Answer:
.
Explanation:
____________ are made of a series of paired statements that describe physical characteristics of different organisms.
Answer:
taxonomic key
this is A series of paired statements that describe the physical characteristics of differnent organisms.
Answer:
taxonomic key
Explanation:
A series of paired statements that describe the physical characteristics of differnent organisms.
Suppose an explorer discovered a unique new species of plant and collected a sample for analysis by a geneticist. The geneticist then isolated chromatin from the plant sample and examined the chromatin using electron microscopy. The chromatin observed was organized in a way that is similar to beads on a string A small amount of nuclease was then added, which was observed to cleave the string into individual beads that each contained 280 bp of DNA.
Histone H1 H2A H2B H3 H4 H7 (new histone)
Percentage 12.5% 25% 25% 0% 26%
After thorough digestion with more nuclease, only a 120 bp fragment of DNA remained attached to a core of histone eins. Analysis of the histone core revealed the data dicated in the table to the right.
Using the data provided, determine the conclusions that the geneticist could make about the likely structure of the nucleosome in the chromatin of this new plant species
A. The nucleosome core contains a heterodimer of the histones H7 and H1
B. The nucleosome core contains two each of histones H2A, H2B, and H4
C. The nucleosome core contains a homodimer of the histones H2A, H2B, and H4
D. The nucleosome core contains one each of histones H1 and H7
E. The nucleosome core histone H7 replaces the standard histone H3
my brain can't process this lol
Hello who’s good at biology guys I need someone to help me with the test
I Dont Even Know If Am Good In Biology Or Not
But Some Chums Might Give You A Hand
Which energy source produces less negative
environmental impacts
A)Renewable Energy Sources
B)Fossil Fuels
Answer:
renewable energy sources !
Explanation:
fossil fuels are bad for our enviroment :)
2. A hormone that is produced by the endocrine system targets specific
cells ir many different parts of the body. Which of the following
mechanisms explains the best way for the hormone to efficiently reach all
of its target cells?
The hormone is released into the bloodstream where it can be carried throughout the
body to the target cells with specific receptors
The hormone reacts with neurons close by that signal the target cells throughout the
body
The hormone is transported by local regulation to cells close by that trigger the target
cells
The hormones moves throughout all the cells until it reaches the cells with the
specific receptors for the signal
Hurry please I’m taking a exam
Answer:
The correct answer is the first option:-
The hormone is released into the bloodstream where it can be carried throughout the body to the target cells with specific receptors.I learnt in biology that hormones are transported through blood so they reach the specific receptors and act upon them so am sure this is the answer!.
The other options aren't right for the question.
What does the field of proteomics study? The structure and function of cellular lipids and how they interact to contribute to traits. The structure of carbohydrates and how they are converted into a useable form of energy for the body. The interaction between cellular proteins and how they make up the bulk of the cell membrane. The structure and function of cellular proteins and how they interact to contribute to traits. The structure of prions and how they can lead to various diseases within the body.
Answer:
The structure and function of cellular proteins and how they interact to contribute to traits.
Explanation:
Proteomics is a research area that studies proteomes and their interactions with other cellular components (e.g., transcription factors involved in DNA-protein interactions, ribonucleoprotein complexes involved in RNA-protein interactions, etc). A proteome can be defined as the entire set of proteins synthesized by an organism. The proteomics field allowed us to identify common protein functions (structural and enzymatic functions), as well as understand how protein expression (which is regulated by genetic and environmental factors) influences cellular metabolic activities (e.g., iron uptake).
the measurement of the matter in the universe is called
Answer: mass
Explanation:
Which of the following is a density-dependent factor?
(a)habitat size
(b)volcanic eruptions
(c)cold weather
(d)food availability
Answer:
A
Explanation:
Answer: (D) food availability
Explanation: its the only one that is density dependent, all the others are density independent.
3. When the mRNA is translated, the order of its codons determines the order of amino acids in the resulting polypeptide O a. True O b. False
Answer:
True
Explanation:
I need help please help
Answer:
its d cause
Explanation:
Correlative Conjunctions are pairs of words used to connect two parts of a sentence with equal value.
4. How does a sound wave vibrate?
Are the energy resources used at school renewable or nonrenewable
Answer:
Resources are characterized as renewable or nonrenewable; a renewable resource can replenish itself at the rate it is used, while a nonrenewable resource has a limited supply. Renewable resources include timber, wind, and solar while nonrenewable resources include coal and natural gas.
Explanation:
hy please make some questions from this passage please i want to ask my students thank you
Explanation:
1) Write the balanced chemical equation of photosynthesis.
2) What is the role of chlorophyll in the process of photosynthesis?
3) What happens to the light energy that is absorbed by the chlorophyll?
2. Which part of a eukaryotic cell contains the instructions on how to recombine the molecules in nutrients into new molecules that the cell can use?
A. DNA in the nucleus
B. Chlorophyll in chloroplasts
C. Water in vacuoles
D. Digestive chemicals in lysosomes
How much has the greenhouse gas carbon dioxide increased in the air just in the last few years? ITS DUE IN A FEW HOURS PLEASE HELP!
Answer:
approximately 2.3 parts per million (ppm) per year
Explanation:
In 2019, the global amount of atmospheric carbon dioxide (CO2) has been estimated at approximately 410 parts per million (ppm). These levels are higher than at any time in the last 800,000 years, and it has been estimated that in 2025 the CO2 levels will be higher than at any time in the last 3.3 million years. In 2018, there has been an increase of approx. 2.5 ppm, the same increase observed between 2017 and 2018. Moreover, the average increase of the CO2 levels in the atmosphere between 2009 and 2018 was 2.3 ppm each year.
state how the protein and energy requirements of the following will differ from those of a 16 year old female who does not take much exercise (1) An elderly person (2) a 2 year old child (3) a pregnant women (4) a male athlete
Answer:
Elderly people need a lot of protein but less energy and a pregnant woman need both nutrition enough to cell function and tissue formation of the embryo and more equal does the the 2 year old baby need both the nutrition.
Which animal in a pond food chain would be on the same trophic level as a snake in a grassland ecosystem?
(A) Algae
(B) mosquito larva
(C) fish
(D) racoon
In a pond food chain ecosystem, a fish feed on mosquito, a producer. The fish may get eaten by a racoon, which in turn is consumed by a snake. In a pond, algae is autotroph. So the correct option is D (racoon).
What is trophic level in ecosystem?
Trophic level is defined as the ranking of an organism in the food chain and which differ from a value of 1 for primary producers to 5 for marine humans or mammals.
Racoon is mammal and omnivorous whereas the snake is carnivorous animal. In a pond ecosystems, the biomass pyramid is inverted.
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Which of the following are not found in Cyanobacteria?
Answer:
Like all other prokaryotes, cyanobacteria lack a membrane-bound nucleus, mitochondria, Golgi apparatus, chloroplasts, and endoplasmic reticulum. All of the functions carried out in eukaryotes by these membrane-bound organelles are carried out in prokaryotes by the bacterial cell membrane.
According to the passage, which of the following topics of study was the most crucial to his final analysis?
The study of statistics and probabilities
The study of plant varieties
The study of agriculture
His study of the experimental method
Answer: The study of plant varieties.
Explanation:
This question relates to the studies that Gregor Mendel, founder of modern genetics, performed at the University of Vienna.
Experimenting on pea plants, Gregor Mendel was able to establish a lot of the rules of heredity that we know today even though his research was not fully appreciated or understood during his own life.
He credited the study of plant varieties to have been most crucial to his final analysis because farmers had been crossbreeding varieties for millennia to bring about better traits in plants.
How did a famous event change the course of the American Revolutionary War? in essay form pls
Answer:
The American Revolution was a political battle that took place between 1765 and 1783 during which colonists in the Thirteen American Colonies rejected the British monarchy and aristocracy, overthrew the authority of Great Britain, and founded the United States of America. See the fact file below for more information and American Revolution facts.
-The American Revolution, also known as the Revolutionary War, began in 1775.
-British soldiers and American patriots started the war with battles at Lexington and Concord, Massachusetts.Colonists in America wanted independence from England.
-The British government attempted to pass some laws, enforce several taxes, and increase more control over the colonies.
-The colonies strongly objected to these laws and taxes.
-They wanted England to have no control over them.
-For ten years before the war actually started, there was a lot of tension between England and the colonies.
-The colonies had no central government at the beginning of the war, so delegates from all the colonies were sent to form the first Continental Congress.
-George Washington, a former military officer and wealthy Virginian, was appointed Commander in Chief of the Continental Army.
-Members of the Continental Congress wrote a letter to King George of England outlining their complaints and declaring their independence from England.
-On July 4, 1776, the Continental Congress adopted the Declaration of Independence, in which the colonies declared their independence from England.
-The war ended in 1783, and the United States of America was born.
Explanation:
Signal Sequences: 1)A signal sequence is made of: a.Nucleotides b.Amino acids c.Lipids d.Carbohydrates 2)All protein synthesis starts on ribosomes that are located in the _________________. 3)If a molecule lacks a signal sequence it will end up in the ______________ 4)Proteins with a nuclear localization sequence (NLS) are generated on ribosomes located in the ___________________. 5)Proteins with a mitochondrial signal sequence are generated in ribosomes located in the _________________.
Answer:
1. Option B
2. cytoplasm
3. cytosol
4. nucleus
5. mitochondria
Explanation:
1. Option B
A signal sequence consists of hydrophobic amino acids .
2. cytoplasm in prokaryotes
3. cytosol
4. nucleus
5. mitochondria
which two places is aggregate generally found?
floodplains and alluvial fans
alluvial fans and mines
mines and beneath the topsoil
beneath the topsoil and above the topsoil
Answer: Floodplains and Alluvial Fans
Explanation: Took the quiz and got it right. Hope this helps!
Answer:person above is right
Explanation:
answer A
why is night blindness regarded as a non infectious disease
Answer:
Explanation:
stay away from the dark frfr sh1 creepy dog
Water is carried from the roots upward to every part of a vascular plant by
cells walls.
O cuticle.
phloem.
xylem
Use the concept map below to answer the following question.
Help me please!!!!!!!!!!!!!!!!!?
Answer:
points .,.
thx .,. Explanation:
Which statement describes earthquakes which team explain one way that minerals form
Earthquakes are natural phenomena characterized by the sudden release of energy in the Earth's crust, resulting in seismic waves that can cause the ground to shake.
During an earthquake, the rocks along the fault experience immense pressure and deformation.
This intense pressure can cause minerals within the rocks to undergo various processes that contribute to their formation.
One way minerals can form as a result of earthquakes is through metamorphism.
Metamorphism is the process by which existing minerals within rocks undergo changes in response to high temperatures, pressures, and deformation.
During an earthquake, the rocks near the fault zone are subjected to extreme pressure and temperature conditions.
The intense stress causes the minerals to recrystallize, rearrange their atomic structures, and form new minerals.
This process is known as dynamic metamorphism or cataclasis.
The newly formed minerals in fault zones can include varieties of quartz, feldspar, mica, and other minerals commonly found in metamorphic rocks.
The specific minerals that form depend on the composition of the original rocks and the conditions present during the earthquake.
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Mutations that change the bases in a base pair are ____________.
Answer:
A point mutation is when a single base pair is altered. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid.
Explanation:
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Question 10 of 10
Why do fungi need to live in moist areas?
A. Their large surface areas make them dry out easily.
B. They can only reproduce sexually.
C. They are unable to photosynthesize.
D. Their filaments make it difficult to absorb nutrients.
Answer:
A. Their large surface areas make them dry out easily.
Explanation:
(A.P.E.X)
In the year 2000, more than 225 million acres of forests were burned throughout the
world. A forest fire can have a dramatic effect on the plants and animals that live in a
forest.
• Describe one negative and one positive effect of a forest fire.
One way of controlling how severe a forest fire becomes is to deliberately set small
fires in what is known as a "controlled burn."
• Describe two ways that a controlled burn can benefit a forest.
Name the type of ecological succession that would occur after after a forest fire.
Answer:
In 1960, the U.S. Forest Service started keeping detailed records of damage caused by wildfires. ... Between 2000 and 2013, nearly 161 million acres were consumed by wildfires -- more in 13 years than in the previous 40 years, combined. ... they would have been had fuel sources been able to burn off naturally over time.
Missing: 225 | Must include: 225
Explanation:
What year did the first "Earth Day" occur?
Please help
Answer:
April 22, 1970 was the 1st earth day
Answer:
in spring 1970
Explanation:
because of this one person named Gaylord Nelson