The correct answer is b, antigens
Answer:
B. Not all nonvascular plant bear seeds, but all vascular plants do bear seeds.
Explanation:
The building blocks are amino acids
Answer:
The barrier functions to regulate the chemical composition of the extracellular fluid surrounding the brain cells.
Explanation:
Blood-brain barrier
It is a very selective semipermeable membrane , hence allow some specific substance to pass via it . This barrier separates the extracellular fluid in the central nervous system and the circulating blood from the brain .
<u>The barrier is composed of the endothelial cells .</u>
Passive diffusion is shown in this system , and allows molecules like the water , glucose , amino acid to pass .
It regulates the chemical composition of the fluid of brain cell .
The provided question is incomplete as the cross in between parents, however the cross between in red and white bred parents.
Answer:
The correct answer is : five red/white chickens.
Explanation:
Parents should be homozygous for feather color, each offspring will inherit F from one of the parent, and the f allele from parent 2. So, every offspring will have the genotype F and f and will have white and red fathers.
Thus, the correct answer is : five red/white chickens.
