Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
|
Two organisms that are classified in the same fam-
ily would not necessarily be classified in the same (A) kingdom (B) order (C) phylum (D) class (E) genus |
(E) genus
|
|
|
Plasma B cells are essential in the human immune response because of their ability to
(A) produce antibodies that can clump bacteria or viruses together so that macrophages can ingest them (B) attach directly to infected cells and punc¬ture them with enzymes (C) cause antigen molecules, such as toxins, to settle out of the blood plasma (D) engulf pathogens that they encounter in the bloodstream (E) clot open wounds so that bacteria cannot invade the body |
(A) produce antibodies that can clump bacteria or viruses together so that macrophages can ingest them
|
|
|
The first vertebrates to live on land were the am¬phibians, characterized by their ability to
(A) lay eggs and by their rough, scaly skin (B) breathe through moist skin and walk on four limbs (C) lay hard-shelled eggs on land (D) mil quickly on land using muscular limbs (E) develop mammary glands for milk production |
(B) breathe through moist skin and walk on four limbs
|
|
|
Fossils of an ancient reptile called Lystrosaurus haye been found in Africa, India, and Antarctica. Which of the following best explains this distri¬bution?
(A) They were able to move between continents before the oceans filled. (B) The movement of India due to continental drift carried them from place to place. (C) These land areas were once next to each other and have since drifted apart. (D) They were able to migrate over frozen seas during Ice Ages. (E) Changes in climate forced them to migrate from place to place. |
(C) These land areas were once next to each other and have since drifted apart.
|
|
|
Gregor Mendel identified "factors" that could be passed down from parents to offspring and that resulted in the expression of certain characteris¬tics. Today, we call Mendel's "factors"
(A) linked genes. (B) alleles (C) genotypes (D) phenotypes (E) homologous chromosomes |
(B) alleles
|
