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KatRina [158]
3 years ago
15

What are some presumptive tests for blood?

Biology
1 answer:
luda_lava [24]3 years ago
8 0

Answer:

Luminol, leuchomalachite green, phenolphthalein, Hemastix, Hemident, and Bluestar are all used as presumptive tests for blood. In this study, the tests were subjected to dilute blood (from 1:10,000 to 1:10,000,000), many common household substance, and chemicals.

Explanation:

- Eijiro <3

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Photosynthesis is to chloroplasts as cellular respiration is to ______.
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(A) Mitochondria, I believe.
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3 years ago
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Is a type of specialized cell whose main function is to communicate between neurons?
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The type of specialized cell whose main function is to communicate between neurons is a interneuron.
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A pea plant that has round seeds has the genotype Rr. It is crossed with a pea plant that has wrinkled seeds and the genotype rr
Mariulka [41]
The correct answer is 50%, or 1/2. We know that round seeds are dominant, since the round pea plant has a genotype of Rr and the wrinkled pea plant has a genotype of rr. If it helps, draw a Punnett square with the two genotypes.

   R  r
r
r

The square works exactly like a coordinate grid. Combine the letters above and beside whichever of the four spaces you chose to find the genotype for that space.

   R  r
r Rr  rr
r Rr  rr

Therefore, 2 out of 4 of the pea plants have round seeds, since a genotype of Rr means that a plant will have round seeds, and 2 out of 4 will have wrinkled seeds, since a genotype of rr means that a plant will have wrinkled seeds. 2/4 simplifies to 1/2, or 50%. Therefore, there is a 50% chance that the offspring will have wrinkled seeds.

Hope this helps!


6 0
3 years ago
How do animals and people cause weathering?<br><br>How do plants cause weathering ?
Tamiku [17]

Answer:

Plants can cause mechanical and chemical weathering

Explanation:

Plants can cause mechanical and chemical weathering. When plants cause mechanical weathering, their roots grow into rocks and crack them.It can also happen in streets or sidewalks. When plants cause chemical weathering, there roots release acid or other chemicals, onto rocks, which then forms cracks, and breaks apart.

8 0
2 years ago
Population
kkurt [141]

Answer:

b

Explanation:

i took this before and i know its b

8 0
3 years ago
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