1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aneli [31]
3 years ago
12

Describe why this is a controlled experiment.

Biology
1 answer:
denis23 [38]3 years ago
3 0
A Only one variable changed
You might be interested in
Most of the nucleated cells in a multicellular organism contain all of the genetic information for the organism. Which of the fo
vova2212 [387]

<u>Answer</u>: Sperm cell

<u>Explanation</u>:

Amongst all the 4 options given, only the Sperm cell is a gamete (sex cell) while all the three are somatic cells.

  • A <em>somatic</em> cell is the one which forms the body of an organism and contains all the genetic information.
  • A <em>gamete</em> is the one which is required for the purpose of fertilization. A gamete of male fuses with the gamete of female in a process called fertilization to form a zygote to give rise to a new individual.
  • A Sperm cell is basically a <em>male gamete.</em> It contains only half the amount of genetic information as the other half is contributed by the female gamete.
  • This difference in the amount of genetic information arises due to the type of cell division that occurs. The somatic cells undergo mitosis whereas a gamete requires meiosis to occur for its formation.
  • During mitosis there is a single round of cell division which divides the parent cell into two daughter cells each with the <em>complete genetic information</em>.
  • During meiosis the cell undergoes two rounds of cell division such that a total lf 4 cells are produced each <em>with half the amount of genetic material </em>as present in the parent cell.

Since, <em>sperm is a male gamete and is formed by meiosis it contains only half the genetic information as compared to the other cells.</em>

3 0
3 years ago
The disaster of an oil spill in the Gulf of Mexico occurred on the _______.
Vesna [10]

Answer: It happened from Apr 20, 2010 – Sep 19, 2010

Explanation:

8 0
3 years ago
How does the DDT originally enter the food chain?
s2008m [1.1K]

Answer:

dichloro-diphenyl-trichloroethane

Explanation:

DDT is an insecticide that can pass up the food chain from insects to small birds, and then from the small birds to birds of prey, like hawks. It can accumulate in the birds of prey, giving them a large amount of DDT

4 0
3 years ago
One societal issue scientist will address ysing the human genome
Zolol [24]
Is this like on a test or like homeowork?

8 0
4 years ago
What is an energy transformation?
Annette [7]
The conversion of one form of energy into another, or the movement of energy from one place to another. Solar panels allow for energy transfer from light energy to heat and electrical energy.
3 0
3 years ago
Other questions:
  • The hypothesis that suggests that life formed near the earth's surface in pools of water is called
    9·1 answer
  • In the 17th century many people in scientist believe spontaneous generation of life occurred what is spontaneous generation and
    13·1 answer
  • How do the two types of fermentation differ?
    6·2 answers
  • Which of the following would be produced by meiosis:
    9·1 answer
  • Which of the following organisms do not carry out photosynthesis
    8·1 answer
  • Which of the following is living organism
    13·1 answer
  • Help me PLEASEE!!! IT will mean alot
    15·2 answers
  • Most plant leaves contain yellow and orange carotenoids as well as green chlorophylls. Why then are most leaves greenish
    13·1 answer
  • HELP ME WITH THESE PROBLEMS PLEASE!!​ I am not for sure if they are correct or not... YOU WILL BE A LIFESAVER AND MARKED BRAINLI
    12·1 answer
  • How does natural selection affect populations?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!