A body cell of a sand dollar has 52 chromosomes. How many chromosomes should a sand dollar gamete contain?

What is the most obvious sign of puberty in girls? an increase in weight breast development the onset of menarche an increase in height?

What is a function of a protein macromolecule

A. Biologists studied the effects of forest fragmentation by calculating the difference between the amount of plant biomass in the edges of forest fragments and the interiors of unfragmented forest. 1. True2. falseB.

Which organ is able to extract dissolved oxygen from water? A) Gills B) Both gills and lungs C) Lungs D) Neither gills nor lungs

Which of the following is not a component of plasma? a. Water b. Proteins c. Nutrients d. Particles

What macromolecule is the primary energy source for organisms?

What is the difference between diploid and haploid cells?

The function of a neuron is to

Can a molecule may contain two atoms of the same element

What are the warning signs of COPD?