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3 years ago

Resistant bacteria cells illustrate what characteristics of life?

1 answer:

4 0

I believe the answer is adaptation through evolution. Genetic diversity in populations such as bacteria, allow for new traits to be passed along during reproduction. For example, you use hand sanitizer on your hands. The hand sanitizer kills most of the germs, but a few survive and live to reproduce, passing on their immunity to certain chemicals found in the hand sanitizer. Hope this helps!

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Which of these is heated by radiation? A. An ice cube melts while you hold it in your hand. B. Hot soup rises to the top of the

blondinia [14]

Answer:

Answer is option D.

The sun's energy is transferred through the vacuum of space to Earth by radiation.

Explanation:

The three forms of heat transfer are conduction, convection and radiation. The process of heat transfer between two solid objects in contact with one another due to a temperature difference is known as conduction. An ice cube melts while you hold it in your hand, is an example of conduction. Here, the heat energy from the hand is transferred to the ice cube and the ice melts.

Convection is the heat transfer occurs in moving materials (liquid or gas) due to the temperature difference between two regions. Hot soup rises to the top of the bowl, while cooler soup sinks to the bottom is an example of convection. The hot soup is less dense than cold soup, so it rises to the top and the cold soup at the top sinks to the bottom.

Radiation is a form of heat transfer where the heat energy is transferred through electromagnetic waves like infrared, UV rays etc. The sun's energy is transferred through the vacuum of space to Earth by radiation. Heat energy is transferred through vacuum by infrared radiation emitted by the Sun. The Earth absorbs it and turns the energy into heat.

5 0

3 years ago

Can someone please help me with this table?

ella [17]

Explanation:

overall: 3 CO2 + 6 NADPH + 5 H2O + 9 ATP → glyceraldehyde-3-phosphate (G3P) + 2 H+ + 6 NADP+ + 9 ADP + 8 Pi (Pi = inorganic phosphate)

CO2

An ubiquitous gas, and inorganic source of carbon. It is obtained from the atmosphere and fixed in the process photosynthesis, to an organic form by the enzyme RuBisCO. This forms carbohydrates, large energy storage compounds. Carbohydrates molecules that supply energy and provide support; they consist of mainly sugars or starches in long chains and rings to form monosaccharide monomers.

RuBP

Ribulose bisphosphate, RuBP an organic substance, In the Calvin cylcle it is are reduced and carbon is fixed from an inorganic CO2 to an organic form by the enzyme RuBisCO. With every molecule of CO2 fixed, 2 molecules of 3-phosphoglyceric acid are produced. Since two molecules of G3P are made per revolution, 3 turns make 6 G3Ps; 5 of these are used to regenerate RuBP for further fixation.

ATP

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. The energy produced in the form of ATP is used for other reactions involved in growth and development

NADPH

An enzymatic cofactor; it is reduced by water to the molecule NADP to NADPH by providing H+ ions. NADP and NADPH are integral to the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.

G3P

G3P (glyeraldehyde 3-phosphate).

NADPH and ATP facilitate the addition of electrons to or reduction of 6 molecules of 3PGA to 6 molecules of G3P. A molecule of G3P, goes to the cytoplasm from the Calvin cycle, to form other complex molecules. Fixing sufficient carbon for this G3P export requires 3 revolutions of the cycle. Since two molecules of G3P are made per revolution, 3 turns make 6 G3Ps; 5 of these are used to regenerate RuBP for further fixation.

Glucose

Inclusive of monosaccharides, disaccharides and polysaccharides (which describes the type of bonding and the degree of complexity of the polymers), the basic makeup of carbohydrates comprises C, H, O -with many polar OH groups

Glucose is the favored source of carbon (over others like xylose) for many organisms as it can be immediately processed for energy generation in cellular metabolic processes like respiration. This energy produced in the form of ATP is used for other reactions involved in growth and development. These include the urea and citric acid cycle where all amino acids (except eight) are produced as reaction byproducts.

<u>Further explanation:</u>

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent.

Water supplies the chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II. Additionally, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions. NADP and NADPH are integral to the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.

During the initial stage of the Calvin cycle, three molecules of ribulose bisphosphate, RuBP are reduced and carbon is fixed from an inorganic CO2 to an organic form by the enzyme RuBisCO. With every molecule of CO2 fixed, 2 molecules of 3-phosphoglyceric acid are produced. 3-PGA is a 3 carbon molecule with a phosphate attached. ...with each revolution of the cycle, a molecule of RuBP and one CO2 form 3 molecules of 3-PGA
Next, NADPH and ATP facilitate the addition of electrons to or reduction of 6 molecules of 3PGA to 6 molecules of G3P (glyeraldehyde 3-phosphate). The process uses 6 molecules of ATP and 6 of NADPH, after which the conversion of NADPH and ATP to ADP and NADP+ occur; these are returned to the light dependent reactions.
A molecule of G3P, goes to the cytoplasm from this cycle, to form other complex molecules. Fixing sufficient carbon for this G3P export requires 3 revolutions of the cycle. Since two molecules of G3P are made per revolution, 3 turns make 6 G3Ps; 5 of these are used to regenerate RuBP for further fixation.

Learn more about Photosynthesis at brainly.com/question/4216541

Learn more about cellular life at brainly.com/question/11259903

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2 years ago

Which layer of a leaf is where photosynthesis occurs the most ?

Georgia [21]

<h2>Answer:</h2>

<h2>Mesophlly</h2>

1: Structure of a leaf (cross-section): Photosynthesis takes place in the mesophyll. The palisade layer contains most of the chloroplast and principal region in which photosynthesis is carried out.

4 0

2 years ago

Read "What Emissions and Byproducts Are Produced from Burning Coal?" Why is the presence of mercury in water of great concern to

Degger [83]

1 - The most common emission and byproducts that are generated by burning coal are carbon dioxide, nitrogen oxides and dioxides and CCPs in genearl (coal combustion products).

2 - Mercury is a heavy liquid metal with some toxical properties. When ingested (most commonly trough water) can be fatal [for further info search Mercury Poisoning]. Something I should also point out is that most of the contaminated water sources are residual waters.

Hope it helped,

Happy homework/ study/ exam!

8 0

2 years ago

What types of rocks were used to construct the time scale?

Makovka662 [10]

Answer:

Sedimentary rocks were used to construct the time scale.

Hope it will help :)

3 0

2 years ago