Which is true of metabolism in its entirety in all organisms?

Metabolism consist of all the energy transformation reactions in an organism.

Metabolism depends on an organism's adequate hydration.

Metabolism depends on a constant supply of energy from food.

Metabolism uses all of an organism's resources.

A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water-equal to the volume of blood lost-is transferred directly into one of his veins. What will be the most probable result of this transfusion?

The patient's red blood cells will swell because the blood fluid has become hypotonic compared to the cells.

The patient's red blood cells will shrivel up because the blood fluid has become hypertonic compared to the cells.

The patient's red blood cells will shrivel up because the blood fluid has become hypotonic compared to the cells.

It will have no unfavorable effect as long as the water is free of viruses and bacteria.

The movement of potassium into an animal cell requires

low cellular concentrations of sodium

high cellular concentrations of potassium

Binding of a signaling molecule to which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane?

phosphorylated tyrosine kinase dimer

The difference between pinocytosis and receptor-mediated endocytosis is that

pinocytosis is nonselective in the molecules it brings into the cell, whereas receptor-mediated emdocytosis offers more selectivity.

pinocytosis requires cellular energy, but receptor-mediated endocytosis does not.

pinocytosis brings only water molecules into the cell, but receptor-mediated endocytosis brings in other molecules as well.

pinocytosis increases the surface area of the plasma membrane whereas receptor-mediated endocytosis decreases the plasma membrane surface area.

When a plant cell, such as one from a tulip stem, is submerged in a very hypotonic solution, what is likely to occur?

Plasmolysis will shrink the interior.

When the temperature of the outside air exceeds their inter body temperature, jackrabbits living in hot, arid lands will

dilate the blood vessels in their large ears to transfer more body heat to the environment.

increase pigmentation in their ears, darkening them to maximize their capacity to take up heat.

increase motor movements to find a sunny area to maximize heat transfer into their bodies.

constrict the blood vessels in their large ears to reduce transfer of external heat to the blood in their ears.

Of the following, a receptor protein in a membrane that recognizes a chemical signal or ligand is most similar to

the active site of an enzyme that binds to a specific substrate.

a metabolic pathway operating within a specific organelle.

an enzyme having an optimum pH and temperature for activity.

tRNA specifying which amino acids are in a polypeptide.

Positive feedback differs from negative feedback in that

the positive feedback's effector responses are in the same direction as the inititiating stimulus producing an intensified response.

positive feedback systems have control centers that are lacking in negative feedback systems.

positive feedback benefits the organism, whereas negative feedback is detrimental.

the effector's response increases some parameter,such as body temperature, whereas in negative feedback it can only decrease the parameter.

At puberty, an adolescent female body changes in both structure and function of several organ systems, primarily under the influence of changing concentrations of estrogens and other steroid hormones. How can one hormone, such as estrogen, mediate so many effects?

Estrogen binds to specific receptors inside many kinds of cells, each of which have different responses to its binding.

Estrogen is kept away from the surface of any cells not able to bind it at the surface.

Estrogen has specific receptros inside several cell types, but each cell responds in the same way to its binding.

Estrogen is produced in very large concentration and therefore diffuses widely.

If a pharmaceutical company wished to design a drug to maintain low blood sugar levels, one approach might be to design a compound

to block G protein activity to slow the production of glucose from glycogen in liver cells.

that increases cAMP production in kidney cells.

that increases phosphorylation of ADP activity.

that activates epinephrine receptors for a flight-or-fight response.

AP Biology-Cells

Authored by Teresa Simmons

Biology

11th Grade - University

NGSS covered

Used 269+ times

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Choose the pair of terms that correctly completes this sentence: Catabolism is to anabolism as is to .

exergonic; endergonic

free energy; entropy

work; energy

exergonic;spontaneous

Which statement is correct about diffusion?

It's very rapid over long distances.

It's a passive process which molecules move from a region of higher to lower concentration.

It requires an energy expenditure by the cell.

It's an active process where molecules move from a region of lower to higher concentration.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which describes the events of apoptosis?

The cell's DNA & organelles become fragemented, the cell shrinks & forms blebs, the cell's parts are packaged in vesicles that are digested by cells like macrophages.

The cell dies, it is lysed, its organelles are phagocytized, and its contents are recycled.

The cell's DNA and organelles become fragmented, the cell dies, and it's phagocytized.

The cell shrinks, dies, and the presence of its fragmented contents stimulate nearby cells to divide.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Prokaryotes are classified as belonging to two different domains. What are they?

Bacteria & Protista

Bacteria & Archaea

Bacteria & Eukarya

Archaea & Protista

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Plant cells have ___ for cell to cell communication.

gap junctions

plasmodesmata

desmosomes

tight junctions

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which structure is common to plant and animal cells?

central vacuole

chloroplast

wall made of cellulose

mitochondrion

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which of the following is major cause of the size limits for certain types of cells?

evolutionary progression in cell size; more primitive cells have smaller sizes.

the need for sufficient surface area to support the cell's metabolic needs.

limitation on the strength and integrity of the plasma membrane as cell size increases

the difference in plasma membranes between prokaryotes and eukaryotes

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AP Biology-Cells

Choose the pair of terms that correctly completes this sentence: Catabolism is to anabolism as __ is to __.

Which statement is correct about diffusion?

Which describes the events of apoptosis?

Prokaryotes are classified as belonging to two different domains. What are they?

Plant cells have ___ for cell to cell communication.

Which structure is common to plant and animal cells?

Which of the following is major cause of the size limits for certain types of cells?

White blood cells engulf bacteria through what process?

Which is true of metabolism in its entirety in all organisms?

A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water-equal to the volume of blood lost-is transferred directly into one of his veins. What will be the most probable result of this transfusion?

Access all questions and much more by creating a free account

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Choose the pair of terms that correctly completes this sentence: Catabolism is to anabolism as is to .