How does structure work in C? Structure is a user-defined datatype in C language which allows us to combine data of different types together. Structure helps to construct a complex data type which is more meaningful. It is somewhat similar to an Array, but an array holds data of similar type only. In structure, data […]

How do karyotypes determine genetic disorders? Clinical cytogeneticists analyze human karyotypes to detect gross genetic changes—anomalies involving several megabases or more of DNA. Karyotypes can reveal changes in chromosome number associated with aneuploid conditions, such as trisomy 21 (Down syndrome). Can a genetic disease be diagnosed with a karyotype? A chromosomal karyotype is used to […]

How do B lymphocytes respond to foreign antigens? B lymphocytes produce antibodies – proteins (gamma globulins) that recognize foreign substances (antigen) and attach themselves to them. B lymphocytes (or B cells) are each programmed to make one specific antibody. T lymphocytes are cells that are programmed to recognize, respond to and remember antigens. Are antigens […]

Do frogs like light or dark? Tree frogs are nocturnal. They don’t require sunlight, but they do need lighting that mimics a day and night cycle in their habitat. If they’re in a dim room, light the terrarium for 12 hours daily with a fluorescent bulb. At night, switch to a night-specific bulb so you […]

What is the fluid mosaic model of the cell membrane? The fluid mosaic model describes the cell membrane as a tapestry of several types of molecules (phospholipids, cholesterols, and proteins) that are constantly moving. This movement helps the cell membrane maintain its role as a barrier between the inside and outside of the cell environments. […]

How is blood evidence collected at a crime scene? Liquid blood evidence is generally collected from blood pools but can be collected off of clothing as well, using a gauze pad or a sterile cotton cloth. Once the sample is collected it must be refrigerated or frozen and brought to the laboratory as quickly as […]

What is the process of turning food into energy called? The source of the energy required to regenerate ATP is the chemical energy stored in food (e.g. glucose). The cellular process of releasing energy from food through a series of enzyme-controlled reactions is called respiration . What are the 5 metabolic processes? A summary of […]

How are dominant alleles represented? A dominant allele is denoted by a capital letter (A versus a). Since each parent provides one allele, the possible combinations are: AA, Aa, and aa. Offspring whose genotype is either AA or Aa will have the dominant trait expressed phenotypically, while aa individuals express the recessive trait. How are […]

What lists the correct order of evolutionary history? The lists of the correct order of evolutionary history is Jellyfish, Reptiles, Mammals. This three are classified as vertebrates and all I know that almost all the animals we know are vertebrates. Which fields of science provide evidence for evolution? Evidence for evolution comes from many different […]

What elements are found in meteorites? It seems amazing that the abundant minerals of meteorites are composed of only eight or so of these elements: oxygen (O), silicon (Si), magnesium (Mg), iron (Fe), aluminum (Al), calcium (Ca), sodium (Na) and potas- sium (K). What has been detected in meteorites that have fallen to Earth? Summary: […]