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zheka24 [161]
2 years ago
11

An organism that produces catalase enzyme is protected from the harmful effects of

Biology
1 answer:
Aleonysh [2.5K]2 years ago
7 0
Protected from the harmful effects of free radicals, often referred to as reactive oxygen species (ROS).
Hydrogen Peroxide (H2O2) is a by-product of metabolic reactions of cells that use oxygen (aerobic respiration) to produce energy from carbohydrates (food). The problem with H2O2 is that it can be toxic to cells, due to its free radical properties, as an ROS. Organisms protect themselves from this by using an enzyme called peroxidase, also known as cayalase.
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Stomach cells are moderately well adapted to the acidity and protein-digesting activities in the stomach by having: a) Stomach c
Tcecarenko [31]

Answer:

The correct answer will be option-B

Explanation:

The environment of the stomach is acidic in nature maintaining value less than seven as it kills the microbes and helps activate the pepsin to digest the proteins.

The acidic nature of the gastric juice does not affect the stomach as the mucosa layer of the stomach secretes mucous and the if the cells get affected then the cells are repaired by the process of mitosis taking in the epithelial cells.

Thus, Option-B is the correct answer.

5 0
2 years ago
During a biology lab practical, students were required to identify a metal by its density. All the metals were painted green so
den301095 [7]

Answer:

C) Re-do the measurements, several times, and take the average density before making a decision.

Explanation:

For the correct identification of the metal, weather its nickel or copper, Carl should repeat the experiment several times and take the average density before making the decision. It is important because it reduces the chance of error and ensure the data integrity.  The more the sample size is, lessen would be the error.  

8 0
2 years ago
Read 2 more answers
The surgical removal of a large tumor from dane's occipital lobe resulted in extensive loss of brain tissue. dane is most likely
a_sh-v [17]
The occipital lobe is responsible for vision. so Dane will most likely suffer vision loss
7 0
2 years ago
Read 2 more answers
The following DNA is being replicated and the origin of replication is in the middle of the sequence and marked with three stars
xxTIMURxx [149]

Answer:

5'GATCGTAA3'

5'ATTCTAGA3'

Explanation:

As requested in the question above, the primers were presented with 8 nucleotides, with the nitrogenous bases of the DNA, and in the 5'-3 'direction.

Primers are small fragments of DNA that are used by DNA polymerase to form new strands. The primes attach to pieces on the ribbon, through the complementarity of the nitrogenous bases, serving as a template for the DNA polymerase to create the new ribbon.

DNA polymerase uses primers at the origin of replication, and can follow the path from the right or from the left, depending on the primers used, for this reason, this question has two answers.

8 0
2 years ago
The development of the brain continues past childhood. For example, if a monkey pushes a lever with its finger several thousand
Readme [11.4K]

Answer:

The development of the brain continues past childhood. For example, if a monkey pushes a lever with its finger several thousand times a day, the Brain tissue that controls the finger changes as a result of the experience.

4 0
2 years ago
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