What are 3 functions of the nucleus? Functions of Nucleus It controls the heredity characteristics of an organism. It main cellular metabolism through controlling synthesis of particular enzymes. It is responsible for protein synthesis, cell division, growth and differentiation. Stores heredity material in the form of deoxy-ribonucleic acid (DNA) strands. What is the function of […]

What is the order of the rock layers from youngest to oldest? The bottom layer of rock forms first, which means it is oldest. Each layer above that is younger, and the top layer is youngest of all. This ordering is relative because you cannot be sure exactly when each layer formed, only that each […]

What antibodies does type AB blood have? The ABO system blood group B – has B antigens with anti-A antibodies in the plasma. blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma. blood group AB – has both A and B antigens, but no antibodies. What are the […]

Why are gametes produced by meiosis? Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes! Does meiosis produce gamete cells? Meiosis is a […]

Which of the following blood vessels would have the slowest blood flow? capillaries What blood vessels would have the lowest blood pressure? Important: The highest pressure of circulating blood is found in arteries, and gradu- ally drops as the blood flows through the arterioles, capillaries, venules, and veins (where it is the lowest). In which […]

Does the heat from the sun reaches Earth through convection? The heat from the Sun reaches Earth through convection. Mantle material rises in cenvection currents because heated materials become more dense. Does convection heat the earth? Convection is the transfer of heat energy in a fluid. Air in the atmosphere acts as a fluid. The […]

What is a difference between starch and glycogen quizlet? Starch is made up of chains of alpha glucose monosaccharides linked by glycosidic bonds that are formed by condensation reactions. The unbranched chains is wound into a tight coil that makes the molecule very compact. Glycogen is very similar in structure to starch but has shorter […]

What would result in an abnormal chromosome number? Abnormal chromosomes most often happen as a result of an error during cell division. Chromosome abnormalities often happen due to one or more of these: Errors during dividing of sex cells (meiosis) Errors during dividing of other cells (mitosis) What disease is caused by abnormal chromosomes? Examples […]

What is the polar head of a phospholipid made of? Both stearic acid (a fatty acid) and phosphatidylcholine (a phospholipid) are composed of chemical groups that form polar “heads” and nonpolar “tails.” The polar heads are hydrophilic, or soluble in water, whereas the nonpolar tails are hydrophobic, or insoluble in water. What type of protein […]

Why do closely related organisms have similar cytochrome c? [Wilson et al, 1977] More closely related organisms will have more similar cyt c because they have more recent common ancestor. The more recent the common ancestor, the less time for DNA mutations to occur. Changes in DNA lead to changes in mRNA leads to differences […]