Answer the following question given this paragraph: External forces are forces that act on the system from outside. In our previous example, external forces include the force of gravity acting on both cars (because the other part of the force pair, the pull of gravity the Earth experiences coming from the cars, is not included in the system) and the forces of friction between the tires and the road. Q: What do we call forces that act on the system from outside? Choices: - material - internal - static - external A:
external
(Question)
Answer the following question given this paragraph: Figure 4.11 The nucleus stores chromatin (DNA plus proteins) in a gel-like substance called the nucleoplasm. The nucleolus is a condensed region of chromatin where ribosome synthesis occurs. The boundary of the nucleus is called the nuclear envelope. It consists of two phospholipid bilayers: an outer membrane and an inner membrane. The nuclear membrane is continuous with the endoplasmic reticulum. Nuclear pores allow substances to enter and exit the nucleus. Q: Where does the nucleus store chromatin ? Choices: - chloroplasts - ribosome - xerophyte - nucleoplasm A:
(Answer)
nucleoplasm
Ques: Answer the following question given this paragraph: Conduction is the transfer of thermal energy between particles of matter that are touching. Thermal conductors are materials that are good conductors of thermal energy. Thermal insulators are materials that are poor conductors of thermal energy. Both conductors and insulators have important uses. Q: What is the transfer of thermal energy between particles of matter that are touching called? Choices: - convection - activation - radiation - conduction A:
Ans: conduction
(Q).
Answer the following question given this paragraph: Symbiosis is a close relationship between organisms of different species in which at least one of the organisms benefits. The other organism may also benefit, or it may be unaffected or harmed by the relationship. Figure below shows an example of symbiosis. The birds in the picture are able to pick out food from the fur of the deer. The deer won't eat the birds. In fact, the deer knowingly lets the birds rest on it. What, if anything, do you think the deer gets out of the relationship?. Q: What's the term for a relationship between two organisms where at least one benefits? Choices: - dermatitis - morphogenesis - meiosis - symbiosis A:
(A).
symbiosis
Ques:Answer the following question given this paragraph: Gymnosperms have seeds, but they do not produce fruit. Instead, the seeds of gymnosperms are usually found in cones. Q: Where are the seeds in gymnosperms found? Choices: - in leaves - in folds - in roots - in cones A:

Ans:in cones
Ques:Answer the following question given this paragraph: Fermat's Principle states that light will always take the path of least amount of time (not distance). This principle governs the paths light will take and explains the familiar phenomena of reflection, refraction, lenses and diffraction. Light rarely travels in a straight-line path. When photons interact with electrons in matter the time it takes for this interaction determines the path. For example, higher frequency blue light is refracted more than red because blue wavelengths interacts more frequently with electrons than red wavelengths and the path of least time is for blue to bend more then red in order to get out of this 'slow' area faster. The rainbows we see are a result of this. Fermat's Principle explains the many fascinating phenomena of light from rainbows to sunsets to the haloes around the moon. Q: Fermat's principle states that light will always take the path of least amount of? Choices: - energy - momentum - resistance - time A:

Ans:
time