A scientist is studying an organism and has classified it as an animal. Which statement must be true about the organism?

A) It is multicellular.

B) It displays radial symmetry.

C) It has a backbone.

D) It contains cells without nuclei.

During the first step of cellular respiration, glucose is converted into

Graylag goslings imprint on a nearby object that moves away from them during a sensitive period in the first few hours after they hatch, and follow the object steadfastly from that time on.

A biome is a group of ecosystems that share which of the following? Check all that apply. - similar climate - geographical location - similar vegetation - similar wildlife

DNA controls the cell by transmitting genetic messages that result in protein production. Place the following organelles in the order that represents the flow of genetic information from the DNA through the cell: nuclear pores, ribosomes, nucleus,

Which statement about natural selection is true? A. Natural selection is incapable of creating perfect organisms; artificial selection is the only way that perfect organisms can evolve. B.

Match the following words with their meaning. Part A1. Typhus fever 2. strep throat 3. diarrhea 4. staph infections 5. tuberculosis 6. Lyme disease Part Ba. Rickettsia prawazekii b. Escherichia coli c. Streptococcus pyogenes d.

Which of the following is NOT a component of the lymphatic system? Appendix Spleen Tonsils Adenoids All of the above are components of the lymphatic system.

Explain why cells are typically small?

For plant stem length, the dominant allele for height is T and the recessive allele is t. If a heterozygous parent for tall stem length crossed with a homozygous recessive parent for short stem length, what would be the phenotypes of the offspring?

How big is a western toad