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sergij07 [2.7K]
3 years ago
10

What is the purpose of the nucleus?

Biology
1 answer:
Harlamova29_29 [7]3 years ago
3 0
Last one is correct.


Prokaryotic cells do not contain a nucleus, while eukaryotic cells do
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What species consists of four blood types: A, B, AB, & O?
Novosadov [1.4K]

i would have to say D human as its the most common ive herd of for the human race

hope this helps

6 0
4 years ago
Examine the mechanism of carbonic anhydrase. If the Zn2 were removed from the active site, and replaced with either Cu , Cd2 , o
Shkiper50 [21]

Answer: No

Explanation:

Carbonic anhydrase (CA; carbonate hydro-lyase) is a zinc-containing enzyme that catalyzes the reversible hydration of carbon dioxide: CO2+ H2O<-->HCO3(-)+H+. The enzyme is the target for drugs, such as acetazolamide, methazolamide, and dichlorphenamide, for the treatment of glaucoma.

The zinc ion is located in a cone-shaped cavity and coordinated to three histidyl residues and a solvent molecule. Inhibitors bind at or near the metal center guided by a hydrogen-bonded system comprising Glu-106 and Thr-199. The catalytic mechanism of CA II has been studied in particular detail. It involves an attack of zinc-bound OH- on a CO2 molecule loosely bound in a hydrophobic pocket. The resulting zinc-coordinated HCO3- ion is displaced from the metal ion by H2O. The rate-limiting step is an intramolecular proton transfer from the zinc-bound water molecule to His-64, which serves as a proton shuttle between the metal center and buffer molecules in the reaction medium.

8 0
3 years ago
The reproductive handicap for sexual reproduction refers to _____.
zepelin [54]

Answer:

The "reproductive handicap" in sexual reproduction can refers to that only half of the offspring will be female.  

It means that a female undergoing asexual reproduction will have offspring with 100% of her DNA, while a female with sexual reproduction usually only transfers 50% of her genetic material to her offspring.

6 0
3 years ago
Imagine a new type of cell was discovered on Mars in an organism growing in benzene, a nonpolar liquid. The cell had a lipid bil
snow_lady [41]

Answer:

Part a : c is true, part b: c is correct

Explanation:

Since this new cell can grow in a non polar liquid, that mean that need to be surround with this kind of molecules, and inside will be similar because if not the water will never get out from the cell.

The phospholipid will form a lipid bilayer and since the external and the inner structure is a non polar environment, the bonding among the lipids will be covalent nature so it can flow in a non polar surrounding.

4 0
3 years ago
A student is studying insulation used to keep houses warm. The student builds 10 model houses and uses a different thickness of
Ksju [112]
I would say c as the answer
8 0
2 years ago
Read 2 more answers
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