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Afina-wow [57]
3 years ago
14

Describe non disjunction and the effect it can have on a human

Biology
1 answer:
faust18 [17]3 years ago
4 0

non-disjunction is a pathological event that occurs during the second anaphase in meiosis when sister chromatids are not separated. As a result one of the resulting cells will have 1 extra chromosome and the other will be 1 short. An example of a non-disjunction that can occur in humans is Down syndrome that has a frequency of about 1/1000 people. It is caused by the non-disjunction of the 21st pair of chromosomes.

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The species in a community that is more abundant in number or biomass than any other is the ____________ species, althought not
Lera25 [3.4K]

Answer:

The answer is dominant.

Explanation:

The species in a community that is more abundant in number or biomass than any other is the <u>dominant</u> species, although not necessarily the species that has the greatest impact on the community. Dominant species, therefore, also have bigger niches and represent a big part of the competition with others.

4 0
4 years ago
List all four body systems that make up the excretory system and give an example of how each body system eliminates waste.
mart [117]

Answer:

Organs of excretion make up the excretory system.

They include the :

kidneys-Blood by-products are filtered out by the kidneys and leave the body in urine form. They are part of the urinary system, which also includes the ureters, bladder, and urethra

large intestine-By-products enter the intestine and leave the body in the form of feces

liver- breaks down harmful substances. It's by-products are excreted into bile or blood.

skin-Sweating eliminates excess water and salts, as well as a small amount of urea, a byproduct of protein catabolism

lungs- oxygen is exchanged for a waste gas called carbon dioxide. Your bloodstream then carries this waste gas back to the lungs where it is removed from the bloodstream and then exhaled

Hope this helps!!!!!!

Forever friend and helper,

Cammie :)

4 0
3 years ago
Which organelle is responsible for producing the energy for cellular processes? organelle A organelle E organelle F organelle G
Doss [256]

The right answer is organelle G, which represents mitochondria.

Mitochondria is the place of cellular respiration. This is a set of reactions that convert glucose into the energy molecule, ATP. This process involves several steps, including the "Krebs Cycle", a set of metabolic reactions that takes place in the mitochondrial matrix. The enzyme that produces ATP is found in the inner membrane of the mitochondria. For these reasons, the mitochondria is often referred to as the cell's energy factory.

4 0
4 years ago
What are the structural and functional similarities and differences between mitochondria and chloroplasts?
Sveta_85 [38]

Answer:

Similarities between Mitochondria and Chloroplasts-

Both mitochondria and chloroplast consists of DNA , have two membranes, have fluids inside them and convert energy.

Difference between Mitochondria and Chloroplasts-

They have different number of compartments, have different functions, and are involved in different energy processes.

Explanation:

Difference in Mitochondria and Chloroplasts-

a) Chloroplast is found in plants and unicellular organism and Mitochondria is found  all cells.

b) Chloroplast converts solar energy into chemical energy while Mitochondria converts one form of chemical energy into other form of chemical energy

c) Chloroplast is involved in photosynthesis while mitochondria is involved in cellular respiration.

d) Chloroplast has three parts i) Thylakoid ii) stroma  and iii) granum while mitochondria has three parts i) Critsa ii) Matrix

Similarities between Mitochondria and Chloroplasts-

Both mitochondria and chloroplast consists of DNA , have two membranes, have fluids inside them and convert energy.

4 0
3 years ago
Which organisms can cause contagious deceases?
jekas [21]
Protozoans, bacteria, fungi... viruses are not organisms
5 0
3 years ago
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