How many electrons does carbon have available for chemical bonding?

one

two

four

The puppy chewed on itit'sits bone.

Which of these is a hollow ball of cells that develops after the fertilization of the egg?

What is cross-pollination? A. Cross-pollination involves human transfer of pollen from one flower to another. B. Cross-pollination occurs when pollen fertilizes female egg cells on the same flower. C.

How are osmosis and diffusion alike? Both move molecules from areas of high concentration to areas of low concentration. Both processes occur through permeable bilayer membranes. Both require additional energy provided by channel proteins.

What is the role of DNA in determining an organisms trait?

All the systems of the body work together to keep the internal environment of the body constant within certain limits. this process is called a. homeopathy. b. homoeostasis. c. positive feedback. d. neuroglia.

An experiment for a new asthma medication was set up into two groups. Group one was given the new drug for asthma, while group 2 was given a sugar pill. The sugar pill serves as a:

Linear equations 4x+17=-15 solve in one variable.

Because genes close together on a chromosome tend to be inherited together, they are said to form a

What are the chances of having a child with hitchhiker's thumb if both parents are hybrids? Show work