Answers MPS SC201-CR Biology S1 2023-24Meiosis

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DNA replication occurs during which phase of the eukaryotic cell cycle?

S phase

G1 phase

G2 phase

M phase

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Which is the final electron acceptor in the electron transport chain of cellular respiration?

NADH

FADH2

oxygen

carbon dioxide

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?

Which statement best describes the overall change that occurs as a result of mitosis?

One cell becomes two cells that have identical copies of DNA.

One cell becomes two cells that have different copies of DNA.

Two cells become two cells that have identical copies of DNA.

Two cells become two cells that have different copies of DNA.

Why is the Calvin cycle considered a dark reaction?

It occurs only at night.

It requires an absence of light.

It turns the plant dark green.

It can proceed in the dark.

A new multicellular organism has been discovered, and scientists want to study the organism’s cell structures, including organelles. Which microscope should they use?

scanning electron microscope

transmission electron microscope

compound light microscope

simple microscope

Which best illustrates the result of the process of meiosis?

A pea plant has the same flower color as its parent plants.

A daughter looks different from both her mother and her father.

A cheetah cub has very similar fur to its mother.

A Labrador puppy looks exactly like its father.

Which statement best distinguishes the light-dependent (L-D) reactions from the light-independent (L-IND) reactions?

The L-D reactions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma.

The L-D reactions occur in the cytoplasm, and the L-IND reactions occur in the chloroplast.

The L-D reactions occur in the chloroplast, and the L-IND reactions occur in the mitochondria.

The L-D reactions occur in the stroma, and the L-IND reactions occur in the cytoplasm.

Which part of cell division is different in plant and animal cells?

cytokinesis

anaphase

mitosis

eukaryotic

What is carbon fixation, and how does it relate to photosynthesis?

It is the absorption of CO2 from the air, and it occurs during the light-dependent reactions.

It is the reduction of CO2, and it occurs during the Calvin cycle.

It is the conversion of CO2 into organic compounds, and it forms 3-PGA.

It is the production of CO2 during regeneration, and it forms RuBP.

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.

Which term identifies a light-absorbing pigment?

photosystem

ferredoxin

thylakoid

chlorophyll

Which series of diagrams correctly represents the order of mitosis?

The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the chromosomes line up at the center. In step 3, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 4, the cell is divided.

The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the cell is divided. In step 3, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 4, the chromosomes line up at the center.

The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the cell is divided. In step 3, the chromosomes line up at the center. In step 4, the chromatids separate from each other and are pulled to opposite ends of the cell.

The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 3, the chromosomes line up at the center. In step 4, the cell is divided.

Which best defines a diploid cell during meiosis?

a cell that has double the number of chromosomes as the parent cell

a cell that has half the number of chromosomes as the parent cell

a cell that has double the number of chromosomes as the daughter cell

a cell that has half the number of chromosomes as the daughter cell

Tissue cultures (samples of cancer cells) are taken from cancer patients, and the cells are then grown in a laboratory. What is the purpose of growing cancer cells in a laboratory?

to test medicinal treatments before giving them to patients

to replace cancer cells with healthy cells

to provide evidence of cancer cells in the patient

to stop the cancer from growing in the patient

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