BIOLOGY HIGH SCHOOL

The cardiovascular system consists ofa. the heart and coronary arteries.
b. the heart, blood vessels, and lymph vessels.
c. blood, blood vessels, and the heart.
d. blood, blood vessels, the heart, lymph, lymph vessels, and lymphatic tissues.

Answers

Answer 1
Answer: C) blood, blood vessels, and heart.

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Integumentary system

The hemoglobin of sickle cell anemia: A. is oxygen rich
B. differs from the normal protein by one amino acid
C. can carry less oxygen and more carbon dioxide
D. is normal

Answers

The hemoglobin of sickle cell anemia differs from the normal protein by one amino acid i.e., glutamic acid is replaced by valine.

What is sickle cell anemia?

  • Sickle cell disease is a blood ailment that is passed down through the generations.
  • It effects the hemoglobin, this is the protein in red blood cells that transports oxygen to the body's tissues.
  • As a result, sickle cell disease prevents oxygen from reaching the tissues.
  • Normal hemoglobin-containing red blood cells are smooth, disk-shaped, and flexible, like doughnuts without holes.

How is sickle cell anemia caused?

  • A mutation in the hemoglobin- gene on chromosome 11 causes sickle cell disease.
  • Hemoglobin is a protein that carries oxygen from the lungs to the rest of the body.
  • Normal hemoglobin (hemoglobin-A) red blood cells are smooth and spherical, and they glide through blood arteries.
  • It is produced by a point mutation in the B-chain of hemoglobin, where glutamic acid is replaced by valine at position 6.

learn more about sickle cell anemia here:

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The hemoglobin of a sickle cell anemia: C.

A sickle cell is when it runs out of oxygen and only carries CO2 which can cause many health problems in the body.

In the study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion. Which conclusion is that?

Answers

Answer:

Cancer is the genetic order than can be caused by different reasons but one of the main is "MUTATION IN GENES"

Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread to other parts of the body.
cancer cells lack contact inhibition meaning meaning that in normal cells when they come in to contact with other cells they stop reproducing only cancer cells do not. They just keep reproducing and growing destroying everything in their path. An example of this is a tumor.

Cone-bearing trees (like pines, spruce and fir) grow best in areas where winters are long and cold. Large mammals like moose, elk and bear also live and thrive in these cold areas known collectively as the ________________ biome. A) taiga
B) desert
C) temperate grassland
D) temperate deciduous forest

Answers

the answer is a) taiga 

Answer:

A) Taiga :)

Explanation:

What is the main energy molecule in the body?

Answers

ATP the energy is derived from the chemical bond energy in food particles. Which therefore they serve as food for cells

Frogs have internal and external structures to help them survive, grow, and reproduce. Name an internal and an external structure, an tell how these structures of the frog survive.

Answers

Answer:

Frogs have some important internal and external structures  that helps them to survive, grow and reproduce. Frog have almost similar internal anatomy to humans.

Frogs have the ability to respire through both lungs and skin. Skin is the external structure that helps them to respire in aquatic ecology.The skins helps to dissolves oxygen from the air and water and releases carbon-dioxide. Skin helps frogs to respire under water but if water do not have enough oxygen, frogs will drown.

An internal structure called liver is present in frog same as human beings. The liver releases chemical called bile that are utilized in digestion of fat and then emptied into the small intestine.

Hence, skin and liver are important for the survival of frog.

What prevents antibiotics from being effective against viruses?A. Viruses have a high rate of mutation.
B. Viruses have no RNA.
C. Viruses have no metabolism.
D. Viruses have a protein shell that protects them.

Answers

C) Viruses that have no metabolism prevents antibiotics from being effective against viruses. 
The correct answer is C. Viruses have no metabolism
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A developer wants to turn part of a local woodlot into a new housing development. A vernal pool exists in the part of the woodlot marked for development. How might the developer’s plan affect the salamanders that live in the woodlot? Student Answer: A The salamanders would have no water to drink. B The salamanders would have no place to mate and lay their eggs. The development would have no effect on the salamander population. C The salamanders would not survive at all if the developer built houses in the woodlot. I know its B but why would it be B?