identify the selctively permeable barrier of the cell that allows certain molecules to enter and exit the cell

In prokaryotes, a search for genes in a DNA sequence involves scanning the DNA sequence for long open reading frames (that is, reading frames uninterrupted by stop codons). What problem can you see with this approach in eukaryotes?

Even though the amino acid sequence between subunits of hemoglobin and myoglobin are not exactly the same, there are other similarities between the two proteins. Which level of protein structure is not found in both molecules?

What will the cells in step 4 mature to become?

What characteristic is common to both in unicellular and multicellular algae?

What is a monomer and what is a polymer

Why is forecasting human population growth more difficult than forecasting population growth in other animals?

You and your physiology instructor are trapped in an overturned ship. To escape, you must swim underwater a long distance. You tell your instructor it would be a good idea to hyperventilate before making the escape attempt.

Thermal vents are found at the bottom of the ocean in the benthic zone.

What is a transitional fossil? what is a transitional fossil? a transitional fossil is in the middle of a direct lineage stretching from ancient forms to organisms alive today. transitional fossils were poorly adapted to their environments.

Explain the processes involving mitosis