Out of the 200500 million sperm cells that are released during an ejaculation, only ____ complete the short journey up the Fallopian tubes to where an egg is waiting to be fertilized.
a. half
b. a few thousand
c. a few hundred
d. a few hundred thousand
Question 2
In the study by Kobayashi-Winata and Power (1991), were there any differences in the childrearing techniques of middle-class parents from Japan and America?
a. In both cases, parents used high amounts of punishment.
b. Japanese parents were higher in control and lower in warmth.
c. American parents were low in control and low in warmth.
d. American parents relied on external punishments, such as sending a child to his/her room, whereas Japaneseparents used more verbal comments, explanations and reprimands.
Communication between mating yeast cells.
Emerged Fibroblast cells
Model for cleavage and polyadenylation of pre-mRNAs in mammalian cells
Switching of mating type in haploid yeast cells
cells
Light micrograph of cells in a strand of Chladophora