Subject and Predicate...?

Could you double check these for me?

Directions: Identify the

a)subject

b)predicate

c)simple subject

d)simple predicate

5. However, each tender green shoot of bamboo contains only a very small amount of nutrients.

a)each tender green shoot of bamboo

b)however, contains only a very small amount of nutrients

c)bamboo

d)contains

6. In addition, the large but sluggish panda is not known as a successful hunter.

a)the large but sluggish panda

b)in addition, is not known as a successful hunter

c)panda

d)is known

7. In their concern for the panda's survival, scientists are now studying the habits of this animal.

a)scientists

b)in their concern for the panda's survival, are now studying the habitats of this animal

c)scientists

d)are studying

8. A captured panda is held in a log trap for several hours.

a)a captured panda

b)is held in a log trap for several hours

c)panda

d)is

Subject and Predicate...?pc security

sounds right, but i always thought that a sentace was divided in half, not three parts (ex: however is part of sub.)