Term
| What are the four main features of life? |
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Definition
| Metabolism, Reproduction, Evolution, Diversity |
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Term
| what is meant by the statement "life is diverse?" |
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Definition
| there are many different species living on earth |
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Term
| which of these is the correct sequence of smallest to largest |
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Definition
| Protons, Atoms, Molecules, Cells |
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Term
| the bonding properties of atoms are determines by |
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Definition
| number of electrons in the outer orbit of the atom |
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Term
| what are enzymes and what do they do? |
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Definition
| enzymes are proteins, which speed up chemical reactions in cells by lowering the energy required for chemical actions to take place |
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Term
| what is meant by "inheritance' in biology |
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Definition
| the transfer of DNA from parent to offspring |
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Term
| For evolution to occur, allele composition must change from one generation to the next. how can this happen In asexual reproduction? |
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Definition
| Mutations occur that alter alleles |
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Term
| if a population of a single species gets split into two different environments, and each environment requires different traits for survival, what might happen over time? |
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Definition
| the population in each environment would evolve differently to suit the conditions and might eventually become two distinct species |
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Term
| most animals with backbones, vertebrates, have a similar body plan: skull, ribs, two pairs of limbs, tail. what does this suggest about vertebrates? |
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Definition
| Vertebrates are all related to a common ancestor |
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Term
| put the following taxonomic groups in order from smallest to largest |
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Definition
| Phylum Class Order Family Genus Species |
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Term
| What are the standard criteria for determining when a person is dead? |
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Definition
| Not breathing, No brain activity |
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Term
| why did Dr. Semmelweis think that the doctors or medical students might be at fault in causing childbed fever. |
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Definition
| Women treated by them were most likely to contract the disease |
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Term
| what procedure did Dr. Semmelweis order in the hospital that led tot an immediate reduction rate in cases of childbed fever? |
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Definition
| Everyone was required to scrub their hands with bleach prior to assisting with a delivery |
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Term
| how did Charles Darwin's original hypothesis that organism evolved by natural selection become an important scientific theory? |
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Definition
| he and other scientist in many fields of science have tested it over and over again and it never disproved only supported by the evidence they found. |
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Term
| the following statement is not science because of the four scientific assumptions is violated? if people die sudden deaths, their ghost haunts the area where they died because they cant rest in piece. |
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Definition
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Term
| if a scientist does an experiment and gets results, but no other scientist are able to repeat the experiment and get the same results, what does that mean? |
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Definition
| something about the hypothesis, prediction, or experimental design is wrong with the first experiment |
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Term
| what are the three main features of science? |
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Definition
| its based on empirical evidence, its testable, and it can be applied to general situations |
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Term
| is it possible for a scientist to determine what constitutes a good lifestyle? |
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Definition
| No. what is "good" is more of a philosophical question. |
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Term
| what is your best defense against quackery? |
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Definition
| Be skeptical and get your information from a reliable source |
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Term
| which of the following might be and appropriate scientific hypothesis about why some mushrooms tend to grow in a circle? |
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Definition
| Mushrooms mostly grow underground from a central root structure |
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Term
| in science, there is a system of peer-review, where nothing gets published until several other scientist have looked over the work. what is the purpose of this |
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Definition
| to ensure that everything that gets published is as accurate and repeatable as is possible |
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Term
| cell theory says every living thing is made of cells and that |
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Definition
| cells only come from other cells |
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Term
| this organelle is the most prominent in a typical eukaryotic cell and contains the genetic information of the cells |
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Definition
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Term
| this organelle produces ATP to power the cell |
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Definition
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Term
| what is produced by the processes of meiosis |
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Definition
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Term
| why is it important that gametes be haploid? |
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Definition
| because if they weren't, when they joined at fertilization the resulting zygote would have twice the normal number of chromosomes |
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Term
| what is the immediate produce of fertilization |
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Definition
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Term
| what is the major difference between mitosis and meiosis? |
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Definition
| in mitosis, the daughter cells are genetically identical to the parent cell. in meiosis, the four daughter cells are haploid, and genetically unique from original cells |
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Term
| what is unique about embryonic stem cells? |
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Definition
| They can produce all the types of cells that make up a human |
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Term
| how does a stem cell become a heart muscle cell, and once it does, can it change to another type of cell? |
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Definition
| the stem cells differentiate into an outer population, some of which differentiate into muscle cells, and some of those differentiate into heart muscle cells; No, the process can not be reversed. |
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Term
| if a woman is sexually active, about what are the typical odds of conceiving during a single fertility cycle |
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Definition
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Term
| all diploid cell in an organism contain the same DNA or genetic material. true or false? |
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Definition
| True. but only the genes necessary for a given cell to do its particular "job" are expressed |
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Term
| what is the main difference between embryonic and fetal development? |
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Definition
| Fetal development is mainly about the growth after the body systems and structures have mostly all been differentiated during embryonic development |
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Term
| what causes the cells differentiate into different organs and tissues during embryonic development |
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Definition
| all cells contain all the gene from the original zygote but only a few genes receive the signal to be expressed |
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Term
| what are the stages of labor and delivery |
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Definition
| contractions, delivery of the baby, and delivery of the placenta |
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Term
| why are contractions in labor necessary for successful delivery of the baby |
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Definition
| they push the fetus downward which dilates the cervix such that the baby can fit out |
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Term
| what hormone causes contract contractions |
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Definition
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Term
| how do identical twins occur |
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Definition
| one sperm fertilizes one egg and the egg splits early in development |
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Term
| what typically causes a miscarriage |
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Definition
| Genetic or physical defects In the embryo |
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Term
| what is the problem with fetal alcohol syndrome? |
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Definition
| it may cause a host of development problems, hyperactivity, and mental disabilities |
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Term
| list the four micromolecules found in all living things and one function they perform in cells |
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Definition
Lipids-
carbohydrates
Nucleic acid
protiens |
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