Meromelia(Malformed limbs): The critical period
is 20-36 days after fertilization or the first trimester when the
organs are just beginning to develop. Drugs such as thialides should be
avoided.<span>
Cleft Lip with/without Cleft Palate: Usage of drugs such as topiramate
and valproic acid, during the first 3 months of gestation increases the
risk of having a baby with this defect.
Enamel Hypoplasia(teeth enamel is hard but thin): The use of tetracyclines
can cause this, as well as yellow-to-brownish discoloration of the teeth.
It is important to avoid such drugs during the 2nd and 3rd trimesters.</span>
A, C & D
Usually as cells, and even organisms get larger, their surface area to volume ratio decreases. This is why it is important for cells to retain their relatively small size to keep a larger surface area to volume ratio.
Explanation:
A larger Surface area to volume ratio ensures that the cell can efecitnyl take up nutrients and excrete toxic metabolites. This ensures that the biochemical activities in the ell continue effectively to support the life process.
If cells were too large, it would take time for important substances like nutrients and oxygen to reach the center of the cell. On the other hand, toxic metabolites would accumulate in the cells because the rate at which they are eliminated is very low.
Learn More:
For more on surface area to volume ratio check out;
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Answer: Hello, A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time
Explanation: Hope this helps :D
Answer:
Sagittal Suture- the joint between the two parietal bones.
Coronal Suture- the joint between the frontal bone and the parietal bones.
Squamous Suture- the joint between the parietal and temporal bones.
Lambdoidal Suture- the joint between the parietal bones and the occipital bone sorry if wrong
Explanation:
Answer:
Cell Shape: Large surface area = Function: Absorption/metabolism increases
Explanation:
The large the surface area of a cell allows for more receptors to interact to increase the amount of metabolism that occurs within the cell. The example you provided, columnar and epithelial cells, are found in various locations throughout the body but are most notable found in the intestinal lining of our intestines. The shape of the columnar which is made up of epithelial cells is waved shaped to allow for more surface area within a given location. Consequently, leading to further absorption.