Final Flashcards
Carbon is called ____________ because?
the building block of life; carbon atoms are the basis of most molecules that make up living lings
(DESCRIBE USING ROOTS) Monomer
one-part; one subunit of a biomolecule
(DESCRIBE USING ROOTS) Polymer
many-parts; a strand of many monomers
(DESCRIBE USING ROOTS) Macromolecule
large-molecule; large molecules that are critically important to all living things
(DESCRIBE USING ROOTS) Dehydration synthesis
of, from water-to make; process that joins monomers together to form polymers by removing water
(DESCRIBE USING ROOTS) Hydrolysis
water-to break down; breaks polymer down by adding a molecule of water
(DESCRIBE USING ROOTS) Eukaryote
true-nucleus; organisms that have cells containing a nucleus (and therefore, DNA)
Carbohydrates can be broken down, forming?
a source of usable chemical energy for cells (like ATP!)
Carbohydrates
-elements
-monomer
-polymer
-shape
-lab test(s) + results
-foods
-cell structure (or place found in a cell)
-CHO (carbon, hydrogen & oxygen)
-monosaccharides and disaccharides
-polysaccharides
-carbon rings that form hexagons (or pentagons)
-Benedict’s solution (simple sugars; monosaccharides & disaccharides). If molecule is present: color goes from blue to orange
Lugol’s solution (complex carbohydrates; polymers). If molecule is present: goes from red to purple/black
-sugars, fruits, and veggies (simple) pasta, grains, and beans (complex)
-Cholesterol structures in the cell membrane; energy for the cell (mitochondria)
Lipids
-elements
-monomer
-polymer
-shape
-lab test(s) + results
-foods
-cell structure (or place found in a cell)
-CHO (carbon, hydrogen, & oxygen)
-fatty acids
-triglyceride & phospholipids
-triglycerides & phospholipids
-Brown bag test. If molecule is present: paper looks oily
-Saturated: butter
-Unsaturated: oils
-phospholipid layer of the cell membrane (hydrophilic head and hydrophobic tails)
A phospholipid contains…
glycerol, two fatty acid tails, and a phosphate group head
Proteins
-elements
-monomer
-polymer
-shape
-lab test(s) + results
-foods
-cell structure (or place found in a cell)
-CHON (carbon, hydrogen, oxygen & nitrogen)
-amino acids
-polypeptides
-folded polypeptide (protein chain)
-Biuret Reagent. If molecule is present: goes from clear to blue
-meats, eggs, & nuts
-assembled by ribosomes
organisms use ___ different amino acids to build proteins, but our bodies can only make ___. We get the others from the foods we eat.
20; 12
Amino acids form ____________, which form _____________
covalent bonds; peptide bonds
Through peptide bonds, amino acids are linked and become?
polypeptides
Proteins differ in the ___ and ______ of amino acids
number; order
A specific sequence of amino acids determine?
a protein’s structure and function
What causes proteins to fold into specific shapes?
hydrogen bonds
Nucleic Acids
-elements
-monomer
-polymer
-shape
-lab test(s) + results
-foods
-cell structure (or place found in a cell)
-CHONP (carbon, hydrogen, oxygen, nitrogen, & phosphorus)
-nucleotide
-DNA & RNA
-Phosphate and sugar backbone + nitrogenous base (DNA double helix)
-No test! Nucleic Acids found in everything
-Found in every food
-DNA, mRNA, ATP, and tRNA
nucleotides contain…?
a sugar, a phosphate group, and a nitrogenous base
DNA contains the code that?
determines the sequence of amino acids that make up a protein
In chemical reactions, both _______ and _______ stay conserved
matter; energy
What is the difference between prokaryotic and eukaryotic cells? (structure-wise)
Prokaryotes do not have a nucleus nor membrane-bound organelles, but eukaryotes have both of those. Both prokaryotes and eukaryotes have ribosomes (composed of RNA and protein and act as the site of protein synthesis), cytoplasm, and cell membrane.
(ORGANELLE + FUNCTION) Cytoplasm
fills the cell; everything in the cell outside the nucleus is in the cytoplasm
(ORGANELLE + FUNCTION) Ribosomes
located throughout the cell; site of protein synthesis (aka translation)
(ORGANELLE + FUNCTION) Cell membrane
regulates what goes in and out of the cell; forms the cell boundary
(ORGANELLE + FUNCTION) Cell wall
this rigid structure gives protection, support, and shape to cells in plants, algae, fungi, and prokaryotes.
(ORGANELLE + FUNCTION) Centriol
small cylinder-shaped organelle made of protein tubes arranged in a circle that is used to aid in the process of mitosis
(ORGANELLE + FUNCTION) Chloroplast
an organelle found in photosynthetic cells (plants, algae) where photosynthesis takes place
(ORGANELLE + FUNCTION) Cytoskeleton
the cytoplasmic network of protein filaments that plays a major role in cell movement, shape, & division
(ORGANELLE + FUNCTION) Endoplasmic reticulum
a system of membranes that is found in a cell’s cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids
(ORGANELLE + FUNCTION) Golgi apparatus
organelle that helps make and package materials to be transported out of the cell
(ORGANELLE + FUNCTION) Lyosome
organelle that contains enzymes; the “digestive system” of a cell
(ORGANELLE + FUNCTION) Mitochondrion
the organelle that is surrounded by two membranes and that is the site of cellular respiration, which produces ATP for energy
(ORGANELLE + FUNCTION) Nucleus
in a eukaryotic cell, a membrane-bound organelle that contains the cell’s DNA and that has a role in processes such as growth, metabolism, and reproduction
(ORGANELLE + FUNCTION) Vacuole
the organelle that is used to store materials, such as water, food, or enzymes, that are needed by the cell. Plant cells have large, permanent vacuoles while animal cells have smaller, temporary ones that come and go
(ORGANELLE + FUNCTION) Vesicle
a small cavity or sac that contains materials in a eukaryotic cell; it forms when part of the cell membrane surround the materials to be taken into the cell or transported within the cell
How do major organelles relate to biomolcues?
mitochondrion makes energy from carbs, the phosopholipid layer in the cell membrane, ribosomes assist in making proteins, nucleic acids are DNA and mRNA in the nucleus and ATP and tRNA throughout the cell
what are the two major demands of the nucleus?
1) DNA must be carefully protected 2) DNA must be available for use at proper times
The cells DNA is enclosed in a double membrane part of the nucleus called ?
the nuclear envelope
Why do cells typically divide rather than continue growing?
Cells typically divide rather than continuing to grow because the cell needs to constantly make sure it is at its healthiest condition. If the cell kept growing, there would be a point where the surface area to volume ratio is too large, and nutrients wouldn’t get evenly distributed throughout the cell
What happens at each stage of the cell cycle?
Gap1 - cell grows, replicates organelles, and carries out normal functions
Synthesis - copying of the cells DNA (DNA Synthesis)
Gap 2 - Additional growth, preparation and checking for errors before Mitosis
Mitosis - Cell division (Prophase, Metaphase, Anaphase, & Telophase + Cytokinesis)