Ib biology topic notes

Vascular bundles are randomly spread through out the stem Vascular bundles are arranged in a ring Parallel venation in leaves Floral organs are in multiples of 3 Floral organs are in multiples of 4 or 5 New roots form from the stem New roots branch from pre-existing roots 9. Upper epidermis - Consists of a single layer of cells found on the upper surface of the leaf.

Ib biology topic notes

Minor stroke on video https: Use models as representations of the real world—the sensory homunculus and motor homunculus are models of the relative space human body parts occupy on the somatosensory cortex and the motor cortex.

A neural tube forms along the whole dorsal side, above the gut, near the surface Most of the neural tube becomes the spinal cord; however, the anterior end expands and develops into the brain during cephalization development of the human head The brain is a central control centre for the body. It synthesizes the hormones secreted by the posterior pituitary gland and releases factors that regulate the secretion of hormones by the anterior pituitary gland Pituitary gland — the posterior lobe stores and releases hormones produced by the hypothalamus.

Use of animal experiments, autopsy, lesions and fMRI to identify the role of different brain parts. Lesions are due to tumours, strokes or other damage to the brain that can be studied post-mortem through autopsies.

Lesion studies have occurred since the 19th century By studying where these lesions are located, observed changes in behaviour and mental capacities, one can make conclusions about the damaged areas of the brain and what effects the damaged portions had when the individual was living.

A comprehensive guide.

In the 's, patient named Leborgne, could only speak one word, whereas another, Lelong, could only speak a few.

When they died, Broca examined their brains and found lesions in the same location. He deduced that this region was responsible for language.

Since then many studies including fMRI have confirmed this. Visual Cortex — area of the brain that receives neural impulses from light sensitive cells called rods peripheral vision and dim light and cones visual acuity.

It is located in the left cerebral hemisphere. If this area is damaged, the person can recognize speech and know what they want to say; however, they cannot put together meaningful words and sentences Nucleus accumbens — This is the pleasure reward centre that is located in both cerebral hemispheres.

Pleasurable stimuli such as food or sex cause the release of dopamine, which produces feelings of pleasure and satisfaction.Consistently named one of the top Universities in TN and the South, CBU is your home. CBU is a student body full of diverse cultures, faiths and interests.

> A process of sequencing DNA, to produce a single stranded DNA strand, complementary to the DNA being sequenced. 1) Strand being sequecned is cut into sections base pairs long using restriction enzymes.

Course materials, exam information, and professional development opportunities for AP teachers and coordinators.

Ib biology topic notes

Notes includiong all options up to date for examinations; Notes including all options from the IB Notes Wiki; Topic 4 + option G interactive syllabus from timberdesignmag.com This is my first year teaching biology abroad (in Bulgaria) and first year teaching IB (I have taught biology before, but a quite different curriculum with a different set of resources).

I . Online homework and grading tools for instructors and students that reinforce student learning through practice and instant feedback.

IB Biology - Wikibooks, open books for an open world