Innostan

A vaccine can be used to produce immunity. Describe how memory cells are important in this process. (3) - correct answerimportant because when individual is in contact with virus again, antibodies can be produced at a faster rate in a secondary immune response, and so the pathogen can be destroyed faster. abiotic - correct answernon-living artery

2024/2025 0.6V - correct answerThe threshold voltage needed before a diode will conduct 1 Coulomb - correct answerThe amount of charge that passes in 1 second when the current is 1 ampere 1 eV in Joules - correct answer1.6x10(-19) Joules 1 Volt - correct answer1 joule of energy moving across 1 coulomb of charge through the component 1/R=1/R1+1/R2... - correct answerTotal resistance in a parallel circuit is 3fm - correct answerThe distance at which the maximum attractive value of ...

At what position on earth is escape velocity lowest? - correct answerlargest initial speed/ke from earth's rotation Boyle's law - correct answerfor a fixed mass of ideal gas at a constant temperature, the pressure is inversely proportional to the volume, V = k/P Charles' Law - correct answerfor a fixed amount of ideal gas at a constant pressure, the volume is directly proportional to the absolute temperature V = kT common silly mistakes to avoid - correct answer- diameter is no...

(Semiconductor) diode - correct answerA semiconductor device with two terminals that allows current to pass only in one direction. Diodes work above a minimum voltage Absorbing photons - correct answerWhen an electron absorbs a photon, if the energy is equal to the energy difference between the energy levels, the electron is excited Absorption - correct answerWhen energy from a signal is absorbed by the optical fibre in which it travels Absorption spectrum - correct answerA spectrum of ...

4.2 - correct answer 5.3 - correct answer 5.8 - correct answer 6.2 - correct answer 6.3 - correct answer 6.4 - correct answer 7.3 - correct answer 8.4 - correct answerC 8.5 - correct answer Air particles in the tyre move more..... - correct answerRandom Baby bouncer should not be used with baby's over 12kg why? - correct answerThe spring may lose its elasticity if too much force is applied Calculate the charge flow? - correct answerDivide the num given Calc...

-. Word equation for mitotic index - How did the distance from the root tip affect mitotic index - correct answerMitotic index = number of cells undergoing mitosis or with visible chromosomes /total number of cells Increased distance caused a decrease in mitotic index, less cells undergoing mitosis Or vice versa Increased distance caused an increase in the number of cells in interphase or cytokinesis Unable to comment on number in cytokinesis and interphase respectively Describe appear...

5 key assumptions of kinetic theory model - correct answer1. molecules are in constant random straight line motion 2. the volume of a single molecule is negligible in comparison to the distance between molecules 3. collisions are elastic (no KE lost) 4. No intermolecular forces between molecules 5. total energy remains constant Compare the mean KE of argon atoms and helium atoms in a gas mixture? - correct answerboth have same mean KE Derivation of the Kinetic Theory Model Equation (5 ...

A particle that moves uniformly in a circular path is accelerating yet moving at a constant speed. Explain this statement by reference to the physical principles involved (4) - correct answerspeed scalar velocity vector (1) direction changes continuously (1) velocity changes (1) acceleration is rate of change of velocity Advantage of using a stranded cable rather than a solid cable of the same cross-sectional area - correct answerlarger surface area so better heat dissipation conditions fo...

1 eV = - correct answer1.6x10^-19 Joules Absolute Refractive Index - correct answerThe ratio between the speed of light in a vacuum and the speed of light in that material Absorption - correct answerWhen some of the signal's energy is absorbed by the material that the fibre is made from leading to a loss of amplitude of the signal Alpha Decay - correct answerOccurs in nuclei of 82 protons or more that consists of an alpha particle being emitted Amplitude - correct answerThe maximu...

_____ is a risk factor that may make a host susceptible to a disease - correct answergenetic predisposition _____ is an example of genetic predisposition - correct answerfamily history a nurse beginning a community assessment should begin with which action? - correct answerdelineate the community geographic area a nurse can gain insight into a community by interviewing - correct answerkey informants (community activists, clergy, and religious leaders) a nurse can gain insight into co...