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kvasek [131]
4 years ago
11

Water about 39 Fahrenheit is more dense then water at 32 Fahrenheit why would living organisms in the lake die if the water free

zing point was denser then 4
Biology
1 answer:
VashaNatasha [74]4 years ago
7 0
The freezing water would sink to the bottom and freeze the lake water from the bottom up.
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Which of the following distinguishing living things from nonliving things
LenKa [72]

Explanation:

Following factors distinguishing living things from nonliving things:

1- Living things can reproduce, while non-livings can not reproduce.

2- Living things show growth,while non-livings can not.

3- Living things can respire,while non-livings can not.

4- Living things can excrete,while non-livings can not.

5- Living things can show movement/response to stimulus,while non-livings can not.

8 0
3 years ago
Francis was recording plant heights for an experiment. Each time that she took a measurement, she wrote it down. Then, she measu
Shtirlitz [24]

Answer:

She most likely was trying to see how much the plant has grown over a certain amount of time each measurement was taken. (See more below.)

Explanation:

Once she measured how much the plant has grown, she compared it. She could have compared it by subtracting the newest height to the height taken before present measurement. A good experimental conclusion differs from an inference is by data. A good experimental conclusion has data that has been measured from testable concepts and has detailed data; therefore, reliable. If you were to inference the experiment, it would not be reliable data since it is a guess based on the experiments appearance. For example, if she were to make an inference on this experiment, she could have observed the plant when it was a sapling. When she had seen the sapling has grown overtime, she could say that it grew roughly 5 inches in height, and that would not be reliable since no further measurements was taken before or after the plant is/was growing.

6 0
3 years ago
Summarize given the large number of proteins is in the body
natali 33 [55]

Answer:

Enzymes' shapes are important because it determines the specific substrate it will act onto.

Explanation:

The shape of the enzymes are explained by two theories, which are Lock and Key Theory and Induced Fit Theory.

<h3>Lock and Key Theory </h3>

This was first coined by <em>Emil Fischer in 1894</em>. Just like how a key has a specific keyhole, <u>enzymes' active sites are supposed to act on specific substrates to produce a catalyzed effect</u>. Incorrectly shaped keys or enzymes will not fit into a lock (substrate) not assigned for it.

<h3>Induced Fit Theory</h3>

this theory was proposed for the substrates that do not qualify for the Lock-and-Key theory, or <u>enzymes that have more than one active sites</u>. It is said that the <u>substrate determines the final shape of the enzyme</u>, and that the<u> enzyme is somehow pliable</u>. The enzyme is then modified by the substrate to form an enzyme-substrate complex. This explains why two or more enzymes can catalyze a single substrate.

<h3>Additional notes:</h3>

For enzymes to work, they may need specific molecules.

A coenzyme may be <u>metal ions (iron, copper, magnesium)</u> or <u>organic molecules (Vitamins B2, B3, B8)</u> which attach to an enzyme to form a holoenzyme. An apoenzyme is an enzyme with only its protein part sans the cofactor.

8 0
4 years ago
Eons, eras, periods, and epochs, are all examples of ____________time.
Tju [1.3M]
Eons, Eras, Periods, and epochs are all examples of Units of time on the Geologic Time Scale.
4 0
3 years ago
Phospholipids make up most of the lipid present both in the body and in food.
s344n2d4d5 [400]
False. Phospholipids do not make up most of the lipid present both in the body and in food. 
8 0
3 years ago
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