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Shkiper50
2 months ago
9

We can be sure that a mole of table sugar and a mole of vitamin C are equal in their

Biology
1 answer:
garik1379 [2K]2 months ago
6 0

Answer:

The correct choice is d, that is, the number of molecules.

Explanation:

A mole is defined as the mass of substance divided by its molecular mass. A mole of table sugar and a mole of vitamin C do not have the same mass. Since volume corresponds directly to mass, differences in mass imply differences in volume as well.

Vitamin C and sugar are compounds consisting of different elements combined in specific molecular ratios. Consequently, they differ in atomic composition, mass, and volume.

One mole always contains 6.023 × 1023 molecules (Avogadro's number), which is the same for any substance. Therefore, one mole of vitamin C and one mole of table sugar have an identical number of molecules.

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Grazing cows disturb the grass and cause insects to fly around the cows as they eat. In turn, birds swoop in and eat the insects
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I believe this is <span>Commensalism since the bird gains a benefit while the cow is neither helped nor harmed.</span><span />
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1 month ago
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Classify the following characteristics depending on if they describe events occurring in mitosis, meiosis I, or meiosis II.
enyata [2506]

Answer:

Mitosis involves:

Resulting in two genetically identical

diploid nuclei

A diploid quantity of sister

chromatids align at the spindle

equator during metaphase

Meiosis I entails:

Resulting in two genetically diverse

haploid nuclei

Homologous chromosomes align

at the spindle equator during

metaphase

Homologous chromosomes pair

during prophase

Crossing-over takes place during

synapsis

Meiosis II involves:

Leading to four genetically diverse

haploid nuclei

A haploid amount of homologous

chromosomes align at the spindle

equator during metaphase

Explanation:

Mitosis is a cellular division process that generates two daughter cells identical to the parent cell. In this process, the chromosome count of the parent cell is preserved in the resulting daughter cells, meaning a diploid cell (2n) divides to form two diploid (2n) daughter cells. Sister chromatids (duplicated chromosomes) are involved at various stages of mitosis, i.e., during Metaphase, diploid sister chromatids align along the cell's equator, and during Anaphase, these sister chromatids are separated and moved to opposite poles.

On the contrary, meiosis is a type of cell division that produces daughter cells with half the chromosome number. Since the count is halved, meiosis occurs in two phases: Meiosis I and II.

Meiosis I yields two daughter cells genetically different from each other, with a reduced chromosome number (from diploid (2n) to haploid (n)). In Meiosis I, homologous chromosomes (similar but not identical chromosomes obtained from parents) pair to form a TETRAD during Prophase, allowing chromosomal segments to be exchanged between non-sister chromatids through CROSSING-OVER. This process generates genetic variability among daughter cells in comparison to the parent cell. Homologous chromosomes also align at the cell's equator during Metaphase and subsequently separate during Anaphase.

Meiosis II, on the other hand, divides the two daughter cells from meiosis I into four genetically distinct daughter cells. With the chromosome number previously reduced from diploid (2n) to haploid (n) in Meiosis I when homologous chromosomes split, haploid sister chromatids are then present and involved during the stages of meiosis II, where they align at the equatorial plane during Metaphase and ultimately separate in Anaphase.

5 0
17 days ago
Which are characteristics of the integumentary system? Select two options. Skin’s outer layer has living cells. Hair helps regul
s2008m [2378]

Answer: The integumentary system includes the skin, hair, nails, glands, and nerves. Its primary role is serving as a protective barrier against external elements. Additionally, it aids in maintaining body fluids, defending against diseases, disposing of waste, and controlling body temperature.

the correct responses are the first and second options

Explanation:

4 0
25 days ago
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In 3-5 sentences, describe the human respiratory system and its functions.
s2008m [2378]

Answer:

The respiratory system is comprised of specialized organs and structures for gas exchange in both animals and plants. The structure and function of this system differ significantly based on the organism's size, habitat, and evolutionary background. In terrestrial animals, the respiratory surfaces are typically the linings of the lungs. In mammals and reptiles, gas exchange occurs within millions of tiny air sacs known as alveoli, while birds have atria for this process. These tiny air sacs boast an extensive blood supply, ensuring air comes into close proximity with the bloodstream. They connect to the outer environment through airways or hollow tubes, with the trachea being the largest that divides in the chest into two primary bronchi. These then branch further into successively narrower secondary and tertiary bronchi, eventually leading to numerous smaller tubes called bronchioles. In birds, these are referred to as parabronchi. The air needs to be drawn into the alveoli or atria from the outside through the act of breathing, which involves respiratory muscles.

Explanation:

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2 months ago
Use the Artificial Selection Interactive to increase the average flowering head size of the sunflowers and answer the questions.
Rainbow [2354]

Answer:

The correct answer is -

a. - as the distribution of the phenotype diminishes

b. -cross sunflowers exhibiting the greatest phenotypic variance

Explanation:

Artificial selection refers to the practice of breeding plants or animals for particular desired traits by consciously choosing which individuals reproduce.

-Variance indicates how individual traits differ from the average characteristics of the species or how they deviate from the mean, demonstrating the degree of measurement differences.

-If the distribution remains unchanged, variance indicates no variation. However, if the spread indicates a range change in measurements, the variance will also change.

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