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Ivahew [28]
3 years ago
5

Which nutrient is our main energy source.

Biology
2 answers:
ira [324]3 years ago
8 0

Answer:carbohydrates

Explanation: I take it as this....fruits and vegetables are things we are told that we must eat and they all contain carbonhydrates

saveliy_v [14]3 years ago
3 0

Answer:

ptassium

Explanation:

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It is true. In drosophila, distinct sets of maternal impact gene products must accumulate in the proper region of the embryo to ensure proper anteroposterior and dorsoventral development.

<h3>What makes Drosophila unique?</h3>

The use of Drosophila over vertebrate models has many technological advantages;

  • they are simple and affordable to culture in lab settings,
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<h3>Why is Drosophila referred to be the genetic Cinderella?</h3>
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4 0
1 year ago
Hurry it’s timing me
STALIN [3.7K]

Answer:

Explanation:

The main  function of the plasma membrane is to protect the cell from its surroundings. Made of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules it also regulates the movement of substances in and out of cells. Plasma membranes must be very flexible in order to allow certain cells, such as red blood cells and white blood cells, to change shape as they pass through narrow capillaries. Membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors, which then trigger intracellular responses. Some viruses, such as Human Immunodeficiency Virus (HIV), can intercept  these receptors to get into the cells, causing infections.

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3 years ago
There have been many reports of environmental improvements being seen around the world due to self isolation orders. What do you
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Though the lockdown has undoubtedly had somewhat of a negative impact on certain acpects of our society, there’s no denying that our environment has seen certain benefits since we’ve tucked ourselves away in our homes. According to the Earth Observatory at NASA, satellites have detected decreased levels of air pollution as well as carbon monoxide emission. This is attributed to the closure of most industries as well as the lack of cars and other transportation on the road. Though it isn’t just the air we’re beginning to notice changes in- for the first time in a very long time, the canals in Venice are crystal clear. With fewer boats and tourists about, the water is free of pollution for the first time in centuries. With these facts in mind, I can safely say that I believe the lockdown has definitely positively benefited the environment, but it’s up to us to keep it that way once it ends.
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3 years ago
How are gasses exchanged in the alveoli
Vaselesa [24]

Answer:

The alveolar walls and capillary walls share a membrane. That's how close they're getting. This allows oxygen and carbon dioxide to readily pass from the respiratory system to the circulation. Oxygen molecules bind to red blood cells as they return to the heart.

4 0
2 years ago
Polypeptides that are transported in vesicles are first made by _____ a ribosomes on the rough endoplasmic reticulum. b the smoo
Zielflug [23.3K]

a) ribosomes on the rough endoplasmic reticulum

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