In plant, algae, fungi, and most bacteria cells, there is a rigid layer that surrounds the cell membrane and gives protection, support, and shape to the cell. what is this layer called?

a. cell wall

b. cytoplasm

c. chloroplast

d. plasma membrane

Out of 5 undisturbed horizontal beds of sedimentary rock, we can say that A. the top layer is oldest B. the lowest layer is oldest C. there is no way of knowing which is oldest D. the 2nd and 3rd are younger than the top layer.

How do the cells of a sporophyte stalk differ from egg and sperm cells?

Sugar is dissolved in water. which one is the solute

The feature of an experiment that is changed from one treatment to the next is referred to as a (n) :

Whats different between biology and earth science

Grandpa Sam used to tell his grandkids how he first laid eyes on Grandma Sylvia. "When I was courting your granny, I was dazzled by her beautiful, LONG eyelashes. What a looker she was." "Yes, and a handsome man he was too," said Grandma Sylvia.

Jim is categorized as poor. Thus Jim's daily income must be less than how much dollars? Jim must be earning less than dollars per day.

Why does blood pressure decrease as the blood travels from arteriesto arterioles to capillaries?

Kangaroos that nurse their young in a pouch are what type of mammal? monotreme marsupial placental mammal

Sharon is a 32-year-old horse trainer. while training a young horse, she was thrown off of the horse and suffered a mild head injury. the nurse inquires about the use of a helmet.