An unknown mineral sample scratches a glass plate but cannot be scratched by a carpenter's nail. For identification purposes, how is the mineral's hardness described?

Clonal expansion occurs after the activation of a b lymphocyte. a. True b. False

Meg researched the biodiversity in four water ecosystems. W - low niche diversity and warm water temperatures X - low niche diversity and cold water temperatures Y - high niche diversity and cold water temperatures Z - high niche diversity and warm

Albumin is a protein found in egg whites. Which of the following best describes the molecular structure of albumin?

Mammalian limbs are adapted for a variety of methods of food gathering. true or false

Archaea and bacteria both use whiplike structures in similar ways for locomotion, but the structures have different origins. this is an example of convergent evolution.

How do most cancers arise? question 1 choices choice a., from a single mutations arising simultaneously in a cluster of cells choice b., from a series of mutations that arise in the descendants of a single somatic cell choice c.

Briefly describe your experimental design for the first experiment. Make sure to include: a. The conditions you used to feed your mice (e. g., the foods you fed your mouse and the length of time the mouse was in the light box) b.

What caused the earth to develop layers as it cooled?

What is a difference between Newston's laws of motion and Elinstein's theory of relativity?

How to use passive transport in a sentence