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1.
Chemistry
Which of the following compounds is an Alkane....
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2.
Biology
In what era did the dinosaurs become extinct?
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3.
Physics
Which of the following is a vector quantity?
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4.
Biology
Which one of the following is a simple sugar?
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5.
Physics
The relation between a concave mirror's center of curvature C and the focal distance F is ....
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6.
Math
The opposite figure shows number of students successfully passing each subject. the number of students who did not succeed in chemistry equals:
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7.
Math
Find the value of b if: $3-2bi=3+8i$
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8.
Biology
It Supports the cell, maintains its shape, and stabilizes the organelles in the cell ....
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9.
Physics
As the velocity of fluid flow increases, the pressure exerted by that fluid....
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10.
Chemistry
The vapor pressure effect on 1 mol NaCl is lower than the vapor pressure effect on.....
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11.
Physics
Based on the following figure: find the electric potential difference between the two plates.
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12.
Chemistry
What are the two last electronic configuration notation in the element silver $\text{Ag}_{47}$?
Knowing that $\text{Kr}_{36}$
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13.
Biology
Which of the following statement is true about mutations?
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14.
Chemistry
Which of the following sublevels is not in an atom?
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15.
Physics
a transformer that its number of turns in primary coil is 200 turns, and 4000turns in secondary coil. if it was supplied with a potential (or effective) difference of 6V calculate the secondary potential difference....
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16.
Biology
Which is considered a general or nonspecific immunity in the body?
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17.
Biology
Location of sperm maturation and storage:
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18.
Biology
The two main groups of flowering plants based on seed type are
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19.
Biology
For the DNA strand 5'-A-C-C-G-T-G-A-C-A-T-T-G-3', the correct compliment DNA would be
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20.
Math
The image of the point (-1, 3) by reflection on line $y=x$ is:
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21.
Chemistry
The name of the compound in the following shape ....
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22.
Math
A set of data is distributed naturally with arithmetic mean equals 12 and standard deviation2, then what is the percentage of $p(10\leq x \leq 16)$ ?
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23.
Biology
What four features do all chordates share at some point during development?
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24.
Math
Find the value: $\lim_{x\rightarrow 4} \frac{x^2-16}{x-4}$ ?
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25.
Math
Find the exact value of $\cos 135^{\circ}$ ?
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26.
Chemistry
Tyndall effect...
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27.
Math
If $\log_x32=5$, then the value of x equals:
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28.
Math
If $\triangle ABC$ is isosceles, find the length of side $BC$?
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29.
Biology
Fertilization in reptiles ...
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30.
Physics
A 100n horizontal force is applied on a 20kg body and moved it with the same direction of the force, the gained acceleration of the body in $m/s^2$ is ....
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31.
Physics
The precision of the measurement of an instrument is ...
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32.
Biology
Substances that make up the CDK cycloenzyme group that control the stages of the cell cycle
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33.
Biology
Which of the following is a disaccharide?
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34.
Biology
What contributes to the transport of substances across the cell membrane
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35.
Math
The center of the ellipse whose equation $\frac{(x+2)^2}{36}+\frac{(y-5)^2}{9}=1$ ; the point
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36.
Math
Which of the following numbers doesn't belong to the domain of the function $f(x)=\sqrt{4-2x}$
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37.
Biology
Which of these groups of animals is most likely to be capable of solving complex problems?
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38.
Chemistry
What's the type of reacting shown?
$\text{CH}_3-\text{CH}_3\rightarrow \text{CH}_2=\text{CH}_2$
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39.
Physics
A racing car increases its velocity (speed) from 4m/s into 36m/s in a time interval = 4s the acceleration of the car in $m/s^2$ unit equals?
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40.
Math
In the opposite figure: what is the value of x?
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41.
Biology
Two adaptations that have helped all flowering plants succeed are
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42.
Math
If $2+\frac{1}{x}=4$, then the value of $x$ is:
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43.
Chemistry
Which of the following increases in size when transformed form liquid to solid?
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44.
Biology
Where do light dependent reactions occur during photosynthesis?
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45.
Physics
What is the induced electromotive force produced from the movement of 1m wire at a speed of 4m/s perpendicular to a magnetic field of strength 0.5T?
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46.
Math
What is the common difference of the arithmetic sequence in which its 5th term is 16, and its first term = -8
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47.
Chemistry
The name of the compound in the following shape ...
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48.
Chemistry
A neutral solution contains two equal concentrations of hydrogen ions and ....
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49.
Biology
Compared with the fish living in the conditions shown in the figure, panel A, the fish living in the conditions shown in panel B are likely to experience
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50.
Physics
A spring was vibrated 60 times fully in 20s, what is its frequency in Hz?
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51.
Biology
Sea stars feed by .........
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52.
Physics
A person pushed a box with a mass of 40kg for a distance of 10m with a constant speed on a horizontal surface its kinetic energy coefficient is $\mu = 0.1$, calculate the work of friction in $J$. (assume that the acceleration of gravity $g=10m/s^2$)
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53.
Math
in the trapezoid $DEGH: x, y$ are midpoints of its legs, find $DE$?
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54.
Biology
What is a radula?
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55.
Biology
The danger of AIDS is that…
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56.
Biology
An organelle that finalizes and packages proteins after they are produced in the ribosomes
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57.
Chemistry
how many moles does a 66g of $\text{CO}_2$ has? knowing that C=12, O=16, H=1 ....
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58.
Math
How many ways can a person enter a mosque which has five doors and exit from a different door?
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59.
Biology
The key difference between animal-like protists and animals is that animal-like protists are
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60.
Chemistry
$2\text{Na(s)}+\text{Cl}_2\rightarrow \text{2NaCl(s)}...$
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61.
Chemistry
When the electronegativity difference between the two atoms is zero, then the compound is....
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62.
Chemistry
What is the order of the following chemical reaction? $R=k[A]^1 \cdot [B]^2$
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63.
Biology
The cancer drug vinblastine interferes with cancer by preventing.
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64.
Math
In the opposite figure; the measure of angle $\theta$ equals
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65.
Biology
What is the role of cyclic proteins in the cell?
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66.
Math
Find the number of sides for a regular polygon, if the measure of its exterior angle equals $30^{\circ}$
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67.
Physics
The power of an electric motor with work of 30000J during 30s ....
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68.
Math
Find the equation of the straight line with slope 4 and passes through the point (-3, -6)?
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69.
Chemistry
if $[H^+] < [OH^-]$ then the solution is
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70.
Physics
When connecting two resistors, R1, R2, in series, you can calculate the current using which formula
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71.
Physics
Beta decay causes ...
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72.
Math
If $\triangle JLM \sim \triangle QST$ find the value of $x$?
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73.
Math
The component form of the vector V where $|v|=8 \ \ \ , \ \ \ \theta =45^{\circ}$ is:
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74.
Math
Find the scalar (inner) product of the two vectors v, u if $v=$❮$-5, 1$❯$\ , \ u=$❮$3, -2$❯?
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75.
Physics
The speed of sound in the air depends on ....
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76.
Math
Determine the type of the Function $f(x)=2x-x^4$?
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77.
Math
The positive geometric mean of the two numbers 12, 3 equals:
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78.
Chemistry
What's the result of the acetone reduction?
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79.
Physics
If the specific heat of zinc is $388j/kg^{\circ}C$ then 97j of heat is enough to ....
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80.
Physics
When an ultraviolet radiation falls on a negative charged zinc board, it ejects an electron from zinc because...
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81.
Biology
Malaria is caused by the parasitic protist
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82.
Physics
The heat absorbed or released from an object does not depend on its ...
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83.
Math
The parabola whose equation $x^2=8(y-4)$ is opened to:
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84.
Chemistry
The oxidation number of chromium in $K_2CrO_4$ is...
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85.
Math
For what value of (a) will the function $f(x)$ be continuous at $x=4$, $f(x)=\left\{\begin{matrix} \frac{x^2-16}{x-4} &,x\neq 4 \\ a &, x=4 \end{matrix}\right.$ is:
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86.
Biology
What is a fruit in biological terms?
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87.
Math
In the opposite figure; the value of $x$ equals:
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88.
Math
What is the derivative of the function $f(x)=\sqrt{7}$
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89.
Math
The disc is divided into 8 equal sectors, what is the probability of spinning an odd number?
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90.
Math
Find the value of the function $f(x) = 2x^2-8$ at $x=-1$
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91.
Physics
A bulb has an illuminance of 2lx, what is it's luminous flux in a distance of 5m?
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92.
Biology
What is the name of the structure shown in the picture?
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93.
Chemistry
Elements in their standard state have a $\Delta H^{\circ}_f$ of ....
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94.
Physics
The energy of a photon is ...
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95.
Biology
Algae are similar to plants because they have ..
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96.
Biology
A Protein that makes up the hair, nails, and animals horns
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97.
Biology
The portion of the DNA molecule that can vary is its
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98.
Biology
During glycolysis the number of ATP molecules used and produced are
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99.
Chemistry
The percent by mass of a solution containing 5g of dissolved solute in 50g of water...
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100.
Math
Find the value of the integration $\int_{1}^{4} 2x \ dx$?
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101.
Biology
Which of the following energy transformations occurs only in autotrophic organisms?
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102.
Math
If $x$ varies inversely with $y$, and $x=24$ when $y=4$ then find the value of $x$ when $y=12$
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103.
Physics
A positive charge of $5\mu C$ is put 30cm from a negative charge of $-4\mu C$, What is the magnitude of the force between them? ($K=9\times 10^9 N.m^2/C^2$)
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104.
Chemistry
Which of the following is an oxidation reaction?
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105.
Biology
Rather than exploring an animal's intelligence, scientists interested in mental skill focus on the animal's
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106.
Math
If the probability of the occurrence of event $A$ is 42%, then the probability of non occurring the event $A$ equals:
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107.
Chemistry
The type of reaction in $\text{C}_2\text{H}_6+\text{Cl}_2\rightarrow C_2H_5Cl$ is ...
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108.
Physics
The power is
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109.
Math
The inverse function of $f(x)=18-3x$ is:
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110.
Chemistry
Which of the following does not have a hydrogen bond?
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