Curriculum
Login

Curriculum

Biology & Geology

Chapter 2 - Hormonal Coordination in Living Organisms

0/32

Chapter 3 - Reproduction in Living Organisms

0/33

Chapter 4 - Immunity in Living Organisms

0/34

Chapter 5 - Molecular Biology - DNA Structure and Function

0/43

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

0/38
Quiz

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

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
1.
What is the structural characteristic of a restriction endonuclease recognition site?
It contains only adenine and thymine bases.
It is a palindromic sequence reading identical 5' to 3' on both strands.
It consists of 15-20 repetitive nucleotides.
It always begins with the start codon AUG.
2.
Which of the following oxides is classified as an amphoteric oxide that reacts with both acids and bases to yield salt and water?
Sulfur trioxide (SO3)
Aluminum oxide (Al2O3)
Sodium oxide (Na2O)
Carbon dioxide (CO2)
3.
The atom in the pentose sugar molecule (dioxyribose) to which the nitrogenous base is linked by a covalent bond is:
Carbon atom number 2'
Carbon atom number 5'
Carbon atom number 1' (C1')
Carbon atom number 3'
4.
The surface immune receptor characteristic of T helper cells (Th) that enables them to recognize the antigen complex with the MHC protein is:
CD8 receptor
BCR receptor
CD3 receptor
CD4 receptor
5.
The ion directly responsible for the explosion of synaptic vesicles and the release of acetylcholine in the neuromuscular synapse cleft is:
Potassium ion K+
Chloride ion Cl−
Sodium ion Na+
Calcium ion Ca2+
6.
While the students ________ in the art workshop, the tour guide arrived.
are working
worked
were working
work
7.
Cells that carry CD8 receptors and directly eliminate cancer cells, virus-infected cells, and transplanted organs are:
Helper T cells (Th)
Memory B cells
Mast cells
Cytotoxic T cells
8.
The gland that secretes both external ductal secretion and non-ductal hormonal secretion directly into the blood is:
Pancreas (common/mixed gland)
pituitary gland
Thyroid gland
Adrenal gland
9.
Which of the following alloys is classified as an interstitial alloy?
Stainless steel (Iron, Chromium, and Nickel)
Brass (Copper and Zinc)
Carbon steel (Iron and Carbon where small carbon atoms occupy interstitial voids)
Duralumin (Aluminum and Copper)
10.
In eukaryotic cells, rRNA molecules are synthesized and assembled under ribosomal subunits within:
Nucleolus
directly into the cytoplasm
Golgi apparatus
Smooth endoplasmic reticulum
11.
The salivary glands and sweat glands in the human body are examples of:
Exocrine ductal glands discharge their secretions through special channels outside the bloodstream
Common glands
Steroid tissue
Aductal endocrine glands
12.
Lymphotoxins secreted by cytotoxic T cells (Tc) eliminate the infected cell by:
Activation of certain genes within the nucleus of the infected cell, which leads to the fragmentation of its genetic material and its programmed death (Apoptosis).
Blood plasma coagulation
Immunosuppression
Calcium withdrawal
13.
The major histocompatibility complex (MHC) protein associates within the macrophage cell with:
Secreted antibodies
Perforin protein
Microbe antigen after being broken down by lysosomal enzymes to be displayed on the external surface
Histamine molecules
14.
Which of the following oxides is amphoteric?
Na2O
MgO
SO3
ZnO
15.
What is the direct physiological effect of injecting a healthy person with an excessive dose of the hormone insulin?
Increased urine secretion
A severe drop in blood glucose levels (hypoglycemia) and hypoglycemic coma
A sharp increase in blood sugar
Uric acid accumulation
16.
Which of the following first-row transition metal ions exhibits the highest theoretical magnetic moment in its ground state?
Cu2+ ([Ar] 3d9 with 1 unpaired electron)
Zn2+ ([Ar] 3d10 with 0 unpaired electrons)
Fe3+ ([Ar] 3d5 with 5 unpaired electrons)
Cr3+ ([Ar] 3d3 with 3 unpaired electrons)
17.
Fructose, which is found in semen to nourish sperm outside the testicle, is secreted by:
The seminal vesicles
Tomorrow Cooper
Epididymis
Prostate gland
18.
Beta cells in the islets of Langerhans in the pancreas are responsible for secreting the hormone:
Somatostatin
Glucagon
Insulin
Pepsin
19.
The hormone that is secreted from the stomach lining and travels through the blood to return to the same stomach, stimulating it to secrete its digestive gastric juices, is:
Secretin hormone
Pepsin hormone
Gastrin hormone
Cholecystokinin hormone
20.
Stop codons that bind to the release factor to terminate the translation process are:
AUG And GUG and UUG
CCC And GGG and TTT
AAA And UUU and GGG
UAA And UAG and UGA
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20