AQA GCSE BIOLOGY 1 Updated Exam

DRUG - Correct Answer-changes the chemical process in our body making us addicted. STATIN - Correct Answer-decreases cholesterol by preventing the livers from producing too much. WHICH IS GOOD AND BAD, HDL OR LDL ? - Correct Answer-HDL-good LDL-bad. MEDICINAL DRUGS - Correct Answer-aspirin,insulin and penicillin. RECREATIONAL DRUGS - Correct Answer-caffeine ,nicotine and alcohol DEPRESSANT DRUG - Correct Answer-alcohol STIMULANT DRUGS - Correct Answer-cocaine, ecstasy and caffeine STEROID - Correct Answer-synthetic testosterone, increases muscle mass BETA BLOCKERS - Correct Answer-increase focus EPO - Correct Answer-increase red blood cells which increases oxygen which increases stamina NERVOUS SYSTEM - Correct Answer-allows us to react to our surroundings and coordinate our behavior quickly. CENTRAL NERVOUS SYSTEM (CNS) - Correct Answer-made up of the brain and spinal chord SYNAPSE - Correct Answer-the gap between the neurons REFLEX ACTION IS MADE OF.. - Correct Answer-stimuli to receptor to sensory neuron to relay neuron to motor neuron to effect then response STIMULI - Correct Answer-light, sound, taste, smell, temperature, touch, pain RECEPTOR - Correct Answer-eyes, ears, tongue, nose, skin INSIDE THE PRE-SYNAPTIC NEURON - Correct Answer-there are chemicals called neurotransmitters WHAT HAPPENS IN THE SYNAPSE - Correct Answer-when electrical impulse arrive in the PSN the neurotransmitters are released into the synapse and then diffuse into the post-synaptic neuron. WHAT HAPPENS IN THE POST-SYNAPTIC NEURON - Correct Answer-the neurotransmitters attach to receptors and start a new electrical impulse. REFLEX ACTION - Correct Answer-unconscious action which happens automatically and only goes to the spinal chord. HORMONES - Correct Answer-chemical messengers produced by embrine glands and travels in our blood WHAT DO HORMONES DO - Correct Answer-they control things in the organs and cells that need constant adjustment. OESTROGEN - Correct Answer-made in the ovaries, main female sex hormone, controls menstrual cycle, builds uterus lining and promotes female secondary characteristics. PROGESTERONE - Correct Answer-made in the ovaries supports pregnancy maintains uterus lining THYROID - Correct Answer-regulates rate of metabolism excess causes hyperactivity deficiency: causes weight gain ADRENALINE - Correct Answer-made in the adrenal glands, readies the body for a 'flight or light' response. increases heart rate TESTOSTERONE - Correct Answer-made in the testes, main male sex hormone. promotes secondary male sexual characteristics. ANTIDIURELIC HORMONES - Correct Answer-controls absorption of water into the blood by kidneys HOMEOSTASIS - Correct Answer-where your internal environment is kept constant TYPES OF HOMEOSTASIS - Correct Answer-thermoregulation, glucoregulation, osmoregulation PLANT SENSITIVITY HORMONES - Correct Answer-light water gravity touch AUXIN - Correct Answer-plant hormone that allows the plant to grow upwards toward light. EUTROPHICATION - Correct Answer-high nitrate and phosphate levels cause excessive plant and algae growth. results in the loss of oxygen and the biological death of a lake. LIGHT SENSITIVITY - Correct Answer-phototropism GRAVITY SENSITIVITY - Correct Answer-gravitropism METABOLIC RATE - Correct Answer-rate at which the body carries out chemical reactions DYNAMIC EQUILIBRIUM - Correct Answer-moving or doing something equally DIFFUSION - Correct Answer-when molecules move from a high concentrated area to a low concentrated area till it meets its equilibrium NET MOVEMENT - Correct Answer-overall movement IN EQUAL CONCENTRATION THERE IS NO - Correct Answer-net movement FACTORS THAT SPEED DIFFUSION - Correct Answer-rise in temperature, steeper concentration gradient, large surface area and a smaller diffusion distance PLANT CELLS - Correct Answer-palisade and rood hair PLANT TISSUES - Correct Answer-mesophyll and epidermal PLANT ORGANS - Correct Answer-plant, root, stem and leaf