Which of these hydrocarbons has a double bond in its carbon skeleton?

a. C3H8

b. C2H6

c. CH4

d. C2H4

(I don't know how to find out if their is a double bond based on the molecular formula)

According to the loco mass the mass of reactants and products are ...

Difference between background and mass extinction?

The special name for polymerization of protein is know as protein blank?

The biggest difference between active transport and passive transport is the need for the cell to use

During a knee-jrk reflex the nerve impulse is received by the A. thalamus. B. brain. C. spinal cord. D. spinal cord then the brain.

Mendel hypothesized that gametes have only one factor or allele for each inherited trait. This hypothesis is supported by the observation that A) diploid cells are produce by meiosis. B) haploid cells are produced by meiosis.

The plasma membrane is composed of several different macromolecules which macromolecule serves as the fluid interface between the intracellular and extracellular environments

The table above shows five different types of chromosomal abnormalities that can occur during meiosis. They result in either an individual having too many or too few chromosomes in their genome.

During which stage of disease should an infected person be considered contagious

A scientist observed the boundrary between teo tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. Does this result suppor the theory of plate tectonic? Why or why not?