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NSQ SCIENCE QUIZ > GENERAL BIOLOGY > Flashcards

GENERAL BIOLOGY Flashcards

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Biology 101 flashcards
1
Q

How do we become part of the carbon and oxygen cycle?

a. We take in carbon dioxide and mixed with other gases.

b. We breathe in oxygen and release carbon dioxide.

c. We burn substances present in the environment.

d. We burn fuel which releases carbon dioxide.

A

b. We breathe in oxygen and release carbon dioxide.

During cellular respiration, we need oxygen to burn the food that we take in order to release the chemical energy of ATP. Carbon dioxide is one of the waste products during respiration. Since it is a waste, it is eliminated out of the body.

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2
Q

Which of the following react with water vapor in the atmosphere and form acid rain?

a. SO2 and NO2

b. HCl and NO2

c. O2 and CO2

d. CO2 and SO2

A

d. CO2 and SO2

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2
Q

Which kind of relationship exists between a tree that offers a safe nesting site for birds and that eat the insects that cause damage to trees?

a. Competition

b. Mutualism

c. Commensalism

d. Cooperation

A

b. Mutualism

Mutualism is a relationship where two organisms benefit from each other.

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3
Q

Why do mountain climbers use oxygen equipment when on top of high mountains?

a. There is less nitrogen in the air at great heights.

b. There is no air at the top of high mountains.

c. There is less CO2 in the air at great heights.

d. There is less oxygen in the air at great heights

A

d. There is less oxygen in the air at great heights

Oxygen gets thinner as the altitude increases.

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4
Q

Which of the following cannot be classified as an ecosystem?

a. Herbarium

b. Terrarium

c. Aquarium

d. A pond

A

a. Herbarium

One of the components of the ecosystem is the biotic components. Biotic components include producers, consumers, and decomposers interacting with one another. Herbarium is made up only of plants thus cannot be classified as ecosystem

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5
Q

Which of the following ratios will be produced by male and female who both have Bb genotypes?

a. 1 BB: 2 Bb: 2 bb

b. 1 BB: 2 Bb: 1 Bb

c. 1 BB: 2 Bb: 1 bb

d. 2 BB: 1 Bb: 2 bb

A

c. 1 BB: 2 Bb: 1 bb

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6
Q

7) Which of the following ratio will be produced by parent with Tt genotypes?

a. 1:2:2

b. 1:2:1

c. 1:1:1

d. 2:1:2

A

b. 1:2:1

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7
Q

What is the difference between an RNA and DNA?

a. RNA is a single strand and the sugar is deoxyribose while DNA is a double strand and the sugar is ribose.

b. RNA is a single strand and the sugar is ribose while DNA is a double strand and the sugar is deoxyribose.

c. DNA is a single strand and the sugar is deoxyribose while RNA is double strand and the sugar is ribose.

d. RNA is a single strand and the sugar is ribose while RNA is a double strand and the sugar is deoxyribose.

A

b. RNA is a single strand and the sugar is ribose while DNA is a double strand and the sugar is deoxyribose.

Two ways to differentiate RNA and DNA is through their structure and sugar. DNA is a double stranded molecule and it has deoxyribose as its sugar. On the other hand, RNA is single stranded molecule and has ribose as its sugar.

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8
Q

What is the organic base found only in RNA?

a. Thymine

b. Guanine

c. Cytosine

d. Uracil

A

d. Uracil

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9
Q

What law states that only one trait is physically expressed while the other is hidden in a heterozygous gene pair?

a. Incomplete Dominance

b. Dominance and recesiveness

c. Independent assortment

d. Codominance

A

b. Dominance and recesiveness

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10
Q

How many autosomes and what type of sex chromosomes are normally present in human egg cell?

a. 23 + X

b. 44 + XY

c. 22 + X

d. 23 + Y

A

c. 22 + X

Human egg cell is haploid thus it contains 23 chromosomes, 22 of which are body chromosomes and 1 sex chromosome. Since it is a female, it will only have an X as its sex chromosomes.

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11
Q

Which of the following pancreatic fluids is responsible for the breakdown of fat?

a. Lipase

b. Amylase

c. Pepsin

d. Trypsin

A

a. Lipase

Amylase breaks down carbohydrates, pepsin and trypsin breakdown protein thus lipase breaks down fats.

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12
Q

Which of the following statements is not true for fungi?

a. They are parasitic organisms.

b. They obtain food from decaying organic matters.

c. They are photosynthetic organisms.

d. Some have mutual relationships with other organisms.

A

c. They are photosynthetic organisms.

They lack chlorophyll which makes them unable to perform photosynthesis.

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13
Q

Which of the following is considered a carnivorous plant?

a. Pitcher plant

b. Mangrove trees

c. Cactus

d. Fire tree

A

a. Pitcher plant

It has a digestive fluid in its pitcher-like structure, a modified leaf, which digest the insects trapped by the plant.

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14
Q

Which of the following cellular parts are present in both plans and animal cells?

a. Chloroplast

b. Cell Wall

c. Nucleus

d. Centrioles

A

c. Nucleus

Chloroplast and cell wall are present only in plant cells while centrioles are for animals only. Nucleus is present in both of them being eukaryotic organisms.

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15
Q
A
15
Q

Which of the following are examples of active transport processes?

a. Diffusion and osmosis

b. Anabolism and catabolism

c. Photosynthesis and respiration

d. Endocytosis and exocytosis

A

d. Endocytosis and exocytosis

Only choices A and D are transport processes. Diffusion and osmosis are passive transport. Anabolism, catabolism, photosynthesis, and respiration are not transport processes.

16
Q

17) Which of the following statements is/are true?
I. In passive transport, substances move along concentration gradient.
II. In active transport, substances move against concentration gradient.

a. Statement I only

b. Statement II only

c. Both statements I and II

d. Neither statements I nor II

A

c. Both statements I and II

Passive transport is the movement of substances along the membrane from the region of high concentration to a region of lower concentration thus move along concentration gradient. Active transport on the other hand is the movement from the area of low concentration to higher concentration thus moving against the concentration gradient.

17
Q

Which of the following does not describe the chloroplast?

a. It contains green pigments.

b. It is a double membrane organelle.

c. It is abundant in animal cell.

d. It has grana and thylakoids.

A

c. It is abundant in animal cell.

Chloroplast is absent in animal cell.

18
Q

Which of the following requirements for photosynthesis is not needed in the light reaction phase?

a. Light energy

b. Chlorophyll

c. Water

d. Carbon dioxide

A

d. Carbon dioxide

Carbon dioxide is a raw material in the dark reaction phase of photosynthesis.

18
Q

Which of the following is the function of root hairs in plants?

a. They transport sugars to the different parts of the plants.

b. They transport water to all the parts of the plants.

c. They provide more surface area for absorption.

d. They absorb water from the ground.

A

c. They provide more surface area for absorption.

Root hairs increase the surface area for absorption of water and dissolved minerals from the soil.

19
Q

What strong connective tissue attaches a skeletal muscle to a bone?

a. Septum

b. Tendon

c. Ligament

d. Cartilage

A

b. Tendon

19
Q

What hormones assists liver cells to convert glycogen into glucose?

a. Insulin

b. Thyroxin

c. Glucagon

d. Adrenalin

A

c. Glucagon

Glucagon controls transformation of liver glycogen into blood glucose thus raises blood glucose level.

20
Q

How could a leaf be identified as either monocot or dicot?

a. Pressing it to know whether it soft or hard.

b. Looking at its shape and size.

c. Examining its venation.

d. Observing stomata and guard cells.

A

c. Examining its venation.

One of the differences between monocot and dicot is their venation. Monocot plants have parallel venation while dicot plants have netted venation.

21
Q

Which of the following is the characteristic of a prokaryotic cell?

a. Presence of mitochondria.

b. Lack of membrane- enclosed nucleus.

c. Presence of nucleus with no DNA.

d. Lack of ribosomes.

A

b. Lack of membrane- enclosed nucleus.

Prokaryotic cells are said to be to have no “true nucleus” because of lack of nuclear membrane. The nuclear parts are scattered along the cytoplasm together with cytoplasmic organelles

22
Q

Which of the following does NOT comprise a logical hierarchy of organization?

a. Molecules, atoms, organelles, tissues, systems

b. Molecules, cells, tissues, organ systems, populations

c. Cells, tissues, organs, organ systems, organisms

d. Organisms, populations, communities, biomes, biosphere

A

a. Molecules, atoms, organelles, tissues, systems

All choices are arranged in a hierarchy of organization from lowest/smallest level to highest/largest level. However in choice A, atoms are smaller units than molecules. Atoms make up the molecules.

23
Q

Which of the following statements is not true of the Calvin Cycle of photosynthesis?

a. The energy source utilized is the ATP and NADPH obtained through the light reaction.

b. The light reactions begin soon after sundown and end before sunrise.

c. The 5-carbon sugar RuBP is constantly being generated.

d. One of the end products is glyceraldehyde phosphate.

A

b. The light reactions begin soon after sundown and end before sunrise

Calvin Cycle may take place with or without sunlight.

24
Q

How many chromosomes are there in cells if there are 20 centromeres?

a. 20

b. 30

c. 40

d. 50

A

a. 20

Centromeres hold sister chromatids together. Sister chromatids make up one chromosome thus the number of centromeres is the same as the number of chromosomes.

NSQ SCIENCE QUIZ (4 decks)

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