help with bio?

Question

8) Which of the following organisms is a detritivore?
a) Gorilla
b) Earthworm
c) Bear
d) Crow
e) Cat
9) Organic compounds:
a) are made without pesticides.
b) contain carbon.
c) are formed by hydrogen bonds.
d) cannot be synthesized in a laboratory.
e) none of the above.
10) A nerve impulse traveling along a neuron toward another neuron must be transmitted across a gap called a _______ .
a) node
b) cleft
c) space
d) saltatory conduction
e) synapse
11) Which of these tissue types is not connective tissue?
a) Bone
b) Cartilage
c) Adipose tissue
d) Blood
e) Muscle tissue
12) Which of the following statements is true?
a) Each T cell can respond to thousands of different antigens.
b) An allergy occurs when the body recognizes itself as nonself.
c) An antibody has a single antigen-binding site.
d) All cells express MHC-II molecules on their surface.
e) An effector B cell secretes antibodies.

Answer 1

8) B

9) B

11) D

Answer 2

Ans . 9 . b)contain carbon .

Ans . 10 .e)synapse.

Ans . 11 .c)adipose tissue .