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laila [671]
3 years ago
7

Compare and contrast light microscopes, scanning electron microscopes, and transmission electron microscopes. Sort each statemen

t into the correct box. Some statements may apply to more than one type of microscope. Some statements may not be used
Biology
1 answer:
Contact [7]3 years ago
7 0

<u>Answer:</u>

<em>Light microscope, scanning electron microscopes and transmission electron microscopes have several similarities as well as differences.</em>

<u>Explanation:</u>

<em>1. Light microscopes</em> make use of visible light while scanning electron microscopes and transmission electron microscopes makes use of electrons. <em>Scanning electron microscopes use scattered electrons while transmission electron microscopes use electrons transmitted through the sample. </em>

<em>2. Since electrons are used scanning electron microscopes</em> and transmission electron microscopes require vacuum for their working. Hence they cannot be used to analyze living samples. <em>Light microscopes doesn’t require vacuum for their working and hence can be used to study living samples. </em>

<em>3. Scanning electron microscopes are used to observe the surface of specimen </em>while transmission electron microscopes are used to make a ‘through the’ specimen analysis. This makes the specimen preparation for each of the microscopes different. <em>Transmission electron microscope requires thin specimens while scanning electron microscope doesn’t practically require any specimen preparation. </em>

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Interpret the Punnett square. A Punnett square with four rows and four columns. The first row is labeled big-A, big-B. The secon
Naddika [18.5K]

Answer:

The genotypes shown represent gametes. False

One of the possible offspring genotypes is AABB. True

The parent genotypes are ABAbaBab×ABAbaBab. True

The parent genotypes are ABAbaBab×ABAbaBab. True

This cross shows two alleles for two traits. True

The gametes are diploid and the offspring are diploid. False

The genotypes shown are correct for a dihybrid cross. True

Explanation:

║ AB ║ Ab ║ aB ║ ab

AB║ABAB ║ ABAb║ABaB║ABab

Ab║ AbAB║ AbAb ║AbaB║Abab

aB║aBAB ║ aBAb ║aBaB║aBab

ab║abAB ║ abAb ║abaB ║abab

Drawing the Punnett square we can deduce that the genotypes shown do not represent gametes because there are more than 2 pairs of chromosomes.

As shown in the second column second row of the Punnett square one of the possible genotypes is AABB, it is distributed different (ABAB) but it is the same possible genotype.

The parents' genotypes are the ones that are written in the first columns and first row, they coincide with the ones in the statement.

A dihybrid cross shows the cross between two genes that have different traits.

The gametes are always haploid and the offspring are diploid because the two gametes come together.

7 0
3 years ago
Que sucedería con la especie humana si debido a una futura mutación genética sus células no pudieran realizar los procesos de mi
MaRussiya [10]

Answer:

la vida no podría continuar sin los procesos de división celular  

Explanation:

La mitosis es el proceso de división celular mediante el cual se producen dos células idénticas a partir de una sola célula. Durante la mitosis la célula crece y duplica la cantidad de ADN, con lo cual exactamente el mismo contenido de información genética es trasmitido a las sucesivas células que el proceso de mitosis va a dar origen. Por otra parte, la meiosis es un proceso celular en el cual se producen dos divisiones nucleares y citoplasmáticas (meiosis I y meiosis II) las cuales son precedidas por una fase de replicación del ADN. En la especie humana, la mitosis da lugar a células diploides (2n) con dos set completos de cromosomas homólogos, mientras que la meiosis da lugar a cuatro células haploides (n) llamadas gametos (el gameto masculino es el espermatozoide y el gameto femenino es el óvulo) las cuales contienen la mitad del número cromosómico al de la célula de origen. En organismos eucariotas pluricelulares tales como la especie humana, la función de la mitosis es producir más células somáticas (soma: cuerpo) con idéntico material genético, mientras que la función de la meiosis es producir células aptas para el proceso de reproducción, es decir, células con la mitad del material genético que se fusionarán para generar una célula diploide o zigoto a partir del cual y mediante sucesivas mitosis se desarrollará un organismo adulto.

5 0
3 years ago
In which stage do vertebrate embryos or offspring show the most similarities?
prisoha [69]

Answer:

Explanation:

I think the answer is B middle stage

Please give me brainliest if it helped

5 0
3 years ago
El hierro expuesto al aire libre es física o química?
suter [353]

Answer:

Chemical. quimico

Explanation:

Hope this helps. Chemical, because it's being exposed, no one is exposing it.

Espero que esto ayude. Quimico, porque esta expuesto, nadie lo esta exponiendo.

se un poco de espanol

buena suerte

8 0
3 years ago
Read 2 more answers
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belka [17]
Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.
3 0
3 years ago
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