Sci - UP Mock Test Flashcards
Tides occur because of the centrifugal force of the Earth-Moon system as well as
the gravitational force exerted by the Moon on the Earth’s oceans
The typical volcanic eruption is strongly influenced by the viscosity and amount of dissolved gases in the magma. The more viscous the material, the greater is its resistance to flow. Which of the following combined characteristics will most likely result in an explosive volcanic eruption?
high viscosity, high amount of dissolved gases
In the Meycauayan River, the amount of rainfall and the corresponding increase in the river level are measured.
The increase in the water level is observed 3 hours after the rain has started.
Under which of the following weather conditions would transpiration be most rapid?
hot, dry weather
The given figure shows a hypothetical evolutionary tree of 5 species (1-5). The letters (a-f) represent the evolution of structures through the course of time.
Which structure shows that species 1, 2 and 3 are more closely related to each other than they are to species 4 and 5?
structure b
Prokaryotic and eukaryotic cells have the following in common except:
mitochondria for ATP production
Certain bacteria can be made to produce marketable levels of a protein product such as insulin. How is this process accomplished?
The protein product is included in the culture medium of the bacterial cells, as the bacteria divide, they incorporate the protein product from the medium and produce more of it
Which of the following samples is a homogenous solution?
H2O (l)
Hydrogen reacts with oxygen to produce water according to the balanced reaction:
2 H2 + O2 -> 2 H2O
If two moles of oxygen gas, O2, were allowed to react with excess hydrogen, H2, how many moles of water would be produced?
2 moles
Which of the following molecules has a pi ( ) bond?
O=O
Mike has three balloons. He filled the balloons separately, each with 1/10 mole of a gas: the first with hydrogen ( H2
), the second with helium ( He ), and the third with oxygen (O2). The three balloons were kept at OC and 1 atm. Which of the following statements about the volumes of the balloons is true?
H2 = He = O2
A ball is rolled with constant velocity up an inclined plane and is dropped at the top edge of the plane.
Which among the following represents the correct y vs. t graph of the ball?
/)
/ )
/ )
/ )
/ )
The image formed by a thin convex lens when an upright object is placed between the focal point and the converging lens is
virtual, erect, diminished
Four bar magnets are arranged into a cross. Which configuration of bar magnet poles will produce the strongest magnetic field at the center?
N
S S
N
