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Displaying 121-130 of 241 results.

What structure develops into only the fetus?

Posted 5 years ago by cannie247 in Biology 30 | 0 answers
#embryonic development 

Which of the following statements is NOT correct about the immunological incompatibility between mother and baby?
Select one:
If the baby is Rh+ and the mother is Rh–, it does not pose a problem as long as this is the mother’s first pregnancy.
The baby’s Rh+ blood will never get in contact with the mother’s Rh– blood during the pregnancy as the placenta does not allow fetal blood cells to mix with the maternal blood.
 When the mother has Rh– blood, anti-Rh antibody injection is given during her pregnancy to prevent any antibodies from forming.
 Rh– blood has no rhesus factor proteins and therefore will produce antibodies for the Rh factor when exposed to Rh+ blood.
 
What is the difference between in vitro fertilization (IVF)and artificial insemination?
Select one:
 During IVF, gametes are introduced into the womb, whereas during artificial insemination, a blastocyst is implanted on the uterus.
 Artificial insemination can be used during a surrogacy, whereas IVF cannot.
IVF includes giving the woman additional FSH and LH to induce superovulation, whereas artificial insemination involves a woman undergoing any hormonal treatment.
 IVF involves fertilization outside the body, whereas artificial insemination involves internal fertilization.

Posted 5 years ago by miyaomar in Biology 30 | 0 answers
#gametes #sperm #sensory pathway 

During the first trimester, hCG produced from the chorion maintains the corpus luteum. What is the purpose of maintaining the corpus luteum?
Select one:
 The corpus luteum ensures that the endometrium does not break down during the first trimester.
The corpus luteum supports the formation of the placenta.
The chorion forms the fetal part of the placenta, and the corpus luteum supports the maternal part of the placenta.
 The corpus luteum produces relaxin, which thickens the endometrium.
 
 
How does the human body ensure that another pregnancy does not occur during embryonic and fetal development?
Select one:
High levels of estrogen
 Low levels of oxytocin
Low levels of LH
 High levels of FSH

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#spinalcord #purpose of maintaining the corpus luteum #sensory pathway 

Which of the following statements does NOT correctly describe the similarities and differences between male and female reproductive systems?
Select one:
 Eggs and sperm can survive for 3 to 5 days in the Fallopian tubes.
\Millions of mature sperm are produced on a daily basis, whereas single mature ovum is released every 28 days.
 Eggs and sperm contain exactly half of the genetic material of a normal somatic cell. Many zygotes with an abnormal number of genetic material often do not successfully implant.
 Meiosis is completed after fertilization in eggs, whereas a mature sperm has completed meiosis prior to fertilization.
 
 
Which of the following statements correctly identifies the differences between spermicidal jelly and a condom?
Select one:
. Condoms prevent the physical transfer of most sexual secretions. Spermicidal jelly kills sperm, but allows fluid transfer.
Condoms are semipermeable membranes whereas spermicidal jelly does not form any barrier.
. Condoms contain an antibacterial coating while spermicidal jelly only kills sperm cells.
Condoms form a barrier to protect against sperm movement as well as viruses. Spermicidal jelly breaks down cell membranes of bacteria.

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#sexual #activity #std 

What happens to the embryo after week 8?
Select one:
All organ formation has completed, so the fetus begins to grow in size through mitosis.
Tissue and organ differentiation from the endoderm and mesoderm finalize at the end of the second trimester.
. Umbilical cord and placenta begins to form.
All other organs such as kidneys, bladder, liver, lungs, and spleen begin to form.
 
Between 1959 and 1961, thalidomide was prescribed to expectant mothers in Canada for morning sickness. Once it was determined that thalidomide was linked to miscarriages and birth defects, it was pulled from Canadian pharmacies in 1962. It is estimated that over 20 000 individuals worldwide were affected by thalidomide. There are approximately 100 thalidomide survivors in Canada who have been approved to receive compensation from the federal government. Which of the following over the counter and prescription medications have not been linked with birth defects or problems with pregnancy? (Some research may be required.)
Select one:
 Isotretinoin for acne
Valproic acid for epilepsy
. Amoxicillin as an antibiotic
Advil (ibuprofen)

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#advil #umbilical cord #hormones 

Which of the following statements clearly describes the difference between embryonic and fetal development?
Select one:
 Embryonic development begins during the tenth week of gestation, a time of morphogenesis.. Organs continue to grow and develop during embryonic development.
 Organs continue to grow and develop during fetal development.
Fetal development begins during the ninth month of gestation, a time of rapid growth.
 
Which description below explains how the hormones released in birth control pills causes natural ovulation to cease?
Select one:
 Birth control pills release progesterone. Progesterone feeds back to the pituitary gland, thereby inhibiting FSH and LH and in effect, stopping the ovarian and menstrual cycle.
 Birth control pills release estrogen. Estrogen feeds back to the posterior pituitary, causing an increase of LH and thereby ceasing the ovarian cycle.
Birth control pills release progesterone. Progesterone causes an increase in FSH, thereby increasing the production of follicles.
Birth control pills release estrogen. Estrogen controls the secondary sex characteristics of the female body.

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#estrogen #hormones #embryonic development 

Phenylthiocarbamide (PTC) is an organic compound that either tastes extremely bitter or is tasteless, depending on the genotype of the taster. The tasting allele is dominant over the non-tasting allele. Normal skin pigmentation is dominant over albinism. (It is important to note that this example of PTC tasting cannot be explained with simple genetics, but for the purpose of this question, assume that it can.) A normally-pigmented woman who cannot taste PTC has an albino father who can taste PTC. The woman married an albino man who can taste PTC and whose mother cannot taste PTC. For the married couple, 

correctly identify their genotypes, (1 mark) complete a Punnett square showing the expected offspring of the couple, and (1 mark) identify the genotypic and phenotypic ratios of their offspring (1 mark)

Posted 5 years ago by cannie247 in Biology 30 | 0 answers
#genetics and probability 

What can we, as a society or as individuals, do to protect our ecosystems and watersheds from endocrine disruptors? 

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#endocrine #disruptors #society 

Describe the possible economic impacts of the Zika virus and the STI. (2 marks) Marking Rubric: 

Point Value  2  1  0  Economic Impact  Explanation of the cost for required medical, learning, and/or home support is included.  Some explanation of the cost for required medical, learning, and/or home support is included.  Explanation of the cost for required medical, learning, and/or home support is missing. 

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#zika #help #economics 

Why do you think the Alberta government decided to provide HPV vaccine funding for boys, as well as girls, in Grade 5? (

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#sti #and why alberta health care insurance should cover this #hpv 

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