What does an organism's phenotype describe?

the allele combination for a trait

the physical appearance of a trait

the number of alleles on a gene

the number of different traits inherited

O

Which statement best describes the role of the cell membrane? A) It stores genetic material. B) It breaks down food particles. C) It encloses the cytoplasm. D) It produces proteins.

pancreatic and intestinal enzymes operate optimally at a ph that is slightly alkaline yet the chyme entering the duodenum from the stomach is very acid. How is the proper pH for the functioning of the pancreatic-intestinal enzymes ensured?

Antibiotics such as penicillin and streptomycin have been used to treat diseases such as Lyme disease and tuberculosis. Which types of disease-causing organisms can be killed or reduced in number by antibiotics? A.

Hydrilla is an aquatic plant species that is native to Eurasia and was believed to have been first introduced into the US in the 1960's. This plant is present in several Georgia waterbodies around the state.

Could a person with o + blood have two parents with o - blood? could that person have a daughter with ab + blood? explain your answer.

Which does the enzyme need to be fully functional

Peritoneal organs are completely covered in a serous membrane and have a dorsal and ventral mesentery.

All organisms need energy to function. Which cell organelle provides this energy? nucleus chloroplast vesicle ribosomes

Which of the following is an SI base unit for time? Decades Hours Minutes Seconds

Can you eat scandium