How does one cell become a brain cell and another a skin cell?

In fungi, which is a disadvantage of asexual reproduction as compared to sexual reproduction? Asexual reproduction requires ideal environmental conditions. Asexual reproduction results in offspring that are genetically unique.

Which form of cellular respiration releases MOST energy? A. aerobic respiration B. anaerobic respiration C. acoholic fermetation D. lactic acid fermetation

Which of the following is true about differentiated cells? A. They have different DNA which allows them to perform different tasks. B. They all contain the same DNA but they express different genes. C.

Communities make up a major component of an ecosystem. true false

Which of these is NOT true of cells? 1. they are much like empty atoms 2. they were first discovered in the 1600's 3. they can be found in pond water 4. they contain a huge array of working parts

How does random fertilization add to genetic variation? a) reshuffling of randomly picked up chromosomes b) random fusion of genetically unique gametes c) exchange of genetic material between homologous chromosomes

When the energy of a light wave is transferred to a particle and causes it to vibrate and generate heat, the energy of the light wave is what?

Which statements about a child with brown eyes must be true? Choose more than one answer

I observe that squirrels that live in the southeastern United States are much thinner than squirrels that live in the northeastern part of the country.

66) homologous chromosomes move toward opposite poles of a dividing cell during; a) mitosis.; b) meiosis i.; c) meiosis ii.; d) fertilization.; e) binary fission.