Unit 1 Biology Post Revew

Unit 1 Review

Multiple Select

Austin and Marissa selected two coneflower plants and put them in separate containers. They gave one very little water (simulating drought conditions) and gave the other regular water each day. They noted the plant that received less water had fewer open stomata and seemed to be growing slower over the summer. What could be happening in each plant? Select all that apply (2 correct answers).

• The plant under drought conditions is closing its stomata to prevent moisture loss and to help conserve water. It is growing more slowly because it is conserving water to retain its osmotic state and nutrients in order to stay alive.

• The plant that is receiving water has more open stomata because it does not need to conserve water as much as the plant not receiving water. It can lose more moisture from the open stomata; it does not have to close stomata to conserve moisture

• The plant receiving water is growing faster because its stomata are open, and it is losing more moisture through the stomata. The water it loses will help it grow, and the plant does not need to close stomata to retain its osmotic balance.

• The plant that is receiving less water is growing more slowly because it doesn't have enough water to carry out life processes. The open stomata are a result of exposure to light, not how much water the plant receives.

• The plant under drought conditions is losing less moisture through open stomata because it has been receiving less moisture overall. Having open stomata would not affect the moisture loss, and the plant would remain in a neutral osmotic state.

Drag and Drop

The initial stimulus Jane and Theo experienced in the first five minutes in the cold room was a ​​

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in body temperature. This was a result of the body moving ​​

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​homeostasis. Their bodies responded by ​

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their body temperature.

Drag these tiles and drop them in the correct blank above

towards

raising

increase

lowering

away from

decrease

Dropdown

The investigation is an example of

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because it ​

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The solute material moves ​ ​

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, and the solvent molecules move ​​

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concentration gradient.

Multiple Choice

Which cell is more complex

• Cell 1, because it contains genetic material

• Cell 2, because it contains a plasma membrane

• Cell 1, because it contains a flagella for locomotion

• Cell 2, because it contains membrane-bound organelles

Multiple Choice

Which statement best explains why a eukaryotic cell is more complex than a prokaryotic cell?

• A eukaryotic cell lacks vacuoles and mitochondria, and the circular chromosomes are bound by a nuclear membrane.

• A eukaryotic cell contains vacuoles and mitochondria, and the linear chromosomes are bound by a nuclear membrane.

• A eukaryotic cell contains one circular chromosome which is not membrane-bound.

• A eukaryotic cell contains pairs of chromosomes, which are not membrane-bound.

Multiple Choice

Which statement is most likely true regarding plasma membranes and prokaryotic and eukaryotic cells?

• Only prokaryotic cells have plasma membranes.

• Only eukaryotic cells have plasma membranes.

• Both prokaryotic and eukaryotic cells have plasma membranes, and the membranes are identical in composition and structure.

• Both prokaryotic and eukaryotic cells have plasma membranes, but they differ in composition and structure.

Multiple Select

Cellular respiration releases energy necessary for cellular functions. Select TWO organelles that are involved in cellular respiration.

• Ribosome

• Nucleus

• Cytoplasm

• Plasma membrane

• Mitochondria

Dropdown

In eukaryotes, the instructions for protein synthesis are found in the ​

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Protein synthesis takes place in the ​

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Vesicles carry the modified proteins to the​

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where they are stored or packed and shipped to other parts of the cell. Waste materials are digested and recycled by the ​

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Multiple Choice

The students view a cell with very few lysosomes. How will this MOST LIKELY affect the cell's ability to maintain homeostasis?

• The cell will not be able to produce as much ATP.

• The cell will not be able to remove as much waste.

• The cell will not be able to assemble as many proteins.

• The cell will not be able to maintain its ion concentration.

Multiple Select

Select all that would affect Enzyme X's rate of action. (Hint: 3 correct answers)

• the removal of the protein when the reaction is at 30 degrees Celsius

• an increase in temperature from 70 degrees Celsius to 80 degrees Celsius

• the addition of protein at a temperature of 5 degrees Celsius.

• a decrease in temperature from 40 degrees Celsius to 10 degrees Celsius

• the addition of cold water when the reaction is at 50 degrees Celsius

Multiple Choice

In an enzymatic reaction, what will most likely occur if excess product builds up within the system?

• The reaction will speed up.

• The reaction will slow down.

• Excess enzymes will be produced.

• Excess substrate will be produced.

Multiple Choice

Ms Onate learned that his car is better protected from the weather when it has been recently washed and waxed. Which BEST describes the major group of macromolecules that is protecting her car and how it is performing this task?

• Carbohydrates are protecting his car because they break down to create chemical energy in the paint.

• Lipids are protecting his car because they bond with water molecules to form beads of water.

• Lipids are protecting his car because their nonpolar nature makes them insoluble in water.

• Carbohydrates are protecting his car because they can provide structural support in the form of cellulose.

Multiple Choice

Which of the following could be represented by A and B, if A is directly changed into B?

• A = starch; B = proteins

• A = starch; B = amino acids

• A = protein; B = amino acids

• A = protein; B = simple sugars

Multiple Choice

When a person eats yogurt, the 14 grams of protein will be

• combined into monosaccharides.

• combined into polysaccharides.

• broken down into amino acids.

• broken down into nucleic acids.

Multiple Choice

How does the structure of DNA differ from the structure of RNA?

• DNA is single-stranded, while RNA is a double-helix.

• DNA is a double-helix, while RNA is single-stranded.

• DNA has four base pairs, while RNA has two base pairs.

• DNA has two base pairs, while RNA has four base pairs

Multiple Choice

Which of the following molecules is a monosaccharide?

• glycerol

• glycogen

• amalase

• ribose

Multiple Choice

Glucose is a simple component of a complex carbohydrate. In pasta, glucose is

• a monosaccharide, and the complex carbohydrate could be a polysaccharide.

• a polysaccharide, and the complex carbohydrate could be a protein molecule.

• an amino acid, and the complex carbohydrate is a fat molecule.

• a fatty acid, and the complex carbohydrate is a protein molecule

Multiple Choice

What is the function of the transport and channel proteins of the cell membrane?

• allows large molecules to pass through the cell membrane

• allows small, non-polar molecules to pass through the cell membrane

• identifies the cell and allow for cell-to-cell communication

• stabilizes the fluidity of the cell membrane