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Alecsey [184]
2 years ago
13

Overall, the nucleus of an atom has a(n) _______ charge.need this answered by today pls ‼️​

Biology
2 answers:
mezya [45]2 years ago
8 0
Positive charge, the nucleus has protons and neutrons. Neutrons have a neutral(0)charge, and protons have a positive charge of +1.602*10^-19
natali 33 [55]2 years ago
3 0
The charge by the nucleus of a atom has a negative charge.
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Answer: D. It yields chromosomes that contain both maternal and paternal DNA.

Explanation:

The recombination or crossing over is a genetic process. It takes place during the Prophase I of meiosis. The homologous pair align and held together by synapsis. This results in the mixture of genes combination formed from both parents that can be represented as a single chromosome.

If the recombination do not occur then each chromosome will be either 100% maternal or paternal. Thus recombination assures the recombinant chromosomes which consists of genetic material from both parents. Thus the genetic diversity of offspring increases.

6 0
3 years ago
Choose the answer that is not a fossil.
alekssr [168]

Answer:

The last one: dinosaur footprints preserved in mud turned to rock

Fossils have to be physical remains of an animal.

Hope this helps!

7 0
3 years ago
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According to the Endosymbiotic Theory, infoldings in the cell membrane of an ancestral prokaryotic cell gave rise to endomembran
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Explanation:

<u>False:</u> C) The ER provides separate microenvironments for each of the modifications that must take place to proteins.

The golgi apparatus comprised of several components called cisternae, these function as different microenvironments, where further modification proteins and lipids into functional biomolecules occurs.

During protein synthesis, transcription occurs in the nucleus, followed by translation within ribosomes, the newly synthesized proteins enter endoplasmic reticulum where they undergo folding and modification. Within the golgi body, the proteins are tagged and parceled into lysosomes for export.

Further Explanation:

The endoplasmic reticulum is a membrane system within the cytoplasm that extends from the outer nuclear membrane. Apart from increasing the surface area within the cell, this continuous system also carries out protein folding, synthesis and transport. In the endoplasmic reticulum or ER, some sections called the smooth ER, do not contain ribosomes, and may contain lipids, enzymes, and other proteins. Other sections bound to ribosomes, are called the rough Er. As a protein destined for the endomembrane system is being synthesized by a ribosome, the first amino acids in the growing polypeptide chain act as a signal sequence. That signal sequence ensures that the ribosome binds to the outer membrane of the ER and that the protein enters the ER lumen. The proteins undergo major modifications and are packed into vesicles.

Golgi bodies are flat, disk-like membranous regions. Proteins traverse the organelle by first having their vesicles bind to the cis face or receiving end. Like a post office, the golgi complex, or golgi body recognizes specific signal sequences, targets and further modifies and packages these compounds into lysosomes for delivery to their final destination.  Proteins here undergo peptide processing and glycosylation

Learn more about cellular life at brainly.com/question/11259903

Learn more about mitochondria and similar structures at brainly.com/question/2855039

#LearnWithBrainly

7 0
3 years ago
The nutrien the nutrients needed in the human diet are ts needed in the human diet are
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Carbohydrates
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4 0
3 years ago
Which statement best describes the difference between the sympathetic and parasympathetic nervous systems? A. The sympathetic sy
kvv77 [185]

The correct answer is option B, that is, the sympathetic system prepares the body for stress and activity and the parasympathetic system prepares the body for rest.  

Both the parasympathetic and sympathetic nervous system are the components of the autonomic nervous system that works obligatorily. The sympathetic nervous system holds the key in controlling the body at the time of stress and injury, it is generally regarded as fight or flight. It contracts the muscles of the heart in order to enhance the rate of the heart.  

On the other hand, the parasympathetic nervous system is responsible to monitor the function of the body when it is at rest. It assists in sustaining the homeostasis in the body. It relaxes the muscles of the heart in order to reduce the rate of the heart.  


4 0
3 years ago
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