Which two systems are most directly involved in providing molecules needed for the synthesis of fats in human cells?

A. digestive and circulatory

B. excretory and digestive

C. immune and muscular

D. reproductive and circulatory

Germs can be spread from a food worker even when the food worker looks and feels healthy. Which of these is the best thing you can do as a food worker to prevent spreading germs? a. Keep thefloors clean b. Cool hot foods quickly c.

When would a diameter cut be appropriate? O A problem in a 3-foot section of the tree O A large blemish that ran the full length of the tree O A disease from the bark had ruined the wood underneath it One end of the tree was significantly narrower

During translation, chain elongation continues until: a. the polypeptide is too long to fit in the cell. b. all the amino acids in the cell are used up. c. a stop codon is encountered. d. all the tRNAs are enzymatically broken down. e.

Which characteristic describes all organisms in the domain Eukarya? A. Their cells contain a nucleus B. Their cell nuclei lack DNA C. Their cell are prokaryotic D. Their cell wall contain peptidoglycan

Speciation occurs during the evolutionary development, or phylogeny, of a species. In which of the following situations can speciation occur? When a population becomes extinct. When two populations are reproductively isolated.

What are some questions that biologists might ask about the living things they study?

A volcanic eruption causes melting of glaciers. Which of these Earth systems interact during this event? A atmosphere and biosphere B atmosphere and hydrosphere C geosphere and cryosphere D geosphere and biosphere

The presence of an epiphyseal plate indicate that

Two alternative futures for cells when they reach their size limitation

What do unicellular organisms do to maintain homeostasis?