Which biological molecule is associated with iron (Fe) ions?

A. Histone

B. Catalase

C. Chlorophyll

D. Hemoglobin

E. RNA polymerase

Which best describes mitochondria DNA (mtDNA) ?

True or False? An environment containing no calcium is the best for brine shrimp egg hatching.

Which of the following occurs during expiration? A) Lung volume increases while air pressure in the lungs decreases B) Lung volume decreases while air pressure in the lungs increases C) Lung volume increases while air pressure in the lungs increases

Which of the following is considered a true medical emergency due to the high risk of blindness that may occur if not immediately corrected? A. retinal detachment B. macular degeneration C. diabetic retinopathy D. cataract

As we move from kingdom down to species, the characters of the organisms we are describing become much more ___. A.) Specific B.) general

The carbohydrates seen here contain three common elements. they are

A student observes a blood vessel in a grasshopper. For this reason, the student claims that a grasshopper has a closed circulatory system. Evaluate the students claim.

Some regions of chromosomes are more likely to cross over compared to others. Such a region is called a "hot spot". Gene A and gene B, which are in a hot spot for crossing over, are 5,000,000 bp apart on the same chromosome.

Distinguish between the biotic and abiotic factors in an ecosystem

What coefficient should be placed in front of the HCl so that the reaction obeys the Law of Conservation of Mass? Ag + _HCI - AgCl2 + H2