Answer:The principle of teratology that this addresses is - The amount of exposure to a teratogen influences its effect.
Explanation:
Couple of factors affects the effects of teratogen ranging from the timing at which the exposure took place,the nature of teratogen and how susceptible the mother's gene is to teratogen.
When the amount of teratogen is high,it poses a risk to Karen which can be foetal malformation or miscarriage.
Low to moderate consumption of Caffeine might not be harmful to an expectant mother like Karen,but when the degree of consumption is increased according to the principle of teratology, there is an increased risk of harm to the developing foetus and even sometimes to the mother.
Answer: an autotroph eating a heterotroph
Explanation:
Question is incomplete. Complete question has been attached.
Answer:
A) DNA polymerase is a directional enzyme that synthesizes leading and lagging strands during replication.
Explanation:
DNA polymerase synthesizes the new DNA strand from the template strands. Both the strands in a DNA molecule act as templates, however both of them have different orientation. It was observed that 3'-5' template DNA produced a new DNA strand continuously in one step. However, 5'-3' template produced new DNA strand in fragments which were joined together later. This observation gave the idea that DNA polymerase is a directional enzyme. It synthesizes DNA in 5'-3' direction so 3'-5' template gave rise to a continuous DNA segment. However, for 5'-3' template, DNA polymerase had to synthesize in opposite direction i.e. 3'-5' which was not possible directly. So the enzyme replicates it in short separate fragments which are later joined by DNA ligase.
Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another.
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, let's understand some terms
Activation energy is the minimum amount of energy required for a reaction to proceed. Under normal condition, when the activation energy is high, it takes longer for the reaction to proceed than when it is low.
The burning of marshmallow is an exothermic reaction as it involves the transfer of heat energy into the environment.
