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ZanzabumX [31]
3 years ago
9

The endosymbiotic theory states that chloroplasts and mitochondria evolved as a result of

Biology
2 answers:
Sidana [21]3 years ago
8 0

a prokaryotic cell engulfing a bacterial cell.

blsea [12.9K]3 years ago
6 0
A Eukaryotic cell engulfing a bacterial cell.

You may want to know that the bacteria which used to photosynthesise , after they have been engulfed by an eukaryotic cell , they evolved into Chloroplasts .
However for the bacteria which used to respire , they have evolved into mitochondria.

Hope this helps :) Good Luck !
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The ___________ propel debris-laden mucus away from lower respiratory system structures.
Aliun [14]

The cilia propel debris-laden mucus away from lower respiratory system structures.

<h3>What is function of mucous membrane?</h3>
  • Another general defense against possible infections is provided by the mucous membranes that line the digestive, urinary, and respiratory tracts, as well as the nose, mouth, and lungs.
  • In order to cover and protect the more delicate cell layers underneath it and to trap waste and particle matter, including microorganisms, mucous membranes are made up of a layer of epithelial cells connected by tight junctions.
  • Because they feature ciliated appendages, which resemble hairs, the epithelial cells lining the upper portions of the respiratory tract are known as ciliated epithelial cells.
  • Mucus that contains debris is forced out and away from the lungs by the cilia's movement. The mucus is then coughed up, sneezed out, or swallowed and destroyed in the stomach. The mucociliary escalator is another name for this route of elimination.

Learn more about the Mucous membrane with the help of the given link:

brainly.com/question/25968581

#SPJ4

8 0
2 years ago
Steroids differ structurally from triglycerides and phospholipids, although they are all classified as lipids. What characterist
Yakvenalex [24]

Answer:

Lipids are hydrocarbon molecules that make up the structure of living beings. Few examples are <u>fats, oils and waxes</u>. Steroids are also a class of lipids but they are not structurally related to other lipids but do share some common properties with them. They are <em>insoluble in water and are hydrophobic</em>( water-repelling).

Explanation:

Lipids are insoluble in water as they are <em>non-polar</em> but soluble in non polar solvents (<em>chloroform</em>). Fat soluble vitamins like <u>A,D,E,K and steroids</u> have a different structure composed of fused four rings.

The most common example of steroid is cholesterol. Cholesterol acts as a precursor for many hormones and other signalling molecules.

7 0
3 years ago
Read 2 more answers
PLEASE HELP
Sergeu [11.5K]

Answer:

The First Quarter Moon is a primary Moon phase when half of the Moon's face is lit up. Whether it is the left or right half depends on where you are on Earth.

3 0
2 years ago
Read 2 more answers
1.What is unique about the reflex behavior?
Allisa [31]
Q1. It originates in the spinal cord, not the brain
Q2. The environment and sensory receptors
Q3.Breathing during sleep
Q4. Reacts to a threat; Calms you down
Q5. Somatic nervous system
8 0
2 years ago
Each of the following can kill pathogens in the body, except:
Studentka2010 [4]

Answer:

A. Vaccines

Explanation:

These are meant to prepare the body for the possibility of infection by building up immunity.

Have a great day!

6 0
3 years ago
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