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5 Jan 2018
Movement of vesicles within the cell depends on what cellular structures?
centrioles and motor proteins
microtubules and motor proteins
actin filaments and motor proteins
actin filaments and microtubules
actin filaments and ribosomes
Why is water considered a polar molecule?
The negatively charged oxygen atom attracts the positively charged hydrogen atoms.
The oxygen is found between the two hydrogens.
It remains liquid even at very low temperatures.
Both hydrogens are at one end of the molecule, and oxygen is at the other end.
Its electrons spend more time with its oxygen than with either hydrogen.
Which of the following is a major difference between prokaryotic cells and eukaryotic cells?
Prokaryotes have cells while eukaryotes do not.
Eukaryotic cells have more intracellular organelles than prokaryotes.
Prokaryotes are generally larger than eukaryotes.
Prokaryotes are not able to carry out aerobic respiration, relying instead on anaerobic metabolism.
Which of the following is not a necessary component of life?
needs energy
uses DNA for heredity
breathes oxygen
irritability
depends on other living forms
Lipids _____.
contain less energy than proteins and carbohydrates
are made by dehydration reactions
are insoluble in water
contain sulfur polymers
are made from glycerol, fatty acids, and nitrogen
What is biology?
the study of life
the study of genetics
the study of biomes
the study of the environment
the naming and classifying of species
_____ is an example of an element.
Methane
Water
Carbon
Salt
Glucose
With what are saturated fats saturated?
carbon
nitrogen
hydrogen
phosphorus
oxygen
Beryllium's atomic mass is 9, and its atomic number is 4. How many neutrons are found in a beryllium atom?
2
5
13
9
4
Movement of vesicles within the cell depends on what cellular structures?
centrioles and motor proteins |
microtubules and motor proteins |
actin filaments and motor proteins |
actin filaments and microtubules |
actin filaments and ribosomes |
Why is water considered a polar molecule?
The negatively charged oxygen atom attracts the positively charged hydrogen atoms. |
The oxygen is found between the two hydrogens. |
It remains liquid even at very low temperatures. |
Both hydrogens are at one end of the molecule, and oxygen is at the other end. |
Its electrons spend more time with its oxygen than with either hydrogen. |
Which of the following is a major difference between prokaryotic cells and eukaryotic cells?
Prokaryotes have cells while eukaryotes do not. |
Eukaryotic cells have more intracellular organelles than prokaryotes. |
Prokaryotes are generally larger than eukaryotes. |
Prokaryotes are not able to carry out aerobic respiration, relying instead on anaerobic metabolism. |
Which of the following is not a necessary component of life?
needs energy |
uses DNA for heredity |
breathes oxygen |
irritability |
depends on other living forms |
Lipids _____.
contain less energy than proteins and carbohydrates |
are made by dehydration reactions |
are insoluble in water |
contain sulfur polymers |
are made from glycerol, fatty acids, and nitrogen |
What is biology?
the study of life |
the study of genetics |
the study of biomes |
the study of the environment |
the naming and classifying of species |
_____ is an example of an element.
Methane |
Water |
Carbon |
Salt |
Glucose |
With what are saturated fats saturated?
carbon |
nitrogen |
hydrogen |
phosphorus |
oxygen |
Beryllium's atomic mass is 9, and its atomic number is 4. How many neutrons are found in a beryllium atom?
2 |
5 |
13 |
9 |
4 |
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5 Jan 2018
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