Welcome to your CIE A2 Control and co-ordination Which of the folowing is not a characteristic feature of striated muscles? Organised into parallel bundles of myofibrils Muscles are attached to the skeleton Long, branched cells that taper at either end MultinucleatedApplication of gibberellin in barley seeds causes: an increase in dormancy a dicrease in the transcription of mRNA coding for amylase the shedding of aleurone layer an increase in the transcription of mRNA coding for amylaseWhich of the following is incorrect regarding the selective permeability of neurilemma on a resting nerve fibre? Displays very less permeability for organic anions. Displays moderate permeability for chlorine ions. Displays high permeability to sodium ions than potassium ions. Activates sodium and potassium ion pump.A plant hormone which controls the response of plants to environmental stresses. Gibberellin Auxin Abscisic acid CytokininWhich of the following is responsible for saltatory conduction in myelinated neurones? Voltage-gated channel proteins Nodes of Ranvier Axon membranes Schwann cellsThe synapses that use acetylcholine as the transmitter substance is known as: Excitatory synapses Inhibitory synapses Cholinergic synapses Axosomatic synapsesThe small, uncovered areas of axon between Schwann cells. Terminal branches Dendrite Synaptic knob Nodes of RanvierMyelin is made by specialised cells known as _______. Podocytes Schwann cells Rod cells Neuroglial cellsWhich statement describes the biological action of the oestrogen/progesterone contraceptive pill? Increased concentrations of the hormones increase the thickness of the endometrium of the uterus. Increased concentrations of the hormones prevent the shedding of the endometrium of the uterus. Increased concentrations of the hormones suppress the secretion of FSH and LH from the anterior pituitary gland. Increased concentrations of the hormones stimulate a surge in the secretion of LH from the anterior pituitary gland.Select the correct statement about the morning-after pill. This pill cannot be taken by a rape victim to prevent pregnancy. It works for upto 72 hours after intercourse. This is intended to be taken before intercourse. The pill contains both oestrogen and progesterone.Which type of neurones transport impulses from receptors to the CNS? Intermediate neurones Relay neurones Sensory neurones Motor neuronesThe form in which energy is received by the olfactory cells in nose. Heat Sound Chemical potential PressureTime is Up!