The periodic table is organized into vertical groups of

A

elements with similar properties.

B

compounds with different properties.

C

elements with all the same chemical properties.

D

compounds with all different physical properties.

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?