Beryllium’s atomic mass is 9, and its atomic number is 4. How many neutrons are found in a beryllium atom?
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_ is an example of an element.
Water
Calcium
Glucose
Salt
The four most common elements found in living organisms are __ _.
nitrogen, oxygen, phosphorus, and carbon
carbon, oxygen, nitrogen, and hydrogen
carbon, oxygen, potassium, and calcium
oxygen, calcium, hydrogen, and carbon
In order to have a positive charge, an atom must have _.
more protons than electrons
more electrons than protons
more neutrons than protons
more protons than neutrons
Beryllium’s atomic mass is 9, and its atomic number is 4. How many neutrons are found in a beryllium atom?
9
13
4
5
An atom’s _ are found in its nucleus.
neutrons and protons
protons only
neutrons and electrons
electrons, protons, and neutrons
The hydrogen and oxygen atoms of a water molecule are held together by bonds.
ionic
covalent
True or False:
The simplest forms of carbohydrates are known as single sugar, simple sugar, or monosaccharaides.
What does disaccharide mean: _
one sugar molecule
two sugar molecules
many sugar molecule
True or False: _ _
Disaccharides can be broken down into their simple sugars through a process called
hydrolysis.
Where we can find peptide bonds: in_
a) Sugar (carbohydrates) b) Protein (amino acids) C) Fat (lipids)
Starch is a storage of that consist of glucose molecules in plants.
polysaccharides (complex sugar)
monosaccharaides (simple sugar)
Lipid means: _ _
a) Sugar b) Protein C) Fat
True or False:
Saturated fats are liquid and unsaturated fats are solid.
Oleic acid is a fatty acid that occurs naturally in many animal and vegetable fats and oils. What can you tell about oleic acid just by looking at its structure?
Oleic acid is an unsaturated fatty acid.
Oleic acid is a saturated fatty acid.
Hormones, muscles, enzymes, tears, nails, hairs, hemoglobin (in blood) are made of
_ Sugar b) Protein C) Fat
Lemon juice, vinegar, and sour milk are examples of: _ _
a) Acids b) Base
True or False: Acids neutralize bases and bases neutralize acids.
Substance with a pH 7 is considered neutral (as water), a solution with a pH greater than 7 (9-14) is considered_ _
a) acidic b) basic
True or False: _
An acid is a substance that releases (donates) a hydrogen ion (H+) in solution.
True or False:
A base is a substance that releases (donates) a hydroxide ion (OH-) in solution.
True or False: _
Carbohydrates (sugars, starch) and proteins are water soluble (can get dissolved in water)
and fats (lipids) are not water soluble.
True or False: _ Water is the universal solvent.
In the following reaction, galactose is a .
galactose + glucose → lactose + water
polysaccharide
monomer
polymer
protein
is a steroid.
Butter
Sucrose
Amino acid
Estrogen (female sex hormone)
What is the name given to the reaction that breaks peptide bonds (in protein chain)?
dehydration
hydrolysis
Nucleic acids are polymers of monomers.
monosaccharide
fatty acid
DNA
nucleotide
DNA nucleotides include .
uracil, guanine, adenine, and cytosine
thymine, guanine, adenine, and cytosine
thymine, uracil, adenine, and cytosine
thymine, guanine, adenine, and uracil
Which of the following is a function of the Golgi apparatus?
digestion of organic matter inside the cell
protein modification and delivery
drug detoxification
cell respiration
Questions 29-32 match the letter of the organelle next to its corresponding function.
A) Ribosomes B) Microtubules C) Plasma Membrane D) Mitochondria
Flexible boundary layer for ALL cells; regulates what comes in or out of the cell.
Network of fibers inside the cytosol (cytoplasm) that helps cell’s movements.
The site of protein synthesis.
The site of cellular respiration and cellular energy (ATP) formation.
True or False ———
Smooth Endoplasmic Reticulum (ER) is the site of lipid synthesis and Rough Endoplasmic Reticulum (ER) is the site of protein synthesis.
are the major lipids of plasma membranes.
Steroids
Fatty acids
Starches
Phospholipids
Most homeostatic mechanisms depend on .
positive feedback
negative feedback
Questions 36-40 match the letter of given term next to its corresponding definition.
A. active transport B. Pinocytosis C. Facilitated diffusion
D. Antiport E. Symport
a cell engulfs fluids forming an invagination and suspend it within a small vesicle.
carrier moves solute down its concentration gradient with no need of ATP molecule
carrier moves solute through a membrane up its concentration gradient uses ATP molecule
carries two or more solutes simultaneously in same direction (cotransport)
carries two or more solutes in opposite directions (counter transport)
Questions 41-50, match the letter to its corresponding number
Column A Column B
Gluteal 41. Wrist
Axillary 42. Front Surface
Brachial 43. Armpit
Anterior 44. Buttocks
Carpal 45. Thigh
Cephalic 46. Back
Cervical 47. Neck
Crural 48. Arm
Femoral 49. Leg
Dorsal 50. Head
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