15
Each one of those letters represents a nucleotide. So to find out how many nucleotides are in the gene, just count them
However, keep in mind that this only represents 1/2 strands that make up DNA. If you are supposed to include the other strand, simply double 15, and there would be 30 nucleotides total. However, only 1 strand is actually required in order for protein synthesis to work, so I think it's just 15.
Question 1.
Detrital or Classic are 2 rocks that weather and become sandstone.
Question 2.
Metamorphic and Ingenious Rock is called a Migmatite.
Question 3.
There are three types of rocks in this one. Rhyolite, Pumice, and Basalt.
Question 4.
Energy and Heat from the Sun cause the Matter to start cycling and the Process of Wheatheing Begins.
Question 5.
The Earth's internal heat produces things such as melting, crystallization, and deformations to some rocks.
(Here are the answers I know and managed to gather over some time hope you get it all correct even if I'm wrong in some good luck and take care)
Answer:
4. B cells become activated by interacting with helper T cells.
1. B cells display antigens in MHC class II receptors on the cell surface.
2. Antibodies released by plasma cells bind to the antigen so they will be destroyed by other cells of the immune system.
3.B cells rearrange their DNA to create a unique B-cell receptor.
5. B cells undergo clonal expansion.
6. B cells digest antigens that bind to the antibodies on their surface.
Explanation:
B-cells get activated by interacting with helper T cells when they bind to the antigen to receptors i.e (MHC class II receptors on the cell surface) on the surface of the cell. Series of activities such as release by plasma cells which cause rearrangement of B cells causes the cell to divide and proliferate. The process through which daughter cells arise from a parent cell called clonal expansion.
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