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Nata [24]
3 years ago
7

How do scanning electron microscopes differ from transmission microscopes

Biology
1 answer:
Phoenix [80]3 years ago
3 0
The accelerating voltages are much lower than in TEM because it is no longer necessary to penetrate the specimen; in a SEM they range from 50 to 30,000 volts;

as well as rather than the broad static beam used in TEM, the SEM beam is focused to a fine point and scans line by line over the sample surface in a rectangular raster pattern
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DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wan
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<span>The variables in this study would be the folic acid used (the independent variable) and the DNA formed through the implementation (the dependent variable). By changing the amount of folic acid used in the experiment, the DNA will possibly be changed in the microbes.</span>
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3 years ago
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4 0
3 years ago
Organism A has blunt teeth, while organism B has sharp ones. Identify the organisms on basis of their feed habit and give anothe
VikaD [51]

Answer:

- Organism A is most likely a herbivore

- Organism B is most likey a carnivore

Explanation:

Based on feeding habit, organisms, usually animals, can be classified into three categories namely: herbivores, carnivores and omnivores.

- Herbivores are those organisms that feed on vegetative matter i.e. plants while carnivores are those organisms that feed on flesh of other animals or organisms. Based on what they feed on, herbivores are adapted to possess blunt teeth (for chewing) like Organism A in this question while carnivores are adapted to possess sharp teeth (for tearing flesh) like Organism B.

Based on the above explanation, organism A is most likely a HERBIVORE while organisms B is most likely a CARNIVORE.

- Another notable point of difference between herbivores and carnivores, which is likely to differentiate organism A and B as well, is that herbivores possess digestive enzyme- amylase in their saliva while carnivores do not. Herbivores need AMYLASE to break down complex carbohydrate (starch) in the plants they feed on.

7 0
3 years ago
describe the key observations that showed blending inheritance did not explain the inheritance of discrete traits.
Lerok [7]

Answer:

Explanation:

Mendel's conclusions disproved blending inheritance because when cross breeding, only one trait, which is the dominant trait, will be shown instead of a blend of both traits. For each gene, how many alleles are inherited from one parent? For each gene, one alleles is inherited from each parent

3 0
3 years ago
For which reasons would a male peacock spread his
morpeh [17]

Answer:

definitely:

o To attract a peahen

o To intimidate rivals

Maybe:

o To Cool off

o To protect his peachicks

For sure incorrect:

o To show that he is healthy

o To run from a predator

5 0
3 years ago
Read 2 more answers
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