What chemical controls concentration of urine and what is this process called? Chemotaxis is movement in response to concentration of chemical substances. Melatonin influences sexual development and sleep-wake cycles. What is homeostasis? The chromosomes line up on the equator of the spindle attaching to a spindle at their centromere. What does an artificial pacemaker do? The offspring are neither red nor write but are intermediate between the two. Pulmonary artery: carries blood from the right side to the heart to the lungs it is the only artery that carries deoxygenated blood 4. To kill bacteria and provide an optimum pH for enzymes.
BMAT Biology Revision Notes - Free download as Word Doc .doc /.docx), Haemoglobin accepts hydrogen ions to form haemoglobinic acid. It takes the form of a gigantic, page A4 spiral-bound tome. Our students Here's a selection of notes from Physics, Biology and Chemistry.
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What's the function of the cell membrane? Nucleus, mitochondria, ribosomes, cytoplasm, cell membrane, Nucleus, mitochondria, ribosomes, cytoplasm, cell membrane, cell wall, chloroplasts, large permanent vacuole.
Moist: Surface gases diffuse very rapidly in solution Steep Diffusion Gradient: this is maintained by the blood flowing constantly through the capillaries so that blood full of oxygen is constantly being replaced with blood that is deoxygenated.
The peripheral nervous system consists of sensory neurons, which carry impulses from receptors to the CNS and motor neurons, which carry impulses from the CNS to effectors.
Finding food: sea anemones wave their tentacles more when stimulated by chemicals emitted by prey.
The vertebra are flexible to allow sideways movement. A section of DNA which codes for a specific protein. The following can be noted: That all limbs have five sets of bones; A single upper bone- the femur in hind limb and the humerus in fore limb Two lower limb bones -i. This indicates that all organism may have had a common origin.
Which Physics and Biology topics come up? Why does the BMAT website not have explanations for past papers? We know the questions that students ask.
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Examples of reflex action include: Pulling the hand away from a hot object. The triceps has its points of origin on the scapula and humerus and is inserted on the ulna. If the mother is not affected then she must be a carrier. What do sports drinks contain and do?
They also act in a general way whereas nerves act in a precise area.
Consequently, organisms in certain regions became geographically isolated and did not have a chance to interbreed with other organisms in other regions. What are the kidneys composed of?
we suggest that you practise with past papers (without a calculator). Biology. The amount of subject matter covered by BMAT is less than you electrophiles: these accept a pair of electrons (and so form a bond to the donor atom). Working though past papers, under timed conditions, will help you get used.
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It is kept moist but not exposed to light. The peripheral nervous system is made up of nerves which link the CNS to the receptors and the effectors. Contraction of biceps muscles bends flexes the arm while contractions of triceps extends the arm. Hormones respond more slowly than the nervous system, but the effects are longer lasting.
The speed of transmission is very high.
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What is heterozygous?