Which stimulus would a flatworm be able to detect

The color of a predator

The feel of an approaching rainstorm

The sound of splashing water

The smell of prey

explain how to how it is possible to have thousands of different proteins when there are only 20 different animal acid

Large veins arterioles capillaries large arteries 1. : site where resistance to blood flow is greatest. 2. : site where exchanges of food and gases are made. 3. : site where blood pressure is lowest. 4.

Suppose that the central C-G base pair in the dna molecule below is substituted by an A-T base pair

Describe the 3 stages of photosynthesis and were they take place in the cell?

The plants, animals, water, and soil of a forest is an example of? A: Community B: Ecosystem C: Habitat D: Population

How is the brain able to differentiate between each sensory modality? A The action potentials, sent along the same nerve tracts, get sorted by the thalamus B The action potentials for each sense are sent along separate nerve tracts.

Nearly all cells in an organism contain identical DNA, and each DNA strand may contain hunndreds or thousands of individual genes. Is it likely that a cell would transcribe all the genes within its nucleus simultaneously. A. True B. False

Which of the following is true regarding brain development and aging? a. Blood flow is increased in the brain. b. The brain uses more oxygen. c. The brain becomes smaller and lighter. d.

Which stage of the cell cycle involves cell growth and DNA replication? A) mitosis B) cytonesis C) interphase D) prophase

Approximately what percentage of a human's DNA is used for coding information for the synthesis of proteins?