Which echinoderm is Horace most likely examining?

a sea cucumber because it uses tentacles for feeding

a sea cucumber because it has tube feet

a brittle star because it uses tentacles for feeding

a brittle star because it has tube feet

What do motor neurons transmit signals to?

What type of tissue is epineurium and perineurium?

Which of the following does NOT produce seeds? A pine tree A fiddlehead fern A rose bush An orchid

What does the word protist mean?

What kind of organisms have cell wall

Which of the following is a part of the digestive system? Capillary Diaphragm Ovary Saliva

An important characteristic of animals is that all of their cells works the same way, they do not have any specialization. True or False?

When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods? A) latent periodB) fatigue periodC) relaxation periodD) refractory period

Evan and his friends are so surprised to find deer in their subdivision! His mom is getting mad because every morning they are in the garden eating everything they see.

HURRY! Which best describes the structure of the molecules that make up proteins? O A. Carbon + hydrogen + oxygen B. Phosphate + sugar ring + nucleotide base O C. Hemoglobin + oxygen + iron O D. Carboxyl group + amino group + side chain