A heme group contains four pyrrole rings, which are linked via methene (methine) bridges.

In humans, gender is determined by the 23rd pair of chromosomes. xx results in females, whereas xy results in males. what fraction of a male's sperm would be expected to bear an x chromosome?

Can two different species breed? Explain

A butterfly young shed its skin a lot of time. Why does it needs to undergo the process if moulting?

Humans grow to a certain height and then do not grow any taller. do plants grow in the same way? how do plants get taller? explain

What facts other than incorrect base pairing can alter DNA?

The Tasmanian devil has 14 chromosomes in each of its somatic cells, 2n = 14. How many chromosomes would be present in a cell after anaphase of Mitosis?

What will a hypothesis become if it is supported by repeated experimentation

During energy transformations, sometimes energy is destroyed. is that true or false

Your patient has been diagnosed with right ventricular failure. Which of the following abnormalities is not a direct result of this problem Your patient has been diagnosed with right ventricular failure.

Which of the following is an example of sensors working during homeostasis? a blood volume decreasing from lack of water b the pancreas failing to release insulin c acidic blood pH disrupting cell metabolism d energy demands triggering a release of