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
Verdich [7]
2 years ago
7

A scientist wants to study the effect of vitamin C on colds. He gave 1000 mg of vitamin C per day to 100 people. What would be t

he best control?
A. Give the control group a pill similar to vitamin C but containing no vitamin C (a placebo)
B. Give the control group 2000 mg of vitamin C per day
C. Give the control group orange juice every day
OD. Give the control group nothing.
O E. Give the control group 1000 mg of another brand of vitamin C per daY
Biology
2 answers:
Flura [38]2 years ago
8 0

Answer:

D

Explanation:

Give the control group nothing. They are going to have to use their own blood system to fight the cold. The difference in results will be if Vit  C produces better results than the nothing group.

Anton [14]2 years ago
5 0
D, I’m assuming that’s their is a another so you give on group nothing and the other group the vitamin C
You might be interested in
Researchers have crossed two true-breeding lines of peas that differ in the color of their leaf tissue: dark green vs pale green
amid [387]

Answer:

150 individuals

Explanation:

If the dark phenotype is determined by a dominant allele at a single locus, the ratio of dark green phenotype to pale green phenotype at F2 should be 3:1 according to the Mendelian standard.

200 to 3:1 = 150:50

<u>Hence, if 200 F2 individuals were characterized, one would expect the number of dark green individuals to be 150 while the pale green would be expected to be 50.</u>

3 0
3 years ago
Where are animal cells found
tigry1 [53]
Animals cells are found inside the animals body. We have no exact place where it is found ;)
5 0
3 years ago
Read 2 more answers
What is the genotype of a male with red-green color blindness?
balandron [24]

Answer:

The genotype of male with red-green color blindness is XY, X chromosome possessing recessive allele of gene responsible for differentiating red-green color.

Explanation:

Color blindness is sex-linked trait and its inheritance follows criss-cross pattern. Dominant gene of allelomorpihc pair enables a person to differentiate between red and green color.

The genotype of male and female are different for the pair of sex chromosomes. Male is hetero-zygous (XY) and female is homo-zygous (XX). The gene controlling this trait is present on X chromosome.

Hope this helps (:

8 0
3 years ago
(GEOLOGY)what type of fault/ fold is this ?
Licemer1 [7]

Anticline!

Hope this helps! :)

5 0
3 years ago
What is nanometres into mm??
Mnenie [13.5K]

Answer:

1 millimeter is 1,000,000 nanometers

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Placer deposits are surface deposits concentrated by
    7·1 answer
  • What 5 factors affect homeostasis
    13·1 answer
  • Explain how the reduction in biodiversity can affect the ecological balance in the dam
    9·1 answer
  • The most famous fossil called Archaeopteryx is which of the following? a dinosaur a fern a fish a bird
    5·2 answers
  • 14. List in order the organic compounds from simple to most complex: Lipids, nucleic acids, carbs &amp; protein.
    12·1 answer
  • The light from a star moving away from us would be experiencing:
    12·1 answer
  • Identify the natural processes that occur on the Earth’s surface to make and destroy rocks
    11·2 answers
  • Hth
    9·1 answer
  • An ____________ such as Prozac mimics the effects of the neurotransmitter serotonin, whereas a(n)_________ include antipsychotic
    7·1 answer
  • What is a good blood pressure?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!