The number indicated is measured in Daltons and most accurately tells you the number of ______________ in the atom.

Carbon dating relies on the measuring of the rare presence of carbon 14 in organic matter. Which of these Bohr models accurately depicts carbon 14? (14 refers to carbon mass)

Which of these Atoms is most likely to form an ion with a charge of -2?

Which of the following has the highest concentration of H+ ions?

The reduced annual variation in temperature of costal regions as compared to inland regions at the same latitude is due to...

This is DNA. What subunit is it composed of?

Peptide bond, N-Terminus and C-Terminus are all vocabulary related too...?

How many carbons are present in Ribose?

If I have a strand of DNA that looks like this, what RNA will it make?

Maple Syrup Urine Disease (MSUD) is a serious genetic disorder where the body is unable to break down certain amino acids. Two point mutations in the protein BCKD that cause the disease result in a Glycine→Serine, and Methionine → Leucine respectively. Which mutation do you expect to have a greater impact on the protein structure?

Ribosomes are best described as...

This is a electron microscopy image of a plant cell. The large, fluid filled structure in the center of the cell (marked with a star) is occasionally able to degrade macromolecules. It is best described as a...

What are the arrows pointing
to in these different
microscopy images of cells?

Your colleague comes back from her latest arctic field expedition with a sample of an unidentified single cell marine organism. Microscopy reveals it has ribosomes, chloroplasts, a Golgi body, and a cell wall. Based on this, you determine this is a:

Prokaryotes and Eukaryotes both contain structures called Flagella. If each of the 20 dark rings in this cross section shows a microtubule, what do you know about the cell that contains this flagella?

A carefully designed experiment should test only the ____________________.

Science is in a constant state of change.

Which of the following best describes the reductionist approach to science?

Which of the following statements describes the hypothesis as used in science?

Surveying all of the living organisms in the Duck Pond would be an example of _____________.

Which is the correct order of events that comprise the Scientific Method:

A scientific theory is __________________. 

Which of the following are characteristics of life?

What is the best definition of biology

Readily observable features of living things represent the organism's ____ , which is largely determined by genetic information, which is the organism's ____. Both of these features of living things are used by biologists to classify and name organisms.  This field of biology is called ____.

Two organisms may be in the same class, but different families.

Which of the following is NOT apart of the cell theory?

Amoebas are single-cell organisms.  The amoebas that live in the Virginia Tech Duck Pond represent a/an ________ .  There are more organisms in the duck pond than just amoebas.  Waterfowl, fishes, a variety of invertebrates, and plants are among the many species present.  Together these organisms compose a/an _________ . 

As you are walking around in the winter when the temperature is well below freezing, you notice that a pond—known to be rich in aquatic organisms—has become frozen. Which property of water allows for the fish and other aquatic organisms to survive in the winter?

A solution has an initial pH of 5, which is considered to be acidic. This solution undergoes a change and the new pH is 6. Which of the following is true about this change?

3.3 Describe the basis of the pH scale

When the atom above forms bonds with other atoms it tends to _ electrons.  How many electrons will it gain/loose _ . 

How will this affect the charge of the atom? _

In which of the following biological macromolecules is the sulfhydryl (–SH) functional group most likely to be found?

The _____ of the amino acid has the greatest influence on the overall structure of a protein.

Label the following

Mitochondria and chloroplasts are organelles in prokaryotes that have properties of eukaryotes, suggesting an ancient symbiotic origin.

Which of the following are functions of the Golgi apparatus? Select ALL answer choices that apply.

____ is a prokaryotic cell and ____ is a eukaryotic cell. In Cell A, RNA synthesis and protein synthesis occur simultaneously. In Cell B, RNA synthesis and protein synthesis occur at different locations: the RNA must be transported before the protein can be synthesized. The feature that accounts for this difference between the two cells is the ____.

Where is the site of lipid synthesis

Do prokaryotes have a nucleus/nucleolus or a nucleoid?

Level of Protein Structure

How many valence electrons does Ar and Ca have?

What is a positively charged ion called?

Why is it important to explain the experimental design for your experiment in a publication?

How many covalent bonds does the carbon atom form?

What are hydrogen bonds?

Certain microorganisms live in aquatic environments in which the pH is 3. The internal pH of these microorganisms is neutral.

What is the relative H+ concentration difference (e.g., 10-fold) between the environment and the inside of the microorganisms?

Is the H+ concentration inside the microorganisms greater or lesser than that of the aquatic environment they inhabit?

You are studying the macromolecules synthesized by certain cancer cells. Assume you wish to specifically label only the proteins made by these cells. One way of labeling is to use radioactive elements.

What does A correspond to?

What does B correspond to?

What does C correspond to?

What does D correspond to?

What does E correspond to?

What organelle is this?

Pancreatic beta cells, found in the human pancreas, function by synthesizing and secreting (via exocytosis) the protein insulin. Regulating insulin levels is critical for maintaining the body’s blood sugar levels. In the pancreatic beta cell, insulin production accounts for more than half the total protein synthesis occurring in the cell.

What organelle is this?

Macrophages are immune cells found in the human body. Their primary role is to ingest and then digest both foreign invaders into the body, as well as old and damaged cells from the within the body. Low pH is critical to the disassembly of ingested material.

What organelle is this?

Spongy mesophyll cells are the primary site of sugar molecule synthesis in plant leaves. Located on surfaces of the plant exposed to sunlight, these cells also help with the generation of ATP.

What organelle is this?

Paramecium is a genus of aquatic unicellular eukaryotes. Critical to their survival is their ability to balance water levels within the cell. The organelle essential to this process has the ability both to store water, and to release it outside of the paramecium when too much water enters the organism. Since waste molecules may also be present in the expelled fluid, the organelle may also have some role in waste regulation.

What organelle is this?

Cardiac cells contract approximately 100,000 times per day in order to keep the blood pumping throughout the body. To sustain constant and strong muscle contractions, these cells consume (and therefore must also generate) some of the highest levels of ATP within the body.

Plants take up chloride ions (Cl^–) from the soil. Chloride ions play many roles within the plant, such as osmotic regulation and photosynthesis. How do plants transport chloride ions from the cytosol to the vacuole? The cytosol has a lower concentration of chloride ions than the vacuole.

Which transport mechanism is shown in the figure below?

Prednisone is a steroid that is commonly prescribed to treat allergic reactions, arthritis, and many other inflammatory responses. How does prednisone induce a change at the cellular level?

What type of transport is this?

Cells of the small intestine absorb fluid from the gastrointestinal tract

What type of transport is this?

Low-density lipoprotein (LDL) cholesterol, enter cells after binding to LDL receptors

Low abundance --> High Abundance