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Rufina [12.5K]
3 years ago
5

What two organ systems do white blood cells belong too?

Biology
2 answers:
Elena L [17]3 years ago
8 0
Immune and Cardiovascular? 
MAVERICK [17]3 years ago
7 0
The cardiovascular and immune
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I think meiosis is the process that creates gametes. It is creating sperm or egg, where does it actually start? what I am asking
r-ruslan [8.4K]

~Hello There!~

Meiosis is a form of cell division that results in four daughter cells. It is germline cells (gametes) that undergo this process.

Hope This Helps You!

Good Luck :)

Have A Great Day ^_^

- Hannah ❤

8 0
2 years ago
In the classic Meselson and Stahl experiment, Coli are first grown in 15N-enriched media (0th generation) and subsequently switc
AfilCa [17]

Options are not provided inthe question. Th ecomplete question is as following:

In the classic Meselson and Stahl experiment, Coli are first grown in 15N-enriched media (0th generation) and subsequently switched to 14N media. A DNA sample isolated during the first generation of E. Coli grown in 14N media is subjected to a centrifugation step in a dense CsCl gradient. Assuming that replication occurs in a semiconservative fashion, the DNA sample will _______.

1) run as two bands (of equal intensity), one at the same position as a uniformly 15N-labeled DNA, and one at the same position as a uniformly 14N-labeled DNA.

2) run as one band, at the same position as a uniformly 15N-labeled DNA.

3) run as one band, at the same position as a uniformly 14N-labeled DNA. run as one band, at a position expected for a DNA containing a 14N:15N ratio equal to 7.

4) run as one band, at a position expected for a DNA containing a 14N:15N ratio equal to 1.

Answer:

1)

Explanation:

In 1957, Meselson and Stahl gave an experimental evidence for semi-conservative replication  of DNA, means that each DNA strand act as template for synthesis of new DNA.

For the experiment, they use  E. coli grown in heavy isotope of 15N nitrogen and switch to 14N nitrogen undergoing one, two, or three generations and the DNA samples are collected. The DNA samples are then mix with cesium chloride and separated as light and heavy DNA.

As the replication occurs in a semiconservative fashion, the double DNA sample will run as two bands with intermediate density, having mixtures of 15N and 14N DNA, either of which would have appeared as DNA.

Hence, the correct option is (1).

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3 years ago
The cell membrane regulates the movement of molecules in and out of the cell. What other functions does the cell membrane perfor
solniwko [45]
A cell membrane is semi permeable. It has no other function
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What do we call female reproducyive part ??​
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What do we call female reproductive part ?
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Duncan was a subject in a clinical study that was designed to determine the effects of certain diets on health. While participat
Phantasy [73]

Answer:

The missing options are:

- steroid hormones

- carbs

- essential fatty acids

- PHO

The correct answer is essential fatty acids.

Explanation:

Essential fatty acids are the fats that our body can not produce by itself, but that are essential for the function of the body, so we have to consume foods that have these fats, such as fish, oysters, nuts, chia seeds, soybean oil, etc. The deficiency of these fats causes skin problems, alopecia, anxiety, depression, among other things.

6 0
2 years ago
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