BIOLOGY MIDDLE SCHOOL

Megan wanted to make some calcium chloride (CaCl2) for an experiment. She knew that for every 40g of calcium there would be 71 g of chlorine. Megan only used 20 g of calcium. Calculate how much chlorine would be in the compound.

Answers

Answer 1
Answer: Because 40= 20x2, in order to keep the ratio consistent Megan would need 1/2 of 71 g of chlorine which is 35.5, right?
Answer 2
Answer:

35.5????..........???????>...



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COLLEGE

Koilocytes are characteristic of cells infected with human papillomavirus
cells infected with herpes simplex virus 2
cells infected with all forms of herpesviruses
cervical cancer cells

Answers

Answer:

Cells infected with human papillomavirus.

Explanation:

Koilocyte is a type of squamous epithelial cell that has a number of structural changes, which leads the cell infected by human papillomavirus. Koilocyte have many cellular changes like:

  • A clear area present around the nucleus, called perinuclear halo.
  • Nuclear enlargement.
  • Irregularity of the nuclear membrane.

Human papillomavirus (HPV) is the most common sexually (active) transmitted infection. Sometimes it can be transmitted during birth (from mother to the child).  

MIDDLE SCHOOL

Mercury is a pollutant classified as___? A. a radioactive waste
B. a heavy metal
C. an organic material
D. a pathogen

Answers

Answer: B.  a heavy metal.

Explanation:

Mercury is a heavy metal and can be quite toxic if leaked out

Answer:

heavy metal

Explanation:

HIGH SCHOOL

Which soil layers comprise the topsoil?

Answers

Answer:

A-Horizon and O-Horizon.

Explanation:

O-Horizon is the top layer of the soil made up almost entirely by decomposed organic matter. A-Horizon its found below and is where the seeds germinate, it is made of hummus combined with mineral particles.

The topsoil has the highest concentration of organic matter and is where Earth´s biological activity occurs.

I hope this answer helps you.

A Horizon and O Horizon 

Hope This Helps, :)
HIGH SCHOOL

What is the importance of DNA replication to all living organisms? What is the importance of DNA replication to all living organisms?

A.
DNA replication removes harmful traits from an organism.
B.
DNA replication passes on traits from parents to offspring.
C.
DNA replication ensures that gametes have unique genes.
D.
DNA replication determines which genes are active.

Answers

The correct answer is option B, DNA replication passes on traits from parents to offspring.

Reason -

DNA replication is essential to carry genetic traits from parents to the new offsprings. There are two strands in each parental DNA which gets separate and they then serve as template for the synthesis of new daughter strand by using complementary base pairing. This is known as semiconservative replication as the one strand of parental DNA is conserved

B.DNA replication passes on characters from parents to offsprings


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