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natka813 [3]
3 years ago
11

What is the difference in the amino acid sequence between sickle cells vs. normal hemoglobin mrna molecules? how does this chang

e translation of the gene?
Biology
1 answer:
AURORKA [14]3 years ago
8 0
The hemoglobin holoenzyme (active enzyme) is a complex of an iron ion and 4 subunits- 2 hemoglobin alpha and two hemoglobin beta. People with sickle cell disease have mutated beta hemoglobins. The mutation is a single nucleotide exchange, that changes the 6th amino acid of  protein primary struture - a Glutamic acid into Valine. This one alteration changes the tree dimentional structure of hemoglobin beta so, that it forms lond fibres that disrupt the normal circular form of the red blood cells.
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Match the following. 1. the condition of having gametes similar in shape, but different in size gymnosperm 2. the condition of h
timurjin [86]

Answer:

The correct match is given below:

Explanation:

  1. The condition of having gametes similar in shape, but different in size – anisogametes.
  2. The condition of having anisogametes - anisogamy
  3. The part of the stamen of a flower that bears the pollen – anther
  4. An organ in simpler plants that produces sperm cells – antheridium
  5. An organ in lower vascular plants, gymnosperms, mosses, and liverworts which produces an egg cell - archegonium
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  7. An act of fertilization involving the transfer of cell contents to another cell; usually occurs in simpler organisms – conjugation
  8. A large gamete with stored food - Egg
  9. A long, whip-like structure extending from a cell used for locomotion-  Flagellum
  10. An organ of lower plants, some protists and some fungi that produces gametes - gametangium
  11. Gamete producing organs in animals – gonads
  12. Cone-bearing plant; often called evergreen – Gymnospers
  13. Incapable of independent movement - immotile  
  14. Gametes that are the same in size and shape - isogametes
  15. Capable of independent movement- motile

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What are the differences in the internal structures of the cells pictured to the right? Check all that apply. There are fewer st
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True or False: Only one species may be affected by human activity.
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Answer:

False

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Many species may be affected by human activity in several ways such as pollution, hunting, overfishing, etc.

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