Which of the following is a negative regulator of the cell cycle?
a. cyclin
b. human growth hormone (HCG)
c. p53
d. cyclin-dependent kinase (Cdk)
c. p53
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The production of eggs in females is a coordinated process that involves multiple regions in the body generating and releasing hormones
Which of the following statements are true and which are false regarding hormones of the female reproductive system? ____ The release of FSH is preceded by neurons of the hypothalamus releasing acetylcholine. ____ The corpus luteum secretes both estradiol and progesterone. ____ The surge in LH is preceded by a surge in estradiol. ____ Failure of fertilization causes a decrease in progesterone and estradiol and signals the end of the follicular phase of the menstrual cycle. What will be an ideal response?
Which of the following statements regarding gonorrhea is incorrect?
A. Pelvic inflammatory disease (PID), epididymitis, and infertility are complications. B. It is a sexually transmitted infection. C. Females can have asymptomatic infections. D. A chancre-type lesion develops at the portal of entry. E. Symptoms include painful urination and discharge.
"Cole" refers to any of various plants belonging to the Cruciferae or mustard family, which include broccoli, cabbage, collard greens, and other familiar vegetables
The controlled breeding of cole crops to produce certain physical traits in those organisms is called A) artificial selection. B) natural selection. C) agricultural selection. D) physical selection.
When a parent herring gull arrives at the nest with food, a chick will orient to and peck at the red spot on the parent's bill. The parent will then regurgitate the food into the chick's open mouth and the chick swallows it. What is this set of behaviors an example of?
A. innate releasing mechanism B. sign stimulus C. taxis D. stimulus-response chain E. fixed action pattern