BIOLOGY HIGH SCHOOL

Which is a part of the cell theory?A)cells come from pre-existing cells
B)cells have a nucleus
C)organisms with one cell must be seen with a microscope
D)organisms must have more than one cell to live

Answers

Answer 1
Answer: A, I am pretty sure :) 
Answer 2
Answer:

Answer: A) cells come from pre-existing cells

Explanation:

Related Questions

How do lines of latitude and longitude help people to locate places on Earth?
Lignina. is needed directly for photosynthesis. b. is a red pigment. c. provides structural support and waterproofing to plants. d. is the female reproductive cell in seed plants
If a cell with 28 chromosomes undergoes mitosis how many chromosomes will each of daughter cells have ?
Describe how ecologists use the technique of sampling to estimate population size?
When is now-casting used?15 days from nowSevere Weather EventsClear Sky DaysSunny Days

The cells of human body display variations in shape and size. Explain.

Answers

Answer:

Shape and size vary from cell to cell according to their functions and composition. For example, a nerve cell is long and branched, meant for the transmission of signals throughout our body while a muscle cell is small and spindle-shaped which helps in movement.

Explanation:

What are the 2 major divisions in cell cycle?

Answers

Interphase and Mitosis. Interphase is where the growth of the cell occurs, and it also tends to get various nutrients that it needs for growing. Mitosis is happens once the cell splits into two, and so on once the duplicated cells start to perform interphase once again.distinct cells, often called "daughter cells".
Interphase is one of the two major divisions and in this phase the cell grows, accumulating nutrients needed for mitosis and duplicating its DNA. The second phase is mitosis, during which the cell splits itself into two distinct cells, often called "daughter cells".

71. After Precambrian Time, the basic divisions of the geologic time scale, from larger to smaller, are

Answers

The answer is eons, eras, and periods.

A period is a basic unit in geology. Two or more periods form an era. Two or more eras form an eon. For example, Phanerozoic is the eon. It consists of three eras. These eras are Paleozoic, Mesozoic, and Cenozoic. Paleozoic is the era that consists of five periods. These periods are Cambrian, Ordovician, Silurian, Devonian, and Permian.

In mammals, air enters lungs through tubes called _____, which branch into smaller tubules called _____, which extend out to tiny air sacs called _____.

Answers

 In mammals, air enters lungs through tubes called _____, which branch into smaller tubules called _____, which extend out to tiny air sacs called _____. 
trachea; bronchioles; spongy tissue 
>> bronchi; bronchioles; alveoli 
bronchi; alveoli; gills 

Answer:

In mammals, air enters lungs through tubes called  bronchi, which branch into smaller tubules called  bronchioles, which extend out to tiny air sacs called alveoli.

Which environmental lesson can you derive from the ecocide hypothesis for what happened to Easter Island?

Answers

An environmental lesson which tells that the climate change has environmental consequences for all inhabitants of an environment derives you from the ecocide hypothesis for what happened to Easter Island. Easter Island is an island in Chile and is famed with its archeological sites. 

Answer : Changes in climatic conditions has consequences on all the organisms of environment.

Explanation : From the ecocide hypothesis according to the changes that occurred in Easter Island has drastic environmental effects on the nature. The changes in the climatic conditions lead to many undesired natural disasters. The organisms in environment are directly or indirectly dependent on nature for their living. So, any changes in the environment will lead to harm the life on earth.

Bacteria come in assorted colors due to

Answers

Answer:

Different pigments.

Explanation:

Bacteria are the prokaryotic organisms that lacks the well developed nucleus. The endomembrane system is absent in bacteria and less cell organelle is present as compared with eukaryotic organism.

The bacteria are of different shape, size and colors. The colors of bacteria depend upon the type of pigment present in their body and the different wavelength of lights are absorbed by them. Pseudomonas contains the green color pigment pyoverdin and a blue pigment pyocyanin.

Thus, the answer is different pigments.
Bacteria come in assorted colors due to photosynthetic pigments.
Other Questions
Why did Gregor Mendel choose to use purebred plants in his experiments?
A solution with a pH of 7.0 isA. acidic.B. neutral.C. weakly basic.D. strongly basic.
Given two areas with equal sunlight and available water. Area I has a high amount of atmospheric carbon dioxide while Area II has a low amount of atmospheric carbon dioxide. How does the rate of photosynthesis in Area I compare to that in Area II?A) Atmospheric carbon dioxide has no affect on the rate of photosynthesis.  B) The rate of photosynthesis increases with a decrease in carbon dioxide.  C) The rate of photosynthesis increases with an increase in carbon dioixde.  D) The level of carbon dioxide increases with the level of available oxygen.
Subduction zones are found under which kind of plate?