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katrin2010 [14]
3 years ago
12

When does puberty occur ? What causes the changes to occur during puberty?

Biology
2 answers:
sergij07 [2.7K]3 years ago
6 0

Answer:

For girls, puberty typically occurs between the ages of nine and thirteen

For boys, puberty typically occurs between the ages of ten and fifteen.

An increase in hormones – estrogen and progesterone in girls and testosterone in boys – causes the changes that happen during puberty.

Explanation:  i just did it on edg.  you welcome.

neonofarm [45]3 years ago
3 0
Puberty occurs in boys at ages 12-14. In girls, it's about 10-12. The changes occur because your body is developing. Have a nice day!
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77.5 years

Explanation:

Preliminary data indicates that life expectancy at birth in the United States had reached a record high in 2003.

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You are trying to see who can stay underwater the longest. You stayed under for 48 seconds! When you come up for air, you take a
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Answer:

All the parts of the cell involved in getting oxygen into your cells so it can help release energy are Mitochondria , Ribosomes ,Peroxisomes and Vesicles.

Explanation: Explaination of all four  parts of the cell involved in getting oxygen into our cells so it can help release energy-

  • <u>MITOCHONDRIA</u> -:"Mitochondria (singular = mitochondrion) are also referred to as a cell's" powerhouses "or" energy factories "because they are responsible for producing the main energy-carrying molecule of the cell, adenosine triphosphate ( ATP). ATP reflects the cell's short-term stored energy. The method of producing ATP using the chemical energy found in glucose and other nutrients is cellular respiration. This method utilizes oxygen in mitochondria and creates carbon dioxide as a waste product.
  • <u>RIBOSOMES -: </u>The cellular structures responsible for protein synthesis are ribosomes. Ribosomes appear either as clusters (polyribosomes) or single, tiny dots floating freely in the cytoplasm when viewed through an electron microscope. They can be connected to the plasma membrane's cytoplasmic side, or to the endoplasmic reticulum's cytoplasmic side and the nuclear envelope's outer membrane.
  • <u>PEROXISOMES -:</u>Peroxisomes are specialized for the use of molecular oxygen to conduct oxidative reactions. They produce hydrogen peroxide, which they use for oxidative purposes, by means of the catalase they contain, removing the excess.
  • <u>VESICLES -:</u> A byproduct of the transformation of vesicles is oxygen. Also, Prochlorococcus develops a large number of vesicles that are used for many important functions: virus protection, genetic information transfer, and nutrient transmission. Via a number of pathways, all cells generate vesicles.

Hence , the parts of the cell involved in getting oxygen into our cells so it can release energy are <u>mitochondria (the main part), ribosomes ,peroxisomes and vesicles.</u>

3 0
3 years ago
Can small trees contribute oxygen?
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Yes, because even though other trees produce more oxygen, the small trees will still produce some oxygen. On top of this there are more small trees than big trees, so even though they make less oxygen, in whole they end up making more when added together!
7 0
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what type of cell has no membrane bound cell? a eukaryotic plant cell? a prokaryotic cell? or a eukaryotic animal cell?
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The answer to the very question you are asking is "plants"
5 0
4 years ago
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If ATP hydrolysis to release energy is inhibited, how would this impact transport across the cell membrane? (3 points)
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Because it’s nutrients
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