Answer the following question given this paragraph: The Hardy-Weinberg model describes how a population can remain at genetic equilibrium , referred to as the Hardy-Weinberg equilibrium. Genetic equilibrium occurs when there is no evolution within the population. In other words, the frequency of alleles (variants of a gene) will be the same from one generation to another. At genetic equilibrium, the gene or allele frequencies are stable they do not change. For example, let's assume that red hair is determined by the inheritance of a gene with two alleles R and r . The dominant allele, R , encodes for non-red hair, while the recessive allele, r , encodes for red hair. If a population's gene pool contains 90% R and 10% r alleles, then the next generation would also have 90% R and 10% r alleles. However, this only works under a strict set of conditions. Q: Genetic equilibrium occurs when what process doesn't exist within the population? Choices: - movement - reproduction - variation - evolution A:
evolution
(Question)
Answer the following question given this paragraph: 22.3 Magnetic Fields and Magnetic Field Lines Einstein is said to have been fascinated by a compass as a child, perhaps musing on how the needle felt a force without direct physical contact. His ability to think deeply and clearly about action at a distance, particularly for gravitational, electric, and magnetic forces, later enabled him to create his revolutionary theory of relativity. Since magnetic forces act at a distance, we define a magnetic field to represent magnetic forces. The pictorial representation of magnetic field lines is very useful in visualizing the strength and direction of the magnetic field. As shown in Figure 22.15, the direction of magnetic field lines is defined to be the direction in which the north end of a compass needle points. The magnetic field is traditionally called the Bfield. Q: What is the magnetic field traditionally referred to as? Choices: - m-field - charged field - spicule - bfield A:
(Answer)
bfield
Ques: Answer the following question given this paragraph: Acid-base reactions involve a transfer of a hydrogen ion instead of an electron. Acid-base reactions, like the one below, are also not redox reactions. Q: What is transferred in an acid-base reaction Choices: - bonding ion - friendly ion - calcium ion - hydrogen ion A:
Ans: hydrogen ion
(Q).
Answer the following question given this paragraph: Neutrons, like protons, reside in the nucleus of an atom. They have a mass of 1 and no charge. The positive (protons) and negative (electrons) charges balance each other in a neutral atom, which has a net zero charge. Because protons and neutrons each have a mass of 1, the mass of an atom is equal to the number of protons and neutrons of that atom. The number of electrons does not factor into the overall mass, because their mass is so small. As stated earlier, each element has its own unique properties. Each contains a different number of protons and neutrons, giving it its own atomic number and mass number. The atomic number of an element is equal to the number of protons that element contains. The mass number, or atomic mass, is the number of protons plus the number of neutrons of that element. Therefore, it is possible to determine the number of neutrons by subtracting the atomic number from the mass number. Q: Neutrons and protons reside in which part of the atom? Choices: - molecules - nucleolus - vacuoles - nucleus A:
(A).
nucleus
Ques:Answer the following question given this paragraph: Pea plants reproduce sexually. The male gametes are released by tiny grains of pollen. The female gametes lie deep within the flowers. Fertilization occurs when pollen from one flower reaches the female gametes in the same or a different flower. This is called pollination . Mendel was able to control which plants pollinated each other. He transferred pollen by hand from flower to flower. Q: Fertilization occurs when what material from one flower reaches the female gametes in the same or a different flower? Choices: - ova - nitrogen - sperm - pollen A:

Ans:pollen
Question: Answer the following question given this paragraph: Not all hydrogen atoms in molecular compounds are ionizable. In methane (CH 4 ), the hydrogen atoms are covalently bonded to carbon in bonds that are only slightly polar. The hydrogen atoms are not capable of ionizing and methane has no acidic properties. Acetic acid (CH 3 COOH) belongs to a class of acids called organic acids. There are four hydrogen atoms in the molecule, but only the one hydrogen that is bonded to an oxygen atom is ionizable. Q: Which class of acids acetic acid (ch 3 cooh) belongs to? Choices: - anorganic acids - strong acids - common acids - organic acids A:
Answer:
organic acids