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2 years ago

Which statement correctly compares the number of chromosomes in a body cell to that in a sex cell of humans?

Chemistry

2 answers:

ad-work [718]2 years ago

6 0

The answer is C: "<span>A body cell has 46 chromosomes; a sex cell has 23"</span>

Leya [2.2K]2 years ago

3 0

Answer is: C. A body cell has 46 chromosomes; a sex cell has 23.

Chromosome is a DNA molecule with part or all of the genetic material of an organism.

Chromosomes in humans are divided into two types:

1) body chromosomes or autosomes.

2) sex chromosomes or allosomes.

When sex cells unite during fertilization, the haploid cells (23 chromosomes) become a diploid cell (46 chropmosomes).

Body cells have 23 pairs of chromosomes (22 pairs of autosomes and one pair of sex chromosomes), giving a total of 46 per cell.

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Which of the following correctly orders the layers of the atmosphere from lowest to highest?

aev [14]

The answer is a. troposphere, stratosphere, mesosphere, ionosphere

3 0

2 years ago

Read 2 more answers

A 32.5 g iron rod, initially at 22.4 ∘C, is submerged into an unknown mass of water at 63.0 ∘C, in an insulated container. The f

a_sh-v [17]

Answer:

$m_{H_2O}=39.0g$

Explanation:

Hello,

In this case, is possible to infer that the thermal equilibrium is governed by the following relationship:

$\Delta H_{iron}=-\Delta H_{H_2O}\\m_{iron}Cp_{iron}(T_{eq}-T_{iron})=-m_{H_2O}Cp_{H_2O}(T_{eq}-T_{H_2O})$

Thus, both iron's and water's heat capacities are: 0.444 and 4.18 J/g°C respectively, so one solves for the mass of water as shown below:

$m_{H_2O}=\frac{m_{iron}Cp_{iron}(T_{eq}-T_{iron})}{-Cp_{H_2O}(T_{eq}-T_{H_2O}} \\\\m_{H_2O}=\frac{32.5g*0.444\frac{J}{g^0C}*(59.7-22.4)^0C}{-4.18\frac{J}{g^0C}*(59.7-63.0)^0C} \\\\m_{H_2O}=39.0g$

Best regards.

8 0

2 years ago

How many of the following statements about silver acetate, AgCH3COO, are true? i) More AgCH3CoO(S) will dissolve if the pH of th

shutvik [7]

Answer:

All three statements are true

Explanation:

Solubility equilibrium of silver acetate:

$AgCH_{3}COO\rightleftharpoons Ag^{+}+CH_{3}COO^{-}$

If pH is increased then concentration of $H^{+}$ increases in solution resulting removal of $CH_{3}COO^{-}$ by forming $CH_{3}COOH$ . Hence, according to Le-chatelier principle, equilibrium will shift towards right. So more $AgCH_{3}COO$ will dissolve
If $AgNO_{3}$ is added then concentration of $Ag^{+}$ increases in solution resulting shifting of equilibrium towards left in accordance with Le-chatelier principle. So less $AgCH_{3}COO$ will dissolve
Insoluble precipitate of AgOH is formed by adding NaOH in solution resulting removal of $Ag^{+}$ . So, more $AgCH_{3}COO$ will dissolve

Hence all three statements are true

8 0

2 years ago

Crystals most often form in igneous and metamorphic rocks. According to the rock cycle, which processes and features do these ro

Zielflug [23.3K]

The features that are shared by the rocks include the melting and cooling of rocks.

It should be noted that a rock simply means a relatively hard naturally occurring mineral material.

Crystals most often form in igneous and metamorphic rocks. The processes that these rocks share that likely promote the formation of crystals is the melting and cooling of rocks.

Learn more about rocks on:

brainly.com/question/398139

4 0

1 year ago

What is the energy of a photon of violet light with a frequency of 7.57x10^14 s^-1?

Eddi Din [679]

Answer:

ΔE = 5.02 x 10⁻¹⁹ j

Explanation:

ΔE (photon) = h·f = (6.63 x 10⁻³⁴ j·s)(7.57 x 10¹⁴ s⁻¹) = 5.02 x 10⁻¹⁹ j

h = Planck's Constant = 6.63 x 10⁻³⁴ j·s

f = frequency (given) = 7.57 x 10¹⁴ s⁻¹

6 0

2 years ago