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nadezda [96]
3 years ago
14

Fill in the word that completes each sentence.

Biology
2 answers:
SIZIF [17.4K]3 years ago
8 0

Answer:

1. Oxygen  

2. Water  

3. Energy

joja [24]3 years ago
7 0

Answer:

1. Oxygen  

2. Water  

3. Energy

Explanation:

I just did this assignment

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What is the function of RBC
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Answer:

When a red blood cell is placed in a hypertonic solution, it contracts as water is drawn out of the cell and into the surrounding solution. If the same blood cell is placed in a hypotonic solution, the blood cell grows in size. Blood cells in isotonic solutions do not shrink or swell.

The reason that blood cells change in size when placed in a solution with different salt concentration is due to the osmosis process. Osmosis causes solutions with high concentrations of salt to draw water from areas with low concentrations of salt.

There are some exceptions to this phenomenon. Blood cells can draw water and explode when placed in hypertonic solution on some special occasions. Some diseases affect the structural integrity of blood cells. Also, when human blood cells are exposed to temperatures close to freezing, they can draw water and explode.

Osmosis is an important phenomenon for living systems. The amount of salt in a given solution exhibits a tendency to diffuse through the environment, eventually resulting in equilibrium. In addition to blood cells, the kidneys function through the use of osmotic principles. The kidneys filter an animal's blood to remove excess salt and balance the amount of water

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3 years ago
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A sonic boom is produced by a jet. What can you determine about the jet's motion?
IRISSAK [1]
"C" The only way something will make a shockwave or a sonic boom is if it's traveling faster than the speed of sound
6 0
3 years ago
Which correctly describes crossing over?
ollegr [7]

The correct option is A ie the process whereby non-sister chromatids exchange genetic material

  • Between prophase I and metaphase I, a process known as crossing over occurs in which two homologous non-sister chromatids join up and exchange various pieces of genetic material to create two recombinant chromosome sister chromatids.
  • When genetic material is switched between two chromosomes, this process is known as crossing over.
  • It is in charge of causing genetic variation among members of a species.
  • Only the reproductive cells known as gametes undergo this process.
  • The steps involved in crossing over are as follows:

1) Synapsis.

2) Chromosome duplication

3) Crossing over.

4) Terminalizataion.

Learn more about crossing over here :

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2 years ago
How much of our total body weight is water? 30-50 percent 40-60 percent 50-70 percent 60-80 percent?
laila [671]
50-70%. At the age of 1, percentage is around 65%. In adult men, 60% of their bodies is water. 55% of adult women's weight is water due to fat not holding as much water as lean tissue; fat makes up more of women's bodies than men.
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3 years ago
Using Grime’s Triangle as a framework, discuss how natural selection and trade-offs work to form the niche of species.
Jobisdone [24]

Natural selection affects the scope of the niche of a given species. Moreover, trade-offs are associated with differences in traits that also may affect the niche of a species.

<h3>Natural selection and trade-offs </h3>

Natural selection refers to the differential survival or reproduction of individuals in particular environmental conditions.

The different niches occupied by species are mainly a consequence of differential trade-offs among species, i.e., by differential phenotypic features that generate negative correlations among species.

Grime’s Triangle is based on the associations (trade-off) between adaptation to productivity and/or competition, stressful environments (habitats) and disturbance.

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