How many chromosomes in a male sperm cell

Which therapeutic approach is most effective in treating difficulties such as premature ejaculation and erectile difficulties?

Which are examples of how technology has advanced scientific understanding? Check all that apply. 1. using hot water to sterilize medical equipment 2. transplanting a human organ into another individual 3.

The amount of genetic variation produced during meiosis is related to (Select all that apply.) A - The number of chromesomes B - The amount og crossing-over that occurs C - The number of cells produced during a miotic division D - The size of the

Animals obtain energy through a series of chemical reactions in with sugar and oxygen gas are reactants this process produces water and carbon dioxide as waste products how might you use a radioactive isotope to find out whether the oxygen in CO2

What is the maximum number of atoms that a carbon atom can bond with in a organic compound

Which two strata of the epidermis are most susceptible to cancer?

What term best defines the process that occurs when nuclei combine to produce a nucleus with more mass? a. fusion b. fission c. anti-synthesis d. atomic recombination

Which of these is an advantage of wind energy? A. It reduces bird and bat populations. B. It generates noise pollution. c. It generates electricity. D. It increases greenhouse gas emissions.

a group of of scientists is studying the internal parts of a cell. which microscope is most appropraite for these scientist to use

Which of the following choices is a biotic factor in the ecosystem? sunlight, water, deer, soil