Thr sum of 21 and 4, doubled

Many functions in the body are controlled by special compounds. Which statements about these compounds do you think are true? Check all that apply. The body can make all of the compounds it needs. The body gets energy from some compounds.

Marissa is walking along the beach and finds an unknown organism on the shore. It has bilateral symmetry, a nongelatinous, nonsegmented body that is bigger than 0.5 mm, and a shell. In which phylum can the organism be classified?

Which best describes how DNA fits inside a cell nucleus? DNA folds into stacked layers called chromatin, which then squeeze into the nucleus. DNA is double-stranded, so one strand is inside the nucleus and the other wraps around the nucleus.

These are physical features shared by organisms with common ancestry; they may have the same structure What are these shared physical features?

The major storage area for earth bound carbon can be found in

Give four reasons why organic material is good for the soil.

What is true about psychosocial changes observed in adolescents? select all that apply?

This causes substances to move across the cell membrane, against the concentration gradient. Select one: a. active transport b. neutral transport c. passive transport d. hydrophobic transport

1. The nerve impulse is an electrical current that travels along dendrites or axons. True or false

What led to the conclusion that single-celled prokaryotic organisms evolved in the absence of oxygen