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notsponge [240]
3 years ago
12

While testing amylase activity, John uses a buffer of pH 6 and substrate starch. He incubates them at 104ºF (40ºC). All the tube

s show glucose formation, except one, which had no starch solution. Why did this happen?
Biology
1 answer:
oksano4ka [1.4K]3 years ago
6 0
The enzyme doesn't work well at this temp or ph
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Who first came up with the idea of tragedy of the commons?
Arlecino [84]

Lloyd came up with the idea of Tragedy of the Commons

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3 years ago
The muscular system helps with ____ and the skeletal system helps with ____. Question 1 options: movement; oxygen exchange movem
Anna007 [38]

Answer:

The correct answer is movement; structure.

The muscular system helps with <u>movement</u> and the skeletal system helps with <u>structure</u>.

Explanation:

The human muscular system constitutes 40% of the total weight of our body and is made up of three types of muscles, which, together with different tendons and thanks to their contraction capacities, allow us to move. The muscular system and the function of the muscles allow the movement of our body and it is the one that works in tune with other systems of our body to guarantee normal general functioning..The skeletal system is the set of organs that support, shape, structure and protect the body. The skeleton is a dynamic structure, specifically the axial skeleton, it is to serve as a support or as a scaffold that supports the organs and structures of the body. This is how bones together with muscles work as a team to allow the mobility of the human body.

5 0
3 years ago
Acetic acid and ethanol react to form ethyl acetate and water, like this: (aq)(aq)(aq)(l) Imagine of are removed from a flask co
ehidna [41]

Answer:

Greater than zero, and equal to the rate of the reverse reaction

Explanation:

this is an incomplete question in the first place, i saw the complete format online hence the answer am giving here.

Before any C2H5CO2CH3 is or was removed, the system is said to be in equilibrium.

This means that the rate of consumption of reactants and rate of generation of products are greater than zero and are equal, that means that both the forward and backward reactions are occurs at these rate.

7 0
3 years ago
List the 4 “problems” of living on land that plants had to overcom
baherus [9]

Answer:

Light

Temperature

Humidity

Plant nutrition

Explanation:

5 0
2 years ago
According to the theory of endosymbiosis, the origin of chloroplasts probably involved: a. engulfing of small photosynthetic pro
DerKrebs [107]

Answer:

A. engulfing of small photosynthetic prokaryotes by larger cell

Explanation:

The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship.

Some Evidence for this is based on the following:

1. Chloroplasts are the same size as prokaryotic cells, divide by binary fission, and, like bacteria, have Fts proteins at their division plane.

2. The mitochondria are the same size as prokaryotic cells, divide by binary fission, and the mitochondria of some protists have Fts homologs at their division plane.

3. Mitochondria and chloroplasts have their own DNA that is circular, not linear.

4. Mitochondria and chloroplasts have their own ribosomes that have 30S and 50S subunits, not 40S and 60S.

5. Several more primitive eukaryotic microbes, such as Giardia and Trichomonas have a nuclear membrane but no mitochondria.

7 0
3 years ago
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