Arwa drew a diagram to compare sea stars and sea cucumbers.

Which label belongs in the area marked X?

have moveable spines

live in the ocean

have an endoskeleton

can push stomach outside of mouth

What is the probability of a homozygous recessive individual (ss) producing a gamete with a dominant allel (S) ?

Explain how the sickle-cell allele can be adaptive.

Some species that appear to be very different from other species can actually have similar anatomy. For example the scientist believe that whales involved from land mammals.

Which of the following eukaryotic lineages contains species that all lack functioning mitochondria? a. Rhizaria b. Excavata c. Stramenopila d. Amoebozo

Which terms describe the metabolic reactions involving the polymerization of glucose to form glycogen?

A nurse is administering medications to a client diagnosed with hepatitis b. when the nurse hands the client his/her medications, the client says, "i would rather not take that pill or any others. i know there is no cure for hepatitis b.

Differences between an artificial and a "normal" heart.

The receptive surface for pollen on an angiosperm flower is the (A) anther (B) corolla (C) ovary (D) style (E) stigma

Both liquids and ___ exert a buoyant force

What is the term given to the developing infant from the eighth week after conception until birth?