Grade 9 Biology Unit B1 Quiz

<p>They are produced through a mitotic process, ensuring identical genetic material. (B)</p> Signup and view all the answers

<p>A flowering plant producing seeds. (E)</p> Signup and view all the answers

<p>Water (C)</p> Signup and view all the answers

<p>Bone marrow (B)</p> Signup and view all the answers

<p>41% (B)</p> Signup and view all the answers

<p>Left side of the chest (C)</p> Signup and view all the answers

<p>Carrying oxygen (B)</p> Signup and view all the answers

<p>Clotting blood (B)</p> Signup and view all the answers

<p>Plasma (D)</p> Signup and view all the answers

<p>4% (D)</p> Signup and view all the answers

<p>Fighting infections (B)</p> Signup and view all the answers

<p>Direct instruction (C)</p> Signup and view all the answers

<p>To reinforce and consolidate understanding of concepts learnt and inquiry skills (B)</p> Signup and view all the answers

<p>True or False (B)</p> Signup and view all the answers

<p>To equip students with the necessary knowledge and skills for the National Certificate of Education (NCE) assessment (B)</p> Signup and view all the answers

<p>Working independently (C)</p> Signup and view all the answers

<p>Summative assessment (B)</p> Signup and view all the answers

<p>To make the learning process more relevant and engaging for students (B)</p> Signup and view all the answers

<p>Stroke &amp; Heart Attack (D)</p> Signup and view all the answers

<p>To transport oxygen and nutrients to the body's cells (D)</p> Signup and view all the answers

<p>Nerves (C)</p> Signup and view all the answers

<p>Transporting substances throughout the body (B)</p> Signup and view all the answers

<p>Regular Exercise (B)</p> Signup and view all the answers

<p>To pump blood throughout the body (C)</p> Signup and view all the answers

<p>Arteries, Veins, and Capillaries (B)</p> Signup and view all the answers

<p>To transport oxygen to the body's cells (D)</p> Signup and view all the answers

<p>To clot blood (A)</p> Signup and view all the answers

<p>To ensure the survival of a particular species. (B)</p> Signup and view all the answers

<p>The process of producing new individuals of the same kind. (B)</p> Signup and view all the answers

<p>Sexual reproduction involves two parents, while asexual reproduction involves only one parent. (D)</p> Signup and view all the answers

<p>Photosynthesis (C)</p> Signup and view all the answers

<p>Sexually transmitted diseases (A)</p> Signup and view all the answers

<p>HIV/AIDS (B)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>Reproduction ensures that a species can continue to exist over generations. (B)</p> Signup and view all the answers

<p>To produce and transport sperm. (C)</p> Signup and view all the answers

<p>Vein (C)</p> Signup and view all the answers

<p>To regulate blood pressure (B)</p> Signup and view all the answers

<p>A large lumen (A)</p> Signup and view all the answers

<p>Arteries carry blood away from the heart, veins carry blood towards the heart (C)</p> Signup and view all the answers

<p>Capillary (D)</p> Signup and view all the answers

<p>Valves prevent blood from flowing backwards in veins (A)</p> Signup and view all the answers

<p>Capillaries are the site of gas exchange between blood and tissues (A)</p> Signup and view all the answers

<p>Improved medical treatments and lifestyle changes (D)</p> Signup and view all the answers

<p>Excessive alcohol consumption (A)</p> Signup and view all the answers

<p>Lymphatic vessels (D)</p> Signup and view all the answers

<p>To transport oxygen throughout the body (B)</p> Signup and view all the answers

<p>Diseases of the heart and blood vessels (C)</p> Signup and view all the answers

<p>To pump blood throughout the body (A)</p> Signup and view all the answers

<p>Improved medical treatments and awareness of risk factors (C)</p> Signup and view all the answers

<p>Genetic predisposition (C)</p> Signup and view all the answers

<p>To transport oxygenated blood from the heart (D)</p> Signup and view all the answers

<p>Structure A carries blood at lower pressure than structure C (D)</p> Signup and view all the answers

<p>Contraction of the heart muscles (C)</p> Signup and view all the answers

<p>The presence of one-way valves (B)</p> Signup and view all the answers

<p>Blockage caused by fatty materials in the arteries (B)</p> Signup and view all the answers

<p>The contraction of heart muscles (A)</p> Signup and view all the answers

<p>Elbow (C)</p> Signup and view all the answers

<p>Heart attack (C)</p> Signup and view all the answers

<p>Increase in blood pressure above normal range (D)</p> Signup and view all the answers

<p>Blood clot that blocks an artery in the brain (C)</p> Signup and view all the answers

<p>Artery (C)</p> Signup and view all the answers

<p>A pulse can be felt by using two fingers with light pressure. (C)</p> Signup and view all the answers

<p>Poor diet and lack of exercise (A)</p> Signup and view all the answers

<p>Stroke (D)</p> Signup and view all the answers

<p>The rhythmic expansion and contraction of an artery. (C)</p> Signup and view all the answers

<p>On the wrist and neck. (D)</p> Signup and view all the answers

<p>A pulse is felt when blood flows from the heart. (B)</p> Signup and view all the answers

<p>Red blood cell (A)</p> Signup and view all the answers

<p>Fighting against infections and foreign invaders. (D)</p> Signup and view all the answers

<p>Red blood cells contain hemoglobin while white blood cells do not. (A)</p> Signup and view all the answers

<p>To assess the body's immune response. (B)</p> Signup and view all the answers

<p>Presence of a nucleus. (D)</p> Signup and view all the answers

<p>They have a distinct nucleus and varying shapes. (B)</p> Signup and view all the answers

<p>They increase in number in response to pathogens. (D)</p> Signup and view all the answers

The process of involving students in activities to enhance learning.

Teaching methods that focus on the needs and preferences of the students.

An instructional method where students learn by engaging in projects.

A visual representation of relationships among concepts.

Connections made between classroom concepts and real-world situations.

Assessment used to monitor student learning and provide ongoing feedback.

Questions structured to gradually increase in difficulty to aid understanding.

A swollen underground stem, like a potato.

Reproduction involving a single parent, producing genetically identical offspring.

Small growths from the 'eyes' of a potato tuber that can develop into new plants.

Offspring from asexual reproduction are identical to the parent and to each other.

Methods such as budding in yeast, and runners in strawberries, and tubers in potatoes.

The heart is located in the middle of the chest, slightly to the left.

The heart pumps blood into blood vessels to all parts of the body.

Blood consists of approximately 55% plasma, 41% red blood cells, and 4% white blood cells and platelets.

Blood plasma is a pale yellowish liquid containing water, glucose, salts, proteins, and waste.

RBCs are the most abundant blood cells, making up about 41% of blood.

White blood cells are part of the immune system, helping fight infections.

Platelets are cell fragments that help with blood clotting.

Blood cells and platelets make up about 45% of total blood volume.

The activity involves examining human blood under a light microscope.

The process of producing new individuals of the same kind.

Essential for the continuity of living organisms on earth.

Two types: sexual and asexual reproduction.

Diseases spread through sexual contact between infected and uninfected individuals.

Common STDs include HIV/AIDS and syphilis.

Parts of male and female systems involved in reproduction.

Reading data from graphs related to sexually transmitted diseases.

The ongoing existence of living organisms through reproduction.

Diseases affecting the heart and blood vessels.

System consisting of blood, blood vessels, and the heart that circulates blood throughout the body.

Blood consists of plasma, red blood cells, white blood cells, and platelets.

Plasma is a liquid that transports substances in the blood.

The organ that pumps blood into the circulatory system.

Unhealthy diets, obesity, lack of exercise, smoking, and stress contribute to these diseases.

A condition where blood flow to the heart is blocked, causing damage to the heart muscle.

A medical condition where blood supply to the brain is disrupted, causing brain damage.

Excess body fat that may impair health, contributing to cardiovascular diseases.

Insufficient physical activity that increases the risk of cardiovascular diseases.

The stretching and recoiling of artery walls with each heartbeat.

Finding a pulse by feeling specific areas, like the wrist or neck.

A health condition where blood pressure is higher than normal levels.

Arteries carry oxygenated blood away from the heart under high pressure.

Personal habits can impact heart and vessel health, leading to diseases.

Muscular tissues of the heart that contract to pump blood.

Factors like obesity, poor diet, and lack of exercise contribute to heart diseases.

Refers to the artery that carries blood away from the heart.

Denotes the capillaries where exchange of gases and nutrients occurs.

Indicates the vein that brings blood back to the heart.

Blood is under high pressure when leaving the heart due to ventricular contraction.

Structure A allows blood to flow in one direction due to the presence of valves.

Diets high in fats, sugars, and processed foods.

A blood vessel that carries blood away from the heart, has thick muscular walls.

A blood vessel that carries blood back to the heart, has thinner walls than arteries.

The smallest blood vessels where gas and nutrient exchange occurs between blood and tissues.

The central hole in a blood vessel through which blood flows.

Arteries have thick walls made of muscle and elastic fibers for strength.

Veins have larger lumens and thinner walls, include valves to prevent backflow.

Capillaries have very thin walls, made of a single layer of cells for easy exchange.

Common places to locate a pulse include the wrist and neck.

A pulse is directly related to the heartbeat, reflecting each contraction of the heart.

Red blood cells (RBCs) carry oxygen from the lungs to the rest of the body.

In a blood smear, red blood cells can be identified as round, disc-shaped cells.

White blood cells help fight infections and play a vital role in the immune system.

Plasma is the liquid component of blood that transports nutrients, waste, and other substances.

Blood cells, including red and white blood cells, perform functions like oxygen transport and immune response.

Observing blood under a microscope allows for the identification and study of blood cells.