Bio EOC

Réussis tes devoirs et examens dès maintenant avec Quizwiz!

coden is a sequence of three nucleotides that code for an amino acid. if the DNA sequence is shown here goes through transcription and translation how many amino acids will result from the sequence

3

why does the study of cell membrane lead to better understanding of cell function

All materials needed for cell functions must pass through the cell membrane

which statement best compares a eukaryote and prokaryote

Eukaryotes have membrane-bound organelles, while prokaryotes have few specialized structures.

to help patients replenish bodily fluids quickly during an illness doctors need to understand how cells behave in their environment. Doctors have confidence in what they know about how cells behave because

South theory has been tested refined and observed to be true over hundreds of years

in which of the domains would it be easiest to determine the phylogenetic relationship among organisms

The eukaryotes are easiest because they tend not to share genetic material with other except when they are reproducing sexually

oxygen is a product of photosynthesis. The primary role of this oxygen in cellular respiration is

act as an acceptor for electrons and hydrogen forming water

The sodium potassium ion pump found in most cell membranes is made of which of the following basic structural components

amino acids

which of the following best compares the structures found in plant cells and animal cells

animal cells do not contain chloroplasts cell walls or a large central vacuole while plant cells do

which of the following best compares the structure of lipids and carbohydrates

both consistent of carbon hydrogen and oxygen but carbohydrates have repeating structure units and lipids do not

in pea plans that allele for white flowers is recessive to the allele for purple flowers. in a generation of pea plants 89 produce purple flowers in 31 produced white flowers. which of the following is the best conclusion you can make about the parent's plans of this generation

both parent plans are heterozygous for flower color

which statement describes how photosynthesis in cellular respiration are interrelated

carbon dioxide and water released by cellular respiration are used in photosynthesis

which of the following best explains why meiosis results in greater genetic diversity than mitosis

daring meiosis chromosomes absorbed themselves independently of each other which allows for more possible combinations of chromosomes

what is a primary function of the cell membrane

defending against foreign particles

which of the following best describes how the process of crossing over during meiosis leads to an increase in genetic diversity

during prophase I, DNA segments are exchanged between a homologous chromosomes, resulting in different combinations of alleles

The allele brown eyes is dominant to the allele for blue eyes. which of the following best explains how two brown-eyed parents could produce a blue-eyed child

each parent must be carrying the recessive allele for blue eyes

which of the following best describes a characteristic that distinguishes fungi from other kingdoms

fungi are multicellular and breakdown dead plant and animal matter

based on your knowledge of scientific investigations, which stage of scientific investigation did the invention of the microscope significantly advance

gathering the data for the investigation

what are the reactants of cellular respiration

glucose and O2

a variety of organic molecules have been found in meter rights that have landed on Earth including individual amino acids and lipid molecules. today however no microspheres have been found on these meteor. why is it unlikely that microspheres will ever be found on a meteorite even though lipids can form on them

groups of lipids will only form into microspheres that when they are in liquid water

Early elements of the South theory followed soon after the development of Hooke's light microscope. what does this relationship suggest about the evolution of the cell theory since Hooke

improvements in technology are closely related to changes in the cell theory

which of the following best describes a result of the polar nature of water molecules

ionic compounds dissolve easily in water

which of the following best summarizes why the technology invention of microscope was important to biology

it allowed for development of the cell theory

as food travels it through digestive system it is exposed to a variety of pH levels. this stomach has a pH of two due to the presence of a hydrochloric acid (HCI) and the small intestines has a pH ranging from 7 to 9. HCI converts pepsinogen into pepsin and enzyme that digest proteins in the stomach. which of the following most likely happens to pepsin as it enters the small intestine

it becomes inactive

an unknown plant species has still matter xylem and phloem. it reproduces sexually and has male pollen cones and female seed cones. which of the following is the most logical conclusion about the classification of this plant

it is a Gino sperm and belongs to the division Coniferophyta

assume a group of scientists has managed to set up an experiment simulating the conditions of early Earth that result in a cell with DNA using RNA to produce proteins from amino acids as modern cells do. what conclusion could they draw from this experiment

it is possible for a cell similar to a modern cell to form under the conditions of the experiment

a student is conducting an investigation to determine the effect of temperature on the metabolism of yeast. yeast and sugar are added to water, the gas in water produced is captured, and it's volume is recorded. which variables should be held constant during this investigation

mass of yeast and mass of sugar

some organisms are able to reproduce asexually through mitosis well cells of organisms that produce sexually will undergo meiosis to produce gametes. which process do you predict would be most beneficial to a species during a drastic change in environment conditions

meiosis; it results in more genetic variation which would help ensure the species will survive

which of the following correctly compares two of the divisions of the plant kingdom

non-vascular plants lack xylem and phloem and produce asexually while and geosperms have xylem and phloem and produce sexually

which of the following best describes the difference between the functions of nucleic acid and enzymes

nucleic acid contains genetic code for protein synthesis while enzymes catalyze a chemical reactions

why do cells need TRNA and MRNA

only TRNA bends into a shape that can carry specific amino acids

water has a much higher specific heat than most other covenant compounds. what do you predict might happen if water had a low specific heat instead

organisms that are sensitive to change in temperature would die

The activities that take place to meet human needs can often be harmful to ecosystems. by developing sustainable practices however we can help protect our which of the following changes that would be most helpful in reaching sustainability

planting trees to replace those that are cut down by logging

many insects such as mosquitoes and dragonfly spend their juvenile stage as aquatic larvae before becoming winged in airborne adults. most years these insects are extremely abundant in the arctic tundra in a summer. what my account for this

pools of water which make good breeding areas are plentiful in summer as the preforest melts

which of the following best compares the membranes found in different types of cells

prokaryotes and eukaryotes both have cell membranes but eukaryotes also have membrane-bound organelles

a population of rodents become stranded on a remote island. eventually the population reaches the island's carrying capacity. at this point the birds and death rates are

relatively equal

which of the following describes how an abiotic factor can impact the population dynamics in an ecosystem

seasonal variations in temperature can cause some of the individuals in the population to die

how is the scientific theory of evolution supported by the comparison of the skulls and skeletons of modern humans and extinct hominids

similarity in skull shapes hands and hips between extinct hominids and human supports a common ancestry

which of the following best explains the difference in the amount of available energy in the trophic levels and the dessert ecosystem

there is less available energy in the fourth trophic level because of the loss of energy through metabolism in each of the lower trophic levels

which of the following best explains the difference in the amount of energy available in each tropic level of this food web

there is less available energy in the seal than there is in the 510 phytoplankton

hemophilia is a sex-linked recessive trait. which of the following describes the probability of hemophilia in the offering of a man who does not have hepophilia into woman who is heterozygous carrier

there's a 0% chance that their daughter will have hemophilia

paleontologist have compared modern human skeletons to fossils of hominids from 2 to 5 million years ago before the appearance of modern humans. they found certain features like the shape of their hips and the way the spine supported the body was similar to the modern human skeleton structure. which of the following best describes why the discoveries of the hominid fossils are important for understanding modern human evolution

they are evidence of the transitional species that show how modern humans evolve from ape-like ancestors

what similarities are there between the ways archaea and bacteria react to difficult environmental conditions

they both form endospores for protection or develop cilia or flagella to swim away

The choices that humans make everyday affect the environment. sometimes our lifestyles can harm the environment rather than protect it. which of the following would be most helpful in protecting the environment and achieving sustainability

using solar power to generate electricity

based on this experiment which of the following should be inferred about cells with semipermeable membrane

water enters the cell when placed in environments of high water concentration

water is essential for life. it's special properties make water the single most important molecule implant life. which of the following properties of water enable it to move from the roots to the leaves of plants

water exhibits cohesive behavior

which of the following describes how the amount of energy changes as it flows from one trophic level to the next in the marine food web shown below

when seabirds consume fish about 10% of the fish's energy is transferred to the seabirds

a cell is replicating it's DNA. part of the DNA strand reads a - c - c - g - t - a - c. the new strand built off this section reads t-g-g-a-a-t-d. what effect might this have when the DNA replicates in the future

when the new strand is used as a template the strand built from it will differ from the original DNA

which equation describes what happens in photosynthesis

6CO2 + 6H2O + energy → C6H12O6 + 6O2

when an organism has more than 10 fingers or toes the condition is known as polydactylism. Although polydactylism is rare it is a dominant trait. if two cats that are heterozygous for polydactylism meat and have illiterate with a total of 12 kittens how many of them would you expect to have more than 10 fingers or toes

9

which of the following best compares the processes of mitosis and meiosis

Mitosis involves one division cycle and results in diploid daughter cells, while meiosis consists of two division cycles and results in haploid gametes.

which of the following correctly traces the energy transfer through the trophic levels in the marine food web shown below

Phytoplankton->krill->fish->seal

If a company claims that it's product has been proven scientifically, which of the following should have taken place if the results are to be considered reliable

Results should shave been peer reviewed and repeated producing the same findings

why can bacteria recognize a human gene and then produce a human protein

The basic components of DNA are the same in humans and bacteria.

some proteins catalyze a biochemical reaction. if a genetic defect prevented a protein catalyst from being produced which of the following do you predict would happen in the cell

The reaction the protein catalyzes would proceed very slowly or not at all

which of the following characteristics defines a cell as eukaryote

having a nucleus

based on the illustration above what do the similarities between human and chimpanzee hands and feet suggest about the two different organisms

humans and chimpanzees both developed five digits on their hands and feet suggesting they have a common ancestor

in which of the following circumstances would be the most likely for large organic molecules to form during a laboratory experiment

if RNA segments that could act as catalysts forms

which of the following provides the best argument for separating archaea and bacteria into their own domains instead of leaving them together in the single kingdom monera

it was discovered that they make their remembrance differently and copy their DNA differently

due to human encroachment the range of Florida panther has been reduced to very small area in South Florida. predict the long-term effect of this isolation on the conditions required for natural selection

it would reduce the panthers' cupacity for inherited variation and would leave them vulnerable to disease in genetic abnormities

how does comparing the skeletons of these animals provide support for scientific theory of evolution

it's just possible common ancestry between organisms

carbon dioxide is important in our atmosphere because it is required for photosynthesis and traps some heat keeping the earth warm. however human produced carbon dioxide is a problem because it

leads to higher global temperatures

rainbow trout need at least 6.0 mg/L of dissolved oxygen to survive. biologists are trying to reestablish rainbow trout in the mountain stream but the stream is only 5.5 mg/L of dissolved oxygen. which of the following would be the most useful to encourage the development of the rainbow trial population

remove dams along the stream to allow water to flow faster

scientific law and scientific theory are similar in that both

represents a large amount of scientific investigation and evidence

One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. according to this theory which of the following events would need to occur first for life to evolve

synthesis of organic molecules

suppose a family of black wolves migrates across a land bridge to a region supporting a large population of gray wolves. a few generations later the population consists entirely of wolves with black and gray markings. which of the following best describes the mechanism that caused this change in the population of the wolves in the region

the following a black wolf jeans across the land bridge added to the gray wolf populations gene pool increasing the frequency of the genes for black fur in the population

what are frogs that live in Greek Islands in the Mediterranean were separated from mainland water frogs when saltwater levels rose to form the islands following difference in the isolated populations to develop. suppose one large group of frogs on the mainland uses a low-pitched call to attract mates while otherwise identical frogs on a nearby island use a high-pitched call. a boat carries a few high-pitched frogs in its cargo to the mainland. which of the following answer choices best predicts the outcome of this event

the frogs from the islands introduce new jeans to the mainland gene pool causing a change of high pitch mainland frog population

a group of well separated islands in the Pacific Ocean has a population of hibiscus plants that produced either orange or white flowers. on one of the islands most of the hibiscus plants that were killed a few years ago by a volcanic lava flow. why is there a greater percentage of orange hibiscus plants on this island than on the other islands

the limited population size after the lava flow resulted in a limited gene pool causing genetic drift in future generations of hibiscus plants on this island

in which of the following ways are the fungus-like protists similar to the heterotroph protists

they both need to gather food from their environment

if a snake species were introduced to an ecosystem where it had no natural predators what long-term effect do you predict the snakes would have on the population dynamics of the ecosystem

they would compete with native snakes species for resources causing a decline in native snake population and possibly extinction


Ensembles d'études connexes

Introduction to IOT Final Exam review

View Set

Combo with "MGMT 468 Ch. 5 Quiz" and 1 other

View Set

Physics 211 Multiple Choice Final Prep

View Set

Exercise Biology Chapter 8 Review

View Set