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julia-pushkina [17]
2 years ago
10

What are two types of activators

Biology
2 answers:
AveGali [126]2 years ago
7 0
An enzyme lowers the activation energy. Only produce the enzyme as needed. Add something to an existing enzyme to make it work.
vodka [1.7K]2 years ago
3 0

Answer:

cofactors and coenzymes

..................

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Define groundwater, and list some anthropogenic (human) sources of groundwater pollution. Why do many scientists consider ground
joja [24]

Explanation:

Groundwater is the freshwater present below the earth's surface. It originates from the rain, ice, melting snow.

Some anthropogenic sources of groundwater pollution are

  • Aluminum.
  • Sulfur.
  • Arsenic.
  • Nitrates.
  • Fluoride.

Groundwater pollution has more problems than surface water pollution because groundwater is mostly hidden and it is very difficult to view, manage and monitor.

Groundwater holds its contamination and pollutants that cause pollution whereas surface water rinses their contamination and pollutants.

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2 years ago
Two students are planning an experiment that will test how planaria (aquatic flatworms) respond to different environments. They
Delicious77 [7]

Student 1’s methods would be more accurate, because the student would control more factors. Only one variable at a time (either temperature or acidity) would be tested on each group of worms. On the other hand, Student 2 is testing both factors on all the worms, which could make the results unclear.


4 0
2 years ago
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What two organs release secretions into the duodenum of the small intestine:?
Komok [63]
The liver and pancreas.
5 0
2 years ago
The following figure shows a plant cell immediately after it has been placed in distilled water (A) and a plant cell that has be
DENIUS [597]

Answer:

Plant cell A has lower water potential than cell B. True

Plant cell B is isotonic to the fluid in the beaker. True

Plant cell B's water potential increased due to an increase in solutes inside the cell. False

Plant cell B is at equilibrium with the fluid in the beaker. True

Plant cell A has higher water potential than cell B. False

Plant cell A is at equilibrium with the fluid in beaker. False

Explanation:

Plant cell A has lower water potential than cell B. True

This statement is true because the water potential of A is -2 bars while that of B is zero bars.

Plant cell B is isotonic to the fluid in the beaker. = True

Isotonic solutions have equal water potential. Since the water potential of distilled water is zero and that of plant cell B is zero as well, plant cell B is isotonic to the fluid in the beaker.

Plant cell B's water potential increased due to an increase in solutes inside the cell = False.

An increase in solute inside the cell doe not increase water potential but rather reduces it.

Plant cell B is at equilibrium with the fluid in the beaker. = True

Plant cell B is at equilibrium with the fluid in the beaker because its water potential is zero since the negative solute potential is counterbalanced by the positive pressure potential.

Plant cell A has higher water potential than cell B = False.

Plant cell A has a lower water potential of -2 bars while plant cell B has a higher water potential of zero.

Plant cell A is at equilibrium with the fluid in beaker. = False.

Plant cell A is not at equilibrium with the fluid in the beaker, rather due to its negative water potential, water will move into the cell.

4 0
2 years ago
Fill in the blanks to complete each sentence about dry climates.
Savatey [412]

Dry climates do not have sufficient precipitation during the most of the year.

Desert are located in the arid climate.

The semiarid climate is in a grassland, or steppe, region.

4 0
2 years ago
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