How can you tell if a covalent bond is polar or nonpolar? Covalent bonds that are polar have an unequal sharing of a pair of electrons. This would be determined by an electronegativity difference of the two elements falling between 0.4 and 1.7. Non-polar bonds have less than 0.4 electronegat...
Therefore, it is not possible to pinpoint the exact location of an electron. London dispersion forces are the momentary forces that occur when the electrons concentrate towards one end of the atom. The sudden shift of electrons causes a temporary polarity, drawing other, temporarily polar atoms ...
The Barents–Kara region is significantly affected by climate change, leading to the rapid degradation of habitats and the infiltration of new potential infectious agents dangerous to pagophilic species, particularly the polar bear (Ursus maritimus). For individuals captured in the Barents Sea and the...
What is electronic conduction? What is polarity in biology? What is a polar vortex? What are septal Q waves? What is curvature of spacetime? What are the two movements of the Earth? What is a circumpolar vortex? What is geomagnetic sensor?
This paper attempts to clarify, define and bring about a consensus regarding the usage of the terms apical (defined as relating to, located or situated at, or constituting, an apex that constitutes the tip of a shoot or a root) and basal (the part of a plant organ that is near the p...
Two baby polar bears; part of the extensive display of ontogeny (too often missing in other museums’ exhibits). Asian elephant from Sri Lanka. Lamb birth defect. Like ontogeny, pathology was a major research interest in the original MNHN days. Wild boar birth defect. Fabulous large Indian gh...
To minimise the impact of research on wildlife, collecting samples with as little disturbance of the animals as possible is important. In our review, we assess the use of so-called non-invasive sampling and summarise which samples can be used successfully when carrying out research on wildlife ...
Which best describes intra- and/or intermolecular forces that are broken in water when the salt is added: 1 H -bonds 2 non-polar covalent bonds 3 ion-ion 4 polar covalent bonds What are van der Waals dispersion forces in biology? Provide an example. ...
No exact definition of an “organic” substance has been agreed upon by the chemical community and textbook definitions vary substantially. The question of what exactly constitutes an “organic” substance is explored in this paper. Various carbon-containing substances that have been by some considered...
1. What is ATP? 2. What is ADP? 3. Why does energy need to be transferred from glucose to ATP? Which of the following options is correct? The driving force of facilitated diffusion is a. ATP. b. glucose. c. hydrophobic interactions. d. a concentration gradient. e. the polar c...