How many variables should you change in a controlled experiment?

one

two

four

as many as possible

Here is a list of features seen in all cells today: DNA, RNA, Proteins, the genetic code, ribosomes, phospholipid membranes, DNA polymerase for DNA replication, RNA polymerase, ATP-ase (=ATP synthase), reductive Citric Acid Cycle ...

Which of the following is a true statement cellular respirstion occurs only in plant cells cellular respirstion occurs only on animals cells cellular respirstion occurs in both plant amd animal cells cellular respirstion occurs in some plant cells

4. What is independent assortment and why is it important to the sustainability of populations?

Scientists find a particle only visible with an electron microscope and is the shape of a soccer ball. The particle is non-cellular but has a DNA core.

Dehydration synthesis and hydrolysis are reverse reactions. describe why they are reverse reactions

Which of the following is capable of converting solar energy into chemical energy? a Chloroplasts b Vacuoles c Golgi Apparatus d Mitochondria e Vesicles

Which of these organs removes old or damaged blood cells from the blood that flows through it a. pancreas b. lymph node c. thymus d. spleen

During what stage do you learn abstract thinking skills

Reaction to a change in the environment it needs to be 8 letters

Two individuals decide to have children. the expected blood group genotypes are 50% of blood type a, and 25% each of blood types ab and b. what genotypes are the parents?