Recent questions tagged economic-botany

Description : Why does DNA twist ?

Last Answer : If it did not twist, would you expect it to fit into the miniscule cell? As we all know, if we join all of the DNA molecules from a person's body end to end, we would get length three times ... water does not push straight up into thecover slip, but pushes at an angle, which allows it to run out.

Description : What is the difference between an acid and a base ?

Last Answer : Base is any thing, which has a capability to abstract a proton. Using the simplest definition, an acid is something when added to water releases hydrogen ions (H+), also called protons. A ... . According to this definition, acids are electron pair acceptors, and bases are electron pair donors.

Description : What is an analogy for a smooth endoplasmic reticulum ?

Last Answer : Endoplasmic reticulum (ER) is like a manufacturing plant, like a factory, where proteins and lipids are made. This is also where things are packaged into boxed and sent off to different ... Golgi apparatus. It is usually prominent in cells that specialize in lipid metabolism and synthesis.

Description : What is an analogy for microtubules ?

Last Answer : Microtubules have two main functions in cells and in doing so act like a skeleton as well as like railroadtracks. Microtubules are the main structural component of the cytoskeleton in cells, ... cytoplasm through transport proteins called kinesins and dyneins, which act much like railroad cars.

Description : How does the odor of flower petals help pollination ?

Last Answer : The purpose of the perfume is to attract a pollinator - insect, bat, bird or whatever. The reward for the pollinator is a meal of nectar, which is produced by the flower.

Description : He proposed a two-part naming system ?

Last Answer : which classifies every living organism with a string of Latin and Greek identifiers. Full names are devised starting with kingdom and extending downward through phylum, subphylum, class, order, family, genus ... of the organism and used to prevent the confusion that may arise with common names.

Description : Who created the two-part naming system used in biology ?

Last Answer : The scientific naming system that is used worldwide today was first devised by Swedish naturalist Carl Linnaeus in

Description : Why do organisms live in certain places ?

Last Answer : Think of that, the temperature difference in the desert is huge. So in order to survive, the cactus plant reduces heat gain and heat loss as well as water loss. (E.g. narrow pin shaped leaves, long extensive roots)

Description : What is an analogy for a smooth endoplasmic reticulum ?

Last Answer : Endoplasmic reticulum (ER) is like a manufacturing plant, like a factory, where proteins and lipids are made. This is also where things are packaged into boxed and sent off to different ... the Golgi apparatus. It is usually prominent in cells that specialize in lipidmetabolism and synthesis.

Description : What are analogies for centrioles ?

Last Answer : A Centriole is like a straw because they both are tubesthat let things get from one end to the other end. The centriole has a round look to it because it is made from nine triplets of microtubules that make a straw-like (as said above) look.

Description : What are living and nonliving reservoirs ?

Last Answer : Viruses are both living as well as non-living. They have reservoirs of genes. A single nucleotide is a unit of gene. Viral genes make use of host raw material (non-living elements/organic moieties/ ... to scientific name of any other living organism i.e. Tobacco mosaicvirus (read as italic).

Description : What is a characteristic feature of acarrier protein in a plasma membrane ?

Last Answer : Carrier proteins are globular proteins which are specific it their action and thus regulate the entry and exit of particles into the cell. They help in the conduction of ionic substances and polar substances

Description : What is a burette and how is it used ?

Last Answer : A burette is a uniform-bore glass tube with fine gradations and a stopcock at the bottom, used especially in laboratory procedures for accurate fluid dispensing and measurement. The burette ... is simultaneously occupied by the presences of a liquid measuring and transferring this derailment.

Description : What is the difference between xylem and phloem ?

Last Answer : Both xylem and phloem are vascular tissues found in a plant. Xylem is a tubular structure, which is responsible for water transport from the roots towards all of the parts of the plant. Phloem ... the other hand, is responsible for the transportation of food and other nutrients needed by plant.

Description : How do you determine if a molecule is polar or non-polar ?

Last Answer : A polar molecule is a molecule that has a net dipole moment due to its having unsymmetrical polar bonds. Two factors go into determining if a molecule is a polar. To determine if a molecule (or ion ... The polarity of the individual bonds in the molecule; 2) The shape or geometry of the molecule

Description : How does caffeine effect plant growth ?

Last Answer : Minerals like potassium are often found alongside caffeine when it occurs in plant sources like coffee beans, and that could help the plant grow faster. However, the caffeine itself would be unlikely to have ... it and the plant grew at normal rate but the leaves were more wrinkly and browner