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DochEvi [55]
3 years ago
12

What causes the lunar phases that we see from earth?

Biology
1 answer:
xeze [42]3 years ago
7 0
As it moves around the Earth, the side we can see gradually becomes more illuminated by direct sunlight. After a week, the moon is 90 degrees away from the sun in the sky and is half illuminated, what we call "first quarter" because it is about a quarter of the way around the Earth.
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What are some fun facts on animal and plant cells.
ArbitrLikvidat [17]
Animal cells:
They are self sufficient, because of Nano-Chemical factories, so they can make their own stuff like cell membranes.
A cell can destroy itself through apoptosis in the event that it is irreparable.

Plant cells:
These were the first type of cells discovered by us.
Plants only actually use about 1/6 of the energy they get from photosynthesis, the rest is stored for animals that eat the plant.<span />
6 0
3 years ago
Forensic scientists think they know the identity of a skeleton. What rule should they use to select a relative whose DNA could b
julsineya [31]

Answer:

DNA fingerprinting or DNA profiling technique

Explanation:

The DNA sequence is used in forensics to find the identity of a skeleton. A DNA profile is generated from the skeleton remains. The biological materials that can withstand exposure to intense environmental conditions such as heat, a significant amount of time passes are teeth and skeleton. So large quantities of DNA can be purified from these hard tissues.

6 0
4 years ago
How does mitochondria structure affect its function?
Olegator [25]

The outer membrane covers the organelle and contains it like a skin. The inner membrane folds over many times and creates layered structures called cristae. The fluid contained in the mitochondria is called the matrix. The folding of the inner membrane increases the surface area inside the organelle.

Mitochondria are shaped perfectly to maximize their productivity. They are made of two membranes. The outer membrane covers the organelle and contains it like a skin. The inner membrane folds over many times and creates layered structures called cristae. The fluid contained in the mitochondria is called the matrix.  

The folding of the inner membrane increases the surface area inside the organelle. Since many of the chemical reactions happen on the inner membrane, the increased surface area creates more space for reactions to occur. If you have more space to work, you can get more work done. Similar surface area strategies are used by microvilli in your intestines.  

. Mitochondria are special because they have their own ribosomes and DNA floating in the matrix. There are also structures called granules which may control concentrations of ions. Cell biologists are still exploring the activity of granules.  


4 0
3 years ago
cellular respiration occurs in which three stages? light reaction, dark reaction, atp production glycolysis, krebs cycle, electr
zubka84 [21]

Answer:

The correct answer would be glycolysis, Krebs cycle, electron transport.

Cellular respiration refers to the set of the chemical reaction taking place in a cell in order to convert the chemical energy of the food into adenosine triphosphate (ATP).

These chemical reactions can be majorly divided into three stages:

1. Glycolysis: It takes place in the cytoplasm of the cell. It converts one molecule of glucose (6C) into two molecules of pyruvate (3C) with a net gain of 2 ATP molecules and 2 NADH molecules.

The pyruvate is then transported into the mitochondria where rest of the reactions take place.

2. The pyruvate is converted into acetyl Co-A which then enters the Krebs cycle. The cycle undergoes two round to utilize 2 acetyl Co-A and produces 4 CO₂. It also produces 6 NADH, 2 FADH₂, and 2 ATP.

3 All the NADH and FADH₂ produced undergo electron transport chain and produces ATP with the help of oxidative phosphorylation.

4 0
4 years ago
Read 2 more answers
What does Rough ER produce?
e-lub [12.9K]
It produces a high volume of protein as enzymes
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4 years ago
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