Hi There!
Question:
Which statements indicate what the fossil record suggests about evolution on Earth? Check all that apply.
Answer:
Organisms originally lived only in Earth’s water.
Plants did not have flowers when dinosaurs existed.
Why:
Plants existed when dinosaurs did but they didn't have any flowers, because flowers came along way after plants existed. When earth was form you see that it says earliest waters so that would have meant the first organism brought to earth were organisms that lived in the water.
Hope This Helps :)
 
        
                    
             
        
        
        
Internal Regulators allow the cell cycle to proceed only when certain processes have happened inside the cell.
        
             
        
        
        
Answer:
<h3>Enzymes are typically which type of biomolecule?</h3>
Enzymes are protein biomolecules.
Enzymes are bound to specific substrate/s and act as <u>catalysts</u> that makes chemical reactions faster, such as breaking down lactose to smaller units of glucose, which is accomplished by lactase.
<u>Cofactors (metal ions such as iron, zinc) and coenzymes (organic molecules like vitamins)</u> may be needed to initiate chemical reactions.
<h3>Describe the effects that enzymes can have on substrates.</h3>
After creating the <u>enzyme-substrate complex</u> through <u>induced fit</u>, enzymatic products are seen after the reaction. The <u>substrates may be consumed during the process or preserved</u> to be used again. 
For example, these enzymatic products may be used for feedback inhibition to control the chemical reaction and production of a certain hormone.
 
        
                    
             
        
        
        
Explanation:
1)genetic drift- stochastic variation in inheritance
2)assortative mating
3)mutation
4)Natural selection
5)migration (gene flow)
 
        
             
        
        
        
The major source of energy for playing in a competitive soccer match, or participating in any athletic competition for that matter, comes from adrenaline.