Answer:
Explanation:
Similarities:
Osteoporosis, osteomalacia and rickets are the bone deformities.
These are associated with poor bone growth, bone pain, softening and weakening of bones.
These are caused by the deficiency of Vitamin D and calcium.
Differences:
Rickets is a bone deformity condition which affects the bones in children whereas osteoporosis and osteomalacia can be seen in adults.
In oesteoporosis the bones become brittle due to the presence of pores in them but pore formation does not occur in oesteomalacia and rickets.
The correct answer is A. Production of spermatozoa
Explanation:
The accessory glands in males include different glands and structures such as the bulbourethral glands, prostate gland, and seminal vesicles that produce different substance to protects or preserve spermatozoa by providing this ith nutrients, and buffers that regulate the pH, besides this, in the case of the seminal vesicles, these transport the spermatozoa and the other fluids. However, it is not a function of the accessory glands to produce spermatozoa as this occurs in the testes that are not part of the accessory glands.
Answer:
The correct word to be fill in the blank is 'energy.'
Explanation:
Secondary active transport is a type of active transport, which involves transport of molecules or ions across the membrane against their concentration gradient by using energy.
In secondary active transport, energy is provided by electrochemical gradient. It involves transport of two molecules or ions (either in same or opposite direction) and required energy is generated due to difference in electrochemical gradient formed by pumping or ions across the cells.
An example of secondary transport is transport of potassium ions by K+/H+ exchanger that transports hydrogen ions and potassium ions in opposite direction. It uses energy from proton motive force (generated by transport of hydrogen ions or protons) to transport potassium ions.
Thus, the correct answer is 'energy.'