Biology Final Exam

A vibrant illustration depicting the process of photosynthesis, including chloroplasts, light reactions, and glucose formation, combined with elements of cell biology like DNA strands and chromosomes.

Photosynthesis and Cell Biology Quiz

Test your knowledge of key concepts in photosynthesis and cell biology with our comprehensive quiz! Covering a range of topics, this quiz is perfect for students looking to validate their understanding of essential biological processes.

Topics covered include:

Photosynthesis Mechanisms
Cellular Processes
Genetic Code and Reproduction
Enzymatic Functions

63 Questions16 MinutesCreated by LearningLeaf392

عدد الاسئلة 60

الزمن: ساعة وربع

عدد الاسئلة 60

الزمن: ساعة وربع

What is the primary function of the light reaction of photosynthesis?

To produce energy rich glucose from carbon dioxide and water

To produce ATP and NADPH

To produce NADPH used in resperation

To use ATP to make glucose

The enzyme that fixes carbon dioxide is called

Oxygenase ribulose bisphosphate carboxylase

Glyceraldehyde-3-phospate(G3P)

PEP carboxylase (PEPcase)

Lactate dehydrogenase

High-energy photons

Have long wavelengths

Have short wavelengths

Are more likely to produce red light then blue light

Cannot be absorbed

RuBP carboxylase- oxygenase (Rubisco) present in chloroplast

True

False

Nucleosides are same as nucleotides

False

True

Photosynthesis involves two sets of reactions known as the light reactions and the Calvin cycle

True

False

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones?

Catalysis

Metabolism

Anabolism

Catabolism

Where does the Calvin cycle take place

Stroma of the chloroplast

Thylakoid membrane

Cytoplasm surrounding the chloroplast

Chlorophyll molecule

When a cell is placed in a hypertonic solution water leaves the cell toward the area of higher solute concentration

True

False

If a DNA sample contains 10 % adenine what is the percentage of cytosine in the sample

10%

40%

20%

80%

Consider a polysaccharide consisting of 828 glucose molecules the total hydrolysis of the polysaccharide would result in the production of

827 water molecules

828 glucose molecules and no water molecules

827 glucose molecules and 827 water molecules

828 glucose molecules and 828 water molecules

Interphase

Is the same as prophase..metaphase...anaphase ...and telophase

Is composed of ..G1 . S. and G2 stages

Is the majority of the cell cycle

Both B & C are correct

The nitrogenous base adenine is found in all members of which of the following groups

Proteins , carbohydrates , and ATP

ATP, RNA, and gene

Glycerol, glucose, and DNA

Fat, ATP, and proteins

In animals, somatic cells are produced by mitosis and .............. Are produced by meiosis

Gametes

Clones

Zygotes

Diploid cells

What is a karyotype

An uncontrolled cell division

A segment of DNA that controls the production of a portein

An arrangement of every pair of homologous chromosomes within a cell organised according to size and shape

A system of classifying cell nuclei

The centromere is a region in which

Chromatids are attached much closely to one another

Spindle microtubules are organized from

Chromosomes are grouped during telophase

New spindle microtubules form

An exchange of segments of DNA between chromatids occurs during mitosis

True

False

DNA polymerase III catalyzes the elongation of a DNA strand in the 3" -- 5" direction

True

False

In the genetic code there are three start signals and one stop signal

True

False

After telophase I of meiosis , what is the chromosomal makeup of each daughter cell?

Diploid, and the chromosomes are composed of two chromatids

Haploid, and the chromosomes are composed of two chromatids

Diploid. And the chromosomes are composed of single chromatid

Haploid,and the chromosomes are composed of single chromatid

Codons

Are triplets coding for a single amino acid

Are the alphabet of the genetic language

Each have only one meaning

All correct

In humans the ovum (egg cell) has 23 chromosomes : 22 autosomes and one x or y chromosomes

True

False

During DNA replication , this enzyme ............., catalyzes the elongation of new DNA by adding nucleotides to the 3' end of the previous nucleotide

Helicase

DNA polymerase III

DNA ligase

ATP synthase

At what part of the cell cycle would you see a chromosome that looks like this?

Metaphase

S phase

Telophase

Anaphase

Cells that do a lot of active transport have many ...........

Mitochondria

Nuclei

Chloroplasts

Plasmids

Mitosis is made from two divisions

True

False

In the double helix structure of nucleic acids . Cytosine hydrogen bonds to guanine

False

True

The regeneration of ATP from ADP and phosphate is an endergonic

False

True

Organisms that can exist with light as an energy source and an inorganic form of carbon and other raw materials

Are called photoautotrophs

Are called heterotrophs

Are best classified as decomposesrs

Do not exist in nature

..................produces gametes and reduces of chromosomes by half

Mitosis

Interphase

Cytokineses

Meiosis

Electrons of chlorophyll molecule in the reaction center become excited . Escape and move to a nearby electron acceptor molecule

True

False

The chlorophyll a at the reaction center labelled as 3 is most effectively absorbs light of wavelength.........

700nm

680

750nm

450nm

Chromosomes become attached to the spindle at prometaphase of mitosis

True

False

The main photosynthetic pigment is chlorophyll (a) which has an olive green( yellow green) color

True

False

Complementary nitrogenous bases in the DNA molecule are covalently bonded to each other

True

False

Which stage is most associated with a cell is unable to divide again , such as a muscle or a nerve cell

M phase

G1 phase

G2 phase

G0 phase

What is the function of topoisomerase ?

Covalently adding nucleotides to the new stands

Stabilizing single-strand DNA at the replication fork

Unwinding of the double helix

Relieving overwinding in the DNA ahead of the replication fork

If the sequence of bases in DNA is TAGC , then the sequence of bases in RNA will be

ATCG

AUCG

UAGC

Two answers are correct

In the figure below .number 1 represents

Homologous chromosomes

Chiasma

Sister chromatid

Centromere

On earth . Plants are the only producers of food

True

False

Why the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis are different?

Other pigments absorb light in addition to chlorophyll a

Green and yellow wavelength inhibit the absorption of red and blue wavelengths

Aerobic bacteria take up oxygen which changes the measurement of the rate of photosynthesis f

Bright sunlight destroys photosynthetic pigments

During light reaction of photosynthesis . The enzyme used in reducing NADPH is NADPH reductase

True

False

Sister chromatids separate in

Prophase I

Meiosis I

Interphase

Meiosis II

The leading and the lagging strands differ in that the leading strand is synthesized continuously , whereas the lagging strand is symtthesized in short fragments that are joined together

True

False

Helicase removes the RNA nucleotides from the primer and adds DNA nucleotides to the 3' end of okazaki fragments

True

False

In the Watson and Crick model of DNA , the "steps" of the ladder are composed of

Sugars

A purine and a pyrimidine

Two purines

A sugar and a phosphate molecule

a plant has a unique photosynthetic pigment . The leaves of this plant appear to be reddish yellow .what wavelength of visible light are not being absorbed by this pigment ?

Red and yellow

Blue and violet

Green and yellow

Green. blue. And violet

More hydrogen ions are found within the thylakoid space then in the stroma

True

False

Cells that do not have cell walls are

Animal cells

Plant cells

Fungai cells

Prokaryotic cells

Nucleotides contain all of the following expect

A phosphate group

A 5-carbon sugar

A nitrogen base

Proteins

If the cell whose nuclear material is shown in the above figure continues toward completion of mitosis, which of the following events would occur next?

Spindle fiber formation

Nuclear envelope breakdown

Formation of telophase nuclei

Synthesis of chromatids

Meiosis is a process by which

DNA is replicates

Cells grow in size

Cytokineses occurs

a cell's nucleus divides

Okazaki fragments are characteristic of DNA replication of the

Leading

Lagging

RNA

ALL answers are correct

The strands that make up DNA are antiparallel .this means that

One strand is positively charged and the other is negatively charged

The twisting nature of DNA creates nonparallel strands

One strand contains only purines and the other contains only pyrimidines

The 5' to 3' direction of one strand runs opposite to 5' to 3' direction of the other strand

Multiple sites of replication are present on each chromosome in Eukaryotic cells

True

False

Which of the following terms related to synapsis and chiasmata

Haploid

Crossing over

Autosomes

Fertilization

After G2 phase of the cell cycle, the plant cell has a pair of centrosomes each with pair of centrioles

True

False

This figure represents

A plant cell at prophase II

A plant cell at prophase I

An animal cell at prophase II

An animal cell at prophase I

Which stage of the cell cycle is cell growth and replication of the organelles

M phase

G1 phase

G2 phase

S phase

Which term is correct about methyl group

Polar

Water soluble

Hydrophobic

Hydrophilic

What is the net gain in the calvin cycle ?

Glycerol

G3P (glyceraldehyde 3- phosphate)

RuBP (ribulose biphosphate)

Glucose

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