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
Rus_ich [418]
2 years ago
15

1. John observed bacteria at 100X under the oil immersion and then decided to go back to 40X

Biology
1 answer:
weeeeeb [17]2 years ago
6 0

Answer:

The observed image will not be sharp

Explanation:

When 100x microscope objective lens is being used, light refraction in the air is enough high to produce image alterations. Image distortions can be minimized by immersion oil because this liquid has a higher refractive index than air. However, light refraction is not usually noticeable when using 4x, 10x and 40x objective lenses. Moreover, this image will not be sharp after putting oil on the slide and going back to the 40x objective, it is for that reason that the 40x is called 'high dry' lens. In consequence, it is required to clean the immersion oil off the 40x objective. In general, it is required to  to remove the oil and refocus off the slide and lens immediately after oil immersion (it can be done by using an oil-soluble solvent).

You might be interested in
The antibody-containing portion of the blood fluid is called ____.​
Murljashka [212]
The anwer is attached in the form of a file read it.

8 0
3 years ago
What is the function of the antenna proteins in photosynthesis
user100 [1]

Answer:

harvesting of light energy and its transfer to the core

Explanation:

basically, the antennas are ablet o pick up light which is then transferred as energy.

3 0
2 years ago
A student performed an experiment with bags of dialysis tubing filled with distilled water to model the process of osmosis. Dial
Reil [10]

Answer:

Taking into account the principle of osmosis, the question that best addresses experimental design is  <em>How does the effect of environmental sucrose concentrations impact the  movement of water across a membrane?</em>

Explanation:

The experimental design of the student, made with dialysis bags and sucrose at different concentrations should recreate the principle of osmosis, of importance in living beings for organic homeostasis.

Osmosis consists of the movement of water - through a semi-permeable membrane - from a less concentrated solution to a higher concentration solution, following a gradient, to achieve balance.  

The student will observe in his experiment that water moves from the solution with less sucrose concentration to the higher concentration of sugar. Beakers with the highest concentration of sucrose will have the highest weight, due to the increase in liquid volume.

How does the effect of environmental sucrose concentrations impact the  movement of water across a membrane?

The experiment shows that:

  1. The water from the beaker with less sucrose concentration moved -through the dialysis tubes and the membrane- to the beaker containing the most concentrated sucrose.
  2. Different sucrose concentrations will attract different amounts of water, which influences the final weight of each container.

With this experiment the principle of osmosis is confirmed, where the concentration of a solute determines the amount of water that passes through a semipermeable membrane -following a concentration gradient- until equilibrium is reached.

Learn more:

brainly.com/question/1517477

7 0
3 years ago
Read 2 more answers
A client who had a transurethral resection of the prostate is transferred to the postanesthesia care unit with an intravenous (i
kari74 [83]

<span>The nearness of an indwelling urinary catheter and a ceaseless bladder water system are standard postoperative desires after a TURP; they accommodate hemostasis and urinary discharge. A stomach entry point and dressing are available with a suprapubic, not transurethral, prostatectomy. After a TURP the customer at first can expect hematuria and some blood coagulations; the persistent bladder water system keeps the bladder free of clumps and the catheter patent.</span>

6 0
3 years ago
Black eyes are dominant to orange eyes, and green skin is dominant to white skin. sam, a mendalien with black eyes and green ski
Ilia_Sergeevich [38]
<span>Sam, a mendalien with black eyes and green skin, has a parent with orange eyes and white skin. Sam has a dominant phenotype expressed but he has a parent with a recessive phenotype which means he has a heterozygote gene.

Carole is a mendalien with orange eyes and white skin. Since Carole express both recessive phenotypes she should be homozygote recessive.

The key to this problem is how Sam dominant gene will be inherited. Since there are two heterozygote genes, it will be 50% dominant gene inherited for each phenotype. Then the result should be: 
25% Dominant + Dominant =</span>black eyes and green skin<span>
25% Dominant + Recessive =</span>black eyes and white skin
25% Recessive + Dominant  =orange eyes and green skin
25% Recessive + Recessive =orange eyes and white skin
8 0
3 years ago
Other questions:
  • What is the name of the science that studies which traits are passed from parents to offspring
    11·2 answers
  • A baby is born with an extra chromosome in each of it's cells. Which of the following is responsible for the condition?
    8·2 answers
  • Please help me.. ty if you do
    11·1 answer
  • 2 What is the chemical and genetic bases for the blood groups classification?<br>​
    12·1 answer
  • Friction from an object rolling over a surface
    8·1 answer
  • How can a genetic mutation lead to an adaptation in a species
    12·1 answer
  • During receiving of a food order, you notice a bag of rice with signs that the bag has been wet. What do you do?
    7·1 answer
  • Please help I am on a timer.... Also this is 7th grade biology.
    11·1 answer
  • Why do animal cell burst in pure water ​
    8·1 answer
  • Pls help
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!