Questions asked by Sara
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What are continuous and line spectrums?

What are integrin #alpha# and #beta# in biology?

What is the balanced chemical equation of Li(s) + H3PO4(aq) ?

What is differential gene expression?

What is a stem cell?

Are all unicellular organisms haploid? If not, how do we know a cell is haploid or diploid?

Why an egg is so much larger than a sperm cell?

Would the image of an object be the same if we put it in front of a convex mirror, and in front of a diverging lens if they have the same focal length? If not, what would be the differences? (Distance of the object is the same in both conditions.)

#z# is a complex number,
#z=a+ib# and
#(2+i)z=1z#,
what is #z# in terms of #i# ?

#m# is a real number.
#(x^2mx+8) . (x1) = 0# has two distinct roots.
What are all #m# values?

The parabola #f(x) = x^2 + 2(m+1)x + m + 3# is tangent to #x# axis in the negative side. What is the value of #m# ?

If the parabolas given by #y=2x^2+6x+5# and #y=x^2+a# are tangent, what is the abscissa of the tangency point?

Bob is falling down from a height.
If he falls #x^2+5x# m in #x# seconds, how many seconds does it take him to fall #500# m?

How are the terms gene, locus, and allele related?

According to this reaction: #2Al+6HBr > 2AlBr_3 + 3H_2#
If 4 moles of #Al# react with 8 moles of #HBr#, how many moles of #H_2# are formed?

#P(x)# is a polynomial function.
If #P(x^2) = (ab+2)x^3  2x^2 + (2a+b+7)x  20# ,
what is #P(a+b)# ?

If #(x2).P(x)= 3x^3+ax10# , what is #P(1)# ?

If one of the terms of the binomial expression #(x+y3z)^n# is #A*x^3*y^4*z^2# , what is #n# ?

If #f(x) + f(x1) = 3x# and #f(1)=1000#, what is #f(20)# ?

If #f: R  {3} > R  {4}# , and the function #f(x)=(mx+4)/(nx9)# is one to one and onto, what is #f(1/3)# ?

If #f(x)=mx2# , #g(x)=(3x+2n)/6# and #(g@f)(x)# is a unit function, what is #m+n# ?

In order for the function #f(x)=k(x1)+x(k+3)+2# to be a constant function, what should be the value of #k# ?

If #f(x) = 4^(x+1)# , what is #f(2x+3)# in terms of #f(x)# ?

If the function #f(x) = (3xc)/(ax+2)# is a constant function, what is the value of #a*c# ?

What type of compounds cannot be detected using infrared spectroscopy and why?

The #n#th term #u_n# of a geometric sequence is given by #u_n = 3(4)^(n+1)#, #n in ZZ^+#.
What is the common ratio #r#?

Solve the simultaneous equations #log_a(x+y) = 0# and #2log_ax = log(4y +1)# for #x# and #y# ?

If #a# and #b# are unit vectors and #theta# is the angle between them, express #abs(ab)# in terms of #theta# ?

What is the electrode potential for #Pb^(2+)(aq) + 2e^() rightleftharpoons Pb(s)# when the concentration of #Pb^(2+) (aq)# is #0.05# #mol# #dm^(3)# ?