2. What is the original source of almost all the energy in most ecosystems? (a) Carbohydrates
(b)Sunlight
(c) Water
(d)Carbon
3. Organisms need nutrients in order to
(a) Utilize hydrogen and oxygen
(b)Carry out essential life functions
(c) Recycle chemical compounds
(d)Carry out nitrogen fixation
4. Where in the cell are proteins synthesized?
(a) Mitochondria
(b)Vacuole
(c) Ribosomes
(d)Nucleus
5. The food producer within the plant cell uses energy from the sun and converts carbon dioxide and water into sugars. This sub-cellular structure is called the: (a) Vacuole
(b)Mitochondria
(c) Chloroplast

2.-(b) Sunlight

3.-(b) Carry out essential life functions

4.-(c) Ribosomes

5.-(c) Chloroplast

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.