Vertebrate locomotion results from the contraction of muscles anchored to what other tissue?  

A.  bone
B.  an exoskeleton
C.  each other
D.  nerves
E.  the plasma membrane


A.  bone

Biology & Microbiology

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ATP is a nucleotide composed of adenine ____ , and three phosphate groups

Fill in the blank with the appropriate word.

Biology & Microbiology

Imagine that you own a nursery and you want to reduce the chance that plants you ship will suffer from shipping

damage. You should you apply ____ to the plants before shipping.

a. cytokinins b. abscisic acid c. oligosaccharins d. gibberellins e. ethylene

Biology & Microbiology

During cleavage, the stage at which the pre-embryo becomes a solid ball with more than 12 cells. _____

A) Human chorionic gonadotropin                                          

B) Zygote                                                                             

C) Chorion                                                                           

D) Morula                                                                            

E) Folic acid                                                                         

F) Fertilization                                                                    

G) Blastocyst

H) Parturition

I) Cleavage

J) Ovulation

K) Placenta

L) Implantation

Biology & Microbiology

Maintaining the ozone layer is crucial for life because ozone

A) blocks low-energy infrared radiation. B) absorbs visible light. C) absorbs low-energy UV radiation. D) absorbs high-energy UV radiation. E) blocks high-energy infrared radiation.

Biology & Microbiology