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shtirl [24]
3 years ago
7

If you wished to clearly observe the organelles inside of a white blood cell, which type of microscope would you choose?

Biology
1 answer:
patriot [66]3 years ago
3 0

There are two prior conditions of observing the organelle present within a white blood cell:

1.  Sample WBC is required to be kept alive for observation:

  1. Phase-contrast microscopy: It is a type of light field microscopy that enhances the contrasts of transparent and colourless objects to give a clear view of their edges.
  2. Confocal microscopy: Through the use of laser to illuminate different layers of the WBC.

2. Sample WBC can be killed for observation: Transmission electron microscope can be used to view the cross section of the WBC. The various organelle will be visible in a great detail through this technique of microscopy.

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Please help clearly I don’t get it!! Please!! You’ll get lots of points!! 30
torisob [31]
The independent variable is what will change. The dependent variable is what will change because of the independent variable. The controlled variable is what will stay the same.
Ex, for the first one.
IV: the amount of sunlight
DV: plant growth
CV: pea plant

For #2.
IV: the soda
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CV: soda

And so on
5 0
4 years ago
In humans, the hormone testosterone enters cells and binds to specific proteins, which in turn bind to specific sites on the cel
Crank

Answer:

They act to regulate the expression of specific genes (androgen-responsive)

Explanation:

Testosterone is a reproductive hormone in male humans. Testosterone as well as its closely related hormones e.g dihydrotestosterone, all belong to a class of hormones called "Androgens".

Androgens operate by entering into a cell and binds with specific androgen-receptor proteins (AR proteins). This contact activates the AR proteins, forming an androgen-receptor complex.

This complex then translocates into the nucleus of specific cells to bind to the DNA. Once it binds, it either inhibits or promotes the expression of specific genes (androgen-responsive). Hence, AR proteins are transcription factors because they play a significant role in regulating transcription of specific genes i.e. turning 'on' or 'off' of specific genes.

This process helps to direct the development of male sexual characteristics.

4 0
4 years ago
GIVING BRAINLIEST!!!!<br><br> How does the Pancreas function??
Mnenie [13.5K]
During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood.
4 0
3 years ago
What are some benefits of enzyme production in the process of digestion.
Rudik [331]

Answer:

<u><em>definition;</em></u>

enzymes are protein that catalyze speed up the biochemical reactions and are not changed during the reaction . the molecules at which enzyme work  are called <em>substrate </em> and enzymes convert them into  different molecules called products.

<em><u>benefits of enzyme in digestion ;</u></em>

enzyme lower the activation energy in several ways. they may alter the shape of substrate and reduce the requirement of activation energy . enzyme may also  lower activation energy by bringing substrate in correct orientation to react . enzyme break down <em>carbohydrates, lipids and  proteins  </em>which are component of human food .In digestion larger molecules are broken into smaller molecules like amino acids ,simple sugars ,fatty acid ,vitamins ,salts and water to provide to cells.  these molecules are  a part of larger molecules like protein ,polysaccharids  and lipids . enzymes like amylaze, lypase   ,salivary amylase, pepsin ; it is a very strong protein digesting enzyme it is released in its inactive form pepsinogen  which is converted into pepsin with the help of H-C-L  hydrochloric acid it takes part in digestion in stomach

3 0
3 years ago
How are electrons moved from photosystem II to photosystem I in photosynthesis?
slavikrds [6]
Electrons<span> are transferred from water to plastiquinone in the presence of light. The cytochrome bf complex catalyzes the transfer of </span>electrons<span> from plastoquinol to plastocyanin.</span>
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