X Beatcer
It was found that after 20 minutes, visking tubing X felt hard and the
(b) Identify which liquid is hypotonie to the liquid in the beake
in it had increased. Visking tubing Y was soft and contained less liquid
figure
(a) Explain the observations made in visking tubing X and Y.
(ii) Use (b) above to explain the meaning of hypotonic and hy
11. Four equal strips A, B, C and D were cut from a potato whose cell sa
28.5% sugar. The strips were placed in sugar solutions of differe
follows: A - 10%, B-15%, C - 25% and D - 35%.
(i) What changes would you expect in strips A and D?
(ii) Account for the changes in A and D above.
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Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

Which blood cell spend most of their time in the lymphatic system?