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Alex Ar [27]
3 years ago
13

Free oxygen formed on earth after

Biology
1 answer:
harina [27]3 years ago
5 0

Answer: (1) photosynthesis occurred

Explanation: The photosynthesis process in cianobacteria changed the composition of earth's atmosphera, rising oxygen levels. This could be possible since photosynthesis used energy from the sun to produce energetic intermediaries to synthesize sugars, and as byproduct due to water photolisis, is oxygen.

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Which of these statements best describes the St. Lawrence Seaway? The St. Lawrence Seaway connects the St. Lawrence River with t
suter [353]
The St. Lawrence Seaway connects the Great Lakes, the St. Lawrence River, and the Atlantic Ocean.
6 0
3 years ago
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Use the drop-down menus to label the organelles in the picture to the right label A
Sergeu [11.5K]
<h3><u>Answer;</u></h3>

Label A; Mitochondria.

Label B; Nucleus.

Label C; Golgi apparatus.

Label D; Rough endoplasmic reticulum

<h3><u>Explanation;</u></h3>
  • All the above are various organelles in a eukaryotic cells each carrying different cellular activity to enhance the functioning of a cell.

Label A; Mitochondria.

  • <u>Mitochondria</u> is the powerhouse of the cell which converts glucose to energy rich molecules of ATP, through the process of cellular respiration.

Label B; Nucleus.

  • <u>Nucleus</u> contains the genetic material or DNA, RNA , nucleolus, chromatin fibres and proteins. It contains the chromosomes which control the hereditary characteristics.It also regulates all the activities of the cell.

Label C; Golgi apparatus.

  • <u>Golgi apparatus;</u> they are also called Golgi bodies. They function in modifying, sorting and packaging of proteins for secretion. They are also involved in the transport of lipids around the cell, and the creation of lysosomes.

Label D; Rough endoplasmic reticulum

  • <u>The rough endoplasmic reticulum</u> provides surface for protein synthesis. It is also used to transport cellular contents from one cell to another.
  • The risbosomes attached on the rough endoplasmic reticulum are resposible for the protein synthesis through the process of translation.

7 0
3 years ago
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Which of the following is NOT correctly matched with the organ system.
UkoKoshka [18]

Answer:

The correct answer is

A. Anxiety- Nervous system

Explanation:

Anxiety has nothing to do with the Nervous system; the nervous system is the nerves in your body and is not what makes you nervous or anxious. All the other answer choices are correct.

4 0
3 years ago
What homeostatic process requires energy to move particles across the plasma membrane
vovikov84 [41]
Active transport.

Passive transport, being its opposite, requires no energy at all. Therefore, active transport would require energy or ATP in order to move across.

Hope this helps!
7 0
3 years ago
Name the enzyme that breaks down H2O2.. Anybody know?!?!?!?!
Alborosie
The enzyme that breaks down H2O2 is called catalase.
3 0
3 years ago
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