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Biology & Geology

Chapter 1 - Support and Movement in Living Organisms

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Chapter 2 - Hormonal Coordination in Living Organisms

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Chapter 3 - Reproduction in Living Organisms

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Chapter 4 - Immunity in Living Organisms

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Chapter 5 - Molecular Biology - DNA Structure and Function

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Chapter 6 - Molecular Biology - RNA, Protein Synthesis and Genetic Engineering

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Chapter 7 - Geology, Earth Sciences and Ecology

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Quiz

Lesson 1 Quiz: Endocrine Glands, The Pituitary, Thyroid and Parathyroid Glands

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  • Questions count: 20
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1.
The lymphocytes responsible for secreting specific antibodies in humoral immunity are:
Plasma B cells
Macrophages
Natural killer (NK) cells
Helper T cells (TH)
2.
Vaccination gives humans immunity:
Acquired long-term positivity for the formation of memory cells
Temporary negativity that disappears within weeks
Innate, inherited
Not specialized
3.
The derivative of f(x) = 4 x3 - 5 x2 + 7 x - 9 with respect to x is:
f'(x) = 12 x2 - 10 x + 7
f'(x) = 12 x2 - 10 x
f'(x) = 4 x2 - 5 x + 7
f'(x) = 12 x3 - 10 x2 + 7
4.
Bacterial restriction endonucleases recognize specific nucleotide sequences called recognition sites, and are characterized by:
Lipoprotein molecules
Palindromes of 4 to 8 pairs read in the same order on both strands in 5′ direction.' to 3'
Asymmetric repetitive sequences
Stop codons only
5.
In the life cycle of the Plasmodium malaria parasite, the human infective phase is:
Sporozoites
Merozoites
Gametophytes
Kinetic phase (okinete)
6.
In a hydraulic press, the ratio of the cross-sectional area of the large piston to that of the small piston is 50. If a force of 100 N is exerted on the small piston, the maximum force exerted by the large piston is:
2 N
2500 N
50,000 N
5000 N
7.
In the human female, the second (delayed/conditional) meiotic division of the secondary oocyte takes place in:
Graaf's vesicle
Uterine cavity
Ovaries before ovulation
The fallopian tube when the sperm enters the head for fertilization to occur
8.
Hydra and planaria share the ability to reproduce asexually by:
Budding only
Longitudinal binary fission
Bacteria formation
Regeneration
9.
According to Chargaff's rules's Rules) In the DNA double helix, the equal ratio is always:
A = G And T = C
A + T = G + C always
A / T = 2
The ratio of adenine A equals thymine T, and the ratio of guanine G equals cytosine C (A+G). = T+C)
10.
Combined contraceptive pills are considered an effective method because they:
It kills sperm
Placental abruption
The fallopian tubes close mechanically
It contains synthetic hormones similar to estrogen and progesterone that inhibit the secretion of FSH and LH from the pituitary, thus preventing the maturation of eggs and the occurrence of ovulation.
11.
Histone proteins responsible for shortening the length of the DNA molecule ten times and forming nucleosomes are characterized by being rich in the two basic amino acids:
Arginine and lysine (Arginine & Lysine)
Glycine and alanine
Methionine and tryptophan
Glutamic acid and aspartic acid
12.
The first human protein produced commercially using recombinant DNA technology to treat diabetics is:
Growth hormone
Hemoglobin
Interferon protein
Human hormone insulin (Insulin)
13.
Using the Quotient Rule, the derivative of y = (x + 3) / (x - 2) for x != 2 is:
1 / (x - 2)2
5 / (x - 2)2
-5 / (x - 2)2
(2x + 1) / (x - 2)2
14.
The location where fertilization of the egg by the sperm occurs in the human female reproductive system is:
First third of the fallopian tube (near the infundibulum)
the vagina
Directly to the ovary
Internal uterine cavity
15.
Which of the following hormones is considered a steroid hormone (derived from fat and cholesterol)?
Progesterone and testosterone
Growth hormone (GH)
Thyroxine
Insulin
16.
Asexual reproduction differs from sexual reproduction in that:
It is based on a single parental individual and maintains genetic stability over generations because it is based on mitosis
It always requires the formation of gametes
Provides great genetic diversity
Expensive in energy and time
17.
The derivative of y = sin(3x) with respect to x is:
cos(3x)
-3 cos(3x)
3 cos(3x)
3 sin(3x)
18.
The number of codons that code for the 20 amino acids in the genetic table is equal to:
61 Codons (out of a total of 64 codons after excluding the three stop codons)
64 Codona
20 Codona
32 Codona
19.
If f(x) = |x - 3|, the derivative f'(3) at x = 3:
Equals 0
Equals 1
Equals -1
Does not exist because the left-hand derivative (-1) does not equal the right-hand derivative (+1)
20.
The amount of DNA in a human female secondary oocyte compared to a resting somatic skin cell (before replication begins) is:
Weakness
Quarter
Equal (contains 46 DNA molecules in the form of 23 diploid chromosomes)
Half the quantity
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