AP Biology Practice Exam

AP Biology Practice Exam yes ️is testosterone lipid soluble testosterone ️readily passes through the cell membrane and binds to a receptor in the cytoplasm. the hormone and receptor then enter the nucleus and act as a transcription factot voltage-gated calcium channels in the membrane open ️what is a direct result of depolarizing presynaptic membrane of an axon oxygen gas ️in photosynthesis, atom goes from water to pump ️whenever this term is used, active transport occurs diffusion ️glucose crosses membranes by adrenal glands ️release cortisol genes ️all cells in your body contain the same the speed that it is degraded ️the amount of protein synthesized from mRNA depends on since they are triploid, they cannot generate gametes because homologous pairs cannot line up ️why are bananas triploid, seedless, and sterile acrosome reaction ️enables the sperm to penetrate the coat of the surrounding ovum cortical reaction ️ensures that a fertilization membrane forms and prevents another sperm from penetrating the egg true ️true or false, an antigen can have multiple epitopes barr body ️an inactivated x chromosome and results in females with half of their cells having one x inactivated and the other half of their cells having the other x inactivated hydrophillic, hydrophobic ️the heads of phospholipids are ____, while the tails are quorum sensing ️how bacterial cells communicate with each other autocrine signaling ️in animal cells, signals diffuse from one part of a cell to another part of the same cell synaptic signaling ️signals in the nervous system use neurotransmitters between cells paracrine signaling ️send a message to nearby cells by diffusion endocrine signals ️can travel anywhere in the blood to reach target cell ion channel receptors ️open and shut a channel or gate in a membrane allowing an influx of ions suc