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denpristay [2]
4 years ago
10

What is the difference between fish, amphibians, and reptiles? How to classify each.

Biology
1 answer:
pashok25 [27]4 years ago
3 0
Fish live completely in water, amphibians partly in water and land while reptiles live on land. Fish and reptiles have scales while amphibians have smooth skin. Fish breath through gills, amphibians through gills and lungs while reptiles through lungs. They are generally classified as vertebrates.
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Which is more important: species richness or species evenness?
Alex Ar [27]

Answer:

Honestly i think that its Richness because its good to have a good amount of different species so that there is a good number of animals to create a food chain. The amount of animals in a population is important but its more important to have a variety of different animals so that all the populations have other animals to eat or survive off of.

Explanation:

3 0
3 years ago
Name two qualities of the heartbeat that must be observed
Natasha_Volkova [10]

Answer;

-Volumen, and

- Rhythm

Explanation;

-Volumen refers to the force or strengh of the pulse terms are normal full, bounding weak or theady.

-Rhythm refers to the regularity of spacing between beats. terms are regular, irregular, regularly irregularly and intermittent.  Heart rhythm is vital to the function of the heart. If the heart fails to be excited, then no beating occurs.

-A normal heart rate is usually stated as 60 to 100 beats per minute. Slower than 60 is called bradycardia; faster than 100 is tachycardia ("fast heart").

6 0
3 years ago
Read 2 more answers
If a person is heterozygous for the Δ32 allele of the CCR5 gene, how many of the four daughter cells produced by meiosis will ha
never [62]

Answer:

The correct option is B: 2

Explanation:

Before meiosis takes place, the entire genetic material within the cell is replicated, this results in 2 copies of the 2n DNA. Since the person is heterozygous for the mutated allele, there is one copy of it present within one 2n set of chromosomes. Two of the 2n chromosomal sets means there would be two copies of it present in total and when the segregation event happens to create haploid cells, two of the cells will inherit the mutated copy.

Hope that answers the question, have a great day!

6 0
3 years ago
Suppose the DNA sequence for the first message in Part B began with TGT CGA instead of TGA CGA. Would the message change? Why or
alexgriva [62]
The message would change because each base has a specific pair that it bonds with. So the original strand's matching sequence would be (ACT GCT) if they were to change the last letter of the first set of 3 numbers, it would be (ACA GCT), and you can see there is a difference in the first sequence of bases. Hope this helps (:
7 0
3 years ago
After mixing A heat-killed, phosphorescent (light-emitting) strain of bacteria is mixed with a living, non-phosphorescent strain
Ivanshal [37]

Answer:

Phosphorescence in descendants of the living cells.

Explanation:

The DNA acts as the heritable molecule that pass down from the parents to their offsprings and move from one generation to the next generation.  Different experiments had been done to identify the heritable molecules.

In an experiment, non fluorescent become fluorescent when mixed with the dead fluorescet cells. This means the material has been transformed to the non fluorescent cells. The phosphorescent acts as the descendants in the living cells and may be inherited to the future generations as well.

4 0
3 years ago
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