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noname [10]
4 years ago
7

What is a cell membrane

Biology
1 answer:
docker41 [41]4 years ago
7 0

Answer:

a semipermeable membrane

Explanation:

This is the same as the plasma membrane, this describes the semipermeable membrane that surrounds the cytoplasm of a cell.

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How do scrubbers reduce the impact of coal use?
elena55 [62]
<span>How do scrubbers reduce the impact of coal use?
a.
Scrubbers remove all harmful emissions from smoke before it leaves the plant.
b.
Scrubbers remove nearly all carbon dioxide from smoke of coal power plants.
c.
Scrubbers remove sulfur from the smoke of coal power plants.
d.
Scrubbers remove large particulates from the smoke of coal power plants.</span>

<span>
</span>

<span>>>THE ANSWER WOULD BE C<<</span>

<span>c.Scrubbers remove sulfur from the smoke of coal power plants.</span>

8 0
4 years ago
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Which of the following is one of the root causes of environmental problems?
allochka39001 [22]

Answer:

The three most important sources of environmental problems are 1) market failure, 2) the tragedy of the commons, and 3) the underprovisioning of public goods

Explanation:

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6 0
3 years ago
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Look at the photo !!!
Georgia [21]

Answer:

When a substance changes into a new substance

5 0
3 years ago
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Why does sodium hydroxide solution affect the requirements for photosynthesis?
Jet001 [13]
This is because the photosynthesis require optimum pH to be slightly alkaline. Bases, such as sodium hydroxide (NaOH), are necessary to raise the pH to levels that are ideal for photosynthesis to occur. 

Since, pH in soil, fresh water or groundwater becomes acidic, plant uptake and photosynthesis rates decrease.  Sodium hydroxide (NaOH) raises pH levels and can affect photosynthesis rates.

4 0
3 years ago
In a population of gerbils ,long hair is completely dominant over short hair .if 18percent of the population has short hair , ca
oee [108]

Answer: 49%

Explanation:

* long hair = P

* shirt hair = q using the Hardy-Weinberg equation for genotypic frequencies

* p^2 + 2pq + q^2 =1

*first use the equation to solve for the known value 18% hh

.18 = q^2

Square root .18 = q

So q = .42

* plug this allelic frequency in to p+q = 1

Which will give you the frequency of dominant alleles

1 - .45 = p So P = .58

Then just plug the P and q values found into the portion of the equation for heterozygous offspring.

2(.58)(.42)

Which is .49 or 49%

The entire population should be 33% homozygous dominant 49% heterozygous and 18% homozygous recessive.

5 0
3 years ago
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