BIO 121 FINAL EXAM ESSENTIALS IN
NUTRITION| COMPLETE QUESTIONS |
VERIFIED ANSWERS | 100% CORRECT |
GRADED A+| PASS GUARANTEED
Which taxonomic domain includes multicellular photosynthetic organisms? -
ANSWER Eukarya
In animal populations, DDT causes: - ANSWER birth defects
An organ, such as the liver, is composed of: - ANSWER tissues
What are the two main types of cells? - ANSWER Prokaryotic and Eukaryotic
Tertiary - ANSWER overall shape of polypeptide chain
chemical interactions of the side chain
Quaternary - ANSWER tertiary chains combined
Nucleic Acids - ANSWER made of nucleotides
nitrogenous base (2-ring purine or 1-ring pyrimidine), phosphate group, sugar
(ribose or deoxyribose)
,Pyrimidines - ANSWER cytosine (DNA and RNA), thymine (DNA only),
uracil (RNA only)
Purines - ANSWER Adenine and Guanine
ATP - ANSWER adenosine triphosphate
essential in energy metabolism
NAD+ - ANSWER electron acceptor in biological oxidation and reduction
reactions
DNA and RNA - ANSWER long chains of nucleotides
store and transfer information
-sequence of amino acids in proteins
-structure and function of an organism
Diffusion - ANSWER net movement of substances down their concentration
gradient
from high concentration to low concentration
does not use direct metabolic energy!!!!
phospholipid molecules - ANSWER amphipathic
hydrophobic fatty acid tail, hydrophilic head
,Plasma membrane - ANSWER fluid!!!! (fluid mosaic model)
physically separates the interior from the exterior of the cell
receives info about changes in the environment
regulates passage of materials in and out of cell
communicates with other cells
forms compartments to allow separate functions
participates in biochemical reactions
biological membranes - ANSWER selectively permeable membranes that help
maintain homeostasis in the cell
What is the role of gene expression in cell differentiation? - ANSWER Different
genes are turned on or off, leading to specialization of cells.
How do plant and animal development differ? - ANSWER Plants cannot move
and grow at meristems, while animals can move and go through stages like blastula
and gastrula.
When did multicellularity appear? - ANSWER Approximately 600 million
years ago.
What are the major groups of plants? - ANSWER Bryophytes (nonvascular
plants) and vascular plants.
What is a key characteristic of bryophytes? - ANSWER They are haploid
dominant, reproduce with spores, and lack vascular tissue.
, What defines vascular plants? - ANSWER They are diploid dominant and have
roots, leaves, and vascular tissue.
What are the two main groups of seed-producing plants? -
ANSWER Gymnosperms and angiosperms.
What is the difference between gymnosperms and angiosperms? -
ANSWER Gymnosperms have 'naked seeds' and rely on wind pollination, while
angiosperms have seeds in fruits and often rely on animal pollination.
What are monocots and eudicots? - ANSWER Monocots have one cotyledon
and limited growth; eudicots have two cotyledons and can grow taller and wider.
What challenges do land plants face in reproduction? - ANSWER Lack of water
for sperm transport, risk of drying out, and UV exposure.
integral membrane/transmembrane proteins - ANSWER embedded in bilayer
extend completely through membranes
peripheral proteins - ANSWER at surface of bilayer
bound to exposed integral proteins
semi-permeable membranes - ANSWER allows passage of some substances
Osmosis - ANSWER type of diffusion
NUTRITION| COMPLETE QUESTIONS |
VERIFIED ANSWERS | 100% CORRECT |
GRADED A+| PASS GUARANTEED
Which taxonomic domain includes multicellular photosynthetic organisms? -
ANSWER Eukarya
In animal populations, DDT causes: - ANSWER birth defects
An organ, such as the liver, is composed of: - ANSWER tissues
What are the two main types of cells? - ANSWER Prokaryotic and Eukaryotic
Tertiary - ANSWER overall shape of polypeptide chain
chemical interactions of the side chain
Quaternary - ANSWER tertiary chains combined
Nucleic Acids - ANSWER made of nucleotides
nitrogenous base (2-ring purine or 1-ring pyrimidine), phosphate group, sugar
(ribose or deoxyribose)
,Pyrimidines - ANSWER cytosine (DNA and RNA), thymine (DNA only),
uracil (RNA only)
Purines - ANSWER Adenine and Guanine
ATP - ANSWER adenosine triphosphate
essential in energy metabolism
NAD+ - ANSWER electron acceptor in biological oxidation and reduction
reactions
DNA and RNA - ANSWER long chains of nucleotides
store and transfer information
-sequence of amino acids in proteins
-structure and function of an organism
Diffusion - ANSWER net movement of substances down their concentration
gradient
from high concentration to low concentration
does not use direct metabolic energy!!!!
phospholipid molecules - ANSWER amphipathic
hydrophobic fatty acid tail, hydrophilic head
,Plasma membrane - ANSWER fluid!!!! (fluid mosaic model)
physically separates the interior from the exterior of the cell
receives info about changes in the environment
regulates passage of materials in and out of cell
communicates with other cells
forms compartments to allow separate functions
participates in biochemical reactions
biological membranes - ANSWER selectively permeable membranes that help
maintain homeostasis in the cell
What is the role of gene expression in cell differentiation? - ANSWER Different
genes are turned on or off, leading to specialization of cells.
How do plant and animal development differ? - ANSWER Plants cannot move
and grow at meristems, while animals can move and go through stages like blastula
and gastrula.
When did multicellularity appear? - ANSWER Approximately 600 million
years ago.
What are the major groups of plants? - ANSWER Bryophytes (nonvascular
plants) and vascular plants.
What is a key characteristic of bryophytes? - ANSWER They are haploid
dominant, reproduce with spores, and lack vascular tissue.
, What defines vascular plants? - ANSWER They are diploid dominant and have
roots, leaves, and vascular tissue.
What are the two main groups of seed-producing plants? -
ANSWER Gymnosperms and angiosperms.
What is the difference between gymnosperms and angiosperms? -
ANSWER Gymnosperms have 'naked seeds' and rely on wind pollination, while
angiosperms have seeds in fruits and often rely on animal pollination.
What are monocots and eudicots? - ANSWER Monocots have one cotyledon
and limited growth; eudicots have two cotyledons and can grow taller and wider.
What challenges do land plants face in reproduction? - ANSWER Lack of water
for sperm transport, risk of drying out, and UV exposure.
integral membrane/transmembrane proteins - ANSWER embedded in bilayer
extend completely through membranes
peripheral proteins - ANSWER at surface of bilayer
bound to exposed integral proteins
semi-permeable membranes - ANSWER allows passage of some substances
Osmosis - ANSWER type of diffusion
