When a cell reproduces through cell division, scientists call the reproducing cell the parent cell, and the two cells that result from the division are called daughter cells. The daughter cells are genetically identical to the parent cells. Before a parent cell starts to divide, the DNA in its nucleus replicates, or makes a complete copy of itself. Why is this process necessary?
Correct answer: B. So that each daughter cell receives a complete set of DNA
- A. So that the parent cell will have an extra copy of DNA
- B. So that each daughter cell receives a complete set of DNA
- C. So that each daughter cell will not need to synthesize proteins
- D. So that each daughter cell will receive half its DNA from each parent cell
Explanation
The correct answer is B. The process of DNA replication before cell division ensures that each daughter cell receives a complete set of genetic material identical to the parent cell. Without DNA replication, the genetic material would not be distributed equally between the daughter cells, and they would not be genetically identical to the parent cell.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Scientific Reasoning
Scientific reasoning evaluates hypotheses through observations, variables, controls, measurements and experimental results. Questions involve identifying independent and dependent variables, recognising a fair test, interpreting tables or graphs, distinguishing evidence from opinion, and deciding whether data supports, rejects or leaves a hypothesis unresolved.
Practise Scientific Reasoning
334 free Scientific Reasoning MCQs from Analytical and Logical Reasoning, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Analytical and Logical Reasoning questions like this
Analytical and Logical Reasoning is on 27 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Scientific Reasoning questions
As part of a chemistry experiment, 1025 milliliters of water is mixed into a beaker that contains 175 milliliters of motor oil. After adding the water, how many liters of liquid are in the beaker?
What is the range of this data set?
What is the median of number of hurricanes per decade?
Which of the following is implied by the fact that seafloor spreading at the Mid-Atlantic Ridge is causing the Atlantic Ocean to widen by about 5 centimeters a year?
Pluto has a diameter of just 1,438 miles. It is made mostly of ice and frozen rock. It is very small and has an irregular orbit. It was originally classified as the ninth planet from the Sun, but it has been recategorized as a dwarf planet within the Kuiper belt. Which of the following is not a factual detail about Pluto?
Objects are attracted to one another by the force of gravity. Gravity is proportional to the mass-the amount of matter-objects have; gravity decreases as the distance between the objects increases. An object's weight is a measurement of the Earth's gravitational pull on the object. What happens to the mass and weight of a rocket as it travels beyond Earth's orbit?