Sperm cells and egg cells are needed for human sexual reproduction. Describe in detail the type of cell division that produces sperm cells. (4 marks)

Why did Sylvia Earle win the Ted prize

Gpi-anchored proteins can be peripheral proteins if the gpi anchor is removed. they are synthesized after the translation process. where are the ribosomes that translate glycated proteins located

Which of the following adaptations allowed plants to transport water and nutrients from the soil to all of the cells within the plant A. Leaves B. Circulatory system C. Vascular system D. Cuticle

Soil type and texture are very important to farmers too little water in the soil may cause plants to wilt a and die too much water in the soil can disrupt a plants ability to take in oxygen based on your data which type of soil do you think is best

Why are nk cells and t lymphosites effective in fighting viral infections

How do substances move in passive transport?

Atmosphere: is mostly made of nitrogen is weightless protects earth from harmful radiation contains water vapor is affected by events in the hydrosphere

According to this species-area curve for reptiles and amphibians on a west indian archipelago, a 50% decrease in area will change the number of species living in the remaining area by

How do organelles interact within a cell

How do we detect the energy of a wavelength?