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Ivan
3 years ago
9

It is thought that organelles of eukaryotic organisms, such as mitochondria and chloroplasts (in plant cells) came from

Biology
2 answers:
asambeis [7]3 years ago
8 0

Answer:

hello! its prokaryotic!

Explanation:

Rzqust [24]3 years ago
8 0

Answer:The answer is C. Prokaryotes

a . protists.

b . mutations.

c . prokaryotes.

d . random events.

PLZ Mark me BRAINIEST!!

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Which of the following does not cycle quickly?
Scorpion4ik [409]

Answer:

Is there and multiple choice options?

Explanation:

8 0
3 years ago
As described in "A Note About Bacterial Reproduction -- and the "Culture Bias,"" the organism Epulopiscium does not divide by bi
gayaneshka [121]

In liquid media or broth difference between dry and wet will give biomass of the Epulopiscium.

Explanation:

Biomass of bacteria can be measured by dry or wet mass. Bacteria numbers can be counted by spread plate method under the microscope.

In solid media the colonies obtained are diluted and number of cells will be seen by plate count method or on automated cell counter. The number would help calculate biomass

The biomass will be calculated by measuring wet and dry mass. Equipments required will be:

hydraulic gravity convection oven and centrifugation set up.

A cellulose acetate filter membrane is used which is 47 mm in diameter and 0.45 micron of pore size.

The cells  grown settles down due to gravity. They are stirred to evenly spread in the broth and is kept in centrifuge.

The cells obtained after centrifugation will be taken and wet weight is obtained.

To obtain dry weight the cells are placed in oven for 6 hours to 24 hours. The resultant cells are weighed and dry weight obtained.

Biomass will be calculated by subtracting the wet mass to dry mass. This way biomass is obtained in epulopisicuium. Here the cells will be of different size so on centrifugation 2 or more phases of cells can be seen due to gravity change.

8 0
3 years ago
Why is it called "hamburger" if there's no ham?​
prisoha [69]

Answer:

Good question! Hamburgers actually get their name from Hamburg, Germany, home of a cut of beef called the Hamburg steak that eventually evolved into what we now consider hamburgers

8 0
3 years ago
Read 2 more answers
Metabolic pathways can be controlled through the availability of enzymes and modulation of their catalytic activities. Enzyme av
postnew [5]

Answer: a) substrate and cofactors b) covalent modification

Explanation:

Metabolic pathways involve all the chemical processes takes place in the enviornment or in an organisms.The metabolic pathways are controlled through the catalytic activities of enzymes.

The availability of enzyme is regulated  by substrate and cofactors present in enzyme and enzyme activity is commonly regulated via covalent modification.

Enzymes are highly selective in nature and bind to a specific substarte only. The active site in enzyme binds with the substrate to form enzyme substrate complex. Coactors assist the enzyme activity, without cofactor enzyme can not perform its activity.

Hence enzyme availibility is regulated by  substrate and cofactors regulates.

Covalent modifications regulates activity of enzyme as it involves addition and removal of chemical group to synthesis required protein. It can change the chemical properties of the site by targeting one or multiple amino acid.

Thus the correct answer is a) substrate and cofactors b) covalent modification

8 0
3 years ago
What are the ten biomes, and what appears to be the most prominent biome in North America, South America, Asia, Africa, Australi
Dima020 [189]
Well, the ten biomes are:
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