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Quick Biochemistry - Introduction To Biochemistry (Section 1)

1
A medication that blocks the production of uric acid by targeting the enzyme xanthine oxidase is:
Answer
(B)
Allopurinol
2
Which element is essential for the formation and storage of the hormone insulin?
Answer
(D)
Zn ++
3
The body's process that produces the most energy from which substance?
Answer
(D)
Lipids
4
Which vitamins are present in low amounts in milk?
Answer
(A)
Vitamin C
5
What mineral is found in small quantities in milk?
Answer
(C)
Iron
6
The creation of prostaglandins can be stopped by
Answer
(A)
Aspirin
7
The creation and release of HDL happens in the
Answer
(B)
Liver
8
The process where cholesterol esters are broken down after entering cells via receptor-mediated endocytosis of lipoproteins occurs in the
Answer
(B)
Lysosomes
9
Which phospholipid is predominantly found on the outside layer of the membrane lipid bilayer?
Answer
(A)
Choline phosphoglycerides
10
Which of the following actions does not occur quickly in the membrane lipid bilayer?
Answer
(C)
Transbilayer diffusion of phopholipids
11
Regarding membrane cholesterol, which statement is accurate?
Answer
(C)
The steroid nucleus creates a rigid, flat structure
12
What is the heaviest component found within a typical cell?
Answer
(A)
Nucleus
13
Which cytoplasmic structure is typically the biggest?
Answer
(B)
Mitochondria
14
What term encompasses degradative processes within a biological system?
Answer
(B)
Catabolism
15
How is material exchange typically achieved?
Answer
(D)
Via all of these methods
16
What is the typical pH level of urine?
Answer
(B)
6.0
17
Blood has a pH of 7.4 when the ratio of H2CO3 to NaHCO3 is approximately what?
Answer
(B)
1 : 20
18
Which process is the reverse of osmosis?
Answer
(A)
Diffusion
19
What substance reduces the surface tension between fat droplets and the aqueous medium in the intestinal lumen?
Answer
(A)
Bile Salts
20
Which of these is found within mitochondria?
Answer
(D)
All of these
21
In which cellular structure does the majority of protein synthesis occur?
Answer
(B)
Ribosome
22
How do fatty acids move across the mitochondrial membrane?
Answer
(B)
Facilitated transfer
23
What is the structural characteristic of mitochondrial DNA?
Answer
(A)
Circular double stranded
24
In young animals, how are whole proteins taken up from the gut?
Answer
(A)
Pinocytosis
25
Which cellular components are known as “self-destruct bags”?
Answer
(A)
Lysosomes
26
From a biological perspective, how are solutions categorized?
Answer
(D)
All of these
27
Which processes enable the bulk movement of substances across the cell membrane?
Answer
(D)
All of these
28
What determines the cell membrane's function as a selective filter?
Answer
(D)
All of these
29
What capabilities do carrier proteins possess?
Answer
(D)
Perform all of these functions
30
What type of molecule can readily pass through a lipid bilayer?
Answer
(A)
Urea
31
What is the primary function of the Golgi complex?
Answer
(D)
Creating glycoproteins
32
Which of the following is NOT a characteristic of microfilaments?
Answer
(C)
Serving as intracellular conducting channels
33
Which of the following is NOT considered a cell inclusion?
Answer
(D)
Centrosome
34
How do fatty acids typically traverse the cell membrane?
Answer
(B)
Facilitated transport
35
Where are the majority of enzymes involved in electron transport found?
Answer
(D)
Inner mitochondrial membrane
36
What cellular component is absent in mature erythrocytes?
Answer
(C)
Pyridine nucleotide
37
Where is rRNA primarily synthesized in mammalian cells?
Answer
(C)
Nucleolus
38
What molecule carries genetic information from nuclear DNA to the site of protein synthesis?
Answer
(D)
Polysomes
39
Which cellular structure is often referred to as the cell's energy producer?
Answer
(C)
Mitochondria
40
In what cellular organelle are digestive enzymes primarily contained?
Answer
(A)
Lysosomes