Answers NY-Life Science Biology Term 1 HillcrestUnit Test

Unit Test Answers

1 verified answers

Which statement best describes the process of chemiosmosis and the direct result of its occurrence?

Hydrogen ions flow from the thylakoid down a concentration gradient through ATP synthase channels into the stroma. ADP is converted to ATP.

Hydrogen ions flow from the thylakoid down a concentration gradient through ATP synthase channels into the stroma. ATP is converted to ADP.

Hydrogen ions flow from the stroma down a concentration gradient through ATP synthase channels into the thylakoid. ADP is converted to ATP.

Hydrogen ions flow from the thylakoid against a concentration gradient through ATP synthase channels into the stroma. ADP is converted to ATP.

Free Preview

Which question can be answered by following the scientific method?

What was the highest temperature that was recorded yesterday?

What is the most interesting aspect of the light-dependent reactions?

How does a change in temperature affect the stomata of a plant?

How many stomata are there on this leaf?

Primary lateral sclerosis is a disease that affects the body's ability to react to stimuli and causes a person to have difficulty moving the legs, body trunk, arms, hands, and face.Which specialized cells are most affected by this disease?

epithelial cells, hepatocytes

neurons, epithelial cells

muscle cells, neurons

hepatocytes, muscle cells

Which of the following is an inference?

A burning candle is extinguished when it is covered with a jar.

The candle burns longer than expected in a jar that has a plant in it.

A plant lives longer than expected in a jar that has a burning candle.

There is more oxygen in the jar because there is a plant in it.

The data in the graph are the result of a paramecium being placed in a hypertonic salt solution.Based on the data in the graph, which would most likely happen if the paramecium were placed in distilled water?

The contractions would increase.

The contractions would decrease.

The contractions would cease altogether.

The contractions would establish dynamic equilibrium.

Shannon is making a Venn diagram to organize the characteristics of cell walls and cell membranes. Which pair of characteristics both belong in the two areas of the Venn diagram that do not intersect?

helps with communication; contains mostly cellulose

contains mostly cellulose; forms the outer layer of animal cells

is found in plant cells; is found in animal cells

is semipermeable; found in animal cells

Which homeostatic process is characterized by the diffusion of only water molecules?

active transport

osmosis

passive transport

dynamic equilibrium

Which organelles are not found in plant cells?

vacuoles

mitochondria

chloroplasts

centrioles

Which of the following describe a stem cell? Select three options. a cell that is able to develop into a variety of specialized cellsa cell that is able to self-renew from differentiated cellsa specialized cell that results in differentiationa specialized cell that results in self-renewala cell that divides by meiosis to produce new cells

a cell that is able to develop into a variety of specialized cells

a cell that is able to self-renew from differentiated cells

a specialized cell that results in differentiation

a specialized cell that results in self-renewal

a cell that divides by meiosis to produce new cells

How does ATP supply energy for cellular activities?

by breaking off a phosphate group from its structure

by releasing the sugar molecule from its structure

by adding a phosphate group to its structure

by attaching itself to a glucose molecule

Influenza (the flu) is caused by a virus that attacks the respiratory system. Which type of gene is most likely to be widely expressed in the body of someone who contracts the influenza virus?

the gene that controls the production of stem cells

the gene that controls the production of skin cells

the gene that controls the production of red blood cells

the gene that controls the production of white blood cells

Two cells in the same organism differ only in the number of chloroplasts they contain. The first cell has multiple chloroplasts, and the second cell has very few. What would most likely characterize these cells?

There would be no difference between the functioning of the cells because the chloroplasts are not essential cell structures.

The second cell would become larger because it would have fewer chloroplasts regulating its size and shape.

The second cell would shrink because it would not be able to store water and maintain cell shape.

The second cell would not be able to produce as much food because it could not capture very much sunlight.

The table lists some organelles and functions. Only one pair is correctly matched.Functions of OrganellesOrganelleFunctionLysosomeStores water and waste materialsVacuoleBreaks down sugarsMitochondrion Breaks down waste materials and debrisRibosomeProduces proteins for the cellWhich organelle in the table is correctly matched with its function?

lysosome

vacuole

mitochondrion

ribosome

An animal cell (left) and a plant cell (right) are shown.Which organelle, labeled X in the diagram, is found in both plant and animal cells?

the cell wall

the cell membrane

mitochondrion

ribosome

Consider the plant cells in the image below.Which is a function of the cell structure that is labeled X?

It stores lipids.

It helps in cell metabolism.

It provides support.

It transports proteins.

Did you find these answers helpful?

Unit Test Answers

More from this Course

TRY EDGENUITY HACKS