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Kazeer [188]
3 years ago
8

What is shown in the image? A cell with no nucleus is shown. prokaryote eukaryote chloroplast mitochondrion

Biology
2 answers:
Romashka [77]3 years ago
7 0

Answer:

if the image has no nucleus shown then it's a prokaryotic cell.....

Margaret [11]3 years ago
7 0
Prokaryote mutation cellllll
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• How did the National Research Act change the way research was conducted?
leonid [27]

Answer:

The National Research Act of 1974 set the stage for several important systems of checks and balances in clinical research. It led to the creation of the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research, as well as the Belmont Report and Institutional Review Boards (IRBs).

Hope This Helps!

7 0
3 years ago
Write a paragraph about why viruses are alive
padilas [110]
Well, to be fair, this is a bit of a tough question because it's in question by some of the leading microbiologists right now. 

But one argument for this is their ability to reproduce. Note that one of the leading arguments for something to be alive is that they are subject to evolution and hence natural selection: the statements for which argue that there has to be differentiation within a species (meaning there has to be different forms of each virus within a type of virus) and there has to be reproduction-- which is where the problem comes along (because viruses could only reproduce while in a host). So one argument that can be made that they are in-fact alive, is that they reproduce and is subject to evolution. 

Do know however that this is HIGHLY controversial-- and if your teacher asks it, it's most likely not a right-or-wrong answer

If he does do it that way, maybe you could show off your brainy-bio knowledge by explaining to him why it shouldn't be so! 
3 0
3 years ago
Amolecule of dna was found to contain 120 adenine and 120 guanine bases.how many nucleotides comprise this molecule of dna?
coldgirl [10]

Answer:

480 nucleotides comprise this molecule of dna

Explanation:

According to Chargaff rule,

  •        Adenine is paired with thymine
  •        Cytosine is paired with guanine

Given in the question

Adenine residue = 120

Cytosine residue = 120

So, [A] = [T]

i.e. [A =120] = [T=120]

again, [C] = [G]

i.e. [C=120] = [G=120]

hence, total number of nucleotides present

=> [A] + [T] + [C] + [G]

=> 120 + 120 +120 +120

=> 480.

3 0
3 years ago
What is asteroids..........................​
son4ous [18]

Answer:

A small rocky body orbiting the sun.

Explanation:

Large numbers of these, ranging in size from nearly 600 miles (1,000 km) across (Ceres) to dust particles, are found (as the asteroid belt ) especially between the orbits of Mars and Jupiter, though some have more eccentric orbits, and a few pass close to the earth or enter the atmosphere as meteors.

8 0
3 years ago
Which statement accurately describes tectonic plate movement? Tectonic plate movement can be prevented with planning. Tectonic p
ira [324]

Answer:

The correct answer is Tectonic plate movement is a long-term environmental change.

Explanation:

When tectonic plates in the earth started to move, this process helped the planet to evolve and to shape the continents as exist today.

Different investigation teams have discovered that plates move approximately 2.5 centimeters per year. This movement is the key to the evolution of life and the development of the planet. This slow process involves mountain formation, rocks exposure, and chemical reactions that could stabilize the temperature on the earth´s surface for millions of years. And this stable weather is essential for the evolution of life. Plates movement carries carbon inside and outside of the planet, regulating the amount of carbon dioxide in the atmosphere (greenhouse effect). In this way, it can regulate the temperature. This regulation influence in precipitations,  chemical reactions that involve carbon release and minerals such as calcium, the water flow, volcanic eruptions, among other events. Plates tectonic is also responsible for life, as weathering and mineralization of the rocks release elements and nutrients that are necessary for the life of different organisms.    

So, up to this point, we can say that tectonic plates movement can not be prevented with planning, it does cause environmental change by regulating temperature, and hence it affects organisms.

There are short term effects and long term effects provoked by tectonic plates movement. Earthquakes are examples of short term effects, while mountain formation, ocean formation and, clime regulation are examples of long term changes.

Plates tectonic movement is a very slow process, that might last many years. The Andes formation, for example, started approximately 200 years ago, and these mountains are still rising. The subduction process has not finished as the plates are still moving.  

5 0
3 years ago
Read 2 more answers
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