What is the primary limiting factor that determines why no female animal can produce a very large number of very large eggs?
A) Time is limited.
B) There are energy constraints.
C) Temperature constraints will prevent females from carrying too many eggs.
D) Male availability is limited.
E) There will be an increase in predation pressure if the females carry too many large eggs.
Answer: B
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Of the following combination of statements about protostomes and deuterostomes, which choice is correct?
A. Protostomes are animals in which the mouth develops from the blastopore, and the anus or anal pore develops from the second opening. Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. B. Protostomes are animals in which the anus develops from the blastopore, and the mouth develops from the second opening. Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. C. Protostomes are animals in which the mouth develops from the blastopore, and the anus or anal pore develops from the second opening. Deuterostomes are animals in which the mouth develops from the blastopore and the anus develops secondarily later in their development. D. Protostomes are animals in which the mouth or anus develops from the blastopore, depending on the species. Deuterostomes are animals in which the mouth and anus develops from the blastopore, depending on the species.
Which is not an example of aneuploidy?
A) monosomy B) tetraploidy C) trisomy D) nullisomy
Hemoglobin is a protein in white blood cells that destroys pathogens like bacteria
a. true b. false
The phenomenon of microbial antagonism can be explained by
a. certain normal biota directly kill other species by phagocytosis b. normal biota members change the chemical environment making it hostile to other species c. the immune system only recognizes certain species for destruction d. there is limited space for occupation in or on certain areas of the human body