What is a tough and rigid layer that surrounds plant cells as well as some algal bacterial cells

Which is not an example of a lipid? A) phenol B) triacylglycerol C) cholesterol D) wax

Based on the graph, at what span of time was the birthrate higher than the death rate? A. From year 5 to year 7 B. From year 6 to year 10 c. From year 1 to year 6 D. From year 6 to year 8

Explain the two main functions of the cell membrane in the cell

An object has a mass of 5.52 g and a volume of 12 mL. What is the density of the object? 0.18 g/mL 0.24 g/mL 0.46 g/mL 0.62 g/mL

Name one advantage of electron microscopes.

Living animal cells, each with a salt concentration of 1%, are placed in a solution of 30% salt. Which of the following will occur? A.

The duck-billed platypus has 52 chromosomes in its body cells. When the platypus's body cells divide by mitosis, how many chromosomes will each daughter cell have?

What is a prokaryotes in biolog

Which of the following does not represent conditions believed by scientists to have been present on early Earth? A. An atmosphere thick with water vapor B. energy in the form of ultraviolet radiation C. extremely cold temperatures D.

What would happen if a cell stopped functioning correctly?