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arlik [135]
3 years ago
9

Evidence of a chemical change includes

Biology
2 answers:
adoni [48]3 years ago
8 0
Change in color is the answer
Alexeev081 [22]3 years ago
8 0

b) change in color.....

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What two layers make up skin? a. keratin and dermis c. epidermis and dermis b. epidermis and melanin d. melanin and keratin
levacccp [35]
Upper layer- epidermis
lower layer-dermis
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3 years ago
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Although there are a limited number of amino acids, many different types of proteins exist because the?
Yakvenalex [24]
The sequence and number of amino acids is different (each protein has a unique sequence and arrangement of amino acids).
4 0
3 years ago
What conclusions can we draw from the lab about photosynthesis and cellular
GuDViN [60]

Answer:

Carbon dioxide and oxygen are recycled through photosynthesis and cellular

respiration forever unless something interrupts.

Explanation:

Photosynthesis and cellular respiration are two distinct and opposite metabolical processes undergone by living cells. They are opposite processes because one utilizes the products of the other as reactants.

Photosynthesis is a unique process to autotrophic organisms like plants. It is the process whereby plants synthesize their food in form of organic molecules (glucose) by combining Carbondioxide (CO2) and water (H2O) in the presence of sunlight.

The overall equation of photosynthesis is as follows:

6CO2 + 6H2O ------> C6H12O6+ 6O2

On the other hand, cellular respiration is the process whereby living cells obtain energy (ATP) by breaking down food molecules (glucose) using oxygen to produce carbondioxide (CO2) and water as products. The overall equation is:

C6H12O6 + 602 -----> 6CO2 + 6H2O

Based on the lab experiments, it can be concluded that Carbon dioxide and oxygen are recycled through photosynthesis and cellular

respiration because photosynthesis recycles/reuses the products of cellular respiration, which are C02 and H2O while cellular respiration recycles/reuses the products of photosynthesis, which are C6H12O6 and O2. This process occurs naturally in the environment and will continue to do so unless something interupts.

Option B is incorrect because light energy from the sun powers photosynthesis while option C is incorrect because photosynthesis transforms light energy to chemical energy while cellular respiration transforms chemical energy to thermal energy.

7 0
3 years ago
It is usually easier to calculate an enzyme's reaction velocity from the rate of appearance of .............. rather than the ra
elena-14-01-66 [18.8K]

Answer:

It is usually easier to calculate an enzyme's reaction velocity from the rate of appearance of PRODUCT rather than the rate of disappearance of a SUBSTRATE. Enzyme activity is measured as an INITIAL reaction velocity, the velocity before much SUBSTRATE has been depleted and before much PRODUCT has been generated. It is easier to measure the appearance of a small amount of PRODUCT from a baseline of zero PRODUCT than to measure the disappearance of small amount of SUBSTRATE against a background of high concentration of SUBSTRATE.

7 0
3 years ago
In two or more complete sentences, describe an activity you perform that has an impact on climate change? Is it positive or nega
Phoenix [80]

Answer:

Burning of woods has a negative impact on the climate.

Explanation:

Burning of woods for heating has a negative impact on our climate because it releases carbondioxide gas which is a greenhouse gas that trapped the reflected solar radiation and leads to global warming. We have to used alternative methods for heating such as electric heater instead of burning of wood which produce no pollution and can fulfill the requirement of heating so from the above discussion we can say that the activity has a negative impact on the environment.

7 0
3 years ago
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