BIOL112 SI- Session 20 (4_2)- Ch. 25 (part 4)-26

Wood pulp is mainly from cycads.

• True

• False

What is the function of secondary compounds, including drugs, medicines, perfumes, and latex rubber?

• To provide 80% of calories to the world

• To be a fuel source

• To protect the plants from herbivores

• To attract pollinators to the plants

Which of these lacks cell walls?

• plants

• fungi

• animals

• proakryotes

Which of these facts about animals is not correctly defined?

• gap junctions- channel food to the developing embryo

• larva- a body form common in insects

• diplontic- diploid stage is multicellular

• mobile- able to move

Which is not true of cadherins?

• They are involved in cell-signaling and attachment.

• They are genes found in choanoflagellates and animals.

• They can function in calcium-dependent adhesion.

• The CCD domain is only found in animals.

Highly conserved genes are preserved by natural selection.

• True

• False

What is the eight-cell stage of an embryo called?

• blastopore

• blastomere

• zygote

• blastula

The ____ is the digestive cavity that forms inside the ____.

• blastocoel, blastula

• gastrula, archenteron

• blastula, blastocoel

• archenteron, gastrula

Which is not true of transcription factors?

• They are proteins.

• They control the rate of transcription of genes.

• They control translation into RNA.

• They turn on or off genes to control expression.

All three germ layers (endoderm, ectoderm, and exoderm) are found in all animals?

• True

• False