Answer the following question given this paragraph: During the diakinesis stage, chromosomes further condense. The chiasmata remain intact during this stage. The remainder of this stage is similar to prometaphase of mitosis: the nucleoli disappear, the nuclear membrane disintegrates, and the meiotic spindle begins to form. Q: Chromosomes further condensed in which stage? Choices: - tracheophyte stage - zooflagellate stage - zygum stage - diakinesis stage A:
diakinesis stage
(Question)
Answer the following question given this paragraph: Polar compounds, such as water, are compounds that have a partial negative charge on one side of each molecule and a partial positive charge on the other side. All polar compounds contain polar bonds (although not all compounds that contain polar bonds are polar. ) In a polar bond, two atoms share electrons unequally. One atom attracts the shared electrons more strongly, so it has a partial negative charge. The other atom attracts the shared electrons less strongly, so it is has a partial positive charge. In a water molecule, the oxygen atom attracts the shared electrons more strongly than the hydrogen atoms do. This explains why the oxygen side of the water molecule has a partial negative charge and the hydrogen side of the molecule has a partial positive charge. Q: All polar compounds contain what type of bonds? Choices: - balanced - strong - weak - polar A:
(Answer)
polar
Ques: Answer the following question given this paragraph: Light has properties of both a wave and a particle. Q: Light has the properties of both a wave and what else? Choices: - atom - nucleus - electron - particle A:
Ans: particle
(Q).
Answer the following question given this paragraph: Q: What is the multicellular diploid stage called? Choices: - blastocyte - sporangium - lymphocyte - sporophyte A:
(A).
sporophyte
Ques:Answer the following question given this paragraph: Blood vessels help regulate body processes by either constricting (becoming narrower) or dilating (becoming wider). These actions occur in response to signals from the autonomic nervous system or the endocrine system. Constriction occurs when the muscular walls of blood vessels contract. This reduces the amount of blood that can flow through the vessels (see Figure below ). Dilation occurs when the walls relax. This increases blood flows through the vessels. Q: What structures of the cardiovascular system help regulate body processes by either constricting or dilating? Choices: - muscles - cartilage - capillaries - blood vessels A:

Ans:blood vessels
Answer the following question given this paragraph: Potential energy is not only associated with the location of matter, but also with the structure of matter. Even a spring on the ground has potential energy if it is compressed; so does a rubber band that is pulled taut. On a molecular level, the bonds that hold the atoms of molecules together exist in a particular structure that has potential energy. Remember that anabolic cellular pathways require energy to synthesize complex molecules from simpler ones and catabolic pathways release energy when complex molecules are broken down. The fact that energy can be released by the breakdown of certain chemical bonds implies that those bonds have potential energy. In fact, there is potential energy stored within the bonds of all the food molecules we eat, which is eventually harnessed for use. This is because these bonds can release energy when broken. The type of potential energy that exists within chemical bonds, and is released when those bonds are broken, is called chemical energy. Chemical energy is responsible for providing living cells with energy from food. The release of energy occurs when the molecular bonds within food molecules are broken. Q: Potential energy is not only associated with the location of matter, but also with the structure of matter. even a spring on the ground has potential energy if it is what? Choices: - ignored - watched - coupled - compressed A:
compressed