Answer:
1.5mm
Explanation:
According to this question, Mary is trying to view 5 pollen grains under her microscope. She found out that the 5 pollen grains each with a diameter of 0.3mm could fit along the diameter of the field of view of her microscope.
This means that the diameter of the field of view of Mary's microscope can be calculated as follows:
Diameter of each pollen × no. of pollen that fit in
= 0.3mm × 5
= 1.5mm
Hence, the diameter of the field of view of Mary's microscope is 1.5mm.
Answer:
The correct answer will be- placebo effect
Explanation:
In the given question, the experiment was performed to test the effect of a new drug on humans in which the new drug was given to the experimental group but a non-effective drug to the control group.
This type of study on the control group is known as the placebo effect in which the treatment is provided not on the basis of the drug but on the belief system that the provided drug will treat the problem.
In the given question, the people of control group believed that they received the real treatment which is not the case. Thus, they were provided with the placebo effects.
Thus, the placebo effect is the correct answer.
Answer:
During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.
Explanation:
This may help you out! :)
Answer:
The correct answer is- Histone
Explanation:
DNA is approximately 2.2 m long thread which has to be adjusted in a microscopic nucleus so DNA must be in a supercoiled form to be present in the nucleus and this supercoiling of DNA is done on histone protein.
Histone protein is a positively charged protein that is made up of eight proteins so it is called histone octamer. Each histone has 2 copies of each protein that is H2A, H2B, H3, and H4.
DNA is negatively charged and histone protein is positively charged therefore DNA wraps around histone protein which causes the packaging of DNA. So the correct answer is histone protein.
During evaporation the sun heats a large body of water causing water vapor. What vapor is a gas. Evaporation is also apart of the water cycle, which evaporation in an important tool in the water cycle.
Remember this:
- When water is heated it turns into a gas.
-When water gets to 0°c water freezes.
-When ice is heated, it turns into a liquid.
