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ra1l [238]
3 years ago
9

How long does it take for a new activity to improve someone's fitness? Several months A few days A few weeks Several weeks

Biology
1 answer:
Vika [28.1K]3 years ago
8 0

Answer: it's not a few days.

Explanation: I picked a few days and got it wrong.

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Pls help me fast I will mark u as the brainliast.pls help meeee
Andreyy89

Answer and Explanation:

  • The cell looks like a prokaryotic cell.
  • A prokaryotic cell might be recognized by the presence of flagellates used to move (the four long filaments located posterior to the cell). There are also many pili surrounding the cell wall (the small little filaments). There are almost no organelles. There is a circular DNI molecule concentrated in a nucleoid (which seems to be the grey oval in the middle of the cell). Prokaryotic cells also have different compartments that depend on the type of cells, such as chlorosome, carboxysome, phycobilisome, and others (which might be the dark spiral circle in the anterior part of the cell).
  • Two differences with the cell of an onion peel are that the onion peel cell has its genetic material surrounded and protected by the nucleus membrane, whereas the prokaryotic cell lacks a delimitated nucleus. Also, the onion peel cell has a hexagonal shape and lacks flagellates and pili, unlike the prokaryotic cell, which uses the to move. The onion peel is a multicellular structure, while the prokaryote is a one-celled organism.
  • There should always be a cover glass over the cell or tissue we are looking at. Fasten the slide with the stage clips. Move the lens carefully in order not to damage it or the slide. Do not touch or clean the lens with the fingers and try not to stain them.  
3 0
3 years ago
Which would most likely cause a decrease in numbers of woodpeckers in ecosystem
Blizzard [7]
The answer is: A decrease in the number of Trees

Woodpeckers are known for their use of finding food sources on the trucks of trees. They are also popularly own for beating their beaks against a tree trunk in order to provide vibrations and communicate with other woodpeckers.
Contrary to popular belief, they do not eat wood, but trees as a whole form an important part of their habitat.

Hence, the deforestation, cutting down of trees and urbanization can all lead to the decreasing number of woodpeckers in the ecosystem. 

Since the early 20th Century two species of American woodpeckers are already considered extinct.

5 0
3 years ago
Taylor had a serious condition that required removal of the upper third of his small intestine. Based on this information, is Ta
Scorpion4ik [409]

Answer:

Yes, Taylor is at risk for developing multiple nutrient deficiencies since most of the nutrients are absorbed in the upper small intestine.

Explanation:

The small intestine in the gastrointestinal tract has three parts: duodenum, jejunum, and ileum. Most of the digestion and the absorption of nutrients from the digested food occurs in the small intestine.

The removal of the upper part of the small intestine during surgical procedures such as gastric bypass surgery often results in multiple nutrient deficiencies as it alters the natural absorption of nutrients. The common nutrient deficiencies include vitamin B12, calcium, vitamin D, iron, folate, zinc, copper, etc. These deficiencies may lead to other problems like anemia, osteoporosis,  encephalopathy, peripheral neuropathy, etc.

Vitamin B12 is required for the functioning of the nervous system and for the growth and replication of cells. The absorption process of vitamin B12 primarily takes place in the duodenum and ileum of the small intestine. The removal of that part of the small intestine interferes with the natural absorption of vitamin B12 and it results in complications like cognitive difficulties, anemia, neuropathy, etc. The duodenum and jejunum of the small intestine have an important role in iron and copper absorption. Iron deficiency can cause anemia, fatigue and copper deficiency may cause increased muscle tone, difficulty in walking, neuropathy, skin changes, psychiatric disorders, etc. Most of the ingested calcium is absorbed primarily in the duodenum of the small intestine and its deficiency often results in osteoporosis, reduced bone growth, etc. The folate and zinc absorption takes place across the intestinal walls. The reduced zinc absorption causes folate deficiency and it leads to birth defects, decreased erythropoiesis, megaloblastic anemia, neurologic problems, etc.

4 0
3 years ago
Large curves in rivers are called:<br>a Floodplains<br>b Oxbow lakes<br>C Curvets<br>d Meanders​
Alona [7]
I believe the answer is D) meanders
4 0
3 years ago
How are molecules moved across the membrane during active transport? A. They slide through the small spaces in the membrane. B.
Mademuasel [1]

B. They are moved using transport proteins and pumps.

5 0
4 years ago
Read 2 more answers
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