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snow_lady [41]
3 years ago
12

the --- of a star determines its temperature and luminosity. A. density. B. mass. C. location. D. width

Biology
2 answers:
sesenic [268]3 years ago
8 0

Answer:

Option B, Mass

Explanation:

The general relation that gives the relationship between the lumonisity of a star and its mass is

L \alphaM^{3}\\

Thus, suppose if the mass of any star is two times the mass of sun then its luminosity will be 100 times the luminosity of sun.

The general relation between luminosity and temperature is

L\alpha R^{2} T^{4} \\

Since luminosity is depended on mass, and temperature is dependent on luminosity , thus it can be said that temperature is also dependent on mass of a star.

Thus, option B is correct.

sergiy2304 [10]3 years ago
5 0
B. mass
stars support their weight by making more energy which means more luminosity.
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Kepler's first law demonstrates that each planet has an elliptical orbit of unique size and shape with the Sun at one focus.
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Answer:

true, Kepler's first law demonstrates that each planet has an elliptical orbit of unique size and shape with the Sun at one focus.

7 0
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Help me, please with this :)
WARRIOR [948]

Answer:

Please find the answer to the blank spaces in each statement of the attached image in CAPS.

1. All energy comes from the SUN

2. Plants, algae and some bacteria capture energy by PHOTOSYNTHESIS in their CHLOROPLAST.

3. Plants, animals, fungi, protists, and most bacteria release energy by RESPIRATION in their MITOCHONDRIA.

Note:

- Photosynthesis requires CARBON DIOXIDE (CO2) and WATER (H20) to make GLUCOSE (C6H12O6) and OXYGEN (02)

- Respiration requires GLUCOSE (C6H12O6) and OXYGEN (02) to make CARBON DIOXIDE (CO2) and WATER

Explanation:

The image in this diagram is depicting how energy flows from the ultimate source, which is the SUN to other living organisms. Plants, algae and some bacteria have the ability to capture energy from the SUN using pigments in their CHLOROPLAST in a process called PHOTOSYNTHESIS, which they use to synthesize their food. The process of photosynthesis requires CARBON DIOXIDE (CO2) and WATER (H20) to make GLUCOSE (C6H12O6) and OXYGEN (02) gas.

However, on the contrary, virtually all living organisms including: Plants, animals, fungi, protists, and most bacteria etc. release energy via an organelle called MITOCHONDRIA in a process called RESPIRATION. The process of respiration requires GLUCOSE (C6H12O6) and OXYGEN (02) to make CARBON DIOXIDE (CO2) and WATER.

6 0
2 years ago
Match the following terms and definitions. 1.breeding of individuals that have genes for two different characteristics codominan
Luden [163]
<span>Answers;
1.Breeding of individuals that have genes for two different characteristics; Dihybrid cross
2.A grid system used to predict possible combinations of genes due to random fertilization; Punnet square
3 A condition in which both alleles are dominant; Codominance
4.when more than two alternatives exist for a gene; multiple alleles
5.A condition in which neither pair of alleles is dominant or recessive, so the traits blend in the phenotype ;Incomplete dominance;

Explanation;
</span>Dihybrid cross;
<span>It involves the breeding of individuals that have genes for two different characteristics. It involves the cross of individuals that are both heterozygous for two different traits. For example two different traits in a pea plant; color and shape; for color we have; Y-allele for yellow seeds and y- allele for green seeds, For Shape trait; R-allele for round seeds and r-allele for wrinkled seeds. So the dihydbrid cross would be (RrYy </span>× RrYy). 
<span>
Punnet square;

</span><span>This a grid system or a square diagram that is used to predict possible combinations of genes due to random fertilization. It is used by biologists determine the probability of an offspring having a particular genotype. 
</span><span>The letters on the outside of a Punnett Square stand for the parent allele.
</span>
Codominance
;
<span>This is a condition in heterozygotes in which both members of an allelic pair are dominant and both contribute to the phenotype. 
A good example of codominance is the ABO blood group; A person with blood group AB, it means that both the A allele and B allele are equally expressed. 

Multiple alleles

</span><span>This is when more than two alternatives for a gene exist.
Examples of multiple allelism in human;The genes of the ABO blood group system. The human ABO system is controled by three alleles, namely; A-allele, B-allele and O-allele.

Incomplete dominance;
</span><span>This is condition in heterozygotes in which both members of an allelic pair are neither dominant nor recessive to other alleles, so the two traits blend in the phenotype of the individual. 
An example; is a snapdragon flower that is pink as a result of cross-pollination between a red flower and a white flower. Which means neither the white allele or the red allele are dominant. </span>
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Answer:

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A scientist develops a chemical that prevents golgi bodies from functioning. contrast the specific effects the chemical would ha
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The role of the Golgi body or Golgi apparatus is to package the proteins in vesicles and target it to their respective place of function. Example, the receptor proteins that are synthesised in the Endoplasmic Reticulum will be sent to the Golgi body for its packaging into the vesicles that bind and fuse with the cell membrane. The targeting is done by the special set of markers present on the secreted vesicle. All the eukaryotic cells have a Golgi apparatus. When chemical treatment is done to stop its functioning, the cell stops functioning and eventually dies due to the hampered targeting of proteins to the various organelle. On the other hand, prokaryotic cells lack Golgi body as the cell size is small enough to allow for the synthesised protein to move by diffusion to its target. Hence no effect will be seen when prokaryotic cells are treated with that chemical.

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