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Bess [88]
3 years ago
8

how does tobacco smoke effect the body? a.it blocks hemoglobin from binding to oxygen, thus affecting gas exchange in the lungs

b. it paralyzes cilia in the trachea allowing inhaled particles to enter the lungs c. it causes an increase in heart rate and blood pressure d.all of the above
Biology
1 answer:
sineoko [7]3 years ago
8 0
The answer is d: all of the above! Hope this help!
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True or false questions PLEASEE HELP :(
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1 is true 2 is true 3 is true 4 is falls and all the rest are true
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NOT BIOLOGY ITS SCIENCE PLEASE HELP ASAP PLEASE PLEASE PLEASE
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Answer:78

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water's unique property of ______ allows water molecules to stick together so they can be pulled upward by the force of transpir
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Cohesion. Cohesion is the property of water that attracts other water molecules so they can stick together. Water is sticky because it has positive and negative charge in the oxygen and hydrogen ends that attracts one water molecule to another. Adhesion is also a property of water that attracts it from other substances, making it easy for water to travel upwards through transpiration.
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3 years ago
Assume that a certain prokaryote is shaped like a ball, lives deep under the water on the ocean floor, and consumes dead organis
natulia [17]
That prokaryote is <span>Psychrophile, a coccus and a decomposer.

1)The prokaryote is</span> shaped like a ball or generally has a round shape so it's called a coccus (Cocci in plural). This is one out of three terms, that are used to name bacteria. The other ones are bacillus and spiral. For example, Staphylococcus aureus is a bacteria that has a round shape but it's formed by more that one ball, that together look like a bunch of grapes.

2) This organism lives deep under the water, so it's named as a psychrophile or cryophile. This means they can live and reproduction at extremely low temperatures(-20ºC), and some places with those temperatures are the polar regions and the deep sea.

3) This prokaryote consumes dead organisms so it's classified as a decomposer.
Decomposers are organisms that can break down dead or decaying organisms. The process is an essential part of the nutrient cycle and is important for recycling the organic matter that occupies space in the biosphere.
6 0
3 years ago
Through which microscope were cells first observed?
poizon [28]

Compound microscope

<h3>Further explanation</h3>

In 1665, Robert Hooke used a compound microscope to observe cells. Hooke observes the cell walls of dead plants (in the form of cork) when they appear under a microscope. He named it the cell because it looked similar to a cellula or small room inhabited by monks.

Development of microscopy:

  • 1590: Hans and Zacharias Janssen, as Dutch lens grinders, mounted two lenses in a tube to produce the first compound microscope.
  • 1660: Robert Hooke published <em>Micrographia</em>, containing detailed observations of biological materials made with the best compound microscope.
  • 1676: Anton van Leeuwenhoek was the first person to observe a live cell under a microscope, i.e., the algae Spirogyra.
  • 1931: Ernst Ruska constructed the first electron microscope. With the invention of the electron microscope, many infectious agents smaller than bacteria could be seen.

Until now, we can see how important the use of microscopes, especially in microbiology, that is the study of microorganisms.

<h3>Learn more</h3>
  1. How was the water filtered to remove debris and living organisms?  brainly.com/question/5646770
  2. About the single bonds in fatty acids brainly.com/question/1386856
  3. The theoretical density of platinum which has the FCC crystal structure. brainly.com/question/5048216

Keywords: compound microscope, Robert Hooke, cells first observed, cork, dead plant, walls, Anton van Leeuwenhoek

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3 years ago
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