BLG1501 Assignment 2 Semester 1 2024 (Solutions)

BLG1501 Assignment 2 Semester 1 2024 (Solutions) Question 1 Not yet answered Marked out of 2.00 Flag question Question text Hydrolysis is reaction which occurs when Select one: a. a bond of a polymer is broken down through the addition of water molecule. b. two molecules are covalently bonded to each other through the loss of water. c. a double bond is formed between two atoms. d. a triple bond is formed between two atoms. Clear my choice Question 2 Not yet answered Marked out of 2.00 Flag question Question text Water resists changing its temperature because of its _____. a. high specific heat b. cohesion c. adhesion d. low specific heat Clear my choice Question 3 Not yet answered Marked out of 2.00 Flag question Question text It is an example of an autotroph. Select one: a. amoeba b. dog c. algae d. sheep Clear my choice Question 4 Not yet answered Marked out of 2.00 Flag question Question text Pinocytosis is defined as _____. Select one: a. cell encystment b. cell drinking c. cell shrinking d. cell eating Clear my choice Question 5 Not yet answered Marked out of 2.00 Flag question Question text The following are formed of glycerol and fatty acids _____. a. proteins b. Vitamins c. Phospholipids d. nucleic acids Clear my choice Question 6 Not yet answered Marked out of 2.00 Flag question Question text In _____ each of the four daughter cells formed is haploid and genetically distinct from other daughter cells and from the parent cell. Select one: a. telophase 1 b. Telophase 2 c. anaphase 1 d. metaphase 2 Clear my choice Question 7 Not yet answered Marked out of 2.00 Flag question Question text Entropy is known as _____. a. measure of molecular order b. measure of compound order c. measure of compound disorder d. measure of molecular disorder Clear my choice Question 8 Not yet answered Marked out of 2.00 Flag question Question text Consider this scenario, a hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. This is an example of _____. Select one: a. predation b. food web c. food chain d. food process Clear my choice Question 9 Not yet answered Marked out of 2.00 Flag question Question text Distilled water has a pH of _____. a. 5 b. 7 c. 10 d. 3 Clear my choice Question 10 Not yet answered Marked out of 2.00 Flag question Question text Amoeba is an example of an autotroph. Select one: True False Question 11 Not yet answered Marked out of 2.00 Flag question Question text The function of food vacuole is _____. a. to control all activities in the cell. b. to fuse with lysosome to digest particles during phagocytosis. c. storage of organic compounds, growth of plant cells, disposal sites for metabolic by-products. d. to pump excess water out of the cell, maintain an appropriate concentration of salts and other molecules. Clear my choice Question 12 Not yet answered Marked out of 2.00 Flag question Question text Ecotone is defined as a _____. a. complex of proteins responsible for synthesizing the RNA primers required in DNA synthesis b. succession progress to a stable persistent community c. transition zone where two communities or biomes meet and integrate d. total potential energy of a system Clear my choice Question 13 Not yet answered Marked out of 2.00 Flag question Question text The transmission of traits, from parents to their offspring to the next generation, is known _____. a. filial generation b. mitosis c. heredity d. meiosis Clear my choice Question 14 Not yet answered Marked out of 2.00 Flag question Question text Isomers are known as _____. a. elements that have the same numbers of atoms of the same of the same molecules but different number of electrons. b. elements that have the same numbers of atoms of the same of the same molecules but different structures. c. compounds that have the same number of atoms of the same element but different structures. d. compounds that have the same number of atoms of the same element but different number of neutrons Clear my choice Question 15 Not yet answered Marked out of 2.00 Flag question Question text Chemoheterotrophs are able to manufacture their food by CO2 as a source of carbon. Select one: True False Question 16 Not yet answered Marked out of 2.00 Flag question Question text The valence of oxygen to form a bond is _____. a. 3 b. 4 c. 1 d. 2 Clear my choice Question 17 Not yet answered Marked out of 2.00 Flag question Question text Mechanical work is _____. a. the pumping of substances across membranes spontaneous movement b. the synthesis of polymers from monomers c. the beating of cilia d. the pushing of endergonic reactions Clear my choice Question 18 Not yet answered Marked out of 2.00 Flag question Question text Bulk transport across the plasma membrane occurs by pinocytosis and plasmolysis. Select one: True False Question 19 Not yet answered Marked out of 2.00 Flag question Question text A hydrogen bond is regarded as a weak bond that is formed _____. a. when a hydrogen atom covalently bonds to a nitrogen atom b. when a hydrogen atom covalently bonds to one electronegative atom c. when a hydrogen atom is in an ionic bond with another atom d. when a hydrogen atom is in a non-polar covalent bond with another atom Clear my choice Question 20 Not yet answered Marked out of 2.00 Flag question Question text The correct definition of isotopes is _____. a. atoms of the same element containing the same number of protons but differing in the number of electrons b. atoms of the different elements that have the same number of neutrons but differ in the number of protons c. atoms of the same element containing the same number of protons but differing in the number of neutrons d. atoms of the same element containing the same number of electrons but differing in the number of neutrons Clear my choice Question 21 Not yet answered Marked out of 2.00 Flag question Question text In the double helix structure of DNA adenine pairs with _____ and guanine pairs with _____. a. cytosine; thymine b. thymine; cytosine c. uracil; cytosine d. guanine; adenine Clear my choice Question 22 Not yet answered Marked out of 2.00 Flag question Question text In oxidation, a substance loses electrons, or is oxidized. Select one: True False Question 23 Not yet answered Marked out of 4.00 Flag question Question text Imagine a hybrid cross in dogs. The female is a true-breed black, long-tailed dog.The male is a true-breed white, short-tailed dog. B – black hair, b – white hair, T – long tail, t – short tail. What is the ratio for the phenotype of the F2 generation? a. F1-generation is all pp, all white. b. F1-generation is all Pp, all purple; F1-generation half pp (white) and half Pp (purple). c. F1-generation is all Pp, all purple. d. F1-generation is half pp (white) and half Pp (purple). Clear my choice Question 24 Not yet answered Marked out of 2.00 Flag question Question text The symbiotic relationship in which both the symbiont and the host benefit is known as _____. Select one: a. commensalism b. mutualism c. parasitism d. predation Clear my choice Question 25 Not yet answered Marked out of 2.00 Flag question Question text An atom is defined as the smallest_____. a. particle of a molecule that reacts with other molecules b. particle of an element that can take part in chemical reaction c. particle of an isotope that can take part in a chemical reaction d. particle of a compound that can take part in chemical reaction Clear my choice Question 26 Not yet answered Marked out of 2.00 Flag question Question text What element is found in proteins but not in carbohydrates and fats? a. nitrogen b. calcium c. oxygen d. carbon Clear my choice Question 27 Not yet answered Marked out of 2.00 Flag question Question text When an acid is added to a buffered solution, the buffer will _____. a. accept H+ ions b. donate H+ ions c. accept water molecules d. donate OH- ions Clear my choice Question 28 Not yet answered Marked out of 2.00 Flag question Question text The electron configuration 1s22s22p6 belongs to _____. a. neon b. carbon c. oxygen d. nitrogen Clear my choice Question 29 Not yet answered Marked out of 2.00 Flag question Question text A solution with a low solutes concentration and a high water concentration is _____. a. hypertonic b. hypotonic c. osmoregulatory d. isotonic Clear my choice Question 30 Not yet answered Marked out of 2.00 Flag question Question text These are the sites of manufacture and storage of important chemical compounds used by the cells of autotrophic eukaryotes. Select one: a. plastids b. endoplasmic reticulum c. ribosomes d. the Golgi apparatus Clear my choice Question 31 Not yet answered Marked out of 2.00 Flag question Question text The form of carbohydrates that forms part of the exoskeleton in insects is called _____ . a. glycogen b. chitin c. cellulose d. starch Clear my choice Question 32 Not yet answered Marked out of 2.00 Flag question Question text The mass number on the periodic table refers to the _____. a. combined number of protons and neutrons of an atom b. number of protons in an atom c. number of electrons in an atom d. the combined number of protons and electrons of an atom Clear my choice Question 33 Not yet answered Marked out of 2.00 Flag question Question text Storage polysaccharides consist of _____. a. glycerol and fats b. phospholipids and fats c. starch and glycogen d. cellulose and chitin Clear my choice Question 34 Not yet answered Marked out of 2.00 Flag question Question text Which statement best the describes eukaryotic cell? a. DNA is found in the membrane-bound nucleus b. Consists of the cell wall. c. Consists of the plastids. d. DNA concentrated in the non-membrane bound nucleoid Clear my choice Question 35 Not yet answered Marked out of 2.00 Flag question Question text Isomers that are mirror images of each other but differ in shape due the presence of an asymmetric carbon. a. structural isomers b. enantiomers c. cis-trans isomers d. geographical isomers Clear my choice Question 36 Not yet answered Marked out of 2.00 Flag question Question text Disaccharide consist of two monosaccharides joined by a _____. Select one: a. disulfide bridge b. glycosidic linkage c. peptide bond d. ester bond Clear my choice Question 37 Not yet answered Marked out of 2.00 Flag question Question text Diploid is two sets of endoplasmic reticulum, smooth ER and rough ER. Select one: True False Question 38 Not yet answered Marked out of 2.00 Flag question Question text OH is the functional group that occurs in _____. a. carbolic acids b. ketones c. aldehydes d. alcohols Clear my choice Question 39 Not yet answered Marked out of 2.00 Flag question Question text Hydrophilic substances are _____. a. hypotonic solutions that have a higher water concentration than the surrounding area b. non-ionic and non-polar substances that repel water c. hypertonic solutions that have lower water concentration than the surrounding area d. polar or ionic substances that have an affinity for water