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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: Support in Plants and the Human Skeletal System

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  • Questions count: 20
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1.
Which of the following changes occur in a wilted plant cell when it is irrigated with pure fresh water?
The osmotic pressure of its cell juice increases and the wall contracts
Lignin immediately deposits on the walls of their woody vessels
The layer of cutin on the skin of its leaves doubles in thickness in minutes
Water enters by osmosis, the vacuole swells, the filling pressure increases, and the cell wall becomes tense
2.
Mutations that are inherited to future generations and occur in reproductive cells that produce gametes are called:
Rebound mutations
Temporary spikes
Somatic mutations
Gamete mutations
3.
In a hydraulic press, if the radius of the large piston is 4 times that of the small piston, the mechanical advantage is:
4
16
8
2
4.
Reproduction by peaceful association in two adjacent threads of the spirogyra moss (Rem al-Barak) occurs in the case of:
The environment is exposed to drought, change in water purity, or change in temperature (unsuitable conditions)
Abundance of pure fresh water
Mild spring
Complete darkness
5.
A metal cation that forms a gelatinous white precipitate with NaOH which completely redissolves in excess reagent to form a soluble clear solution is:
Al3+ (due to the formation of soluble sodium meta-aluminate NaAlO2)
Fe3+
Ca2+
Fe2+
6.
The skeletal muscle cell membrane that surrounds the sarcoplasm is scientifically called:
Myelin
Sarcoma
Sarcoplasm
pyrimecium
7.
Potters use high-temperature ovens called ________ to bake and harden clay vessels.
looms
fridges
blenders
kilns
8.
The movement of tension in the tendrils of climbing plants such as peas and grapes depends physiologically on:
Slow growth of the area in contact with the support and rapid growth of the area far from it as a result of the varying distribution of auxins
Water loss through rapid transpiration
Degeneration of tendril cells
Secretion of gluey substances
9.
The amount of DNA in a human female secondary oocyte compared to a resting somatic skin cell (before replication begins) is:
Equal (contains 46 DNA molecules in the form of 23 diploid chromosomes)
Weakness
Quarter
Half the quantity
10.
Natural killer (NK) cells attack and kill cancer cells and virus-infected cells by:
Histamine secretion
Secretion of antibodies
Secretion of specialized digestive enzymes without the need for prior specific antigen recognition
Swallow the cells whole
11.
In the human female, the second (delayed/conditional) meiotic division of the secondary oocyte takes place in:
Ovaries before ovulation
Uterine cavity
The fallopian tube when the sperm enters the head for fertilization to occur
Graaf's vesicle
12.
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
CD4 receptor
CD3 receptor
13.
The enzyme found in the apical body (Acrosome) of the sperm that helps it penetrate the compact envelope of the egg is:
Hyaluronidase enzyme
Amylase enzyme
Cholinesterase enzyme
pepsin enzyme
14.
The hormone relaxin works physiologically before birth to:
Inhibiting uterine contractions
Milk formation in the breast
Oocyte maturation
The pubic symphysis in the pelvic bones relaxes to facilitate the exit of the fetus
15.
Which of the following oxides is classified as an amphoteric oxide that reacts with both acids and bases to yield salt and water?
Carbon dioxide (CO2)
Sulfur trioxide (SO3)
Sodium oxide (Na2O)
Aluminum oxide (Al2O3)
16.
The pulling movement occurs in bulbs and corms (such as carcasses and daffodils) with the aim of:
Getting rid of carbon dioxide
Repel terrestrial insects
Pull the stored ground leg down to an appropriate level from the soil surface to secure and support it against the wind
Light absorption for photosynthesis
17.
The hormone Prolactin is secreted from the anterior lobe of the pituitary and works physiologically on:
Stimulating the secretion and formation of milk in the mammary glands of the breastfeeding mother
Pelvic muscle contraction
Nutrition of the fetus in the uterus
The emission and release of milk in response to breastfeeding
18.
The protein secreted by cytotoxic T cells (Tc) that creates holes in the plasma membrane of the target cell is:
globulin
Perforin protein
Interleukin
Complement C3
19.
A solution with a pH value of 3.0 is classified as:
Strongly acidic
Strongly alkaline
Weakly basic
Neutral
20.
Peyer's spots's Patches) Tiny lymph nodes spread in the mucous membrane lining the:
Stomach
Pharynx
Lower part of the small intestine (ileum)
esophagus
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