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QveST [7]
3 years ago
14

_____ is work done to keep equipment in good working order.

Biology
1 answer:
monitta3 years ago
6 0

This question is incomplete; here is the complete question:

_____ is work done to keep equipment in good working order.

A. Defragmentation

B. Preventive maintenance

C. Virus protection

D. A maintenance schedule

The correct answer is B. Preventive maintenance

Explanation:

Maintenance refers to the processes done on machinery or equipment to preserve its proper functioning. Moreover, this maintenance is preventive if it is done to prevent equipment from breaking down or having any malfunctioning. Besides this, preventive maintenance is globally recommended because in this way equipment used at home or in business works properly. According to this, the correct answer is preventive maintenance.

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While mRNA strands are being created a sequence is sometimes miscopied. What will be the effect of this on the cell?
Alex Ar [27]

Answer:

If the sequence of mRNA is miscopied, it will change the sequence of amino acids of the protein. Consequently, the protein may become non-functional.

Explanation:

So the second one or the third one I'm not sure sorry <3

4 0
3 years ago
Figure 1 shows red blood cells that have been placed in isotonic, hypotonic, and hypertonic solutions. Osmotic pressure causes c
EleoNora [17]
A is hypertonic so water is leaving the cell going into the solution, the cell shrinks. B is isotonic so there is no net transfer of water. C is hypotonic so water is entering the cell from the solution, the cell expands and can rupture.
8 0
3 years ago
Which describes the process of fermentation?
xxMikexx [17]

Explanation:

<u>anaerobic process that restores NAD+ supply </u>

<u></u>

Within cells, aerobic respiration may not occur due to several factors:

  • - a lack of inorganic, final electron acceptors
  • -incomplete or lack of a complete electron transport system
  • -missing genes for enzymes within the Kreb's cycle

Thus, they utilize other means for the generation of energy in the form of ATP and to replenish NAD+ an oxidized form of NADH, the main electron carrier in glycolysis. Pyruvate is produced in the cytoplasm via glycolysis- it is also used as an electron acceptor in a process called fermentation.

Further Explanation:

overall: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate( through the process of glycolysis in the cytoplasm).

Oxidative phosphorylation describes a process in which the NADH and FADH2 made in previous steps of respiration process give up electrons in the electron transport chain these are converted it to their previous forms, NADH+ and FAD. Electrons continue to move down the chain the energy they release is used in pumping protons out of the matrix of the mitochondria.

This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP. At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water...

  • Glycolysis: occurs in the cytoplasm 2 molecules of ATP are used to cleave glucose into 2 pyruvates, 4 ATP and 2 electron carrying NADH molecules. (2 ATP are utilized for a net ATP of 2)
  • The Citric acid or Kreb's cycle: in the mitochondrial matrix- 6 molecules of CO2 are produced by combining oxygen and the carbon within pyruvate, 2 ATP oxygen molecules, 8 NADH and 2 FADH2.
  • The electron transport chain, ETC: in the inner mitochondrial membrane, 34 ATP, electrons combine with H+ split from 10 NADH, 4 FADH2, renewing the number of electron acceptors and 3 oxygen; this forms 6 H2O, 10 NAD+, 4 FAD.

Learn more about cellular life at brainly.com/question/11259903

Learn more about cellular respiration at brainly.com/question/11203046

#LearnWithBrainly  

6 0
4 years ago
A car travels 30 miles in 2 hours,what is its speed
Orlov [11]
15 mph; Divide 30 miles by 2 hours in order to find the unit rate. When dividing, you will get the quotient, 15, or 15 miles per hour.
6 0
3 years ago
Read 2 more answers
Cellular respiration is a process common to cells. Which statement best describes cellular respiration?
tankabanditka [31]

Answer:

B It occurs in animal cells, but not in plant cells. this is the answer

hope it helps :)

7 0
3 years ago
Read 2 more answers
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