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

Author Question: Which of the following decreases the ability of malaria species to infect RBCs? a. Duffy-positive ... (Read 33 times)

chads108

  • Hero Member
  • *****
  • Posts: 507
on: Jun 25, 2018
Which of the following decreases the ability of malaria species to infect RBCs?
 
  a. Duffy-positive phenotype
  b. Heterozygosity for hemoglobin S (Hb S)
  c. Hereditary spherocytosis
  d. Rh-negative genotype

Question 2

A patient has crescent- or banana-shaped malarial gametocytes. Which of the following is probably true regarding the species of malaria and its clinical course?
 
  a. Plasmodium malariae, which is benign and needs no treatment
  b. Plasmodium ovale, which is found mostly in Southern United States and is usually fatal
  c. Plasmodium falciparum, which is the most clinically serious
  d. Plasmodium vivax, which is the most clinically serious


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Hdosisshsbshs

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: B
Heterozygosity for Hb S decreases the ability of malaria species to infect RBCs so infected individuals do not develop severe complications. RBCs lacking the Duffy phenotype are not vulnerable to malaria. Neither the Rh-negative genotype nor hereditary spherocytosis provides protection from infection with malaria.

Answer to Question 2

ANS: C
Plasmodium falciparum has crescent- or banana-shaped gametocytes. This is the most clinically serious form of malaria.


chads108

  • Member
  • Posts: 507
Reply 2 on: Jun 25, 2018
Thanks for the timely response, appreciate it

kswal303

  • Member
  • Posts: 316
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

A comparison of selected species of bacteria and archaea. A comparison of selected species of bacteria and archaea.
Resource partitioning among five species of warblers feeding in North American spruce trees. Resource partitioning among five species of warblers feeding in North American spruce trees.
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Gram positive S. pyogenes bacteria in chains. Gram positive S. pyogenes bacteria in chains.
A patient’s cognitive ability depends on his or her psychologic status, which is influenced by ... A patient’s cognitive ability depends on his or her psychologic status, which is influenced by ...
Dolphin’s ability to understand an artificial language Dolphin’s ability to understand an artificial language
Video: Introduction to Macular Degeneration

For a complete list of videos, visit our video library