Science (Biology) Pre-Prelim Mega Quiz

Science (Biology) Pre-Prelim Mega Quiz

by Johanna Santarossa

Cellular Structures​

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Fill in the Blank

The diagram shows an electron micograph image of part of a cell from the brain of a rat.

Identify the part labelled A.

Open Ended

Name two structures in a cell only visible only under an electron microscope.

Movement of Substances​

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Multiple Choice

The diagrams show a cell in solution X and the same cell after it had been in solution Y for 20 minutes.

What caused the change and what was the relative water potential of solution Y to solution X?

• The change was caused by water diffusing into the cell. The water potential of solution Y is higher than solution X.

• The change was caused by water diffusing into the cell. The water potential of solution Y is lower than solution X.

• The change was caused by water diffusing out of the cell. The water potential of solution Y is higher than solution X.

• The change was caused by water diffusing out of the cell. The water potential of solution Y is lower than solution X.

Open Ended

Transdermal patches are adhesive patched which are stuck on the skin.

The patches contain small amounts of medicines.

The inner protective layer is peeled off and the patch is stuck on the skin.

The diagram below shows a section of a transdermal patch with the protective layer being peeled off.

Suggest how the medicine in the patch reaches the blood stream.

Nutrients​

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Multiple Choice

Three properties of water are listed:

Water cools a surface from which it evaporates.

Water is used as a solvent for many chemicals.

Water is involved in many metabolic reactions.

Which of these properties make water suitable to use in a blood transport system?

• 1 and 2 only

• 1 and 3 only

• 2 only

• 3 only

Multiple Choice

A food gives the following results on testing:

purple colour in the biuret test

blue colour when heated with Benedict's solution

yellow colour with iodine

white emulsion with ethanol

Which nutrients does the food contain?

• fat and protein

• protein and reducing sugar

• reducing sugar and starch

• starch and fat

Multiple Choice

Which chemical element forms part of all protein molecules?

• calcium

• iron

• magnesium

• nitrogen

Enzymes​

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Multiple Choice

In the diagram, what is letter A? 

• product

• substrate

• enzyme-substrate complex

• active site

Multiple Choice

Which of the following best explains why enzymes are necessary for many cellular reactions?

• Enzymes supply the oxygen necessary for the reactions

•  Enzymes change reactants from solid to liquids during the reactions.

• The reactions take up too much space in the cell if the enzymes are missing.

• The reactions are too slow to meet the needs of the cell if enzymes are missing. 

Multiple Choice

Enzymes are...

• nucleic acids

• proteins

• lipids

• carbohydrates

Nutrition in Humans​

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Multiple Choice

The diagram shows some of the organs of the human abdomen.

What would happen if there was a blockage at P?

• Digestion of fats would slow down.

• Insulin from the pancreas would no longer reach the liver.

• Protein digestion in the duodenum would stop.

• The liver would no longer be able to produce bile.

Multiple Choice

Which blood vessel carries most of the absorbed food from the small intestine?

• aorta

• hepatic portal vein

• renal artery

• vena cava

Multiple Choice

Alcohol is broken down in the human body.

Where does the breakdown take place?

• gall bladder

• kidneys

• liver

• stomach

Transport in Humans​

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Multiple Choice

What type of blood vessel is shown in figure number 2?

• vein

• artery

• capilary

• aorta

Multiple Choice

The diagram shows the front view of a human heart.

Letters P, Q, R and S indicate the different chambers of the heart.

Which of the following shows the sequence in which a blood cell returning from other parts of the body passes through the four chambers of the heart?

• R-S-P-Q

• Q-S-R-P

• P-R-Q-S

• S-R-P-Q

Multiple Choice

The figure shows pressure changes in the aorta, left atrium, left ventricle during one complete heartbeat.

What causes the increase in pressure in point X?

• contraction in left atrium

• contraction in left ventricle

• relaxation in left atrium

• relaxation in left ventricle

Respiration​

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Multiple Choice

The composition of the oxygen in inhaled air is

• 21%

• 16%

• 4%

• 0.04%

Multiple Choice

What disease results in the destruction of the alveolus making breathing very difficult?

• lung cancer

• emphysema

• cancer

Reproduction in Humans​

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Multiple Select

what is/are the function(s) of testes?

• produce sperms

• produce testosterone

• produce progesterone

• keep a lower body temperature

Multiple Choice

The diagram below represents structures found in the female reproductive system. If the areas labeled A were completely blocked on both sides, the most likely result would be that

• egg production would stop

• sperm production would stop

• fertilization would not occur

• an embryo would develop

Nutrition in Plants​

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Multiple Select

Which part of the plant takes in carbon

dioxide from the air for photosynthesis

• Root

  hair

• stomata

• leafveins

• sepals

Multiple Choice

The equation for photosynthesis is

• oxygen + water --> glucose + carbon dioxide

• oxygen + glucose --> carbon dioxide + water

• carbon dioxide + water --> glucose + oxygen

• carbon dioxide + glucose --> oxygen + water

Transport in Plants​

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Multiple Choice

The rate of translocation in the phloem was observed to decrease steadily after a plant was placed in an environment without oxygen for several minutes. Why did this happen?

• The cells in the plants stop respiring.

• The xylem no longer takes in water for the plant.

• Active transport of mineral salts can no longer occur.

• The plant can no longer synthesize sugars to provide energy.

Multiple Choice

Why does temperature have an effect on the rate of photosynthesis?

• Higher temperature allows carbon dioxide to diffuse into the leaves faster.

• Higher temperature allows water to be transported to the leaves faster.

• Higher temperature allows the stomata to open wider.

• Higher temperature allows the enzymes to function better.

Reproduction in Plants​

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Multiple Choice

Which of the following describes Self-Pollination?

• Pollen grains are transferred from anther to stigma of another flower.

• Pollen grains are transferred from filament to stigma of the same flower.

• Pollen grains are transferred from anther to stigma of the same flower.

• Pollen grains are transferred from stigma to anther of the same flower.

Multiple Choice

Which is true about Asexual reproduction?

• Insects are needed to transfer pollen.

• New plants grow from seeds. 

• Offspring are genetically identical to their parent.

• Two types of gametes are involved. 

Multiple Choice

Gametes are produced in _____ .

• 1 and 3

• 1 and 4

• 2 and 3

• 2 and 4

​Nervous System

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Multiple Choice

What are the two divisions of the nervous system?

• Central and Lower nervous systems

• Central and Peripheral nervous systems

• Lower and Cerebral nervous systems

• Central and Muscular nervous systems

Multiple Choice

The space between an axon of a neuron that is communicating with a dendrite of another neuron is called a ________________.

• Neuron

• Brain message

• Stimulus

• Synapse

Multiple Choice

What is true about nerves?

• Nerves all have the same job - to send messages TO the brain and spinal cord.

• Nerves all have the same job - to send messages AWAY the brain and spinal cord.

• Nerves all have different jobs -some only send messages TO to the brain and spinal cord with other only send messages AWAY from the brain and spinal cord.

Human Eye​

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Multiple Choice

The first part of the eye that light hits. 

• lens

• cornea

• pupil

• retina

Multiple Choice

The vitreous humor is a liquid inside of your eye.  When light passes from the lens into the vitreous, the light changes medium.  What happens to light because of this medium change? 

• Light is transmitted.

• Light is reflected.

• Light is refracted.

• Light is absorbed. 

Multiple Choice

These are the structures in the eye that perceives color

• Rods

• Cones

• Blind Spot

• Pupil

Hormones​

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Multiple Choice

Insulin and glucagon are produced by

• the liver

• the pancreas

• the kidneys

Multiple Choice

A hormone is

• a chemical substance produced by a gland and carried by the lymph.

• an enzyme produced by a gland and carried by the blood.

• a chemical substance produced by an organ and carried by the blood.

• a chemical substance produced by a gland and carried by the blood.

Heredity​

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Multiple Choice

This trait always shows up in an organism when the allele is present

• dominant allele

• codominance

• probability

• recessive allele

Multiple Choice

An organism's physical appearance or visible traits

• fertilization

• genotype

• phenotype

• homozygous

Multiple Choice

In peas, yellow pod color is dominant to green pod color. Two heterozygous parents are crossed. What are the chances that the offspring will have green pods?

• 25%

• 50%

• 75%

• 100%

​Molecular Genetics

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Multiple Choice

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases

• the order (sequence) of the nitrogen bases

• the color of the nitrogen bases

• the frequency (number) of nitrogen bases

Multiple Choice

TRANSCRIPTION:

Transcription occurs in the:

• nucleus

• cytoplasm

• ribosomes

• kitchen

Multiple Choice

In transcription, a DNA template strand is used to form mRNA.

• True

• False