Bisv Ib Biology Topic 7 Nucleic Acids And Proteins

Conclusion – The logical interpretation of the results of a test or experiment – In science, it expresses either support or rejection of the hypothesis.
Precipitation – Water such as rain, snow, sleet, hail and dew.
Crossing over – Exchange of genetic material between non-sister chromatids from homologous chromosomes during prophase I of meiosis; results in new allele combinations.
preditaiton – the act of one organism pursuing and consuming another organism for food
cell membrane – outermost boundary of a cell
epiphysis – The rounded end of a long bone, which contains the joint structure used to attach it to another bone.
The tunica adventitia – strong outer layer of an artery or a vein
made of connective tissues
allows vessels to stretch
growth factors – broad group of proteins that stimulate cell division
Glycosidic linkage – In carbohydrates, monosaccharides are joined together in a covalent bond called __________ _______.
Which causes a yellowish pigment in skin?
collenchyma – thick walled cells that support the vein running through a leaf
-not found near the end of a leaf
Reaction-center complex – A complex of proteins associated with a special pair of chlorophyll a molecules and a primary electron acceptor. Located centrally in a photosystem, this complex triggers the light reactions of photosynthesis. Excited by light energy, the pair of chlorophylls donates an electron to the primary electron acceptor, which passes an electron to an electron transport chain.
control group – part of an experiment that is not changed so that it can be compared to the experimental group
Ribosome – the site of protein synthesis
Biotic – A term that describes a living or onceā€living organism in an ecosystem.
Which cаuses а yellоwish pigment in skin?
theory – A hypothesis that has been supported by a significant amount of data
Competition – The struggle between two or more individuals for the same limited resource or resources. Can occur within a population or between two or more different populations.
concentration gradient – A region which the density of a chemical substance increases or decreases. Cells often maintain concentration gradients of ions across their membranes. When a gradient exists, substances tend to move from where they are more concentrated to where they are less concentrated.

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