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Pani-rosa [81]
3 years ago
10

Write down four differences between plant and animal cell

Biology
1 answer:
ehidna [41]3 years ago
5 0

Answer:

Plant cells have cell wall but animal cell doesn't

Plant cells have chloroplast  but animal cell doesn't

Plant cells has large vacuole but animal cell has smaller vacuole

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Which of these activities increases the amount of carbon in the atmosphere?
TEA [102]

Answer:

B.

burning of fossil fuels

it increase the amount of carbon present in atmosphere.

4 0
2 years ago
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Which of the following are among the most common second messengers?
frosja888 [35]

Answer:

The correct answer would be calcium ion and cAMP.

Secondary messengers refers to the intracellular signaling molecules which pass the signals from the receptors located on the surface of the cell to the target molecule present within the cell.

The secondary messengers can be classified into three major class:

  1. Cyclic nucleotide for example cAMP (cyclic adenosine monophosphate), cGMP (cyclic guanosine monophosphate)
  2. DAG (diacylglycerol) and IP₃ (inositol triphosphate)
  3. Calcium ions (Ca⁺⁺)  

Hence, from the given options, calcium ion and cAMP would make the correct choice.

3 0
3 years ago
Please help as soon as possible! : )
dolphi86 [110]
Hey there!

Here is a paraphrased version of the text:

Objects that are nonliving never had the qualities of life, and never will. Things that are dead did have an experience to have the qualities of life, but then they eventually die, they fail to keep some of the characteristics. So in science, dead is not an identical word to nonliving. A rock is nonliving, a fallen tree is dead, and a moose is living.

Note: While paraphrasing a text, a good thing to do is to think of as many synonyms of the words in the text as you can.

Hope this helps you.
Have a great day!
3 0
3 years ago
Read 2 more answers
Dna plus its associated proteins is called a ________. centromere genome chromatin gene
anyanavicka [17]
The correct answer is chromatin. Chromatin<span> describes macromolecules in cells composed on </span>DNA<span>, </span>protein <span>and </span>RNA. Chromatin has various functions in cells. The main functions are<span> to package DNA into a compact shape,  to allow mitosis by reinforcing the DNA macromolecule,</span><span> to prevent </span>DNA damage<span>, and to control </span>gene expression<span> and DNA replication. </span>
5 0
3 years ago
In the fossil record, there are many species that have remained unchanged. In all geological strata in which they appear, they a
victus00 [196]

Answer:

The given blank can be filed with stasis.

Explanation:

There are various kinds of species that have been discovered in the world and had remained unmodified, that is, right from the start. This has been supported by their fossil records that in the geological strata they were witnessed unchanged. This phenomenon is termed as stasis, in which the species do not exhibit any kind of directional change. The starfish, lungfish, and the tribolates belong to this category, that is, their current time appearance is identical to the fossil records.

7 0
3 years ago
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