32 Questions Due Date: April 26

Science

Chemistry

Cells

Bones

Muscle

Human Bio and Science:

Question-1

Which of the following best describes the evolutionary advantage of bipedalism?

a. allows an organism to have precise control over the action of the thumb and fingers

b. frees the hands for carrying objects

c. results in improved eye-hand coordination

d. in early humans, allowed for complex motions associated with the use of tools

e. increases the chance that an organism can communicate through the written word

Human Bio and Science:

Question 2

Why would it be difficult for a chimpanzee to suture a wound?

a. It doesn’t grip a needle at the tip of the fingers.

b. It has no opposable thumb.

c. Its brain is too small to understand.

d. It lacks language to learn how.

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Human Bio and Science:

Question 3

The process by which living organisms maintain a fairly constant internal environment despite changes in the external environment is known as

a. metabolism.

b. biology.

c. homeostasis.

d. evolution.

e. chemistry.

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Human Bio and Science:

Question 4

"Molecules of life" include all of the following

a. water, proteins, lipids, nucleic acids, carbohydrates.

b. proteins, saturated fats, monosaccharides but not polysaccharides.

c. lipids and proteins only.

d. any non-carbon base molecule.

e. non-sugar carbohydrates, proteins, lipids, water.

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Human Bio and Science:

Question 5

Humans possess several characteristics that, when taken together, differentiate them from other organisms. These characteristics include

a. opposable thumbs.

b. capacity for complex language.

d. bipedalism.

d. large brain relative to body mass.

e. All of the above are correct.

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Human Bio and Science: Question 6

Which of the following is correct in terms of level of organization from least to most complex?

a. cells, tissue, organ, organ system, organism

b. atoms, tissue, organs, population

c. atoms, cells, organism, organ systems

d. tissue, organ systems, population, cells

Chemistry of Living Things:

Question 7

What chemical bond is based on the unequal sharing of electrons?

a. Covalent bond

b. Ionic bond

c. Hydrogen bond

d. Strong bond

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Chemistry of Living Things:

Question 8

Which of the following is an organic compound?

a. Water

b. Carbon dioxide

c. Glucose

d. Ferric oxide

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Chemistry of Living Things:

Question 9

What carbohydrate is used most often as an energy source in cells?

a. Glucose

b. Maltose

c. Sucrose

d. Cellulose

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ANSWER

Chemistry of Living Things:

Question 10

Where is genetic information stored in mammals?

a. DNA

b. RNA

c. Proteins

d. Carbohydrates

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Chemistry of Living Things:

Question 11

Isotopes have either more or fewer _____ than the usual number for their element.

a. electrons

b. protons

c. neutrons

d. atoms

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Cell Structure, Function, and Systems:

Question 12

What is the major difference between eukaryotic cells and prokaryotic cells?

a. Prokaryotic cells have cilia.

b. Eukaryotic cells have membrane-bound organelles.

c. Prokaryotic cells have chromosomes.

d. Eukaryotic cells do not have a nucleus.

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Cell Structure, Function, and Systems:

Question 13

Which biological molecule is not a part of a cell’s membrane?

a. Phospholipids

b. Cholesterol

c. Proteins

d. Nucleic acids

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Cell Structure, Function, and Systems:

Question 14

What is the passive transport of water across cell membranes called?

a. Diffusion

b. Osmosis

c. Facilitated transport

d. Active transport

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Cell Structure, Function, and Systems:

Question 15

What organelle controls nearly all cell functions?

a. The nucleus

b. The endoplasmic reticulum

c. Ribosomes

d. Mitochondria

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Cell Structure, Function, and Systems:

Question 16

In humans, what metabolic process liberates most of the energy from fuel sources?

a. Glycolysis

b. The citric acid cycle

c. The electron transport system

d. Anabolic metabolism

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Skeletal System:

Question 17

Which of the following is a primary feature of the skeletal system?

a. Mature bones never change during adulthood.

b. Ligaments attach bones together.

c. Bones are a storage site for sodium.

d. Arthritis is weakening of bone tissue.

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Skeletal System:

Question 18

Which type of cartilage forms the embryonic structures that later become bones?

a. Elastic cartilage

b. Fibrocartilage

c. Embryonic cartilage

d. Hyaline cartilage

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Skeletal System:

Question 19

What hormone causes calcium to be released from bone?

a. PTH

b. Calcitonin

c. Growth hormone

d. Thyroid hormones

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Skeletal System:

Question 20

What type of joint is the most freely movable?

a. Fibrous

b. Cartilaginous

c. Articulations

d. Synovial

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Skeletal System:

Question 21

Which of the following is a feature of the axial skeleton?

a. The pelvic girdle is a component.

b. It protects the spinal cord.

c. The joints of the axial skeleton are immovable.

d. Its bones are categorized as long bones.

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Muscular System:

Question 22

What is the primary contractile unit of muscle?

a. The Z line

b. The muscle fascicle

c. The sarcomere

d. Myosin

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Muscular System:

Question 23

Which of the following is true about slow-twitch muscle fibers?

a. They have few mitochondria.

b. They have a large number of blood capillaries.

c. They contain no myoglobin.

d. They rely on glycolysis.

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Muscular System:

Question 24

Isotonic muscle contractions

a. occur when a muscle shortens while maintaining a constant force.

b. result in no movement of some part of the skeleton.

c. do not result in movement of a limb.

d. only function to stretch tendons.

e. occur when muscles lengthen as a constant force is applied.

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Muscular System:

Question 25

Which of the following occurs during contraction?

a. Calcium enters the sarcoplasmic reticulum.

b. Myosin heads form cross-bridges with actin.

c. Troponin-tropomyosin binds ATP.

d. Lactic acid serves as the primary energy source.

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Muscular System:

Question 26

Skeletal muscle groups that work together to create the same movement are referred to as

a. involuntary.

b. antagonistic.

c. synergistic.

d. sarcomeres.

e. myofibrils.

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Muscular System:

Question 27

Stimulation of acetylcholine release cause skeletal muscles to

a. stimulate smooth muscles to relax.

b. lose the ability to contract.

c. release calcium ions.

d. become excited.

e. be unchanged and remain in a relaxed state.

Muscular System: Question 28

T, or transverse, tubes in skeletal muscle function to:

a. transport calcium ions throughout the muscle cells.

b. allow actin and myosin filaments to slide over each other.

c. promote electrical impulse to travel deep into the cell and move quickly.

d. help to decrease the amount of ATPs produced.

e. convert glucose to lactic acid, which helps muscles relax.

Muscular System: Question 29

When an electrical impulse traveling along a motor neuron arrives at a neuromuscular junction,

a. there is an increase in the secretion of acetylcholine at the neuromuscular junction.

b. calcium is transported back to the sarcoplasmic reticulum.

c. sliding of actin and myosin filaments is inhibited.

d. myosin-actin cross-bridges are destroyed.

e. a new electrical impulse is generated that returns the message to the original nerve.

Muscular System: Question 30

Following electrical stimulation of a muscle cell, calcium functions to:

a. stimulate the enzymes that produce ATP.

b. bind to the protein troponin.

c. leak out of the muscle cell to re-establish the membrane potential.

d. breaks down acetylcholine.

e. maintain the relaxed state of the muscle.

Muscular System: Question 31

The primary energy source used by muscle cells to generate ATP is

a. steroids.

b. ATP.

c. glucose.

d. starch.

e. fatty acids.

Muscular System: Question 32

At the end of the contractile period, energy from the breakdown of ATP is used to

a. transport calcium back into the sarcoplasmic reticulum.

b. repair any muscle damaged during contraction.

c. digest energy sources to generate new ATP for the next round of contractions.

d. produce lactic acid.

e. all of the above are correct.