bio

What structure runs from Z line to Z line? Sarcomere The movement of the troponin-tropomyosin complex requires _______ Ca2+. The actin filament is a polymer formed from 300 to 400 globular subunits called ______ Gactin. A myofilament is the _________. Protein strand composed of actin or myosin T tubules ________. Conduct action potentials deep into the muscle cell A drug that interferes with the active transport of calcium ions from the sarcoplasm back into the sarcoplasmic reticulum would...

The upper motor neurons are axons that carry action potentials from the upper brain (cerebrum) to the brainstem or spinal cord A reflex is an automatic response to a stimulus produced by a reflex arc The lower motor neurons have cell bodies in the anterior horns of the spinal cord and in the brainstem These are all properties of reflexes except __________. A) reflex responses are very predictable. B) reflexes are responses to sensory inputs. C) reflexes are quick responses of the nervous...

Captain Jack Sparrow is in a sword fight with an evil skeleton pirate. If Jack were to cut off the skeleton's head, his sword would be following which body plane: transverse Which of these statements about positive feedback is the MOST correct? Birth is an example of a normally occurring positive feedback mechanism. Which of the following is NOT an example of a negative feedback loop? During pregnancy, uterine stretching stimulates uterine muscle contraction. Which of these statements con...

epi upon or above iso equal macro large sub below/under ab away from ad toward or adjacent to arthr joint carcin cancercardio heart cephal head cerebro brain chondro cartilage derm skin hepat liver hist tissue hyper in excesshypo below normal/under myo muscle nephro kidney oculo eye

Which ion has greatest influence on resting membrane potential? Potassium (potassium has more leak channels on the membrane than sodium, which is why potassium has a higher permeability value and has more impact of resting membrane potential) Concerning resting membrane potential, the inside of the membrane is _______ compared to the ________ charged outside. negative, positively. T or F: The diffusion of K+ and Na+ down their chemical gradients contributes to the resting membrane potenti...

metric scale for length (m): nm, um, mm, cm, dm, m, Dm, Hm, Km *opposite when converting* metric scale for volume (L): nL, uL, mL, cL, dL, L, DL, HL, KL *opposite when converting* metric scale for mass (g): ng, ug, mg, cg, dg, g, Dg, Hg, Kg *opposite when converting* standard metric scale K, H, D, gram liter meter, d, c, m, _____, _____, u, _____, _____, n *normal when converting* what is used to measure length ruler measure beyond graduated measurements ex: 9.6 = 9.59

Mitosis division of a cell nucleus in which the chromosomes number stays the same Mitosis purpose increase cell number during growth, development and repair Cytokinesis division of cytoplasm sister chromatids duplicates of an original chromosome centromere region whats holding chromatids together spindle football shaped structure composed of microtubules. involved in moving chromosomes during cell division centrioles form the poles in animal cellsasters made of short microtubules that rad...

Benedicts Reagent to test for a reducing sugar Iodine Reagent to test for a starch Biuret Reagent to test for a protein Positive Test changes colors (benedicts) or turns blue-black (iodine) Negative Test stays the same color (benedicts) or turns amber (iodine) Negative for Benedicts water, potato, starch Positive for Benedicts soda, onion, milk, glucose Negative for Iodine water, glucosePositive for Iodine cornstarch Negative for Biuret water, starch Positive for Biuret albumin (protein...

Cytology the study of cells Robert Hooke - observed cork could float - discovered a honeycomb-like structure in a cork slice using a primitive compound microscope - only saw cell walls as this was dead tissue - coined the term "cell" for these individual compartments he saw Two types of microscopes: 1. Light Microscope 2. Electron Microscope Light Microscope - light is focused on specimen by a glass condenser lens - the image is magnified by an objective lens and an ocular lens - proj...

all organisms are made of cells and come from cells Cell theory When the cell size (INCREASES or DECREASES), the membrane gets smaller compared to cell volume. increases the study of cells Cytology "how can cork float" Took sections, looked under microscope and found that they had tiny chambers (aka cells) Robert Hooke Part of electromagnetic spectrum via sun, delivering energy that can be recorded as wavelengths (convert into color - ROY G BIV: red, orange, yellow, green, blue, indig...