Secondary spermatocytes and secondary oocytes are
A) haploid.
B) diploid.
C) stem cells.
D) zygotes.
A) haploid.
You might also like to view...
In commensalism
A. the host and commensal cannot be separated and remain viable and the commensal is metabolically dependent on the host. B. the commensal is metabolically dependent on the host. C. the host and commensal can be separated and remain viable. D. the host provides some factor that the commensal cannot get otherwise.
Bile is made in the ____
a. gall bladder b. pancreas c. liver d. small intestine e. spleen
The rate of facilitated diffusion of a molecule across a membrane will increase as the concentration gradient of the molecule across the membrane increases to a certain point. Eventually, an increase in the concentration of the molecule will not cause any further increase in facilitated diffusion. Thus, there is a maximal rate of facilitated diffusion. This is because
A) the diffusion constant depends on the concentration gradient. B) the increased concentration gradient causes a situation far from equilibrium. C) there are a limited number of carrier proteins in the membrane. D) as the concentration gradient increases, molecules interfere with one another. E) facilitated diffusion requires ATP energy.
Answer the following questions true (T) or false (F)
1. Zoonotic diseases are spread from animals to humans. 2. The source of an infectious agent is the animate or inanimate habitat where the pathogen is naturally found. 3. The acute phase of an infectious disease, when the pathogen levels are the highest, is the most contagious stage of any pathogen.