Biomolecules Questions and Answers

Order the molecules structures listed below from least condensed to most condensed Chromosome Naked DNA Chromatin Source Target

Which of the following events does NOT occur during a normal meiosis O Two haploid gametes fuse to form a diploid cell O Homologous chromosomes separate during meiosis I O Sister chromatids separate during meiosis II O One diploid cell produces four haploid cells

After the passage of the 13th 14th and 15th amendments African Americans continued to experience political and economic oppression mainly because Southern legislatures enacted Jim Crow laws the amendments were not intended to solve their problems poor communications kept people from learning about their legal rights O many African Americans distrusted the Federal Government

Question 24 The vast majority of the immigrants from Lebanon and Syria were O Jews Points 1 Muslims Christians O Druze

Choose the correct answer The development of wide scale industries in a country or region is called O Urbanization O Industrialization O Rural flight O Development

Question 18 Points 1 Who is considered the founder of modern economics The Physiocrats Thomas Malthus David Ricardo O Adam Smith

Question 1 of 10 Which sentence describes an example of a spontaneous mutation A Radiation causes chemical bonds to form between cytosines O B Compounds insert themselves into the double helix OC RNA polymerase cannot read a bent DNA strand and adds the wrong RNA nucleotide D An incorrect nucleotide is added during the process of DNA replication SUBMIT

Proteins 7MRNA7 Enzymes Amino acid metabolism Metabolism Lipid metabolism Carbohydrate metabolism

Complete the sentences Each blank is worth 1 point Word bank to choose from disulfide bonds hydrogen bonds ionic bonds ion dipole interactions van der Waals interactions There are two types of non covalent interactions that contribute to the formation and stabilization of the DNA double helix structure Hydrogen bonds You are incorrect ionic bonds X X occur between the stacked bases of one strand and occur between the bases connecting two strands together

What are the proper triple examples for the abiotic components a Plants animals and nutrients O b Fungi water and soil O c Animals parasites and bacteria d Viruses nutrients and rocks e Water heat and solar energy

The following is an analogy A rose is a rose is a rose True False

Excessive UV radiation causes a healthy tan along with many skin and immune system benefits only causes tissue damage and skin cancer in people with fair skin can cause tissue damage and can alter the DNA of skin cells which may lead to skin cancer is a potential treatment for COVID 19 infection because it is harmless to human cells

dy cavity houses the viscera whereas the ventral body cavity hoses the nervous system True False Question 5 2 points Listen Which of the following is false regarding water It helps to maintain temperature homeostasis by absorbing and releasing heat with little temperature change It is the most abundant and important inorganic compound in living organisms It is a necessary part of hydrolysis and dehydration synthesis reactions It is the universal solvent due to its poppolar properties

Bitter taste receptors have the lowest threshold for activation highest sensitivity because poisons are frequently bitter True False Question 5 1 point Listen respond to odorants and tastants in aqueous solutions Chemoreceptors Exteroceptors Nociceptors

Listen The oceans affect the biosphere in all of the following ways exce regulating the pH of freshwater biomes and terrestrial groundwater removing carbon dioxide from the atmosphere moderating the climate of terrestrial biomes producing a substantial amount of the biosphere s oxygen being the source of most of Earth s rainfall

Graph Effect of Different Factors The graph represents the average time taken for each balloon to inflate fully indicating the rate of yeast activation under different concentrations of the factors sugar salt vinegar and baking soda Factor Sugar Salt Vinegar Baking Soda Low Concentration 12 5 min 10 8 min 14 2 min 10 9 min Medium Concentration 8 2 min 10 5 min 9 8 min 10 7 min High Concentration 6 1 min 10 7 min 6 7 min 11 4 min

The flight system of the autonomic nervous system is referred to as the fight or Osympathetic division Osomatic division parasympathetic division peripheral division

Match the taste sensations to the chemicals that produce them 0000 alkaloids metal ions organic substances such as sugar and some lead salts hydrogen ions in solution glutamate and aspartate 1 bitter 2 salty 3 sour 4 sweet 5 umami

blood will be shunted to skeletal muscles and the heart rate and force of heartbeat will increase metabolic rate will increase glucose from the blood will be taken up by the liver for storage Question 5 2 points Listen Wing that would occur if someone was involved in a fight Blood vessels are almost entirely innerved by parasympathetic fibers so the parasympathetic division controls blood pressure True False

US 2 v Next each of the four major biomolecules identify the name and structure of its monomer nucleotide H O H Introduction to Biochemistry Mastery Test OH CH OH H OH H OH H OH Nucleic Acid monosaccharide amino acid 4 O H C CH NH OH Submit Test fatty acid Carbohydrate

A We can deduce that the genotype of the parents the arrow is pointing to is Tt X Tt B tt X TT I IV V C 60 tt X Tt

The model represents DNA replication Enzyme 2 DINAL INMNE Enzyme DNA 1 IND What does enzyme 2 do Enzyme 2 OA It adds nucleotides to the growing strands of DNA OB It builds RNA strands from sections of DNA OC It binds to the double helix and unzips the molecule D It chemically connects the two strando toga

Which of the following is NOT a product of glycolysis O Pyruvate O ATP O NADH FADH2

Are humans likely affected by biomagnification If so which foods might be dangerous

List 2 examples of renewable resources you use regularly

Why are hierarchical levels used in classification systems OA To keep organisms organized based on when they evolved B To show evolutionary relationships among organisms C To show when an organism developed a common ancesto D To keep organisms grouped based on unique traits

When nucleotides polymerize to form a nucleic acid a covalent bond forms between the sugar of one nucleotide and the phosphate of a second hydrogen bonds form between the bases of two nucleotides covalent bonds form between the bases of two nucleotides a hydrogen bond forms between the sugar of one nucleotide and the phosphate of a second

Question 5 of 10 This graph shows the heights of 50 14 year old male students Heights were recorded to the nearest centimeter cm Heights of Male Students Number of students 25 20 15 10 5 0 150 154 155 159 What approximate range of heights represents the middle 80 of the data A 150 cm 174 cm B 160 cm 164 cm 160 164 165 169 170 174 Height cm C 155 cm 169 cm

of acetylcholine from the terminal of a motor neuron is most directly linked to the entry of sodium into the axon terminal the exit of potassium from the axon terminal the entry of calcium into the axon terminal the entry of potassium into the axon terminal the exit of sodium from the axon terminal Question 12 1 point Listen In the sequence of permeability changes for a complete action potential the these events that occurs is

veoli Olarynx Requires Respondus LockDown Browser Welocam Sadat Attempt 1 Question 4 3 points Listen When you inhale does air flow into the lungs causing them to expand Or do the lungs expand causing air to flow in Explain I

In summation where on the neuron is the summation occurring on the dendrites on the axons at the synapse Oon the cell body in the nucleus

nsmitters are released from axon terminals via O passive transport osmosis endocytosis diffusion O exocytosis Question 9 1 point Listen Passive or leak channels in a cell s membrane

sten The operation of the sodium potassium pump moves Osodium and potassium ions out of the cell sodium and potassium ions into the cell sodium ions out of the cell and potassium ions into the cell sodium and potassium ions into the mitochondria Osodium ions into the cell and potassium ions out of the cell Question 14 1 point

PSPS and EPSPS arriving at the same neuron tend to kDown Brow add together and increase the chance of firing an action potential O add together and decrease the chance of firing an action potential Increase the polarity of the membrane and promote the firing of an action potential O O cancel each other out and promote the firing of an action potential

12 7 15 1 18 20 21 the vasa recta the renal artery and the blood in the renal vein O the blood in the glomerulus and the fluid in the Bowman s capsule the fluid in the collecting duct and the fluid in the distal tubule Question 23 1 point Listen What is the main function of the salty interior of the kidney O to aid with water reabsorption in the kidney O to help filter toxins from the blood O to help concentrate urea away from the capillaries O to attract regulatory hormones to the kidney O to help collect the Na for excretion

Which of the following correctly describes a strong oxidizing agent Selected answer will be automatically saved For keyboard navigation press up down arrow keys to select an answer a b C d ready to accept electrons negative reduction potential ready to donate electrons negative reduction potential ready to donate electrons positive reduction potential ready to accept electrons positive reduction potential

PRL travels in blood vessels to receptors in the mammary glands and triggers milk production the response Part C Malfunction in a control pathway for prolactin Suppose that a woman had to have part of her thyroid gland surgically removed She would most likely suffer from a condition known as hypothyroidism due to too little thyroid function Predict how this woman s hypothyroidism would affect prolactin levels in her body Which choice describes how surgical hypothyroidism would likely affect prolactin levels View Available Hint s O Thyroid hormone levels decrease TRH levels decrease and PRL levels decrease Thyroid hormone levels decrease TRH levels decrease and PRL levels increase Thyroid hormone levels decrease TRH levels increase and PRL levels decrease O Thyroid hormones levels decrease TRH levels increase and PRL levels increase O Thyroid hormone levels increase TRH levels increase and PRL levels increase Thyroid hormone levels increase TRH levels increase and PRL levels decrease O Thyroid hormone levels increase TRH levels decrease and PRL levels increase

Which of these is a product of Lactic Acid Fermentation ATP NAD Carbon Dioxide Ether

me Left 0 18 51 2 5 Shafiqa Hamzi Attempt 1 Cytoplasm Mitochondria zoom ELD O own 4 3

me Left 0 23 34 10 2 Shafiqa Hamzi Attempt 1 Ribosome Nucleus Vacuole Vesicle 7 8 12 9 13

Time Left 0 23 53 2 5 Shafiqa Hamzi Attempt 1 Cytoskeleton Mitochondria Vacuole Nucleus You 4 3

Use the drop down menus and what you have learned about fossils to complete the paragraph A fossil is the preserved remains of a living thing Many fossils form in still water where parts of the organism decay The parts such as bone and teeth remain

Listen point Salivary amylase digests monosaccharides O glucose Ostarches O maltose O protein

The absorption of fats differs from that of carbohydrates in that the processing of fats does not require any digestive enzymes whereas the processing of carbohydrates does fats but not carbohydrates are digested by bacteria before absorption most absorbed fat first enters the lymphatic system whereas carbohydrates directly enter the blood O fat absorption occurs in the stomach whereas carbohydrates are absorbed the small intestine carbohydrates need to be emulsified before they can be digested where do not

Match the glial cells to their correct description Form myelin sheaths are thicker nerve fibers in the CNS Cells that line the central cavities of the brain and spinal cord Versatile star shaped cells that support and brace neurons and control the 2 Microglial cells permeability of capillaries in 3 Ependymal cells the CNS 4 Oligodendrocytes 5 1 Astrocytes Small ovoid cells that can transform into macrophages to Satellite cells phagocytize microorganisms and debris 6 Schwann cells Form myelin sheaths around thicker nerve fibers in the PNS Surround neuron cell bodies in the PNS

The function of a neurotransmitter is determined by the receptor to which it binds True False

Researchers found a strain of E coli bacteria that had mutation rates one hundred times higher than normal Which of the following statements correctly describes the most likely cause of these results There were one or more base pair mismatches in the RNA primer The DNA polymerase was unable to add bases to the 3 end of the growing nucleic acid chain The proofreading mechanism of DNA polymerase was not working properly The single strand binding proteins were malfunctioning during DNA replication

Albinism is a recessive trait A man and woman both show normal pigmentation but both have one parent who has albinism without melanin pigmentation What is the probability that their first child will have albinism 01 1 2 1 4

Mendel s law of independent assortment has its basis in which of the following events of meiosis I alignment of pairs of homologous chromosomes along the middle of the cell the division of cells at telophase synapsis of homologous chromosomes crossing over of homologous pairs of chromosomes

When a neuron responds to a particular neurotransmitter by opening gated ion channels the neurotransmitter is serving as which part of the signal pathway transducer Oresponse molecule relay molecule signal molecule