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Bio 10L (1st midterm) pt.1

Terms in this set (19)

Which biological molecule (polymer) has a sugar-phosphate backbone with base-pairs that extend inward?
nucleic acid
The type of strong bond produced when atoms share electrons is a(n):
covalent bond
In general, what makes one kind of amino acid different from other amino acids?
the side group (R group)
The mass number of an element refers to the number of _________ in one atom of that element.
protons+neutrons
Which of the following components of an atom interacts in chemical reactions?
electrons
Which type of lipid has three straight tails that contain only single to single carbon bonds?
saturated fat
Which of the following statements about the atom carbon is true?
it has 6 neutrons in its nucleus
The period (row) number on the periodic table tells you:
the number of shells in an atom
In a single water molecule, each hydrogen is bound to the oxygen atom with what kind of chemical bond?
covalent bonds that are polar
When salt forms (NaCl, Sodium Chloride) what type of bond occurs when sodium loses an electron and chloride gains one?
ionic bonds
Which of the features below is NOT found in both prokaryotic and eukaryotic cells?
mitochondria
If an atom is highly electronegative (high EN), that means it:
pulls electrons tightly towards itself
Which organelle is found in plant cells only and NOT in both plant and animal cells?
central vacuole
The four most common elements in biological molecules are...?
-C
-H
-O
-N
Which of the following are single membrane bound areas in the middle of a chloroplast?
>They exist in stacks called grana
thylakoids
Which of the following is NOT a step in the scientific method?
theory
The filaments network of proteins in the cells cytoplasm that helps structure and transport is the____________?
cytoskeleton
Carbohydrates are polymers made of__________?
monosaccharides
Which of the following are found in the nucleus of an atom?
neutrons and protons
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