Biology Questions

The structures found in vascular plants in which specialized spore producing leaves are clustered together called Prothalia Archegonial heads Rhizomes Strobili Sori Question 15 A common species of liverwort is Rhizopus Coprinus Marchantia oltinhum 0 1

The goal of O a to summarize the fossil record b to explain how all species are related to each other c to be a library of all life that has ever lived d to describe how natural selection works

Which of the following organisms contain special cells called heterocysts a Anabaena b E coli c Oscillatoria

Most bacteria have an extra chromosomal segment of DNA called a plasmid that is in eukaryotes A found C inactive B not found D proactive

Question 11 of 25 In E coli bacteria the lac operon contains genes that code for enzymes that break down lactose If the bacteria are in an environment with no lactose how will the expression of the lac genes be affected A The genes will be turned on B The genes will be turned on and off in cycles C The genes will be turned off OD Some of the genes will be turned on and some will be turned off

Most bacteria have an extra segment of chromosomal DNA called a that is in eukaryotes A codon C pili B plasmid D chloroplast

Which of the following is NOT true according to Cell Theory A All cells arise from pre existing living cells B All cells are roughly square in shape C All living organisms are composed of one or more living cells D The cell is the basic unit of life

Plant cells placed in HYPOTONIC conditions will remain A wilted C flaccid B turgid D plasmolyzed

Spleen cells are taken from a mouse immunized with the LCM virus 2 assays are used to determine antigen specific functional activity of the s Assay 1 the spleen cells T cells are incubated with macrophages that have been briefly exposed to LCM virus phagocytized the virus produs response Assay 2 the spleen cells are incubated with LCM infected target cells lysis of the infected target cells is considered a positive response Activity of which cell population is detected in Assay 2

Over fertilizing your yard puts too much solute around the plant and will result in of the plant cells A Isotonia C shriveling B plasmolysis D swelling

A the most common form of membrane transport B the least common form of membrane transport C rarely seen in animal cells D the most energy dependent form of membrane transport

A eukaryotic cell is whereas cells contain free floating organelles and no nucleus A compartmentalized B open in its structure S without DNA

When cell membranes form they have a polar head and a non polar tail This structure is called a n A phospholipid bilayer C infolding B organelle D nucleus

The mechanism that permits immunoglobulins to be synthesized in either a membrane bound or secreted form is O allelic exclusion O codominant expression O class switching differential mRNA processing

Recombination of immunoglobulin gene segments serves to O promote Ab and TCR diversity O assemble a complete variable region coding sequence for an antibody that B cell will produce O allow changes in coding information during B cell development original germinal DNA is different from that found in mature B cell all of the above

IgM in humans and mice the antibody constant C heavy chain gene segments are in which order 5 V

Oxygen is a highly electronegative atom What influence does this property have on water molecules A Confers polarity C Confers a trigonal shape B Confers low specific heat D Confers a linear shape

The bonding properties of atoms are such that unfilled valence shells bloody stumps are unstable which supports A biotic genesis C phosphorus earth s crust B abiotic genesis D atomic and cellular theories

The ultimate tool to provide evidenc for evolution which Darwin did not have access to is A the fossil record C thermocyclers to incubate bacteria B molecular genetics or DNA technology D air travel

The sugar glider and flying squirrel may have similar structures because of but they are not closely related A random mating C convergent evolution B parallel evolution D divergent evolution

Which of the following is true postzygotic reproductive isolation A Mechanical isolation B Habitat isolation C Gametic isolation D Hybrid inviability

In a H W question about a recessive trait calculate first A 2pq B p2 C aa D q2

When a catastrophe causes the genetic diversity of a population to change it is known as A the Bottleneck Effect C Sexual Selection B Natural Selection D a Small Population Effect

What is differential success in reproduction A Individuals can acquire traits to reproduce successfully B Individuals that can defend territory will survive C The strongest will survive but may not pass on their traits D Populations will survive reproduce and pass on their traits

How is the DNA in a prokaryote different from the DNA in a eukaryote A DNA in prokaryotes floats throughout the cell B They have different numbers of chromosomes OC Eukaryotes do not have chromosomes OD Only prokaryotes are haploid

What type of elevation is shown here O a flat O b pulvinate O c umbonate O d convex O e raised

1 1kbp Hindill 0 15 kbp Oc3 O d 4 O e 5 Hindill amp 0 25 kbp 1 6 kbp EcoRI How many DNA fragments will EcoRI produce from the plasmid shown in Figure 1 Oa 1 Ob 2

What is the form of this colony O a circular O b filamentous O c rhizoid O d irregular O e punctiform

A botanist discovers what she thinks may be a new species of asexual wildflower growing in the Chocolate Mountains in the deserts of CA Which of the following species concepts would not be useful in helping her define this population as a new species O Biological species concept O Ecological species concept O Morphological species concept O Genetic species concept

63 1 66 69 72 1 75 78 Question 32 1 point Dicamba has caused concern because of drift onto non GMO crops none of the listed responses is correct has caused concern because it is less effective than glyphosate is only allowed to be used on non GMO crops is the most commonly used fertilizer on GMO soybeans was one of the ingredients in Agent Orange Question 33 1 point

Which of the following is NOT one of the four characteristics of a malignant melanoma A Color varies from black to brown to red within the same lesion B Each side of the lesion has a different shape asymmetry OC It grows slowly on the skin and does not metastasize to other parts of the body D Border or edge is irregular and ragged

I have been using this product for the past seven years and the results have bee exceptionally great I whole heartedly recommend the product It is an example It uses an extended definition It makes use of testimony

1 When there is a cut in the skin and bacteria enter the body the immune system responds First macrophages approach the area of the cut Next the macrophages surround any bacterial cells and engulf them What feature of the immune system is best described by this scenario OA self recognition which is a part of adaptive immunity O B the phagocytotic barrier which is a part of innate immunity OC the inflammatory barrier which is a part of innate immunity OD antigen specificity which is a part of adaptive immunity

foods highly enriched for the indicated macromolecules Select a single purpose fulfilled by each subgroup of macromolecule Finally answer the extra info to fill out information specific to the macromolecular group Macromolecule Purposes Carbohydrates Proteins Nucleic Acids Lipids Dietary examples Energy Structural Information 2 Energy Structural Information 1 3 Energy Structural Information 2 1 3 Energy Structural Information 2 1 3 Purpose Subgroups 1 galactose 4 2 sucrose 3 ribose 4 no specific dietary 1 NAD NADH source 4 cellulose 1 hormones 2 enzymes 2 DNA 1 triglycerides 2 phospholipids 3 steroid hormones 4 polyunsaturated fatty acids Extra Info Which form is directly absorbed by cells Which form is used for storage What are the four levels of protein structure Which polynucleotide is used for genetic storage Which is used for genetic expression Which lipid is fully hydrophobic What is the aggregate structure formed by phospholipids

1 2 3 5 6 7 9 10 An organism s combination of alleles written with 2 letters An organism s physical expression of its genes If an organism has 2 different alleles for a trait also known as hybrid 8 If an organism has 2 identical alleles for a trait also known as purebred Sex linked trait in males that is recessive and found on the X chromosome The The inherited independently of one another The states that the two alleles for a trait separate during gamete formation and that a parent will pass down one allele randomly to their offspring The different forms of a gene 12 A disease that is caused by a dominant allele A trait like skin color whose phenotype is influenced by more than one gene 15 An allele that is only expressed if the organism is homozygous for the trait These alleles can be masked by other An allele with the ability to mask another allele represented with a capital letter 13 14 of a fertilized egg resulting in a female is 2 states that genes for different traits are Word Bank A Alleles B Codominance C Colorblindness D Dominant E Genotype F Heterozygous G Homozygous H Huntington s disease Incomplete dominance 1 J Law of Independent Assortment K Law of Segregation L Phenotype M Polygenic traits N Probability O Recessive This results in a third phenotype in which the expressed physical trait is a combination or blend of the phenotypes of both alleles This results in offspring with a phenotype that is neither dominant nor recessive Respond to the following prompts 16 How many alleles in offspring s cells are inherited from each parent One Allele 17 Female egg cells can only carry one X chromosome and male sperm cells can cany one X one Y chromosome then what percentage of sperm cells carry an X chromosome For an egg fertilized by a sperm what percentage will be female 18 Why are the principles of probability useful in genetics HINT Punnett Squares To Prodict the outcomes of Genetic crosses 19 Complete the Punnett square to the right T tall and t short What percentage of the offspring are expected to be short T T TT

READING TOOL Compare and Contrast As you read diagram to compare and contrast density dependent limiting factors limiting factors Density Dependent Limiting Factors miting Factor Both Density Independent limit population size Once you have finished the Venn diagram categorize the following scenarios as density depe and density independent limiting factors cenario A A flood wipes out all the plant species that live on a riverbed cenario B A pack of wolves migrates to a new valley and eats all the deer that inhabit that enario C A large population of zebras is killed due to a contagious virus enario D A drought kills many of the deer that live in a valley

What does the Constitution demand of the president Select one O a Faithfully execute the laws of the land O b Enforce the will of the people Oc Check the powers of the Judicial Branch O d Follow the orders and the directions of Congress All legislation passed by Congress is sent to the president for approval Select one O True O False The president s primary role is to t Select one O a Advise and consent on O b O C Sign or veto O d Create debate and approve Enforce administrate and carry out the laws of the land

3 The two greenhouse gases that have the greatest impact on climate change are A chlorofluorocarbons and water vapor B methane and water vapor C nitrous oxide and methane D methane and carbon dioxide

Intracellular wood chippers known as break down proteins into component parts peptides so that they can be recycled reused or transported by TAP proteins to be presented at the cell surface by molecules proteasomes MHC II O lysosomes MHC II proteasomes MHC I lucocomoc MLICI

point ad the statement Decide whether it is describing a density dependent or density independent limiting factor Flood causes a landslide and all the oak trees are destroyed as it is washed away O Density independent Density dependent

Select the correct number that matches the correct structure Which structure transports urine to the bladder by peristaltic action cto 2 3

Hot dogs labeled No nitrates or nitrites will have what substance added by manufacturers carrot juice BHT celery juice propionic acid None of these options is correct lemon juice Question 3 1 point Lectins are carbohydrates that interfere with digestion Orequire a Proposition 65 warning in California are not present in canned beans should be avoided because they raise blood cholesterol are found only in animal products Onone of the listed responses is correct

The reason why some individuals have brown eyes and other have blue eyes is due to Choose all that apply Silent mutations Missense mutations Single nucleotide polymorphisms

If the frequency of the black allele B allele for the moth coloration gene in the newly founded island population of moths in your GENETIC DRIFT Lab simulation was 78 what was the frequency of the white allele b allele in that same population at the same time 19 5 22 39 78 4 Impossible to determine from the limited information given

Assessment Question 4 Where can you find your state specific Lottery information to sell Lottery tickets and redeem winning Lottery tickets Barcode and Quick Reference Guide Lottery Terminal Handbook Lottery vending machine OneWalmart using Handheld BYOD Submit Close

is that a cell pinched off and incorporated a more primitive cell which then functioned as an organelle A tenant of A spontaneous formation B cell fragmentation C endosymbiotic theory D exosymbiotic theory

What is the difference between the two sentences below He searched for his friend at the restaurant Frantic he anxiously searched for his long lost friend in the crowded restaurant The second sentence uses adjectives and adverbs to communicate tone and pain vivid image for readers There is no difference both sentences use vague pronouns The second sentence is wordy

What can be deduced from the given passage Air pollution is on the rise in urban areas It is due to the increased traffic congesti and rising number of factories It is adversely affecting the health of people residing the cities making them vulnerable to respiratory ailments The writer has used the testimony to back his point This is a cause and effect structure The writer has cited from a book

Q6 9 Why is it important to flatten the curve by reducing the peak number of infections during an epidemic Flattening the curve hastens the arrival of herd immunity for the population Flattening the curve reduces the likelihood of exceeding the health care system s capacity Flattening the curve eliminates the need for community mitigation strategies like social distancing O Flattening the curve reduces the number of people who need to be vaccinated

17 In prion diseases fibril and aggregate formation is caused by B sheet formation within a prion protein molecule B sheet formation between different prion protein molecules a helix formation within a prion protein molecule a helix formation between different prion protein molecules