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Mumz [18]
3 years ago
7

Help me plz!!!!!!!!!!!!!!!

Biology
1 answer:
stepladder [879]3 years ago
3 0
Rainfall and ocean waves
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Which of the following is not true about prokaryotic cells?
statuscvo [17]

Answer:

Prokaryotes lack a true nucleus with well defined nuclear membrane and other membrane-bound organelles. Mitochondria are the double membrane bound organelle and hence is absent in prokaryotes. Mesosome is an extension of the cell membrane presence in the cytoplasm as infolding and serves to increases surface area and as a site for cellular respiration in prokaryotes. Histones are positively charged proteins that serve in the packaging of negatively charged eukaryotic DNA but are absent in prokaryotes.

So, the correct answer is option A.(DNA is complexed with histones).

8 0
2 years ago
What produces variable traits depending on environmental conditions
Mrac [35]
A chameleon is an answer
7 0
3 years ago
Plants lose water from their above ground surfaces in the process of transpiration. Most of this water is lost from stomata, mic
Karolina [17]

Answer:

E

Explanation:

thanks again for your help and support you in whatever way you can get a good night's sleep and I will talk to you later I

7 0
3 years ago
How do wetlands improve water quality in an ecosystem?
tankabanditka [31]
One of the most important benefits that wetlands provide is their capacity to maintain and improve water quality. When healthy, wetlands have a rich natural diversity of plants and animals. These can act as filtering systems, removing sediment, nutrients and pollutants from water.

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4 0
3 years ago
I need help ! i really don’t get it
Vaselesa [24]

Answer:

The presence of an additional chromosome

Explanation:

Look at "pair" 21. See how there are THREE chromosomes instead of TWO? Normally, there would only be two chromosomes in each pair but this karyotype shows a trisomy (see def. below) of the 21st pair. This was caused by a nondisjunction mutation of the 21st pair. The is also the karyotype of a person with Down's Syndrome.

Definition of Trisomy:

A condition of the presence of three chromosomes in a pair instead of two. This normally causes developmental irregularity.

5 0
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