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ss7ja [257]
3 years ago
13

HELP PLEASE

Biology
1 answer:
Ostrovityanka [42]3 years ago
4 0
1. Mattias Schleiden
2. Robert Hooke
3. Microscope
4. Cell membrane
5. Nucleus
6. Nuclei
7. Nuclear membrane
8. Endoplasmic Reticulum
9. Ribosomes
10. Endoplasmic Reticulum
11. Lysosome
12. Vacuole
13. The Cell Wall- provides the plant structure
Chloroplasts- preform photosynthesis
Larger Vacuole- holds excess water for the plant to use later
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Of the species below, only ________ is not an electrolyte.
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C- argon 
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As part of a purification technique, a mixture of small-protein hormones and peptides are placed in a gel and exposed to an elec
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The correct answer is "negative".

Explanation:

At pH 2 the net charge of the R groups of all the amino acids that comprise the peptide in question would be positive. This happens because of the high content of protons in a solution of pH 2, a value that is below the isoelectric point of all the amino acids. Since the peptide would have a positive net charge, it would migrate to the negative terminal of the gel because opposite charges attract each other.

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2 years ago
Explain why red blood cells are unable to replace damaged proteins
Harman [31]


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Due to  lack of DNA and cell organelles, red blood cells cannot be able satisfy the central dogma which  summarizes synthesis of proteins as DNA → RNA → proteins.

DNA has the genetic information on how proteins should be made, RNA is responsible for transferring the information from DNA in the cell nucleus to the ribosomes  in the cytoplasm,  then translating or decoding  this information, which results in the making of  protein.

3 0
3 years ago
There was a change in the environment between
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<h2>Further Explanation </h2>

Evolution is the process of change in all life forms from one generation to the next, and evolutionary biology studies how this evolution takes place. Every generation of organisms inherits traits owned by their parents through genes. <u><em>Changes (called mutations)</em></u> in this gene will produce new traits in the offspring of an organism. In an organism's population, some traits will become more common, while others will disappear. traits that help the survival and reproduction of organisms will be more likely to accumulate in a population than unfavorable traits. This process is called natural selection. The income of more offspring than the number of parents along with the inheritance of these traits is an additional fact about life that supports the scientific basis of natural selection. In a long time, this isolated population will become a new species.

Learn more

Genetic mutation brainly.com/question/793485

Evolution brainly.com/question/312738

Details

Class: Middle School

Subject: Biology

Keywords: Genetic mutation, evolution

4 0
3 years ago
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