Answer:
1. true
2. true
3. true
4. more water molecules outside the membrane of cell
5. the second option
Answer:
The carbon atoms in saturated fatty acids are linked entirely by single C-C bonds; unsaturated fatty acids contain one or more double bonds. Double bonds cause molecules to bend, and they can pack less tightly.
Deep inside the core of the sun, protons can collide into eachother with enough speed that they stick together to form a helium nucleus and generate a big amount of energy at the same time.
Out of the choices given, the reason why Kathy's body feels sore and she has pain in her limbs after vigorously exercising is an accumulation of lactic acid in the muscles of her limbs. The correct answer is A.
