Biology-Invitational B 2012 Flashcards
1
Q
Which of the following organelles could be found in eukaryotic cells but not in prokaryotic cells? A) nucleus B) mitochondrion C) endoplasmic reticulum D) Golgi apparatus E) all of the above
A
E
2
Q
Which of the following is defined as the net random movement of molecules down a concentration gradient? A) bulk flow B) active transport C) exocytosis D) diffusion E) turgor
A
D
3
Q
The basic building blocks of carbohydrates are...? A) monosaccharides B) fatty acids and glycerol C) amino acids D) nucleotides E) starches
A
A
4
Q
Which of the following genotypes is homozygous? A) AaBB B) aABB C) aaBB D) aaBb E) AaBb
A
C
5
Q
Both DNA and RNA...? A) are single stranded molecules B) contain the same 4 nucleotide bases C) are polymers of amino acids D) have the same 5 carbon sugars E) contain phosphate groups
A
E
6
Q
Which of the following is NOT true of viruses?
A) they have either DNA or RNA as their genetic material
B) they can reproduce outside of a host
C) they are all pathogens
D) they do not have cell membranes
E) they can take over cells of the host and make the host cell produce more viruses
A
B
7
Q
The oldest plants on earth were...? A) vascular plants B) flowering plants C) seed plants D) aquatic plants E) pollen-producing plants
A
D
8
Q
What kind of skeleton do most aquatic invertebrates have?
A) bony
B) hydrostatic
C) chitinous
D) cartilaginous
E) most aquatic invertebrates have no skeleton
A
B
9
Q
The growing tip of a plant root is protected as it grows through the soil by the...? A) apical meristem B) radicle C) root hairs D) root cap E) none of the above
A
D
10
Q
The growth rings of a tree are made up of...? A) parenchyma B) collenchyma C) xylem D) phloem E) meristematic tissue
A
C
11
Q
Which plant pigment is responsible for photoperiodism A) chlorophyll B) xanthophyll C) anthocyanin D) carotene E) phytochrome
A
E
12
Q
Which of the following organs of the human digestive system carries out most of the chemical digestion of food? A) mouth B) esophagus C) stomach D) small intestine E) large intestine
A
D
13
Q
The oxygen carrying pigment in the blood of vertebrates is...? A) myoglobin B) carotene C) hemoglobin D) rhodopsin E) melanin
A
C
14
Q
Which of the following structures removes waste products from the blood of vertebrates? A) alveoli B) kidneys C) lymph nodes D) tissue capillaries E) liver
A
B
15
Q
Which of the following is NOT an endocrine gland? A) pituitary gland B) thyroid gland C) thymus gland D) adrenal gland E) mammary gland
A
E
