in the 1600s, advances in microscopy led to the developm
vances in microscopy led to the development of cell theory) which of the following statements is part of the
ll theory?
a. all cells require water and oxygen to survive.
b. all living things are made of one or more cells.
c. all cells have organelles with specialized functions.
d. all living things rely on several different types of cells.
2. in order to function, all living things require which of the following?
a cells
b. nuclei
c. organs
d tissues
3.the 1830s theodor schwann showed that the mature tissues of animals were traceable to embryonic cells. which of the
wing statements of cell theory does this provide evidence for?
a) all living things are made from cells.
b. cells are the basic units of structure and function in an organism.
3. all cells come from preexisting cells.
d. each cell has a specific design and purpose.

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.

What is the name of the type of cell division that occurs in the prokaryotic cell cycle

What is the ratio of carbon hydrogen and oxygen in a carbohydrate?