Ocr Gcse Biology B4

receptor proteins – recognizes and binds to substances outside the cell
d) environmental conditions –
S-phase – Released E2F activates transcription of target genes to promote entry into what phase?
As a cell increases in size, which increases more rapidly, its surface area or its volume? 10.1 – Its volume
*pyruvic acid is broken down into carbon dioxide in a series of energy-extracting reactions 9.2 – Krebs Cycle
erythropoietin (EPO) – A hormone that stimulates the production of erythrocytes. It is secreted by the kidney when tissues of the body do not receive enough oxygen.
Thermophile – a group of archaea that can withstand extreme heat
The primary male sex organ(s) is(are) the
Stimuli – Living things respond to their environment
biogeochemical cycle – process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another
Specific heat – the amount of heat necessary to increase the temperature of a substance
Causation – A cause and effect relationship in which one variable controls the changes in another variable.
cytokinins – A class of plant hormones that retard aging and act in concert with auxin to stimulate cell division, influence the pathway of differentiation, and control apical dominance.
cochlear implants – bionic ear. 1)cochlear package and reciever simulator, 2) speech processor, 3) headset.
for totally deaf people.
very expensive and post operative side effects, quality of sound varies.
The primаry mаle sex оrgаn(s) is(are) the
prokaryotic cells – cells that lack internal membrane-bound organelles
anterior end – the end of an animal that contains its head
What is photosynthesis? – Plants making their own food and respiring. The chlorophyll inside the cells of plants absorbs light energy from the sun, which is used to rearrange the atoms of carbon dioxide and water in the chlorophyll to produce glucose. Oxygen is also produced as a waste product.
sensory input – The conduction of signals from sensory receptors to processing centers in the central nervous system.
chromatid – one of two identical strands into which a chromosome splits during mitosis

This entry was posted in Uncategorized. Bookmark the permalink.

Leave a Reply