Studienführer, Klassennotizen & Zusammenfassungen

1) Cells are _____. A) only found in pairs, because single cells cannot exist independently B) limited in size to 200 and 500 micrometers in diameter C) characteristic of eukaryotic but not prokaryotic organisms D) characteristic of prokaryotic and eukaryotic organisms 2) In comparison to eukaryotes, prokaryotes _____. A) are more structurally complex B) are larger C) are smaller D) do not have membranes 3) Which of the following types of cells utilize deoxyribonucleic acid (DNA) as their geneti...

Test Bank for Biology Exploring the Diversity of Life, 4th Canadian Edition

BIOD 171 module 6 (2 Versions) . True or False: Because the genome is contained within an enclosed space, (much like the nucleus of a cell) viruses are classified as eukaryotic: False. Viruses are neither eukaryotic nor prokaryotic 2. Describe the two basic components of a virus (short answer): A virus has 1. genomic material comprised of either DNA or RNA and 2. a capsid, a membrane-like protective structure that contains the genetic material, similar to the nucleus of a eukaryotic cell...

Apoptosis is the programmed cell death of damaged or unwanted cells. (a) Fig. 1.1 shows a transmission electron micrograph (TEM) of apoptosis of a leucocyte. Fig. 1.1 A B C (i) Name the following structures and processes shown in Fig. 1.1: • the structure labelled A forming in the cell surface membrane • the process occurring to the organelle labelled B • the structure labelled C. Structure A ...........................................................................................

2 OCR 2023 1 This question is based on the Advance Notice Article ‘Development of therapeutic antibodies for the treatment of disease’. (a) (i) State what is meant by the term antigen. ........................................................................................................................................... . ..................................................................................................................................[1] (ii) Scientists can combine...

2 OCR 2023 Section A You should spend a maximum of 40 minutes on this section. Write your answer for each question in the box provided. 1 The image shows an erythrocyte after being placed in a solution. Which option explains the appearance of the erythrocyte? A The solution was distilled water. B The water potential of the solution is equal to the water potential of the cytoplasm of the erythrocyte. C The water potential of the solution was less negative than the cytoplasm of the eryth...

1 Cats are mammals. (a) A light micrograph of a section through the trachea of a cat is shown in Fig. 1.1. Fig. 1.1 A B C (i) Name the tissues labelled A and B in Fig. 1.1. A ........................................................................................................................................ B ........................................................................................................................................ [2] (ii) Name the two types of cell in ...

Prokaryotes do not have a ________. However, they do have ________. Correct Answer-nucleus, DNA. What two things store energy in cells? Correct Answer-ion gradient and covalent bonds. True or False: both prokaryotes and eukaryotes have ribosomes and plasma membranes. Correct Answer-True What are the big 6 atoms? Correct Answer-Carbon, Hydrogen, Oxygen, Phosphorus, Sulfur, Nitrogen What is assimilation? Correct Answer-making the big 4 macromolecules (proteins, carbs, nucleic acids, li...

What are the general characteristics of all animals? Correct Answer-Getting food, digestion, cellular respiration, respiratory exchange, assimilation, secretion, elimination, reproduction, asexual growth/movement What is the difference between anatomy and physiology in terms of the scope of topics each area of study covers? Correct Answer-anatomy - reflects history, structure physiology - function What are the levels of organization in an animal from smallest to largest level? Correct Ans...

2 OCR 2023 Section A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. 1 Which option correctly describes a tissue? A A group of cells performing similar functions B A group of organs performing a specific function C A group of similar cells performing a specific function D A group of similar cells performing a variety of functions Your answer [1] 2 Bone marrow stem cells are a source of erythrocytes. Which statement abo...

Other than energy, what does food contain that is vital for life? Correct Answer-nutrients malnutrition Correct Answer-lack of essential nutrients in diet leading cause of death for children worldwide Correct Answer-malnutrition (answer) Where/why is malnutrition prevalent? Correct Answer-Sub-Saharan Africa; hot/dry, growing season is short essential nutrients Correct Answer-obtained in food (amino acids, fats, vitamins, minerals) because the body can't make them purpose of essen...