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Elden [556K]
3 years ago
14

What words are missing from the diagram

Biology
2 answers:
Helga [31]3 years ago
7 0

The answer is 3.

A is Chlorophyll because it is needed to catch ions from sunlight.

B is ATP because it is used to create the glucose afterwards.

telo118 [61]3 years ago
4 0

Answer:

The correct answer will be option-3

Explanation:

Photosynthesis reaction which takes place in plants which help the plant to form the energy molecules in the form of glucose.

The reaction takes place in two phases:light-independent reaction and  light-dependent reaction.

The light-dependent reaction takes place in the thylakoid membrane which converts the sunlight energy to chemical energy by trapping the photons of sunlight by chlorophyll.

The chlorophyll molecule traps the energy of sunlight and excites the electron which helps the production of the intermediates called ATP and NADPH. These intermediates are utilized during the light-independent reaction in the formation of the glucose molecules.

Thus, option-3 is the correct answer.

You might be interested in
3. Describe at least three types of medical interventions that can be used to treat and repair broken bones. Explain the theory
hjlf

Answer:

1. Casting

2. Open reduction and internal fixation

3. Open reduction and external fixation

Explanation:

Casting is the process of making use of plaster-of- Paris to cure a fracture.

Open reduction, and internal fixation can be described as a situation whereby surgery is used to repair the fracture-frequently, and involves the use of metal rods, screws or plates to repair the bone. These things remain in place, under the skin, after the surgery. This procedure is adopted when the complicated fractures are not able to be realigned (reduced) by casting.

Open reduction, and external fixation is known to involve surgery to repair the fracture, and placement of a external fixation device on the limb with the fracture. This device is an external frame which supports the bone and hold it in the correct position while it is healing.

5 0
3 years ago
What is the mass of an element with 15 protons, 13 electrons, and 11 neutrons?
RSB [31]

Answer:

B. 26amu

Explanation:

The nucleus of an atom in an element contains protons, electrons and neutrons. The proton number equals the electron number in a neutral atom. The proton number is also called the atomic number, denoted by Z.

The mass number also called Atomic mass unit (amu) in this case, of an element is the sum of the proton number and the neutron number in the atom of that element. The mass number is denoted by A.

Hence, A = Z + N

Where A = Mass number

Z = Proton (atomic number)

N = Neutron number

In this question, N is 11 while Z is 15

Hence, the mass number of the element in the question, in AMU, is 15 + 11 = 26amu.

8 0
3 years ago
What is the determining factor for the transcription of structural genes of the trp operon?
padilas [110]

The right answer is 3. the availability of tryptophan in the environment

The TRP operon regulation depends on the availability of the tryptophan molecule (it depends if the cell need tryptophan or already has it).

There are two modes of regulation of the trp operon: Suppression and Mitigation

*Repression

The synthesis of operon mRNA is controlled by a repressor that blocks transcription when bound by tryptophan, which acts as a co-repressor.

The repressor, a 108 aa homodimer (ie 2 apo-repressor), has helix-turn-helix domains that interact with inverted repeats at the major groove of the operator, thus allowing its fixation.

In the absence of trp, the repressor is inactive and does not attach to the operator. The RNA polymerase can bind to the promoter and transcribe the trp E, D, C, B, A structural genes.

In the presence of trp, the repressor changes conformation and becomes active, so it binds to the operator, preventing RNA polymerase from accessing the promoter so transcription will not occur.

* The Attenuation

This is a premature termination of transcription that is a function of Trp concentration. It takes place at a late moment of transcription while regulation by repression is done during the initiation.

1st Case: Low Trp Rate, Continuous Transcription, → Formation of the Anti-attenuator in the absence of trp, and therefore the synthesis of tryptophan is continued.

2nd case: High rate of trp, stop transcription, → Formation of the attenuator in the presence of trp. This one will attenuate the synthesis of tryptophan.

4 0
3 years ago
Assume that the mother's genotype is AZ/az, and the father's genotype is Az/aZ, and the recombination rate is 10%. What are the
attashe74 [19]

Answer:

0.45 from mom and 0.05 from dad.

Explanation:

The recombinant progeny might occur due to the crossing over at the time of meiosis in which the exchange of chromosomes occur in the homologous chromosomes of non sister chromatids.

The progeny receives half of their chromosome from the mother and half from the father. The mother 50% AZ and 50% az chromosomes respectively. The 10% recombination has occured due to which the mother chromosomes is reduce upto 45%. The recombinant  10% will be aZ and Az and has 5% frequency. Mom has the ability of az chromosomes is 0.45 %. The father has the genotype 50% Az and 50% aZ. The 10% recombination has occured due to which the father chromosomes is reduce upto 45%. The recombinant will be az and AZ with 5% frequency. So, father has az with 0.05 % probability.

Thus, the answer is 0.45 from mom and 0.05 from dad.

8 0
3 years ago
Explain why cell contents and their environment are likely to freeze under extremely cold temperatures
Mrrafil [7]

Answer:

Explanation:

A fall in temperature can also adversely affect cell and cell membranes. At low temperatures, the phospholipids' fatty acid tails are moving less and stiffer. This reduces the membrane's overall fluidity as well as reduces its permeability and perhaps limits the entry into the cells of vital chemicals like oxygen and glucose. Also, low temperatures can impede cell development by preventing cell size expansion.

In severe cases, such long term exposure to sub-freezing temperatures, fluid in the cell can start solidifying and can form crystals that breach the membrane and destroy the cell.

5 0
3 years ago
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