Ib Biology Hl : Definition

What do the functional groups do? – The functional groups modify the molecule that they are attached to. The hydroxyl group makes the molecule its attached to hydrophilic or polar.
homeostasis – maintaining the status quo
endocrine system – The system of glands that produce endocrine secretions that help to control bodily metabolic activity.
Community – the living interacting populations found in one specific area
homologous chromosomes – A pair of the same type of chromosome (one from mom, one from dad); they line up together during meiosis
Anticodon – group of three bases on a tRNA molecule that are complementary to an mRNA codon.
Which are NOT considered to be the CNS (central nervous system)
placenta – An organ that connects the embryo to the uterine wall of the mother, and provides nutrients to the embryo.
Ectoparasite – any external parasitic organism (as fleas)
What is the order of the reflex arc? – Stimulus – Receptor – Sensory neurone – Central nervous system – Motor neurone – Effector – Response
Cilia – Short, numerous, hair like projections composed of pairs of microtubules; frequently aid in locomotion.
Enzymes are usually – very specific to certain reactions.
NADPH, ATP, and oxygen – The products of the light reactions
Adenosine Diphosphate is a chemical that plays an important role in energy transfer – ADP
Which аre NOT cоnsidered tо be the CNS (centrаl nervоus system)
Without this process we would ultimately have no food to eat or oxygen to breathe – Photosynthesis
Echinodermata – Phylum including the sea stars, sea cucumbers, sea urchins, and sea lilies; first animals to have an endoskeleton

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