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PilotLPTM [1.2K]
3 years ago
8

Explain the role of enzymes in living cells

Biology
1 answer:
xz_007 [3.2K]3 years ago
3 0
First, the basic function of an enzyme is to increase the rate of a reaction. Most cellular reactions occur about a million times faster than they would in the absence of an enzyme. Second, most enzymes act specifically with only one reactant (called a substrate) to produce products.
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Okay for this..it has 2 questions so please answer them and hopefully give the correct answer! Thank you
PtichkaEL [24]
For question 1:
Look at the graph. In the beginning we start out with a feed of 75% wheat and 25% corn. The weight of the pig is 40. Look at the rest of the graph. Each time they lessen the amount of wheat the pigs eat and add more corn, they get heavier. By the end, the pigs are fed a blend of 25% wheat and 75% corn and they weigh 61 pounds. The answer would be C.

6 0
3 years ago
Read 2 more answers
Which of the following behaviors allows a bird to maintain a constant body temperature in extremely hot weather?
patriot [66]
<span>d. All of the above

These behaviors;

Spreading wings
Flattening feathers
panting

are all evolutionary process to maintain body temperature. Birds are warm-blooded animals. Also known as </span><span>homeotherms, which is defined as having the constant body temperature. This is a vital function for the survival of the specie.
</span>
----

<span>c. are hollow
</span>
The bones of most birds are hollow in order for the weight of the birds to be light for them to fly. 
8 0
3 years ago
The substance dichlorophenyldimethylurea (DCMUDCMU) is an herbicide that inhibits photosynthesis by blocking electron transfer b
mario62 [17]

Answer:

No

Explanation:

During cyclic photophosphorylation, electrons are cycled continuously out of and back into the reaction center of PSI. It does not involve PSII and plastoquinone. During non cyclic photophosphorylation, the reaction center of plant photosystem II passes electrons to plastoquinone. The reduced plastoquinone carries electrons to the cytochrome b6f complex. Since PSII and plastoquinones are not included in cyclic photophosphorylation, dichlorophenyldimethylurea would not affect the process.  

5 0
3 years ago
how might a scientist a determine  whether trait sex-linked by observing the offspring of several genetic crosses
ASHA 777 [7]
They use Punnett squares to determine the sex traits or possibilities of having a boy or girl. They also determine the sex linked trait or the genes.
6 0
3 years ago
Hunting is a form of artificial selection. Defend or refute this statement based on the principles of artificial selection
shtirl [24]

Hunting IS NOT a form of artificial selection because it is not a form of breeding. Artificial selection refers to the intentional breeding of plants or animals. An example would be a thoroughbred racehorses, because they were selectively bred.

6 0
3 years ago
Read 2 more answers
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