One characteristic used to place organisms into kingdoms is blank

Four students provide their teacher with an explanation of why photosynthesis is considered a chemical change. Luke: Photosynthe

kenny6666 [7]

Answer:

The best explanation was provided by the student Tara who said: "Through photosynthesis, the CO2 and water are changed into new substance, glucose, therefore it is considered a chemical change".

Explanation:

A chemical change is one which is not easily reversible and which results in the formation of new subsatances.

For example, in photosynthesis,a new substance, glucose is formed from the original substansubstances, carbon dioxide and water. Also, the reverse process of the formation of carbon dioxide and water from glucose is not easily obtained in plants.

From explanations provided by the students :

Luke does not give any explanation of the process but only an observation

Jackie's explanation does not state the main reason why a chemical change differs from a physical one.

Tara, gives the best explanation as the reason why a change that occcured is a chemical change is clearly stated.

Skyler does not state the main reason why photosynthesismis a chemical change as well, because even physical changes like evaporation of water involves solar energy.

6 0

3 years ago

Intestinal virome changes precede autoimmunity in type i diabetes-susceptible children. 2017. proc natl acad sci u s

AlekseyPX

Oof that's hard. Did you spell it correctly?

6 0

3 years ago

. In this example, red flower coloring is dominant to white, and your population of 200 plants has 150 plants with red flowers.

AnnyKZ [126]

Answer:

a) The allele frequencies are - $p= 0.8660\\q= 0.134$

b) Genotype frequencies for this population- $p^2=0.75, q^2= 0.0179, 2pq = 0.2321$

Explanation:

Given ,

Red color of flower is dominant to white color flower

Let "R" represents allele for red color and "r" represents allele for white color

out of $200$ flower, $150$ are red flowers.

So the frequency of red flowers with genotype "RR" is equal to

$p^{2} = \frac{150}{200} \\p^{2} =0.75$

As per hardy Weinberg's I equilibrium equation -

$p+q=1\\p=\sqrt{p^2} \\p=\sqrt{0.75} \\p= 0.8660\\q= 1-p\\q= 1-0.8660\\q = 0.134$

a) The allele frequencies are - $p= 0.8660\\q= 0.134$

Frequency of genotype "rr" i.e homozygous recessive white flower is

$q^{2} \\0.134^2\\q^2 = 0.0179\\$

Substituting the values of $p^2$ and $q^2$ , in below equation, we get -

$p^2+2pq+q^2=1\\2pq= 1-p^2-q^2\\2pq= 1-0.75-0.0179\\2pq=0.2321$

b) Genotype frequencies for this population- $p^2=0.75, q^2= 0.0179, 2pq = 0.2321$

8 0

3 years ago

In some jacana species, males take care of the eggs and young, and females compete among themselves for territories that contain

Brut [27]

Answer:

A

Explanation:

3 0

3 years ago

Glucose is absorbed by __________ into the intestinal epithelial cells.

julsineya [31]

Glucose is absorbed by Na+/glucose symporter into the intestinal epithelial cells.
<span>
Symporter is located on the apical membrane of the intestinal epithelial cell and it <span>is used for uptake of glucose from the intestinal lumen into the cell (against the concentration gradient). One glucose molecule and two Na+ enter the cell via symporter. Na+ concentration gradient and the membrane potential (generated from the Na+/K+ ATPase in the basolateral membrane) enable the function of the symporter. Glucose leaves the cell via facilitated diffusion on the basolateral membrane of the intestinal epithelial cell and goes into the blood.</span></span>

7 0

3 years ago