Answer: No
Can the change in cyclin concentration during mitosis be explained by the fact that the cell divides in two and thus divides the material in the cell into two smaller volumes?
Explanation: The cyclin concentration is not halved but degraded during mitosis.
There is an increase in cyclin concentrations at interphase. These changes are caused by the presence of Cyclin Dependent Kinase (CDK) complexes. CDK being a substrate of cyclin catalyses cyclin, thereby increasing its concentration. During mitosis, cyclins are destroyed, signifying the end of mitosis and cytokinesis.
Without this process, it will be impossible for the cell to exit mitosis.
Answer:
1.21m
Explanation:
If two speakers are generating a frequency of 280Hz, the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them is also known as the wavelength of the sound wave generated.
Using the expression;
Velocity v = frequency f × wavelength ¶
Given frequency = 280Hz, speed of sound v = 338m/s
Substituting this data's in the expression given to get the wavelength will give;
¶ = v/f
¶ = 338/280
¶ = 1.21m
The smallest separation between the speakers that will produce the interference is 1.21m
The acceleration of gravity on Earth is 9.8 m/s² .
The speed of a falling object keeps increasing smoothly,
in such a way that the speed is always 9.8 m/s faster than
it was one second earlier.
If you 'drop' the penny, then it starts out with zero speed.
If you also start the clock at the same instant, then
After 1.10 sec, Speed = (1.10 x 9.8) = 10.78 meters/sec
After 1.85 sec, Speed = (1.85 x 9.8) = 18.13 meters/sec
But you want this second one given in a different unit of speed.
OK then:
= (18.13 meter/sec) x (3,600 sec/hr) x (1 mile/1609.344 meter)
= (18.13 x 3,600 / 1609.344) (mile/hr) = 40.56 mph (rounded)
We did notice that in an apparent effort to make the question
sound more erudite and sophisticated, you decided to phrase
it in terms of 'velocity'. We can answer it in those terms, if we
ASSUME that there is no wind, and the penny therefore doesn't
acquire any horizontal component of motion on its way down.
With that assumption in force, we are able to state unequivocally
and without fear of contradiction that each 'speed' described above ...
with the word 'downward' appended to it ... does become a 'velocity'.
Answer: B - Sphere A is negative and sphere B is positive because electrons from sphere B are attracted to the rod and move to sphere A.
Explanation:
The rod is positively charged which means that it will repel positive charges (protons) and the rod will attract negative charges (electrons)
If you look at all the options that are given each one of them has a flaw, lets look at them one by one for better understanding of the concept:
(A) Sphere A is negative and sphere B is positive because protons from sphere A are attracted to the rod and move to sphere B.
-Incorrect because protons which carry a positive charge CANNOT be attracted by the rod because as by the diagram the rod is also positively charged
(C) Sphere A is positive and sphere B is negative because electrons from the rod move to sphere B and protons then move to sphere A.’
Incorrect because sphere B has protons and not electrons as we can see it in the diagram given below.
(D) Sphere A is positive and sphere B is negative because protons move from sphere B to the rod and also to sphere A.
Incorrect because protons cannot move from sphere B to the rod since the rod is positively charged and like charges always repel.
Answer:
A
Explanation:
If two trucks leave at different times from the same place, headed for the same city, then one thing out of the rest that is true is that the trucks traveled at the same distance in the same amount of time. Hope this helps!
