PYC4813
OCTOBER/NOVEMBER 2019
3 HRS/90 MARKS
SECTION A:
1. Protein channels allow ____ molecules to cross cell membrane
___
2. As compared to dendrites, axons usually
Are covered with myelin
3. If all of a neuron’s dendrites or axons were contained within in a spinal cord, it would
be considered a(n) ____ neuron
intrinsic
4. Chemicals are released by axons ___
Into the junction between neurons
5. The circadian rhythm is reset by input from special ganglion cells in the retina. These
ganglion cells are unusual in that they ____
Respond directly to light, but respond very slowly
6. Chromosomes consist of large, double-stranded molecule of ____
Deoxyribonucleic acid (DNA)
7. An example of sex-linked trait is _____
Colour vision deficiency
8. In the explanation of behaviour in evolutionary terms, group selection as an
explanation for altruistic behaviour would entail the argument that ____
______
9. The ability of the brain to change its anatomy over time, within limits, is known as
plasticity
10. Brain cells that are neither neurons nor glia, but which are capable of dividing and
then differentiating into neurons or glia, are called
Stem cells
11. Which of the following best describes the process by which developing axons find
their general target areas?
Chemical attraction
OCTOBER/NOVEMBER 2019
3 HRS/90 MARKS
SECTION A:
1. Protein channels allow ____ molecules to cross cell membrane
___
2. As compared to dendrites, axons usually
Are covered with myelin
3. If all of a neuron’s dendrites or axons were contained within in a spinal cord, it would
be considered a(n) ____ neuron
intrinsic
4. Chemicals are released by axons ___
Into the junction between neurons
5. The circadian rhythm is reset by input from special ganglion cells in the retina. These
ganglion cells are unusual in that they ____
Respond directly to light, but respond very slowly
6. Chromosomes consist of large, double-stranded molecule of ____
Deoxyribonucleic acid (DNA)
7. An example of sex-linked trait is _____
Colour vision deficiency
8. In the explanation of behaviour in evolutionary terms, group selection as an
explanation for altruistic behaviour would entail the argument that ____
______
9. The ability of the brain to change its anatomy over time, within limits, is known as
plasticity
10. Brain cells that are neither neurons nor glia, but which are capable of dividing and
then differentiating into neurons or glia, are called
Stem cells
11. Which of the following best describes the process by which developing axons find
their general target areas?
Chemical attraction
