Ap bio

Chart showing a food web: Omnivores?

C

There is strong evidence that two species of cliff-dwelling birds have nested in the same environment and fed in the same water for thousands of years, with each having stable population sizes. Based on this information, which of the following statements is the best conclusion?

D. The two birds have different ecological niches that allow coexistence.

What happens in both meioisis And mitosis

Separation of the sister chromatids

which of the following statements about glucose, galactose, and fructose is most likely true?

The carbohydrates have different properties because they have different arrangements of carbon, hydrogen, and oxygen atoms.

Which of the following communities is most likely to be the most stable

The one with high species diversity

Beaked whales feed at various depths, but they defecate at the ocean's surface. Nitrogen-rich whale feces deposited in surface waters supply nutrients for algae that are eaten by surface-dwelling fish. Which of the following best predicts what would happen if the whale population decreased?

The surface fish populations would decline due to reduced populations of algae.

experiment in which a dialysis-tubing bag is filled with a mixture of 3% starch and 3% glucose and placed in a beaker of distilled water, as shown below. After 3 hrs, glucose can be detected in the water outside the dialysis-tubing bag, but starch cannot....from the initial condx and results described which of the following is a logical conclusion?

the pores of the bag are larger than the glucose molecules but smaller than the starch molecules

The population density at point Q indicates that (Point Q is at the top of the curve)

the reproductive rate equals the death rate

All of the following are density dependent factors that limit the animal population except

weather

Simple diffusion and facilitated diffusion are related and that they are both

Depend on a concentration gradient

Which of the following explains why a cell's plasma membrane is composed of two layers of phospholipids rather than just a single layer?

Having two oppositely oriented layers of phospholipids allows he only the hydrophobic heads to interact w/water inside and outside of cell

Which of the following questions or best guy to follow up investigation about the role of pheromones in locating pray

How do pike determine that the fathead minnow pheromone is present in the water

Water 's unique properties are a result of

Hydrogen bonds

Which of the following best explains how higher concentrations of nitrogen and phosphorus contribute to eutrophication?

Algae require nitrogen and phosphorus to build macromolecules, so higher concentrations of these nutrients can result in algal blooms.

What is true of mitosis?

Maintained the same number of chromosomes in the daughter cells as in the parent cell

Chart showing a food web: Photosynthetic organism will be represented by which species

A

I fish has a population of 250 in a pond and has a maximum annual rate increase of 0.8. If they carry capacity of the pond is 1500 for the species, what is the expected population size after one year

417

Greatest possible pressure in dialysis tube number?

2

Net movement of water into the beaker?

4

Structures of carbohydrates?

Monomers, chains of monomer and branched structure

Amylase is an enzyme that converts carbohydrate polymers into monomers. Glycogen synthase is one of the enzymes involved in converting carbohydrate monomers into polymers. Which of the following best explains the reactions of these enzymes?

Amylase aids in the addition of a water molecule to break covalent bonds whereas glycogen synthase aids in the removal of a water molecule to form covalent bonds.

which of the following is an example of a density independent limitation on a population

At higher temperatures, more tomato plants in a population become infested with nematodes than at lower temperatures.

What is a feature in organic compounds not in inorganic compounds

Carbon atoms covalently bonded

The dash line on the graph represents

Carrying capacity

Chart showing a food web: Species that are herbivores ?

D

Site of transport in and out of the cell

D

Which of the following statements correctly describes a typical trend during the initial stages of succession in a terrestrial ecosystem?

Diversity of plant species increases.

On what point on the curb in the diagram best represents a carrying capacity of the environment

E (It shows a point at the very top of the curve)

Which of the following best explains why there are seldom more than five trophic levels in a food chain?

Energy is lost from each trophic level.

Which of the following observation best represents a mutualistic relationship

Flowers produce nectar that be together to make honey and in the process of bees pollinate flowers

experiment in which a dialysis-tubing bag is filled with a mixture of 3% starch and 3% glucose and placed in a beaker of distilled water, as shown below. After 3 hrs, glucose can be detected in the water outside the dialysis-tubing bag, but starch cannot...if instead of the bag, a potato slice were placed in the beaker of distilled water, which of the following would be true of the potato slice?

Gain mass

Process by which a gas from atmosphere is obtained by plants and used to build lipids

Gas is directly obtained by plants as part of the carbon cycle

Graph

Intermittent streams Only

An overlap in the niches of two species will most likely result in

Interspecific competition

Which statement is the most accurate description of the reaction shown in the following figure?

It represents a polypeptide chain that is broken down through a hydrolysis reaction.

Long-term exposure to extended periods of bright light after sunset is most likely to affect a person in which of the following ways.

Melatonin synthesis will be inhibited, and the person will have difficulty sleeping.

Which part of the amino acid most likely contributes to the hydrophobic behavior of this region of the polypeptide?

Methyl (CH3) group.

Active ligand to receptor?

Mutation in receptor gene that causes a substitution of charged amino acids

A typical bag of fertilizer contains high levels of nitrogen, phosphorus, and potassium but trace amounts of magnesium and calcium. Which of the following best matches the fertilizer component with the molecule in which it will be incorporated by organisms in the area?

Nitrogen will be incorporated into nucleic acids.

Root tip

Paired chromatids will separate

Based on the molecular structures shown in the figure, which molecule is likely to be solid at room temperature?

Palmitic acid, because the absence of carbon-carbon double bonds allows the molecules to pack closely together; double bonds increase fluidity, which is why unsaturated fats are liquid

Birth rate; 0.22 death rate 0.12 population 13 monkeys assuming no immigration or immigration which of the following best describes the change in population size that occur over the next year

Population will increase because more monkeys being born every single year then are dying

Which of the following best describes a likely result of tropical rainforest deforestation

Populations of plants and animals or decrease as more rain forest disappears lead to a decrease in biodiversity

Feedback mechanism?

Positive feedback because few platelets that initially bond

Which part of the cell membrane is responsible for active transport

Protein

DNA replication occurs. ...

S phase

Most efficient and waste removed by diffusion?

Smallest box 10um

Which of the following best describes the hydrolysis of carbohydrates?

The addition of a water molecule breaks a covalent bond between sugar monomers.

Background: experiment in which a dialysis-tubing bag is filled with a mixture of 3% starch and 3% glucose and placed in a beaker of distilled water, as shown below. After 3 hrs, glucose can be detected in the water outside the dialysis-tubing bag, but starch cannot...which of the following best describes the condition expected after 24 hrs?

The bag will contain more water than its original condition

Which of the following statements about how honeybees communicate the position of flower patches is most consistent with the model?

The farther the target flowers from the hive, the longer the WAGGLE face

Which of the following is an accurate description of the process shown in Figure 1 ?

The formation of a covalent peptide bond in a dehydration synthesis reaction.

Question

The independent variable is a group of squirrels, the deep in a variable is the percent of the squirrels responding

Which of the following best describes how amino acids affect the tertiary structure of a protein?

The interactions of the different R -groups with other R -groups and with their environment determine the tertiary structure of the protein.

All the following statements concerning characteristics of predator prey relationships are correct except

The population of predators most often eliminate the population of prey

What is used to carry genetic code

nucleic acids

What is the phone statements correctly describes the flow of energy in a system

Trophic level five has approximately 500 J of available energy

Synthesis of proteins or carbohydrates polymers always produce what as a byproduct

Water

In the year 2000, specimens of Caulerpa taxifolia, a green alga used in tropical aquariums, were found off the coast of California. Native to the Indian Ocean, C. taxifolia is known for aggressive growth and an ability to compete with sea grasses. It is currently on an international list of invasive species. Which of the following best predicts the consequences of the introduction of C. taxifolia to the California coast?

Without natural herbivores or competitors, C. taxifolia will grow rapidly and crowd out native species of producers.