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3 years ago

Do all cells have every organelle?

Biology

2 answers:

irinina [24]3 years ago

4 0

Answer:

No.

Explanation:

Some organelles are found only in some cell types.

Luden [163]3 years ago

3 0

No all cells dont have ALL organelles

Explanation:

The chloroplasts mitochondria and etc. all make up the cell which are all organelles but the plant cell and animal cells are made up of different organelles

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Enzyme activity is affected by ph because __________.

d1i1m1o1n [39]

Answer: change the shape of the active site of an enzyme

Explanation:

Enzymes are also sensitive to pH . Changing the pH of its surroundings will also change the shape of the active site of an enzyme. ... This contributes to the folding of the enzyme molecule, its shape, and the shape of the active site. Changing the pH will affect the charges on the amino acid molecules.

3 0

2 years ago

Fossils help us reconstruct plant and animal life in the past as well as their evolutionary processes, which can be either slow

NNADVOKAT [17]

Answer:

True

Explanation:

When we talk about fossils, we are referring to the remains of organisms that had once lived. These are traces of the organisms that existed in the distant past.

These fossil records help us to reconstruct plant and animal life in the past as well as their evolutionary processes, which can be either slow or rapid.

Fossil records reveal extinct species and help us to make sense of the evolutionary processes on earth.

4 0

3 years ago

1. Populations can have variety, despite being made up of the same species. If a population has different expressed traits, this

fgiga [73]

Natural Selection proposes that organisms that are better adapted to their environment are able to survive and reproduce.

Even though these frogs are the same species, their shades of green is what helps them to survive in their habitat. In this case, frogs with a lighter shade of green are able to be seen by predators easier, whereas frogs with darker shades are able to blend in (camouflage) more with their surroundings. After a period of time, due to them being easily seen, lighter-shaded green frogs will die off.

To anseer your question, natural selection would have a gradual affect on the frequency of the alleles. Lighter-green allele frequencies would eventually cut off, and darker-green allele frequencies will increase.

Hopefully the following image will help:
As seen in the image, (please forgive the quality, as I had drawn this on some random kids drawing site on the internet...) you can see the affects of natural selection on the allele frequencies. The brighter-green shades gradually decrease over time, as the darker shades increase.

Hope you find this helpful.

8 0

3 years ago

Explain why both unisexual and bisexual flowers can self pollinate.

rodikova [14]

Answer:

Bisexual flowers:

In order to make a new seed male gamete present in a pollen grain units with the female gamete present in the ovule.

Unisexual flowers:

Unisexual flower can self pollinate where both male and female flowers are present on the same plant. Stigma of the female flower can be pollinated by the pollen of the male flower present on the same plant.

5 0

3 years ago

Read 2 more answers

From a population of red brown orange yellow and green butterflies only the red and green ones survive since they can blend into

Mnenie [13.5K]

The answer is natural selection.

In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. Red and green colors of butterflies increased the chance of their <span>survival and reproduction, so these traits will pass to the next generation.</span>

5 0

3 years ago