Which test tube (s) acts as a negative control?

gelatin

water

mystery food sample

both water and gelatin

What group of anti microbial chemicals functions by oxidizing cellular components? A. antibiotics b. halogens c. alcohols d. heavy metals e. phenolics

A student is applying the scientific method to a study of the effect of temperature on plant growth. Each day he writes down the temperature and plant height measurements in a table in his laboratory notebook.

Match each item to its best description A. solar nebula B. accrrtion disk C. Solar system May form after a supernova Does not spin A central star with planets around it

Gene expression is how genes are passed from parent to offspring. the unique set of genes in an individual. the banding pattern seen on a chromosome. the flow of genetic information from genes to proteins.

What is orgasisims quick i am in class

Vegetative plant organs are the root, stem, and leaf. Each organ has a specific function for the survival of the plant. Which organ is the part of the plant that supports the leaves and flowers?

Which molecule is synthesized by plants and is a major source of energy for plants and animals?

A biology student wants to understand how blood flows through the aorta. To model the heart and aorta, she sets up two identical pressure-controlled tanks that push blood through a 2-centimeter diameter tube. Her results are shown in the table below.

Which characteristic should describe all evidence collected by a scientis

What macromolecule is the primary energy source for organisms?