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adell [148]
3 years ago
15

If a person had not drunk any water for 8 hours before collecting a sample, would you expect his/her urine to have a high or low

specific gravity? Why?
Biology
1 answer:
Mrrafil [7]3 years ago
7 0

Answer:

The person’s urine will have a high specific gravity

Explanation:

A high specific gravity is characterized by an increased concentration of solutes in the urine of am individual. A low specific gravity is characterized by a low or decreased concentration of the solutes.This is usually due to dehydration as a result of environmental conditions or tedious physical activities.

This explains why a person who had not drank any water for 8 hours and is dehydrated before collecting a sample is thought to have a urine with a high specific gravity

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A student completed a lab report. Which correctly describes the difference between the “Question” and “Hypothesis” sections of h
docker41 [41]
The difference between the "Question" and the "Hypothesis" is that a hypothesis is what you believe is the answer to the question based off of limited evidence while the question is just a regular question e.x. (for question) "Why is the water moving to the south?"
then using whatever evidence they will have they would do a hypothesis e.x. (for hypothesis) I believe the water is moving south due to the wind coming down from the north... or due to a current.
8 0
3 years ago
ompared to eukaryotes, prokaryotes are ________. Compared to eukaryotes, prokaryotes are ________. simpler morphologically and m
Savatey [412]

Answer:

In compare to eukaryotes,prokaryotes are morphologically simpler,more evolutionary primitive,less sensitive to physical environment.

Explanation:

Prokaryotes are unicellular organism which don't possess cell organelle like nucleus,mitochondria,Endoplasmic reticulum,golgi body, etc.

They are the first living organism in the primitive earth and the genetic components are located in the cytoplasm which is enclosed by cell membrane.

prokaryotes contain 3 domains that are Archaea, bacteria and eukarya.

The cytoplasm is enclosed by cell membrane.

Molecular studies have reveal that eukaryotes are evolved from prokaryotes.

Some prokaryotes bear long projection which helps them for locomotion,called as flagellum.This is present in gram positive and gram negative bacteria.

7 0
2 years ago
How specifies that are separated for a river, rocks, mountains, forest ; can at some point not being able to interbreed anymore
Allushta [10]

Answer:

Species separated by a physical barrier for a long time, suffer allopatric speciation, so they can not interbreed anymore.

Explanation:

Allopatric speciation consists of the geographic separation of a continuous genetic background giving place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flow, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

Vicariance is the geographical separation of an original population into two or more new groups. Discontinuities in the physical environment like rivers, mountains, water, etc., are physical barriers that impede genetic flow between the separated groups.

The process of allopatric speciation involves different steps:  

  1. The emergence of the barrier.  
  2. Interruption in the genetic interchange
  3. The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
  4. Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.  
  5. Prezigotic isolation mechanisms favored by selection once occurs a secondary contact between the new species in formation.

8 0
2 years ago
What is an alternative hypothesis in biology.
Lina20 [59]
Definition. The hypothesis accepted to be true if the null hypothesis is rejected based on statistical evidence. Supplement. In the statistical testing of hypothesis, the two rival hypotheses are the null hypothesis and the alternative hypothesis.
3 0
2 years ago
4. If index of refraction 1 is 1.5, index of refraction 2 is 2.0, and the angle of incidence is 45 degrees, what is the angle of
motikmotik

Answer: The angle of refraction is 32°

Explanation:

By snell law, we have that:

n₁*sen(θ₁) = n₂*sen(θ₂)

Where n₁ = 1.5

n₂ = 2.0

θ₁ = 45°.

then we want to find the angle of refraction.

1.5*sin(45°) = 2*sin(x)

x = Asin(1.5*sin(45°)/2) = 32°

7 0
2 years ago
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