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Tpy6a [65]
3 years ago
12

Features of plant cells that clearly make them different from animal cells are

Biology
1 answer:
qwelly [4]3 years ago
7 0
Plant cells have cell walls & contain chlorophyll, whereas animal cells do not
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Using the diagram below, what percentage of the human body is inorganic material?
PolarNik [594]
I think water + mineral salts as they are not organic. So therefore in my opinion i would say B
3 0
3 years ago
Secondary structures are stabilized by which type of interaction?
Brrunno [24]
This pertains to the structure of proteins. Secondary structures are stabilized by the presence of hydrogen bonds. The common types of secondary structures of proteins are the alpha helix and the beta sheets, each performing different functions. 

Primary structure of protein is the peptide molecule comprised of peptide bonds. Once these peptide grows long enough, it will either be arranged into alpha helices or beta sheets stabilized by hydrogen bonds and this is the secondary structure. Once there is protein folding involved in the secondary structure of protein, then the folded protein is called the tertiary structure (or a protein subunit). When protein subunits come together to perform a specific function, then that is the quaternary structure.

Attached is a figure concerning the protein structures.

8 0
3 years ago
Meiosis reduces chromosome number and rearranges genetic information. Explain how the reduction and rearrangement are accomplish
Alisiya [41]

Answer:

Explanation:

Meiosis is a form of cell division that occurs in the sex cells of organisms. It ensures the reduction of a diploid cell to an haploid cell to allow for the formation of a diploid zygote after fertilization (contribution of both parents haploid sex cells to give a diploid zygote). Thus, this process is very essential and important.

The reduction is accomplished by 2 divisions after the duplication of chromosomes

- first division: separation of homologous pairs of chromosomes (this reduces the total in half)

- second division: separation of sister chromatids of a chromosome.

The rearrangement in meiosis occurs by crossing over/genetic recombination.

This is the exchange of genetic material between homologous pairs of chromosome bringing about a rearrangement and genetic variation

An example of a chromosomal abnormality that arises as a result of defects in this process is the Down Syndrome which is caused by a nondisjunction of the chromosomes 21 pair in a sex cell.

This condition produces offsprings that have some characteristic facial features, short stature etc

6 0
3 years ago
The process in which haploid gametes are formed in diploid organisms is called
maria [59]

Answer:

There are two types of cell division Mitosis and Meiosis

a cell divides to form diploid gametes during mitosis and haploid during meiosis

6 0
3 years ago
When researchers create __________, they are destroying a piece of the brain. A. Holes B. Currents C. Images D. Lesions Please s
Ira Lisetskai [31]
When researchers create lesions, they are destroying a piece of the brain.

8 0
2 years ago
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