Answer:
The correct answer is - option B. mitochondria have their own nucleus.
Explanation:
Endosymbiotic theory is a evolutionary theory which explains how eukaryotic cells evolved from prokaryotic organisms.
Evidences of endosymbiotic theory are:
1. Mitochondria and chloroplasts are double membrane bound cell organelles. The inner membrane probably evolved from the plasma membrane of engulfed bacterium and outer membrane from the plasma membrane or endoplasmic reticulum of the host cell.
2. Almost similar size of mitochondria and chloroplast and bacteria and their ribosomes.
3. Cristae of mitochondria resemble the folded membranes is groups of bacteria.
4. Mitochondrion and chloroplast both have circular DNA similar to those of bacterial DNA.
Answer:
A I'm pretty sure cause t hff sts really the only one that makes sense
Answer:
Chemical because of the fertilizer the farmer is using.
Explanation:
Answer:
Place the corpse in an environment where decomposition is slow (such as a swamp or bog).
Explanation:
If any living thing gets preserved or its trace remains after a long period of time then a fossil is said to be formed and the process by which it is formed is termed as fossilisation.
There are several factors which affects whether a particular component will get fossilised or not, some of them are :
1. Hardness of the material - the harder the substance the higher the chances of getting fossilized.
2. The environment - whether it causes decay or preservation.
3. Speed of burial - the faster the burial the higher the chances of fossilisation .
Therefore, keeping these factors in mind to increase the probabilty of fossilization the corpse should be placed in environemnt where there is slow decomposition and such environment is provided in places such as bogs or swamps.
1. Energy from the Sun ejects electrons from chlorophyll and splits water molecules to yield hydrogen ions.
Pigments inside the photosystems absorb light energy. Energy is transferred to reaction center, where electron is boosted at higher level. Electron is then passed to an acceptor molecule, replaced with an electron from H2O. and O2 is released.
2. Electrons move down the electron transport chain, releasing energy that pumps hydrogen ions into the thylakoid space
Electron releases energy because it goes from a higher to a lower energy level.
3. The concentration of hydrogen ions in the thylakoid space increase
Released energy of electrons drives pumping of hydrogen ions from the stroma into the thylakoid interior, building a proton gradient.
4. Hydrogen ions diffuse across the thylakoid membrane into the stroma through ATP synthase.
The only way for hydrogen ions to move down the gradient is through ATP synthase.
5. ATP synthase uses the energy released as hydrogen ions move from regions of high concentration to regions of low concentration to make ATP.
ATP synthase is an enzyme that use proton gradient to make ATP from ADP and Pi.
