Answer the following question given this paragraph: Symbiosis describes a close and long-term relationship between different species. At least one species will benefit in a symbiotic relationship. These relationships are often necessary for the survival of one or both organisms. There are three types of symbiotic relationships: mutualism, communalism, and parasitism. Q: What are the three types of symbiotic relationships? Choices: - pledgism, truism, greenism - symbiosis , communalism , parasitism - altruism, conservatism, communalism - mutualism, communalism, parasitism A:
mutualism, communalism, parasitism
(Question)
Answer the following question given this paragraph: Sympatric speciation While the logic and mechanisms of allopatric speciation are relatively easy to grasp (we hope), there is a second type of speciation, known as sympatric speciation, which was originally more controversial. It occurs when a single population of organisms splits into two reproductively isolated communities within the same physical region. How could this possibly occur? What stop (or inhibits) the distinct sub-populations from inbreeding and reversing the effects of selection and nascent speciation? Recently a number of plausible mechanisms have been identified. One involves host selection.143 In host selection, animals (such as insects) that feed off specific hosts may find themselves reproducing in distinct zones associated with their hosts. For example, organisms that prefer blueberries will mate in a different place, time of day, or time of year than those that prefer raspberries. There are blueberry- and raspberry-specific niches. Through a process of disruptive selection (see above), organisms that live primarily on a particular plant (or part of a plant) can be subject to different selective pressures, and reproductive isolation will enable the populations to more rapidly adapt. Mutations that reinforce an initial, perhaps weak, mating preference can lead reproductive isolation - this is a simple form of sexual selection (which we will discuss soon).144 One population has become two distinct, reproductively independent populations, one species has become two. Q: Sympatric type of what occurs when a single population of organisms splits into two reproductively isolated communities within the same physical region? Choices: - biodiversity - extraction - accumulation - speciation A:
(Answer)
speciation
Ques: Answer the following question given this paragraph: Cellular respiration that proceeds in the presence of oxygen is aerobic respiration. Q: What is cellular respiration that proceeds in the presence of oxygen known as? Choices: - kinetic respiration - digestive respiration - anaerobic respiration - aerobic respiration A:
Ans: aerobic respiration
(Q).
Answer the following question given this paragraph: An ionic bond is the force of attraction that holds together oppositely charged ions. Ionic bonds form crystals instead of molecules. Table salt contains ionic bonds. Q: What term means the force of attraction that holds together oppositely charged ions? Choices: - electron bond - magnetic bond - solvent bond - ionic bond A:
(A).
ionic bond
Ques:Answer the following question given this paragraph: There are several other examples of objects that increase their rate of spin because something reduced their moment of inertia. Tornadoes are one example. Storm systems that create tornadoes are slowly rotating. When the radius of rotation narrows, even in a local region, angular velocity increases, sometimes to the furious level of a tornado. Earth is another example. Our planet was born from a huge cloud of gas and dust, the rotation of which came from turbulence in an even larger cloud. Gravitational forces caused the cloud to contract, and the rotation rate increased as a result. (See Figure 10.24. Q: What is said about the speed of rotation in systems that create tornadoes? Choices: - it is magnetic - it is unchanged - it is fast - it is slow A:

Ans:it is slow
Ques: Answer the following question given this paragraph: Nucleic acids are large polymers formed by linking nucleotides together and are found in every cell. Deoxyribonucleic acid (DNA) is the nucleic acid that stores genetic information. If all the DNA in a typical mammalian cell were stretched out end to end, it would extend more than 2 m. Ribonucleic acid (RNA) is the nucleic acid responsible for using the genetic information encoded in DNA to produce the thousands of proteins found in living organisms. Q: What nucleic acid stores the genetic information? Choices: - Nucleus - Ribosomes - molecule - dna A:
Ans:
dna