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aliina [53]
3 years ago
14

The majority of functions within a cell are carried out by

Biology
1 answer:
Sunny_sXe [5.5K]3 years ago
7 0
Oranelles carry out specific functions within the cell
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An example of the negative impact humans could have on an ocean ecosystem would be
siniylev [52]

The negative impact humans could have on an ocean ecosystem is pollution, which can lead to a mass extinction on the wildlife.

8 0
3 years ago
What makes water a polar molecule?
masha68 [24]

Answer:

It contains partial positive and negative charges.

Explanation:

A hydrogen bond is a non-covalent bond between a partial negative charge and a partial positive charge. Hydrogen bonds tend to be weak. Hydrogen bonds tend to be transient.

4 0
2 years ago
What is cyclin dependent kinase?​
Bezzdna [24]

Answer:

please mark as brainliest answer as it will also give you 3 points

Explanation:

Cyclin-dependent kinases (CDKs) are the families of protein kinases first discovered for their role in regulating the cell cycle. They are also involved in regulating transcription, mRNA processing, and the differentiation of nerve cells.[1] They are present in all known eukaryotes, and their regulatory function in the cell cycle has been evolutionarily conserved. In fact, yeast cells can proliferate normally when their CDK gene has been replaced with the homologous human gene.[1][2] CDKs are relatively small proteins, with molecular weights ranging from 34 to 40 kDa, and contain little more than the kinase domain.[1] By definition, a CDK binds a regulatory protein called a cyclin. Without cyclin, CDK has little kinase activity; only the cyclin-CDK complex is an active kinase but its activity can be typically further modulated by phosphorylation and other binding proteins, like p27. CDKs phosphorylate their substrates on serines and threonines, so they are serine-threonine kinases.[1] The consensus sequence for the phosphorylation site in the amino acid sequence of a CDK substrate is [S/T*]PX[K/R], where S/T* is the phosphorylated serine or threonine, P is proline, X is any amino acid, K is lysine, and R is arginine.[1]

7 0
3 years ago
Mycoplasmas differ from other bacteria in that they Group of answer choices Lack a cell wall. Are acid-fast. Are motile. Are gra
ser-zykov [4K]

Mycoplasmas differ from other bacteria in that they Lack a cell wall.

Mycoplasmas are different from bacteria as it can cause a wide range of infections and diseases. Mycoplasmas are phenotypically distinguished from other bacteria by their small size and complete absence of a cell wall. Lack of cell wall can be used to separate the mycoplasms from bacteria. It is a genus of bacteria that, like other members of the class Mollicutes, lack a cell wall around their cell membranes. Peptidoglycan is absent. This property makes them naturally resistant to antibiotics that target cell wall synthesis. They can be parasitic or saprotrophic

Learn more about Mycoplasmas on:

brainly.com/question/14599784

#SPJ4

4 0
2 years ago
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