What Do A Pine Tree, An Octopus, And A Bacterium Have In Common At The Microscopic Level?


What Do A Pine Tree An Octopus And A Bacterium Have In Common At The Microscopic Level??

What does a pine tree and octopus and a bacterium have in common at the microscopic level? … chloroplasts and mitochondria resemble bacteria.

What do a pine tree an octopus and a bacterium have in common at the cellular level?

They both are enclosed with a cell membrane filled with cytoplasm. In all the cells ribosomes are responsible for the protein synthesis. Both the cells have DNA as genetic material. The cells of pine tree and bacteria have cell wall whereas octopus lacks cell wall.

What three structures do all cells have?

A cell consists of three parts: the cell membrane the nucleus and between the two the cytoplasm.

Which component of the cell theory argues against life on earth involving from inorganic molecules?

Which component of the cell theory argues against life on Earth evolving from inorganic molecules? All organisms are made of one or more cells the cell is the fundamental unit of life and all cells come from preexisting cells.

What type of membrane proteins is involved in passing ions and polar molecules across membranes?

The types of membrane protein that is involved in passing ions and polar molecules across the membrane is a transport protein. There are two types of…

What is the main function of the bacterial cell wall quizlet?

What is the function of a bacterial cell wall? To provide bacteria with shape and protection against osmotic lysis and mechanical forces.

What is the theory of endosymbiosis based on?

The endosymbiotic theory is based on mitochondria and chloroplasts of eukaryotes. Both structures have characteristics (such as their own DNA and the ability to self-replicate) of independent prokaryotes. … Life forms are currently divided into three domains: Bacteria Archaea and Eukarya.

What do bacteria have in common with the cells of other living organisms?

Bacteria have cytoplasm and ribosomes which are common with the cells of other living organisms. … Some bacterias have whip-like which is flagellum which helps bacteria cells have prokaryotes which mean the DNA is not being held with the nucleus like cells of plants and animals.

What structures do all of these cells have in common?

All cells share four common components: (1) a plasma membrane an outer covering that separates the cell’s interior from its surrounding environment (2) cytoplasm consisting of a jelly-like region within the cell in which other cellular components are found (3) DNA the genetic material of the cell and (4) …

What characteristics do all cells have in common?

All cells share four common components: 1) a plasma membrane an outer covering that separates the cell’s interior from its surrounding environment 2) cytoplasm consisting of a jelly-like region within the cell in which other cellular components are found 3) DNA the genetic material of the cell and 4) ribosomes …

What would prevent bacteria from moving between intestinal cells?

The mucus layer is the very first line of physical defence that external molecules encounter when they arrive in the gut lumen and which prevents bacteria from directly contacting the epithelial cells [1].

Is cell wall a bacteria?

The bacterial cell wall is a complex mesh-like structure that in most bacteria is essential for maintenance of cell shape and structural integrity.

How does this algae disrupts the cell theory?

Acetabularia is a whole organism and it is larger than a cell. This disturbs the cell theory because it seems to break the rule that all organisms are made of cells by not itself being made of cells.

How do molecules pass through the cell membrane?

The simplest mechanism by which molecules can cross the plasma membrane is passive diffusion. During passive diffusion a molecule simply dissolves in the phospholipid bilayer diffuses across it and then dissolves in the aqueous solution at the other side of the membrane.

What kind of molecules can pass through the plasma membrane of the cells through simple diffusion?

Figure 3.1. 3 – Simple Diffusion Across the Cell (Plasma) Membrane: The structure of the lipid bilayer allows small uncharged substances such as oxygen and carbon dioxide and hydrophobic molecules such as lipids to pass through the cell membrane down their concentration gradient by simple diffusion.

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How do carbohydrates function in the cell membrane?

Membrane carbohydrates perform two main functions: participate in cell recognition and adhesion either cell-cell signaling or cell-pathogen interactions and they have a structural role as a physical barrier. … Carbohydrates of the plasma membrane are major recognition and attaching sites for pathogens during infection.

What is the function of cell wall in bacteria cell?

The cell wall has multiple functions during bacterial growth including maintaining bacterial cell integrity and shape as well as resisting internal turgor pressure. Furthermore it must remain flexible to accommodate the remodeling that is required for cell division and growth.

What does the cell walls of bacteria do?

The bacterial cell wall performs several functions as well in addition to providing overall strength to the cell. It also helps maintain the cell shape which is important for how the cell will grow reproduce obtain nutrients and move.

What are the functions of the cell wall to bacterial cell and give evidence of these functions?

Small molecules are able to freely pass through the cell wall to the membrane but large molecules are excluded. In this way the cell wall acts as a coarse filter. The primary function of the cell wall however is to maintain the cell shape and prevent bursting from osmotic pressure (called lysis).

What do mitochondria chloroplasts and bacteria have in common?

Mitochondria and chloroplasts have striking similarities to bacteria cells. They have their own DNA which is separate from the DNA found in the nucleus of the cell. And both organelles use their DNA to produce many proteins and enzymes required for their function.

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What are bacterial endosymbionts?

Introduction. Endosymbionts are organisms that form a symbiotic relationship with another cell or organism. … Bacteria called rhizobia colonize the root cells of plants forming nodules. Rhizobia bacteria convert atmospheric nitrogen into ammonia that the plant can use to build biological molecules.

What is the endosymbiosis theory quizlet?

The Endosymbiotic Theory. States that organelles such as chloroplasts and mitochondria were once free-living prokaryotes which eventually lived symbiotically within larger cells forming modern day eukaryotes.

What are bacteria cells?

Bacteria are single celled microbes. The cell structure is simpler than that of other organisms as there is no nucleus or membrane bound organelles. … There are approximately 10 times as many bacterial cells as human cells in the human body. A lot of these bacterial cells are found lining the digestive system.

What structures inside plant and animal cells look like bacteria?

The ribosome is the only common organelle of animal plant and bacterial cells.

How are bacterial cells different from plant and animal cells?

Bacteria are neither animals nor plants. … Because bacteria are prokaryotic they do not have a nucleus and no membrane-bound organelles. In contrast plants and animals are made up of eukaryotic cells which means they have a nucleus and membrane-bound organelles like mitochondria or golgi apparatus.

What are the 5 structures that all cells have in common?

Although cells are diverse all cells have certain parts in common. The parts include a plasma membrane cytoplasm ribosomes cytoskeleton and DNA.

Which characteristic do most plants have in common?

  • Plants are multicellular eukaryotes. They have organelles called chloroplasts and cell walls made of cellulose.
  • Plants also have specialized reproductive organs.
  • Almost all plants make food by photosynthesis.
  • Life as we know it would not be possible without plants.

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Which of these structures are found in both plant and animal cells?

Animal cells and plant cells share the common components of a nucleus cytoplasm mitochondria and a cell membrane.

What 3 things do all cells have in common quizlet?

all cells have a cell membrane DNA ribosomes and a cytoplasm.

What feature differentiates archaea and bacteria?

Similar to bacteria archaea do not have interior membranes but both have a cell wall and use flagella to swim. Archaea differ in the fact that their cell wall does not contain peptidoglycan and cell membrane uses ether linked lipids as opposed to ester linked lipids in bacteria.

What are three characteristics that are common to all types of cells?

Some organisms consist of only one cell while others (like humans) have trillions of cells!
  • The vast majority of cells share several characteristics: they are bound by a plasma membrane and contain cytoplasm DNA and ribosomes. …
  • Cells perform many functions from synthesizing proteins to passing on genetic material.

What is the greatest barrier that pathogens must overcome in order to cause disease in the GI tract?

The acid pH of the stomach and the digestive enzymes of the upper gastrointestinal tract create a substantial chemical barrier to infection.

Which of the following do plants use to transport nutrients between adjacent cells?


Plasmodesmata are numerous channels that pass between the cell walls of adjacent plant cells connecting their cytoplasm and enabling signal molecules and nutrients to be transported from cell to cell (Figure 3.20 a).

Why do some cells need a flagella?

Functions Other Than Locomotion

In addition to helping a cell move flagella can serve as sensory organelles. Because they’re surrounded by an extension of the cell membrane they can detect temperature differences as well as chemicals outside the cell.

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