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
Margaret [11]
3 years ago
11

An animal study is being conducted to determine the effect of vitamin C on the incidence of common cold. The researcher gives on

e group of rats the vitamin C pills and the other group of rats gets the ""dummy"" pill (placebo). The rats that received the placebo would be called the _____ group.
Biology
1 answer:
Sav [38]3 years ago
5 0
<h2>Placebo Effect</h2><h2>Explanation:</h2>
  • C<u>ontrol group </u>is Right Answer.
  • An animal study is being conducted to determine the effect of vitamin C on the incidence of common cold.
  • The researcher gives one group of rats the vitamin C pills and the other group of rats gets the ""dummy"" pill (placebo).
  • The rats that received the placebo would be called the <u>control group.</u>
  • Endogenous opioids, for example, endorphins and enkephalins, are normal pain alleviating synthetic substances created in the body.
  • Absense of pain because of the misleading impact is reliant upon the actuation of propositions endogenous opioids in the brain.

You might be interested in
Which statement about the light-independent reactions in photosynthesis is true?.
rjkz [21]

Answer:

The correct answer would be They comprise the Calvin cycle.

Calvin cycle refers to the set of chemical reactions taking place in the stroma of the chloroplast in which carbon is fixed into food (glucose). The whole process is divided into three stages namely: fixation, reduction, and regeneration (ribulose bisphosphate or RuBP).

It takes place in light-independent reaction of the the photosynthesis.

It does not require light energy to carry out the reactions however, it depends upon the products of light reaction (ATP and NADPH).

Fixation of one molecule of glucose requires 6 molecules of carbon dioxide, 9 ATP and 6 NADPH.

The fixation of carbon is catalyzed by an enzyme RuBisCO.

3 0
3 years ago
Read 2 more answers
imagine a cell-surface receptor protein is being newly synthesized. How can it get into the membrane that it will ultimately be
motikmotik

Answer:

the steps for a new receptor synthesis:

Explanation:

Do not forget the steps vary from an eukarityc cell to prokarityc one.  

IN AN EUKARYOTIC CELL:

1- Transcription: in the nucleus, mRNA is synthesized from the DNA sequence that codifies the protein. Exons are spliced if needed by spliceosomes.  

2- From nucleus into cytoplasm: mRNA goes through nuclear membrane into the cytoplasm were ribosomes, substrates for protein synthesis and other organelles are.

3- Ribosomes recognize a signal in mRNA and start reading the genetic code, three consecutive nucleotides at a time and adjust the correspondent tRNAs (tRNAs carry the aminoacids)  

4- Peptide bonds are formed between consecutives aminoacids, and a polypeptide is build up according to the mRNA sequence.

5- (The mRNA has a signal that is recognized by the rough endoplasmic reticulum) The peptide goes into this reticulum (RER) and then into Golgi apparatus. (more chemical modifications are made if needed). By this moment the protein has an inserted portion in a lipid membrane.

6- The protein is transported in a vessel that finally fusions with cytoplasmic membrane and the receptor is in destiny. Hydrophobic aminoacid sequences are inserted in membrane.

IN A PROKARYTIC CELL:

1- Transcription (no splicing is needed, there are not exons)

2- There are not nucleus and cytoplasm divided (no transport)

3- Ribosomes recognize a signal in mRNA and start reading the genetic code, three consecutive nucleotides at a time and adjust the correspondent tRNAs (tRNAs carry the aminoacids)

4- Peptide bonds are formed between consecutives aminoacids, and a polypeptide is build up according to the mRNA sequence.

5- The mRNA has a signal that is guides the growing protein to cellular membrane. Hydrophobic aminoacid sequences are inserted in membrane.

8 0
3 years ago
What is meant by the following statement about the cell membrane?
AysviL [449]

Answer:

The cell membrane is semipermeable because allows only certain molecules to pass through.

Explanation:

Semipermeability is a common property of cell membranes, due to their predominantly lipid composition, which gives them a hydrophobic character.

The cytoplasmic membrane is constituted by a double layer of lipids, in addition to structural proteins and glucides, which prevent the entry of polar or charged molecules. This characteristic allows lipids and small molecules without charge to pass freely through it.

Regarding the other options:

<em>     A. Cell membranes are associated with lysosomes, structures that contain enzymes. However, this characteristic is not related to semipermeability.</em>

<em>     C. They allow the passage of small molecules - devoid of charge - through them.</em>

<em>     D. Not all non-polar molecules pass through, as some need a transporter.</em>

6 0
3 years ago
Read 2 more answers
Although both the mitosis and meiosis begin with a diploid cell that contains replicated chromosomes, they also have distict cha
Alex73 [517]
Hello!

Meiosis occurs in humans, animals, plants and fungi, and its a sexual type of reproduction. The daughter cells are different, cause the chromosomes are mixed. Mitosis is a asexual type of reproduction and the daughter cells are identical.

hugs!
4 0
3 years ago
Read 2 more answers
suppose an organism's heart cells have 10 chromosomes. how many will it's eggs have?how many does its sperms cells have?
pickupchik [31]
The eggs will have 5 chromosomes and the sperm would have 5 chromosomes because when they combine, they equal to a total of 10 chromosomes.
5 0
3 years ago
Other questions:
  • 3. What type of tissue actually moves the chicken wing? <br><br> PLEASE ANSWER ASAP
    13·2 answers
  • Moss is an example of which type of plant?
    13·2 answers
  • The time between application of the stimulus to a motor neuron and the beginning of contraction is called the _____ phase.
    12·2 answers
  • Velocity of a dog that runs 120 meters towards a cat in 60 seconds.
    7·1 answer
  • Translation of the DNA sequence AAGCTGGGA would result inA)an mRNA strand with the sequence TTCGACCCT.
    8·2 answers
  • I don’t know if the bottom is considered a brake or if it is not.
    6·1 answer
  • How heavy is an elephant at birth?
    15·2 answers
  • What organelle has the same function like a waste disposal plant
    8·1 answer
  • A vein in a leaf has what important function?
    6·1 answer
  • The study and manipulation of dna on a molecular level is known as.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!