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svp [43]
3 years ago
9

Why does rough ER look rough under the microscope? Question 7 options:

Biology
1 answer:
Alex_Xolod [135]3 years ago
8 0
Rough endoplasmic reticulum looks rough under a microscope because it is covered by little ribosomes, that help with protein synthesis. The reason smooth endoplasmic reticulum does not apear rough is because it's synthesis is of lipids and steroids and it therefore does not need these ribosomes.
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Which of the following is not a negative consequence of upward urban growth? a. pollution b. creation of a “heat island” c. incr
Murrr4er [49]
Solution: C. Increased use of surrounding land

Upward urban growth will increase pollution as the number of people will increase. The increase in population and obstruction of free movement of air because of upward urban growth will result in a "heat island". Since the number of inhabitants is going to increase with upward urban growth, waste management will also become an issue.
4 0
3 years ago
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Earth's seasons are caused by its
Ksju [112]

Answer:

seasons are caused by revolutions. hope this helps

6 0
2 years ago
Explain how producers, consumers, and decomposers obtain the energy they need.
lina2011 [118]
Producers get the energy they need from the sun. Consumers get their energy from the plants and animals that they eat. Decomposers get energy from eating dead plants and animals.<span />
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3 years ago
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A survey reveals that 25 percent of a population of 1,000 individuals have attached earlobes (are homozygous recessive for the t
Mumz [18]

Answer:

d. pxp +2pq

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where, p = dominant allele

           q = recessive allele

Here,

 p² represents frequency of homozygous dominant genotype

2pq represents frequency of heterozygous genotype

q² represents frequency of homozygous recessive genotype

Also, although the genotypes p² & 2pq are different from each other yet phenotypically they both will collectively produce dominant trait i.e. free ear lobes not attached earlobes. So the term "p² + 2pq or pxp + 2pq" represents the frequency of the individuals who show the dominant phenotype in this particular population. Dominant phenotype will comprise 75% of the population.

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3 years ago
Vitamin b12 is essential for the proper functioning of which type of cells?
timurjin [86]
<span>nerve cells need b 12 for proper functioning</span>
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