Biology Answers

Calculate the size of an organism that occupies 26 um spaces under scanner, LPO and HPO using stage micrometer and ocular micrometer if the calibration factor is 0.65, 0.75 and 0.85

On your own: For further practice, click New sample. In this set, the contents of every tube is randomized. You may even find new substances you haven’t seen before. Record your observations and make hypotheses about the contents of each tube. Good luck!

  Below is the protocol to make 1 litre of 10x concentrate PBS.
Combine the following:
80g NaCl
2g KCl
14.4g Na2HPO4 (dibasic anhydrous)
2.4g KH2PO4 (monobasic anhydrous)
800mL distilled H2O
Adjust pH to 7.4 with HCl
Add H2O to 1L
Autoclave for 20 minutes on liquid cycle. Store at room temperature.
Which ions are being produced by this process, assuming that each of the chemical compounds dissociate into their constituent parts once they are dissolved in water?

The red sizing bead in this image is 10um in diameter. What is the length of a chloroplast?
a20um
b100um
c2um
d1um
e10um
Link to picture for question: https://ibb.co/9p39302

What is the correct events for secondary succession?

A living 120-pound woman contains about 6 x 10 grams of carbon-14. How many grams of carbon-14 would remain after 17100 years? What has happened to the rest of the carbon-14? (Assume carbon-14 is a beta emitter with a half-life of 5700 years.)

How do you work out the compound formula of NaC1, KCI, NaHPO, KHPO for molecular mass, mass of compound, molar concentration