During what phases of mitosis does a chromosome consist of two chromatids

Which statement best defines a cell? a crystal-like structure that exists in all living things an independent functional unit of life the smallest organelle of all living organisms the basic unit of structure and function in all living things

You lift a box with a force of 60 N up to a table that is 0.8 m high. How much work (Joules) did you do

What is required for asexual reproduction to occur?

A pure line of guinea pigs with genotype a/a; b/b is crossed to a pure line with genotype a/a; b/b. the f1 male and female guinea pigs are crossed to each other to generate the f2.

When should a bar graph be used

The definition of a hero is a. universally understood. b. determined by personal and cultural factors. c. clearly defined by a set of established traits. d. static and impartial.

Hydrogen ion concentration in vinegar

Why does it matter from which organ or tissue type the cancer developed

The nerve cells in the human nervous system seldom undergo mitosis. Based on this information, explain why complete recovery from injuries to the nervous system usually doesn't occur.

A protein was purified to homo - geneity. Determination of the mass by gel-filtration chro - matography yields 60 kDa. Chromatography in the pres - ence of 6 M urea yields a 30-kDa species.