This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Presbyopia is characterized by ________. A) retinal detachment B) legal blindness C) ... (Read 122 times)

ts19998

  • Hero Member
  • *****
  • Posts: 531
on: Jun 27, 2018
Presbyopia is characterized by ________.
 
  A) retinal detachment
  B) legal blindness
  C) blepharoptosis
  D) loss of flexibility of the lens

Question 2

Fraternal twins occur when ________.
 
  A) a single fertilized ovum splits
  B) two ova are fertilized
  C) the father's sperm contains an X chromosome
  D) the father's sperm contains a Y chromosome


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

swimkari

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 27, 2018
Answer to Question 1

D
Explanation: A) Presbyopia involves the lens, not the retina.
B) Presbyopia is blurriness of vision, not legal blindness.
C) Presbyopia involves the lens, not the eyelid.
D) Correct Presby/o- means old age. The lens becomes less flexible in older persons.

Answer to Question 2

B
Explanation: A) This describes identical twins, not fraternal twins.
B) Correct Because two different ova are fertilized, fraternal twins can be two males, one male and one female, or two females.
C) The father's sperm contains either an X or Y chromosome, but this is not the cause of fraternal twins.
D) The father's sperm contains either an X or Y chromosome, but this is not the cause of fraternal twins.


ts19998

  • Member
  • Posts: 531
Reply 2 on: Jun 27, 2018
Excellent

cam1229

  • Member
  • Posts: 329
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Colour blindness. Colour blindness.
Terrestrial plants and animals can be characterized by analogous pathways for water gain and loss. Terrestrial plants and animals can be characterized by analogous pathways for water gain and loss.
An example of color blindness test. A person with red-green color blindness would not be able to dis An example of color blindness test. A person with red-green color blindness would not be able to dis
(A) Normal spongy bone. (B) Spongy bone with osteoporosis, which is characterized by a loss of bone (A) Normal spongy bone. (B) Spongy bone with osteoporosis, which is characterized by a loss of bone
Retinal detachment. Retinal detachment.
11-cis-retinal to all-trans-retinal 11-cis-retinal to all-trans-retinal
Video: Causes of Angina

For a complete list of videos, visit our video library