Why is water soluble hormones different from lipid soluble hormones? Hormones are released into the bloodstream through which they travel to target sites. Lipid-soluble hormones diffuse through the plasma membrane to enter the target cell and bind to a receptor protein. Water-soluble hormones bind to a receptor protein on the plasma membrane of the cell. […]

How is gastroesophageal reflux disease diagnosed? Advertisement Upper endoscopy. Your doctor inserts a thin, flexible tube equipped with a light and camera (endoscope) down your throat, to examine the inside of your esophagus and stomach. Ambulatory acid (pH) probe test. Esophageal manometry. X-ray of your upper digestive system. How long does Gastroesophageal Reflux last? The […]

What role do insulator sequences play in the regulation of eukaryotic transcription? What role do insulator sequences play in the regulation of eukaryotic transcription? They block binding of transcription factors to enhancers. They block communication between enhancers and nontargeted promoters. They block binding of transcription factors to cis-acting promoter elements. What are the characteristics of […]

Are Tyr TRP2 and TRP1 on the same chromosome? -The TYR, TRP2, and TRP1 genes are identical genes since they are activated by the same transcription factor. -The TYR, TRP2, and TRP1 genes may be located on different chromosomes but with identical operator sequences. Which of the following claims best explains why keratinocytes do not […]

How does bacteria acquire antibiotic resistance? There are two main ways that bacterial cells can acquire antibiotic resistance. One is through mutations that occur in the DNA of the cell during replication. The other way that bacteria acquire resistance is through horizontal gene transfer. What is the first step in the process of selection? There […]

What are models of intelligence? Three of the intelligences – linguistic, logical-mathematical, and spatial – are similar to abilities measured by conventional intelligence tests. They are also represented by some of the Stratum II broad abilities found in the three psychometric models described earlier. What are the components of intelligence? requiring intelligent performance. Thurstone (1938) […]

Where does crossed extensor reflex occur? Crossed Extensor Reflex The reflex occurs when the flexors in the withdrawing limb contract and the extensors relax, while in the other limb, the opposite occurs. An example of this is when a person steps on a nail, the leg that is stepping on the nail pulls away, while […]

What do Autotrophs use as a carbon source? Carbon dioxide – a majority of autotrophs need carbon-dioxide to synthesis their own food as a source of energy. That is, carbon-dioxide is for the most part the source of carbon that is required to produce carbon based molecules (organic molecules like glucose). How do Autotrophs obtain […]

How are fatty acids and monoglycerides absorbed in the small intestine? Monoglycerides and fatty acids enter absorptive cells in the small intestine through micelles; they leave micelles and recombine into chylomicrons, which then enter the bloodstream. Where or how are fatty acids absorbed from the small intestine? Despite being hydrophobic, the small size of short-chain […]

Which is a cause of polarity in water molecules? When the two hydrogen atoms bond with the oxygen, they attach to the top of the molecule rather like Mickey Mouse ears. This molecular structure gives the water molecule polarity, or a lopsided electrical charge that attracts other atoms. The end of the molecule with the […]