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
yanalaym [24]
2 years ago
15

A double-blind, randomized study is being used to test the effectiveness of a new drug that targets the multi-drug resistant bac

terium Clostridium difficile. Infected participants in the study were given either a placebo or the test drug and then monitored for one month for clearance of infection. This type of study can best be characterized as a(n)_________________.
A. observational study
B. cross-sectional study
C. Correlation study
D. experimental study
Biology
1 answer:
fredd [130]2 years ago
8 0

the answer is c. correlation study

You might be interested in
Describe how a dihybrid cross can be utilized to track multiple traits in an organism.
Nina [5.8K]
Me too i need help on this i have no idea what i’m doing
3 0
3 years ago
Heterozygotes at the sickle-cell locus produce both normal and abnormal (sickle-cell) hemoglobin (see Concept 11.4). When hemogl
Stels [109]

Answer:

In an individual's molecular and cellular level, the heterozygote alleles are preferred over the homozygote alleles. In humans, the heterozygote alleles are found at a locus of beta polypeptide subunit of hemoglobin, while on the other hand, the homozygous alleles found at a similar locus are prone to sickle cell disease.  

The individuals carrying homozygous alleles exhibit sickle-shaped RBCs and they also possess low oxygen-carrying capacity, which ultimately results in brain, kidney, or heart failure. However, in the case of heterozygous alleles, the configurations of RBCs are of two kinds, that is, normal shaped and sickle-shaped. Thus, there are not enough sickle-shaped cells to result in the condition.  

The heterozygote alleles are resistant to malaria, thus, in tropical areas, where malaria is a prime issue the heterozygote alleles are preferred over the homozygote dominant alleles as they are vulnerable to the infection and over the homozygote recessive alleles who has sickle cell disease.  

6 0
3 years ago
The hormone insulin is secreted by the pancreas. Which activity is MOST likely to
Oksana_A [137]

Answer:

Eating

<em><u>Hope this helps! <3</u></em>

6 0
3 years ago
Why is nonpoint source pollution difficult to control?
bixtya [17]

Answer:

because it comes from the everyday activities of many different people, such as fertilizing a lawn, using a pesticide, or constructing a road or building.

Explanation:

6 0
3 years ago
Disadvantages of using inorganic manure​
Pie

Answer:

Inorganic fertilizers are not entirely composed of the nutrients needed by the plants. It also contains salts and other compounds. These are not absorbed by the plants so they are left behind in the soil and build up over time.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Antidumping actions seem to be concentrated in certain sectors of the economy such as basic metal industries (e.g., aluminum and
    11·1 answer
  • How is a hypothesis developed and evaluated?
    8·2 answers
  • Patient abuse by a healthcare professional is a breach of medical ethics. how are the offenders punished
    8·2 answers
  • The different forms of a gene are called
    5·1 answer
  • Consider the following pairs of organisms: large predators and small predators; large herbivores and small herbivores; and migra
    15·1 answer
  • Why are only shallow earthquakes abundant near the ocean ridges?
    5·1 answer
  • To much water in a cell that causes it to burst.
    13·1 answer
  • I need help! Will mark BRAINLIEST! :)
    7·1 answer
  • Determine the offspring genotypes:<br>​
    8·1 answer
  • Species with homologous structures most likely:
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!