ISB Exam 1
Order by
76 terms
Terms | Definitions |
|---|---|
 Major difference between science and religion? | Science is what you can prove, religion is what you believe |
| Inductive reasoning | assumes that the observations for a small set of facts are true for the entire set of facts |
| Deductive reasoning | Assumes specifics from generalities. "all birds have wings..." |
| Do scientists know how life began? | No |
| Who was Carl von Linne? | Swedish scientist who created the Linnaeus system of classification |
| Why don't antibiotics kill viruses? | Viruses aren't alive |
| What are the four categories of macromolecules? | Polysaccharides, proteins, lipids, nucleic acids |
| Is sucrose the "sugar of life" | No. Glucose is. |
| True/False: Most simple sugars are made up of the same elements. | True. Carbon, hydrogen, and oxygen. |
| Which is usually larger, an atom or molecule? | Molecule |
| What is metabolism? | Obtaining, using, and storing energy |
| Are electrons of an atom positive or negative? | Negative |
| Which is the larger molecule, sucrose or glucose? | Sucrose. Made from glucose and fructose. |
| Simple sugars can be in rings or... | strands |
| Is there a gene for monogamy in voles? | In prairies voles, yes. Not in meadow voles. |
| Why do soil particles attract cations? | The soil contains negatively charged hydrogen ions |
| Chitin is an example of which of the four macromolecules? | Polysaccharides |
| How similar are estrogen and testosterone? | EXTREMELY |
| What hormone is primarily responsible for human libido? | Testosterone |
| Taxonomic classification | Kingdom, phylum, class, order, family, genus, species. |
| How many kingdoms are there? | Six. Archaebacteria, eubacteria, animals, plants, fungi, protista. |
| Major difference between prokaryote and eukaryote | Organelles |
| Which can live in more extreme conditions archae or eubacteria? | Archaebacteria |
| What organisms likely generated most of the oxygen we breath? | Archaebacteria |
| Why is a neutral soil pH best for plant growth? | A neutral pH is where most nutrients are most soluble |
| Are animals eukaryotes or prokaryotes? | Eukaryotes |
| Every cell is surrounded by a ____ membrane | Plasma |
| What can autotrophic organisms do? | Produce their own energy |
| Why do people in developing countries eat a combination of seeds from cereals and broadleaf plants? | Protein |
| People who consume no meat or milk products have to make sure they get a proper balance of essential... | amino acids |
| In recent research, monkeys were cured of what visual problem by gene therapy? | Red-green color blindness |
| Why are prostistas considered to be the likely ancestors of fungi, plants, and animals? | Some are single celled, some are multicellular |
| How do fungi get their food? | Fungi are chemoheterotrophs. They ingest organic building blocks that they are incapable of creating on their own. |
| What is the original source of most of the energy we use? | The sun through plants |
| What is produced during respiration? | CO2, H2O, and energy |
| What are the two important products of photosynthesis? | O2 and glucose |
| A ___ is the smallest unit of life capable of reproducing on its own. | Cell |
| Do you have cell walls? | No |
| Plant and animal cells are more similar than different. True or false? | True |
| Respiration occurs in what organelles? | Mitochondria |
| Most abundant carbohydrate in nature? | Sucrose |
| Why do people in LDCs eat very little meat? | Can't afford to maintain livestock |
| A flagellum is found mostly on what types of organisms? | Bacteria |
| What macromolecules provide "nature's waterproofing?" | Lipids |
| There are 10x more ____ in your gut than cells in your body | Bollocks |
| Which is more saturated, butter or cooking oil? | Butter |
| Sleep deprivation influences our ability to think and reason | Sleep deprivation influences our ability to think and reason |
| Most of our body fat is a combination of phospholipids and sterols. True or false? | False. Triglycerides make up 90% of our total body fat. |
| Why do phospholipids work so well as membranes? | Lipid bilayers |
| When phospholipids line up to form membranes, do their "heads" point toward each other or away from each other? | Away |
| In phospholipids, which are hydrophilic, the heads or the tails? | Heads |
| All cholesterol is bad for humans. T or F? | False |
| ic version ____ (HDL or LDL??) which was effective in reducing damage from heart disease. | HDL |
| Why is food distribution such a huge problem in the world? | There are lots of people out there |
| Estrogen is an example of what type (category) of lipid? | Sterol |
| Most (but not all!) hormones are what category of macromolecules? | Proteins |
| Which speed up chemical reactions, hormones or enzymes? | Enzymes |
| Which are the largest molecules, lipids, starches, or proteins? | Proteins |
| What kind of nucleic acid plays a role in respiration? | ATP |
| How old is the universe thought to be? | >12 BILLION years |
| How old is the earth? | 4.6 billion years |
| What is happening today that makes the Big Bang theory plausible? | Stars are constantly forming on the Eagle nebula |
| What is the scientific explanation for finding fossils of similar animals in eastern S. America and western Africa? | Shifting plates. PANGEA |
| What has happened to the diversity of species of organisms over millions of years? | It has increased |
| What may a cell's organelles once have been? Why do scientists think so? | History of life lecture, slide 22 |
| In geological time, are epochs part of periods or vice versa? | Epochs are part of periods |
| How long ago did people change to organized food production? | 10,000 years ago |
| What era did the first mammals appear in? | Mesozoic era |
| Did humans and dinosaurs live at the same time? | NO |
| Mammals began to flourish and dinosaurs died off at the beginning of this Era. What is its name? | Cenozoic era |
| According to archaeological evidence, about how long have human-like animals inhabited the earth? | 1.65 million years |
| What are stromatolites | Fossilized mounds of prokaryotes in ocean sediment formed > 3 Bya |
| About how long ago did life forms appear on earth? | 3.8 billion years ago |
| Is it possible to create amino acids in labs using methane, water, ammonium and hydrogen gas? | Yes |
| What organisms are involved in some way in all the nitrogen we consume? | Bacteria |
| What good things do bacteria do? | Manufacture antibiotics, break down toxins in the environment, useful in food processing |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.