The question was incomplete as the question part was missing. however, the correct question is as follow:
Which statement best explains why the researchers’ conclusion was not justified?
The experiment tested too many variables.
The control group was not treated the same as the experimental group.
The sample size of twenty-four petri dishes is not large enough.
The single type of bacteria is not adequate to make any conclusions.
Answer:
The correct answer is - The control group was not treated the same as the experimental group.
Explanation:
In this research, the researchers made two groups experimental group and control group, these groups are meant to get the same treatment except the variable to be measured so they can compare the result.
Here the experimented group was left open while the control group was left closed which lead to the fact the bacteria propagate through the air and not the hand
Thus, the correct answer is - The control group was not treated the same as the experimental group.
Answer:
The correct answer is - 130 kDa, 82 kDa, 45 KDa.
Explanation:
In the question given is there are 4 subunits in protein omicron in which two subunits are - 65 kDa and the other two subunits are - 85 kDa and 45 kDa.
So the size band would be in absence of beta-mercaptoethanol which is very essential to break down disulfide bonds that held together these subunits:
Size band = 65 KDa + 65 KDa
= 130 KDa (one band) (
65+65=130),
82, 45 as without beta mercaptoethanol disulfide bond is not broken
.
Thus, the correct answer is - 130 kDa, 82 kDa, 45 KDa.
Complete question:
Question: Susan was bitten by an Anopheles mosquito and tested positive for malaria. What type of pathogen has caused this infection
a. Bacterium
b. Protozoan
c. Prion
d. Virus
Answer:
b. Protozoan
Explanation:
Plasmodium is the causative agent of malaria and is carried by female Anopheles mosquito. The parasite enters the bloodstream when the female Anopheles mosquito bites. Plasmodium is a parasitic protozoan and belongs to the kingdom Protista. Protozoans are unicellular eukaryotes. They are heterotrophic organisms and derive their nutrition from parasitism or predation. Plasmodium is a sporozoan since its spore life stage of the life cycle is infectious.