Dermis and epidermis
Epidermis help us to protect the inner organs and also the dermis
Tough one would have been expressing another way?
Silicates<span> are </span>minerals<span> that </span>contain silicon<span> atoms bonded to </span>oxygen<span> atoms. The basic building block for all </span>silicate minerals<span> is called a tetrahedron, where one</span>silicon<span> atom is bonded to 4 </span>oxygen<span> atoms. </span>Silicate minerals<span> also often </span>contain<span> other </span>elements<span>, such as calcium, iron, and magnesium.</span>
Well, first off the spongy mesophyll does have some chloroplasts, however they are located quite far from the surface of the leaf where most of the chloroplasts are. Therefore they don't get much light and don't contribute a lot to photosynthesis in the leaf. So why should the leaf waste the energy in making chloroplasts if there is not enough light to make them all efficient enough at photosynthesis?
Answer:
these statements are true
B) Insertions or deletions of single base-pairs within a protein coding sequence probably change the amino acid sequence
D) Missense mutations always change the amino acid sequence encoded by a gene
E) Nucleotide substitutions outside of the coding sequence can affect the expression of a gene.
Explanation:
B) insertion or deletion of nucleotide in coding region of DNA can change the amino acid sequence encoded.
D) missense mutation means that the change in nucleotide sequence resulting in change in amino acid sequence encoded by gene.
E) A mutation may alter the promoter of a gene, thereby affecting the rate of transcription.
