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127 Cards in this Set
- Front
- Back
Where is glycogen stored? |
Muscles and liver |
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What does hemoglobin do? |
Carries oxygen throughout our body |
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What type of protein are antibodies? |
Globular |
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Which two protein aid in muscle contractions? |
Actin and myosin (both Globular) |
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What is one difference between DNA and RNA? |
RNA has one additional Oxygen |
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Non-polar molecules, gases, and small molecules move through the phospholipid bilayer by? |
Simple diffusion (Passive transport) |
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Glucose moves through the phospholipid bilayer via? |
Facilitated diffusion (Passive transport) |
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What is the difference between simple diffusion and facilitated diffusion? |
Facilitated requires transport proteins |
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What are two types of passive transport? |
Simple and Facilitated Diffusion |
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What are the types of Endocytosis? |
Phagocytosis Receptor-mediated Endocytosis Pinocytosis |
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What 3 things do all cells have? |
Cell membrane Cytoplasm DNA |
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What is the tangled spread out form of DNA? |
Chromatin |
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DNA condenses into what when it is ready to divide? |
Chromosomes |
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Where are ribosomes created? |
Nucleolus |
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Which organelle makes ATP? |
Mitochondria |
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What helps cells maintain their shape? |
Cytoskeleton |
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What is the cytoskeleton made of? |
Microfilaments (Thread-like protein) & Microtubules (thin hollow tubes) |
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What is going on in cells during interphase? |
Growth, DNA replication, and cell functions |
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What percentage of the cell cycle is made of Mitosis and Interphase? |
Mitosis 10% Interphase 90% |
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What is the part of chromosomes where the sister chromatids are held together? |
Centromere |
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What is happening during prophase? |
Chromosomes are thickening and visible. Nucleus still present in cell |
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What are the stages of mitosis? |
PMAT Prophase, Metaphase, Anaphase, Telophase |
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What is happening during Metaphase? |
Chromosomes line up in the middle of the cell. The nucleus has been disassembled |
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What is happening during anaphase? |
Chromosomes are moving away to opposite sides via spindles attached to opposite centrioles |
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What is happening during Telophase? |
Chromosomes are at the complete opposite ends. New nuclei are forming at opposite ends and surround the chromosomes |
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What is responsible for the final separation into two cells during mitosis? |
Cytokinesis, splitting the cytoplasm into two cells |
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The human genome is split into how many pairs of chromosomes? |
23 |
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Chromosomes contain a long strand of DNA tightly packaged around what? |
Proteins called Histones |
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After a gene switches on what is attached to the the start of the gene? |
Enzyme called RNA polymerase |
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What is a polyunsaturated fatty acid? |
Fatty acid with more than 1 double carbon bond |
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What is a glycolipid? |
Lipid with carbohydrate attached |
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What is a glycolipid? |
Lipid with carbohydrate attached |
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What is a glycoprotein? |
Protein with a carbohydrate attached |
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What is the purpose of glycolipids? |
Act as a marker between cells (mailbox) |
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What is the purpose of a glycoprotein? |
Receptor for signals such as neurotransmitters or hormones |
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What is the role of cholesterol in the cell membrane? |
Maintains its fluidity |
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Where is cholesterol located within the phospholipid bilayer? |
Between the phospholipid tails |
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What is the function of peripheral membrane protein? |
Break down molecules so that they can enter the cell |
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What is an example of a integral membrane protein? |
Channel protein |
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![]() What kind of protein? |
Carrier protein |
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![]() What kind of protein? |
Channel protein |
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Phospholipids are amphipathic, what does this mean? |
They contain both hydrophilic and hydrophobic regions |
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What are the types of cell connections? |
Desmosomes Gap junctions Tight junctions |
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Cell connection that is an anchoring junction found in intercalated discs (skin and heart) |
Desmosomes |
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Cell connection that are openings that let ions pass from 1 cell to the next, found in intercalated discs (heart cells) |
Gap junctions |
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Cell connections that keep space between cells close together (stomach and skin) |
Tight junctions |
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Which cell connection helps keep the integrity of our skin through stress or tugging? |
Desmosomes |
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Which is the tightest cell connection? |
Tight junctions |
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Which cell connection helps keep urine in bladder, making it water tight? |
Tight junctions |
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Which cell connection is known as a communicating junction? Allows ions and small molecules to pass for intercellular communication |
Gap junctions |
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Plasma membrane is selectively permeable. What will it allow to pass through easily? |
Lipids (They are non-polar) Oxygen Carbon Dioxide Alcohol |
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Plasma membrane is selectively permeable. What will need help passing through because they are repelled by the hydrophobic tails? |
Glucose, amino acids, electrolytes, and ions |
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What are the two types of transport across the cell membrane? |
Passive Transport Active Transport |
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What is osmosis? |
Facilitated diffusion of water |
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What protein is required for transport of water across the cell membrane? |
Aquaporin |
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What are 4 types of passive transport? |
Simple Diffusion Facilitated diffusion Filtration Osmosis |
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What is filtration? |
Same as diffusion, but due to hydrostatic pressure. (BP and Glomerular kidney filtration) |
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What are 4 types of active transport? |
Excocytosis Endocytosis Phagocytosis Pinocytosis |
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Moving a solute that is in a vesicle out of a cell, requires ATP, is called? (Neurotransmitters or waste) |
Exocytosis |
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Moving a solute into a cell by engulfing it into a vesicle, requires ATP, Is called? |
Endocytosis |
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What are two types of Endocytosis? |
Phagocytosis Pinocytosis |
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What two types of cells move into a cell via phagocytosis? |
Macrophages and Neutrophils (WBC) |
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Cell takes small amount of extra cellular fluid into the cell via? |
Pinocytosis |
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What two forms of transport are known as bulk transport? |
Exocytosis and Endocytosis |
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Sodium potassium pump is what kind of transport? |
Active Transport |
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What is the issue in cystic fibrosis? |
Cystic fibrosis transmembrane conductance regulator (integral protein) has in issue transporting Cl- ions out of the cell. These expelled ions attract cations like K+ (resulting in osmosis) |
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What is the pH of Intercellular fluid? |
7.0 |
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What is the pH of extra cellular fluid? |
7.4 |
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Composition of solute and solvent is identical to ICF is considered? |
Isotonic |
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Higher concentration of solutes outside of the cell than in ICF is called? |
Hypertonic, net water movement is out of the cell. Can cause cell to shrivel |
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Lower concentration of solutes outside of the cell than in ICF is considered? |
Hypotonic, net water movement is in the cell. Can cause cell to burst |
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What direction does water move within the concentration of solutes? |
From low concentration to high concentration |
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What is the membrane enclosing the nucleus? |
Nuclear envelope, protein-lined pores allow material to move in and out |
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DNA plus associated proteins is called? |
Chromatin |
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What do peroxisomes do? |
Metabolize waste |
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Associated with ribosomes; makes secretory and membrane proteins |
Rough endoplasmic reticulum |
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What does smooth endoplasmic reticulum do? |
Makes lipids |
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What are fibrous proteins that hold organelles in place? |
Intermediate filaments |
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Fibrous proteins; form the cellular cortex |
Microfilaments |
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What is the function of lysosomes? |
Digests food and waste materials |
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What is the function of the Golgi apparatus? |
Modifies protein/ lipids. Processes material to be removed from the cell |
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Which organelle adds sugar to proteins by glyosylation? |
Rough ER |
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Site of protein synthesis |
Ribosomes, 2 RNA subunits to wrap around mRNA and start translation |
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Protein is made in which organelle and modified in which? |
Ribosomes Rough ER |
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Which organelle synthesizes lipids and steroid hormones, stores Calcium, metabolizes some carbs, and breaks down certain toxins? |
Smooth ER |
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Which organelle sorts, modifies, and ships products from rough ER? |
Golgi apparatus |
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What are 2 examples of the steroid hormones the smooth ER synthesizes? |
Testosterone and Estrogen |
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Which organelle contains enzymes that break down, digest, or destroy foreign materials, toxins, or even dead cells? |
Lysosomes |
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The process of lysosomes releasing enzymes to destroy damaged cells is called? |
Autolysis |
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What is controlled cell death? |
Apoptosis |
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Where is mitochondria more common? |
Muscles and nerves |
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Which organelle contains enzymes to produce H2O2 and convert it to O2 and H2O, this will detoxify the cell? Also plays a role in cell metabolism. |
Peroxisome |
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What are 3 types of Cytoskeleton? |
Microtubule Microfilaments Intermediate filament |
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Which cytoskeleton type maintains cell shape, position organelles, and form cilia and flagella? |
Microtubules |
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Which cytoskeleton type consist of actin and myosin in muscles cells for contractions? |
Microfilaments |
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Which cytoskeleton type resists tension on the cell? |
Intermediate filaments |
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What is a difference between microfilaments and Microtubules? |
Microfilaments aid with movement within the cell and Microtubules aid with movement outside the cell |
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Which cytoskeleton type plays a role in the formation of the mitotic spindle? |
Microtubules |
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Peroxisomes are found in abundance in the liver because of their huge role in? |
Detoxification |
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The scarring of the liver is known as? |
Cirrhosis |
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What determines structure and function of a cell? |
Nucleous |
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2 adjacent lipid bilayers that separate the nucleus and the cytoplasm and connects to the ER is called? |
Nuclear envelope |
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What is the regulated pathway for proteins, RNA, and solutes into the Nucleus? |
Nuclear pore |
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Which cells in our body do not have a nucleus? |
RBCs, in order to make more room for hemaglobin |
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Which cells in our body are multi-nucleated? |
Skeletal muscle cells (smooth muscle and cardiac muscle cells only have 1) |
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What are the phases of interphase? |
G1, S, G2 |
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During G1, what are cells doing? |
Growing |
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During S phase of interphase, what is happening? |
DNA synthesis |
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What is happening during G2 phase of interphase? |
Cells continue to grow and prepare of mitosis |
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How many chromosomes does the human cell have? |
46 chromosomes (up to 92 chromatids) |
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What are homologous chromosomes? |
One set of chromosomes from each parent |
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What are the roles of the mitotic spindle during mitosis? |
Prophase - starts to form Metaphase- starts to attach to chromosomes Anaphase- shortens Telophase- breaks apart |
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What is cyclin? |
Checkpoint in cell division |
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When does the cell reach checkpoints in cell division? |
End of G1, end of G2, and end of Mitosis before cytokinesis. |
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Where does transcription in DNA synthesis happen? |
Nucleus |
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Where does translation in DNA synthesis happen? |
Cytoplasm |
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Translation is the process of creating? |
A chain of amino acids (polypeptide) |
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What is responsible for bringing anticodons during DNA synthesis? |
tRNA |
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Unspecialized cells, divide without limit |
Stem cells |
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Unspecialized cells, divide without limit |
Stem cells |
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What are Totipotent cells? |
Can become anything |
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What are pluripotent cells? |
Can become any human tissue cell |
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What are multipotent cells? |
Can differentiate within a certain cell lineage (ectoderm, mesoderm, or endoderm) |
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What are oligopotent cells? |
Can become 1 of a few different cell types |
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What are untipotent cells? |
Can only make more of its own cell type |
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What type of cell is fully specialized? |
Unipotent |
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What is the difference between lysosomes and peroxisomes? |
Lysosomes are responsible for the intercellular digestion of cells and peroxisomes are responsible for the protection of cells against toxins (peroxide) |