Question

1. in a hypotonic solution, water will move _ the cell, causing the cell to _. *

a. into; shrivel
b. out of; shrivel
c. out of; swell or lyse
d. into; swell or lyse

1. using microscopes, he constructed in the 1600s, anton van leeuwenhoek *

discovered a new microscopic world. his discoveries paved the way for the
development of the microscopes used today and for many important biological
breakthroughs. which statement best describes van leeuwenhoeks work?
a. his observations alone provided enough information to form modern biological
theories.
b. the microscopes he made were used by all scientists and have remained
unchanged for over the years.
c. knowledge gained by his work has led to the improvement and development of
modern scientific concepts.
d. explanations of the microscopic world today are solely based on his observations
and conclusions.

Explanation:

Question 8

In a hypotonic solution, the solute concentration outside the cell is lower than inside. Water moves from an area of higher water concentration (hypotonic solution) to an area of lower water concentration (inside the cell) by osmosis. When water moves into the cell, it causes the cell to swell. In animal cells, if too much water enters, the cell can lyse (burst).

Anton van Leeuwenhoek's work was a starting point. His observations were important, but modern biological theories are based on a cumulative body of knowledge from many scientists over time (so a is wrong). The microscopes he made were not used by all scientists unchanged (b is wrong as technology has advanced). His work was a foundation, and knowledge from it contributed to the improvement and development of modern scientific concepts. Explanations of the microscopic world today are not solely based on his work (d is wrong as there have been many advancements and additional research).

Answer:

d. into; swell or lyse

Question 4