Answer:
LD-50: lethal dose 50%, dosage that causes death to 50% of the exposed population
ED-50: effective dose 50%, dosage that causes an effect in 50% of the observed subjects
TD-50: toxic dose 50%, dosage that is toxic to 50% of the observed subjects
These curves do not apply to individuals because it is hard to predict the dosage that will cause a response in an individual, and more practical to predict what percentage of a population will be affected by a certain dosage of a chemical.
Explanation:
A blue fish and a yellow fish mate and have green offspring. What type of inheritance is this an example of?
Which process occurs during the growth and development of a fertilized human egg?
(1) cell division
(2) natural selection
(3) germination
(4) evolution
Answer:
cell division
Explanation:
Answer:
option A
Explanation:
option A is the correct answer.
as for the growth and development of the fertilized egg zygote which is a single cell it divides and form new cells and became embryo and foetus later on .
hope this will be helpful to you.
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each codon codes for an
Answer:
An amino acid.
Explanation:
Each codon applies to an individual amino acid.
Answer:
Each codon corresponds to a single amino acid (or stop signal), and the full set of codons is called the genetic code. The genetic code includes 64 possible permutations, or combinations, of three-letter nucleotide sequences that can be made from the four nucleotides.
Explanation:
Population density is calculated by
a. dividing the number of organisms in a region by the land area
b. multiplying the number of organisms in a region by the land area
C. dividing the land area by the number of organisms in the region
d. by subtracting the land area from the number of organisms in a region
Answer:
A). Dividing the number of organisms in a region by the land area.
Explanation:
The formula for calculating population density PLUS example:
What percentage of the total incoming radiation to the Earth reaches the ground?
A. 20
B. 30
C. 40
D. 70
Answer:
A. 20
Explanation:
Truth is its actually 22.5 but including that you can just round it, 20 is the best answer.
Answer:
20
Explanation: