transporters, ion channels, antibodies, structural molecules for
support and movement, and receptors
Describe how the shape of a protein is related to its function.
The shape ultimately decides the protein's function. You can think of it like a key, with
the key being the protein and the lock being what that protein can unlock or do within
the organism.
What are the roles of the two major types of nucleic acids?
DNA is a repository of genetic information. RNA deciphers genetic information from DNA
and uses it to synthesize proteins.
Describe the structure of DNA and RNA.
They are both chains of nucleotides. The sugar of on nucleotide is linked to the
phosphate of another and the nitrogenous base protrudes from each sugar in the string.
DNA is a double chain held by together by hydrogen bonds, and RBA is a single chain
What are some of the main differences between prokaryotic and eukaryotic cells?
prokaryotic - small, no nucleus, no organelles, rigid cell wall
eukaryotic - larger with nucleus, has organelles,
