B - Because an active cell can only work if it has a 3-Dimension structure.
Answer:
Ice is not an organic molecule.
Explanation:
Organic molecules are a specific type of molecule that contain at least one carbon atom that is attached to other atoms such as Hydrogen, oxygen.
In the given question lipid,carbohydrate and nucleic contain carbon atoms that are linked together with Hydrogen atoms, oxygen atom and nitrogen atom as a result they can be categorized as organic molecule.
on the other hand ice is the solid form of water(H2O) which itself is an inorganic molecule,from that point of view ice is not an organic molecule.
nuclear envelope contains a double membrane in order to protect the nucleus.
Answer:
B- A cleft chin is due to a dominant allele
Explanation:
A husband and wife both having the phenotype for cleft chin and producing an offspring without a cleft chin, indicates heterozygousity in their genotype.
With the heterozygous genotype however, they both expressed the phenotype for cleft chin, indicating that the allele for cleft chin is dominant over the allele coding for normal chin.
Since both parents are heterozygous for cleft lip, the sequence of genotype in their offspring will be:
- 25% chance of having homozygous cleft chin
- 50% chance of having heterozygous cleft chin
- 25% chance of having homozygous normal chin
Because of the dominance of the cleft chin allele, both homozygous and heterozygous forms of the cleft chin allele, will be expressed in the offspring and only the offspring homozygous for normal chin will not express this allele.
A change that produces one or more new substances is called a physical change.
true or<u> false</u>
