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75 Cards in this Set
- Front
- Back
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If sugar is dissolved in H20 water is the ____ and sugar is the ____.
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Solvent, Solute
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Which of the following is not an element? Mg, O2, H2 or H20?
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H20
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DNA is the ____ material in all organisms.
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Hereditary
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A hypothesis is a statement that can be ____.
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Tested
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Scientific theories can be _____ if new evidence is gained.
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Revised
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Scientific hypotheses are tested by ______.
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Experimenting
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What is pH? What are the pH numbers? How can you determine if something is an acid or a base?
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0-14. 0-6 is an acid 8-14 is a basic and 7 is neutral.
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What are all the components in a scientific method or experiment?
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Hypothesis, theory, control group, independent variable, dependent variable, conclusion and experimental group.
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Internal balance or stablilty is an example of what?
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homeostatsis
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organic polymers like starch are made up of monomers like?
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glucose
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What is activation energy?
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minimum amount of energy required to trigger a chemical reaction.
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What are the atomic subunits?
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protons, electrons and neutrons
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What element can bind to itself to form long chains?
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carbon
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Glucose is a _____ most commonly used in cellular respiration.
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sugar
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A lipid is?
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one of a class water-avoiding compound.
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What is a protien?
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polymer constructed from a set of 20 amino acid monomers.
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What is a carbohydrate?
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organic compound made of sugar molecules.
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Fatty acids are long hydrocarbon chains consisting of?
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C, H & O
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Maximum cell size is limited because as it grows its ___ increases faster than is surface.
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volume
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cell membranes are mostly made up of a...
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phospholipid bilayer.
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What releases energy from food?
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Mitochondria
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Whats an example of an organ?
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heart
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What is a tissue?
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cooperating unit of many similar cells that perform a specific function.
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What is an organ?
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Unit consisting of several tissues that together perform a special task.
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What is a organ system?
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unit of multiple organs that together perform a vital body function.
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What is the cell theory?
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gernalization that all living things are composed of cells, and that cells are the basic unite of structure and function of all organisms.
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The study of cells improved over the centuries due to the improvements in the light...
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microscope
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Why are the cell membranes considered semi-permeable? (selectivel permeable)
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Selevtively permeable membrane allows some substances to pass more eaisly than others and blocks the passage of some substances altogether.
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The nucleus of a cells contains the?
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Nucleolus, chromatin, and DNA
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What is a difference between plant and animal cells?
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Plant is square and animal is circle.
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____ convert light energy into chemical bond energy.
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Chloroplasts
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Ribosomes produce?
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proteins
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What are the initial reactants of photosynthesis?
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Oxygen and carbon dioxide
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the final products of photosynthesis are?
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Carbohydrates and oxygen
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Te end product of the aeorbic respriation is?
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water and carbon dioxide
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What is prokaryotic?
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cells lacking a nucleus and most other organelles.
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What is eukaryotic?
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cell with a neucleus (surrounded by its own membrane) and other internal organelles.
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Ions are atoms that have more ____ than electrons in their makeup.
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protons
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The krebs sycle occurs in the _____ of the cell.
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mitochondrian
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Photosynthesis, glycolysis and fermation dont use?
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oxygen
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If two atoms share two pairs of electons they form?
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covelent bonds
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_____ is the movement of moelcutes from an area of greater concentration to an area of lesser concentration.
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Diffusion
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_____ is the diffusion of H20 across a membrane or barrier.
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osmosis
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Cells require energy to?
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grow, repair damaged parts, remain highly organized.
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The ____ is the ultimate source of energy.
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sun
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____ is the green pigment that absorbs solar energy.
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chlorophyll
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Volume of a liquid can be measured in what?
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liter or milliliter.
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Moving a potassium ion up a concentration gradients requires? Which is an example of?
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cell energy, ATP
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All life forms use?
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energy, have homeostasis, exhibit cellular organization, exhibit growth and development and reproduce (sexually and asexually)
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Microscopes are mostly found to observe?
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cellular organization
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What is not a life form and why?
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Virus because it cannot reproduce on their own.
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A scientific method starts with?
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observing
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A question posed befor the start of a scientific experiment can be?
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Qualitative, Quantitative and may lead to proving the experiemtns statement true or false.
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An experimental control is identitical t the test minus the?
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independent variable
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In the scientific experiment there can be only one____ but multiple tests.
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control
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A ______is based on the analysis and the evalution of any interrelated experiments.
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Theory
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The difference between an element and a compound is the ability to be?
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broken down chemically
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The atomic number of an element is ____ to that element.
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unique
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The periodic table of elements has rows and columns organized by ____, can be used to determine the number of electrons of one atom,and show what type of bonds each atom must make.
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atomic mass
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An endergonic chemical reaction takes in?
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heat energy
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An enzyme can lower the ____ for the biological chemical reaction.
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activation energy
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Carbohydrates always follow a?
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1:2:1 CHO formula ratio
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Proteins are best characterized by the presence of?
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N
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Nucleic acids are best characterized by the presence of?
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P
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Dehydration sythesis makes fats from glycerol & lipids, makes plysaccharides from simple sugars, plymerizes amino acids to produce peptides and can be reversed by?
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hydrolysis
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___ are characterized by the persence of the hydroxyL radical group.
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Alcohols
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All cells produce?
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proteins and enxymes
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the gogli apparatus works with the?
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endoplasmic reticulum
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Plant cells contain chloroplast and other plasts to assist in the catabolic reactons and they produce?
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oxygen
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Mitochondria are not found in prokaryotic cells, use enzymes and end with synthase, move protons to create a concentration gradient and produce _____, and are not found in anaerobes.
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ATP
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The nucleolus contains the ____ , is the central location point for the chromosomes, uses RNA and proteins,
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genes
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ATP is required for the
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activation transport process
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autotrophs are organisms that?
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make their own food
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Heterotrophs are organism that?
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cannot make their own food. they must eat
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Glucose and oxygen are reactants in?
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cellular respiration
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