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stepan [7]
3 years ago
7

What are two strengths and two weaknesses of your model?

Biology
1 answer:
alexdok [17]3 years ago
5 0

Answer:

strength: it provides raw material for plants and major component of food.

weaknesses: it increases earth's temperature and change the habitat.

Explanation:

The diagram shows the carbon cycle which is important cycle present on the earth. This carbon is present in carbondioxide form which is used as a raw material by plants in order to make their own food. This carbon is also present in different organic compounds. When its concentration increases in the atmosphere, the temperature of the atmosphere increases and many areas are not suitable to live for many plants and animals.

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Pressure is a force defined as?
KiRa [710]
The answer is D. a push the acts over a certain area.
4 0
3 years ago
Put these steps in the order in which they occur in light-dependent reactions. Electrons are transferred from photosystem II to
Tamiku [17]

Explanation:

  1. Light energy is absorbed and transferred to the reaction center.
  2. A water molecule is split.
  3. Electrons are transferred from photosystem II to photosystem I.
  4. ATP is synthesized from ADP and inorganic phosphate.

Further Explanation:

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. This occurs in the thykaloids, where pigment molecules like chlorophyll reside.

The chloroplast is a membrane bound organelle found in plants. It contains several invaginations of  a plasma membrane called the thylakoid membrane. This contains chlorophyll pigments, in stacks called granum, while the internal spaces of the organelle are called the lumen. Liquid surrounds the granum, forming the stroma.

During the light reaction:

  • Light is absorbed by pigments in phosystem II (PSII). This energy is transferred among pigments til it gets to the reaction center, and is transferred to P680; this promotes an electron to a higher energy level where it then goes to an acceptor molecule.
  • 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.
  • the electron moves down an electron transport chain (ti PS I)where it experiences continuous energy loss. This energy fuels the pumping of H+ from the stroma to thykaloid, leading to the formation of a gradient. The H+ move along their gradient and cross through ATP synthase, into the the stroma.
  • ATP synthase converts ADP and Pi to the energy storage molecule  ATP.
  • The electron gets to photosystem I where it  goes to pigments at P700. It absorbs light energy, the electron is promoted to a higher energy level, and passed to an electron acceptor. This leaves a space for another electron which is then replaced by one from photosystem II.
  • in the ETC,  the molecule NADP is reduced 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.

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

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

#LearnWithBrainly

5 0
3 years ago
Which of the following is homozygous dominant? a AA b Aa c aa
GarryVolchara [31]

Answer: a). AA

Explanation: Every trait is controlled by at least a pair of gene. Genes have different forms known as alleles. Alleles can be dominant or recessive. A dominant allele expresses itself in the presence of a recessive allele and masks the effect of a recessive allele. A recessive allele cannot express itself in the presence of a dominant allele and it's effect is masked by a dominant allele. Dominant alleles are usually written in upper cases such as A, T, while recessive alleles are usually written in lower cases such as a, t. The two alleles that determines a trait is called a genotype. A genotype can be homozygous if the two alleles are identical such as in AA or aa

and can be heterozygous if the two alleles are not identical such as in Aa, Tt.

6 0
3 years ago
Water is considered a _______ resource.
Tju [1.3M]

Answers/ Explanations:

- Water is considered a <u>'Natural'</u> resource (Fresh water is also considered a <u>'limited'</u> resource.

- Oil, coal, and natural gas are considered <u>'Non-renewable'</u> resources.

- <u>'Chemical'</u> energy is able to be replaced within the ecosystem for human use.

- A farmer who wants to produce the best crop yield will use '<u>Precision Farming.'</u>

- When a pollutant increases in concentration at higher levels of the trophic level, <u>'Biomagnification'</u> can harm organisms at the highest levels.

4 0
3 years ago
Read 2 more answers
What are the three types of symbiotic relationships? with definitions please
Licemer1 [7]

Answer:

The three types of symbiotic relationships are mutualism, parasitism, and commensalism. In mutualism, both organisms gain something, in parasitism, one organism gains and the other loses, and in commensalism, one gains and the other doesn't gain or lose

5 0
3 years ago
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