Which of the following is shaped in a double helix?

a) chromatin

b) mitochondria

c) DNA molecules

d) endoplasmic reticulum

e) RNA molecule

Eric throws a basket ball straight up into the air. As it raises which form of energy is increasing?

The theory of evolution does not describe how a DNA is formed b support adaptation c say that populations change d support the process of natural selection

Which statement correctly distinguishes photosynthesis and respiration? Photosynthesis occurs in animal cells and not plant cells. Cell respiration occurs in animal cells and not plant cells.

What type of mutation results when bases are added to a gene A. frameshift B. Nondisjunction C. silent D. missense

What do you think the letters f, r and w stand for in genotypes

5 potential causes of Microevolution

Delia is interested in finding ways to cure diseases. Which of the following career fields would best suit Delia's interest? animal biology cytology nuclear biology zoology

The purpose of a mordant in the Gram stain is to: make gram-negative cells visible. prevent the crystal violet from leaving the cells. make the flagella visible. make the bacterial cells larger. remove the simple stain.

Nicolas Steno (1638-1686) recognized that fossilized shark teeth were formed from actual prehistoric shark teeth.

The fruit fly Drosophila melanogaster has four pairs of chromosomes, whereas the housefly Musca domestica has six pairs of chromosomes. How many different combinations of chromosomes are possible in the gametes of the fruit fly?