Bfhs Biology Chapter 7

Magnification – magnification = (size of image) / (size of specimen)
Heterotrophs – organisms that obtain food by consuming other living things. (ex. everything but plants)
limbic system – A functional unit of several integrating and relay centers located deep in the human forebrain; interacts with the cerebral cortex in creating emotions and storing memories.
Who discovered the first antibiotic and what was it – Alexander Fleming – penicillin
As a cell increases in size, which increases more rapidly, its surface area or its volume? 10.1 – Its volume
Word Roots: photo- – = light (photosystem: cluster of pigment molecules)
Lipids – any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.
Describe Cell Theory – a.All living things are composed of cells
b.Cells can only develop from pre-existing cells
c.Cells are the smallest unit of life
d.Cells carry their genetic information in the form of DNA
How do environmental factors affect characteristics? – A poor diet can have negative effects on you- it can lead to obesity and other diseases (heart disease etc.). You can lower this risk by changing lifestyle- more exercise, better diet.
reaction center – The location of the first light driven chemical reaction of photosynthesis.
The suffix -clasis is defined as a
Reproduction – the production of offspring
messenger RNA (mRNA) – Carries genetic message from the DNA to he protein-synthesizing machinery of the cell.
When using the low power objective, use the _______ adjustment knob. – Coarse
ATP synthase – A cluster of several membrane proteins that function in chemiosmosis with adjacent electron transport chains, using the energy of a hydrogen ion concentration gradient to make ATP.
abiotic – any non-living part of the environment that affect living organisms
The suffix -clаsis is defined аs а
Cytosol – The fluid portion of the cytoplasm in both prokaryotic and eukaryotic cells, which contains water, salts, and an assortment of organic molecules, including proteins, lipids, carbohydrates, sugars, amino acids, and nucleotides.

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