Most minerals are absorbed in the intestines, and any excess is eliminated. True False
2. Why are errors in DNA replication common and difficult to prevent?
Predict what a marine biologist might look for on a dive. __
What is the function of the flagella and pill in prokaryotic cells? __
What does an enzyme do for a chemical reaction? speeds it up slows it down nothing
11. Which two domains consist of prokaryotic organisms? __ & __
When the concentration of molecules is the same on both sides of a membrane, what will the molecules do? Stop moving Move in one direction across the membrane Move in both directions across the membrane
Match the words to their definitions or examples Unicellular Bacteria Multicellular Plants and animals
What is an organism that breaks down organic matter (waste and dead organisms)and returns nutrients to the soil? Scavenger Decomposer Consumer Producer
What is the primary role of the plasma membrane in eukaryotic cells? To control cell division To create proteins To regulate entry and exit of substances To generate energy
The heart's __ chambers work together to circulate blood throughout the body. two four five three
The membrane that surrounds an entire nerve is the: perineum endoneurium epineurium neurilemma
A single neuron and all the muscle fibers it stimulates comprise a: neuromuscular junction motor end plate motor unit synapse
Most skeletal muscles cross at least one joint tendon bone ligament
During which period were prokaryotes the dominant organisms, and where did they exist? Cambrian, water Proterozoic, land Archean, land Proterozoic, water Archean, water
Practice It! Which of the following is a way in which plants can conserve water? Leaves can have a waxy cuticle. Pores on leaves can regulate water loss. All of the answers are correct. Leaves can have low surface areas.
Which group(s) has a pseudocoelom? flatworms sponges jellyfish roundworms vertebrates
Which of the following is NOT true of the appendicular skeleton? It includes the ribs and sternum. It is composed of upper and lower extremities. It makes body movement possible. It protects the major organs of the digestive excretion, and reproductive systems.
Chemical receptors that detect $CO2$ levels are called: Photoreceptors Chemoreceptors Thermoreceptors Mechanoreceptors
Answer the following questions Question 3 MICROTUBULES MAKE UP WHICH CELLULAR APPENDAGES FLAGELLA NONE OF THE ANSWER CHOICES CILIA ALL OFTHE ANSWER CHOICES
