Only a fraction of the genes in a cell are expressed at any one time. The variety of gene expression profiles characteristic of different cell types arise because these cells have distinct sets of transcription regulators
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Which group makes up the largest level of an energy pyramid?
A. omnivores
B. carnivores
c. producers
D.consumers
Answer: A
Explanation:
What composes a photosystem?
The "special chlorophyll" molecules in the reaction center are what the photosystem will use to absorb all of the sun's energy.
What is a photosystem?A core complex and a periphery antenna system referred to as the light-harvesting complex I (LHCI) for PSI and the light-harvesting complex II (LHCII) for PSII, respectively, make up each photosystem.
Light-harvesting structures and reaction hubs make up photosystems. To two unique chlorophyll molecules in the reaction center, pigments in the light-harvesting complex transfer light energy.
Sunlight is captured in the chloroplast by pigment chlorophyll molecules arranged into photosystems.
Therefore, the light-harvesting complex, which consists of pigments, and the reaction center make up the photosystem.
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The structure below is used in agriculture. What could be a benefit of this
technology?
A. It can be used to grow food in areas with a shortage of land.
B. It can create food using more land than a traditional farm.
C. It can be used to grow food without sunlight.
D. It can create unemployment problems in the farming industry.
Answer:
A. It can be used to grow food in areas with a shortage of land.
Explanation:
Answer:
A
Explanation:
Which type of seed do you think the ground finches preferred? Why do you think this?
Answer: soft seeds
Explanation:
Tiny, soft seeds that are easy to crush are preferred by the medium ground finch to feed. During droughts, however, they often consume the larger seeds on the island when small seeds are not as available.
Can someone help me asappp
Answer:
im 90% sure its D
Explanation:
well
Which structures are responsible for mechanical breakdown of food
Why does ice become less dense than water?
Which of these chemicals is not a pollutant?
A. Nitrogen gas
B. Nitrate
C. Methane
D. Carbon dioxide
having a hard time
Answer:
Carbon dioxide
Which two elements are always found in amino acids?
Answer:
carbon and oxygen
Explanation:
hope this helps :)
please answer the question in the picture 40 points
Answer:
A & B.
Explanation:
enzymes are molecules that speed up the chemical reactions, but they don’t interfere in the free energy of a reaction.
The Krebs cycle, fermentation, electron transport, and the breakdown of starch are
processes of respiration. Which process could take place within an airtight bottle that
contained no oxygen?
A.aerobic respiration
B. Krebs cycle
C. fermentation
D. electron transport
Help!!!
What are the tools and technology used to carry out PCR tests ????
Answer:
Equipment: Thermal cycler is a technology that can change the temperature of the DNA segment. A thermal cycler can raise and reduce the temperature quickly. This allows the PCR process to happen over and over again.
Tools:
Taq polymerase build complementary DNA strands
DNA primers attach to each end of the target sequence
DNA nucleotides or dNTPs make up the DNA
Explanation:
what is the purpose of ATP
Answer:
Adenosine triphosphate (ATP), energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes.
Explanation:
Mark me BRAINLIEST please!
There are only three autosomal trisomic conditions (Patau, Edward, and Down Syndrome) where a fetus will survive to birth. Why do you think this is so?
Answer:
An autosomal trisomic condition is the deviation of the chromosome number where an extra copy of the chromosome present with the chromosome pair. The three trisomic conditions are Patau - extra copy at chromosome 13, Edward - extra copy of chromosome 18, and Down Syndrome - an extra copy of chromosome 21
Children or fetuses affected by these trisomies show the least life expectancy and develop as mentally week, other than these trisomies other trisomic conditions are highly lethal so we do not see the survivors and it is due to dosage sensitivity which means that increasing or decreasing their expression levels will reduce cell viability.
The electrons of an atom
Select one:
a. have a positive charge.
b. are attracted to the positive charge of neutrons.
c. orbit the nucleus in various energy levels.
d. are found in the nucleus along with the protons.
Answer:
tbh im not goin say this easy answer to u bc thats 5th grade work fr
Explanation:
Answer:
b
Explanation:
i kinda think is that because of my class
DNA and RNA are both types of —
A. enzymes
B. polysaccharides
C. proteins
D. nucleic acids
Which of these characteristics is NOT a property of water? (SC.912.L.18.12) A. Increases density as it solidifies B. Functions as a universal solvent C. Exhibits a highly cohesive behavior D. Moderates changes in temperature
Answer:
Option A.
Increases density as it solidifies
Explanation:
Increases density as it solidifies is not the characteristics of water because when water solidifies or freeze it become less dense or lighter compare to liquid water. When water solidifies to ice, it molecules are packed together and it is arranged in six sided crystalline shape which make it to be less dense or lighter than the liquid water molecules which is denser or more heavier.
Which type of fossils is MOST helpfu
in understanding what the climate w
like for a region in the past?
A.fossils of plants
B. fossils of microorganisms
C. fossils of birds
D. fossils of animals
Answer:
I would say A). The animals in an area can fluctuate and diversify, while plants can't move and will die if conditions are too intense, leaving only the ones accustomed to the climate to survive.
What best describes the role of molecular oxygen (O2) in aerobic respiration?
A. It accepts electrons when reacting to form water.
B. It combines with carbon and hydrogen to form glucose.
C. It is released when glucose breaks apart.
D. It reacts to form carbon dioxide and water.
Aerobic respiration involves the reaction of oxidation which involves the acceptance of electrons when the molecular oxygen reacts with protons to form water molecules. Thus, the correct option is A.
What is Aerobic respiration?
Aerobic respiration is the chemical process in which molecular oxygen is used to make the energy in the form of ATP from carbohydrates. It is also called as aerobic metabolism, and oxidative metabolism.
Aerobic organisms can use molecular oxygen (O₂) to generate energy in the form of adenine triphosphate (ATP). The role of molecular oxygen in the process of cellular respiration is to act as the end acceptor of electron. As the electrons are dropped off at the inner mitochondrial membrane during the process of cellular respiration, they travel through the electron transport chain and are finally accepted by the molecular oxygen to form water.
Therefore, the correct option is A.
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hurry plz due in five min
Answer:
Its B the 2nd option
Explanation:
.......
30 POINTS!! HELP ME PLZZ I NEED HELP WITH THIS!!
Answer:
c
Explanation:
“every cell stems from another cell”
He observed how cell division produced two daughter cells hence all living cells come from pre-existing.
Open Response 2 part A: Plant cells and fungal cells have many of the
same types of organelles. Structures X and Y are found in both plant cells
and fungal cells. Structure Z is found in plant cells, but not in fungal cells. A
- What is party?
X
Z
What types of solid waste do you produce in your home ?what could be done to each type and what goes to the disposal site or dumpsite
Answer:
Types of solid watse we produce in your home is plastic cups, metal forks and spoons, and also glass plates. We could recycle these items, so they can become other new items when we are finished.
Solid waste are described as abandoned waste materials resulting from human and chemical activities. Solid wastes could include used plastic materials, rubber, metals, glass and other materials classed as useless.
In Homes, solid wastes usually include used plastic, shattered glass, metal objects and so on. Plastic wastes and metals could be recycled and refined to make rubber and aluminium spare parts, hence, serving as raw materials.Therefore, since solid materials take very long to Decay, hence recycling of the waste and their use in organic products are always good means of disposal.
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What happens when electrons inside an
atom get excited“?
A. They stay in their current energy
level
B. They jump down an energy level
and absorb energy in the process
C. They jump up an energy level and
release energy in the process
Answer:
C. they jump up an energy level and release energy in the process
Explanation:
when electrons are excited, the move up a shell to share or give electrons
What is the longest living animal?
The Asian elephant lives the longest...
Other animals live a very long time, too.
Tell me if you need the other animal names, and I will be happy to help.
God Bless
Check Concepts
41. Using the scientific definition, which state-
ment is always true of work?
A) It is difficult.
B) It involves levers.
C) It involves a transfer of energy.
D) It is done with a machine.
Answer: C. It involves a transfer of energy.
Using the scientific definition, the statement that is always true of work is it involves a transfer of energy. The correct option is C.
What scientific theories?Scientific theories are the theories that are given by scientific facts and information. These theories are based on observation of natural things and places.
There is the transfer of energy in the natural world. Every organism and plant is connected with each other in the form of a transfer of energy. This is called a food chain.
In the food chain, the organism is divided into different levels. These levels are based on their food. They are autotrophs, heterotrophs, and decomposers. Autotrophs have the largest amount of energy.
Thus, the correct option is C) It involves a transfer of energy.
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A student conducted a comparative investigation to test the hypothesis that different areas of New York City have different levels of air pollution. Which is a likely benefit of this comparative investigation?
A It provides her with a large amount of information about air pollution in New York City.
B It provides her with results that are valid for a long time.
C It requires that she observe a limited number of variables.
D It allows her to learn about the causes and effects of air pollution in major cities.
Answer: A. It provides her with a large amount of information about air pollution in New York City.
Explanation:
A comparative investigation is when data is collected in order to make a particular comparison.
With regards to the question, the student conducted a comparative investigation in order to test the hypothesis that different areas of New York City have different levels of air pollution.
The benefit of this study done by the students is that it will provide her with a large amount of information about air pollution in New York City. The area with the highest air pollution, what causes air pollution and other necessary information can be gotten.
Therefore, the option is A.
Graves’ Disease is an autoimmune disorder that causes an overproduction of the hormone produced in the thyroid. These hormones are responsible for cellular metabolism. What would this disorder probably result in?
Answer:
Explanation:
Graves' disease is an autoimmune disorder in which antibodies produced by your immune system stimulate your thyroid to produce too much T4. It's the most common cause of hyperthyroidism. Hyperfunctioning thyroid nodules (toxic adenoma, toxic multinodular goiter or Plummer's disease).
Which statement illustrates bias in scientific research?
A zoologist publishes incomplete data on sloths which supports their original hypothesis and notes that more research is required.
A botanist publishes data about plant growth that does not support their original hypothesis and is replicable.
An ecologist publishes data funded by a construction company which supports their original hypothesis that an endangered animal's territory is not endangered.
A microbiologist publishes data funded by the National Institutes of Health that does not support their original hypothesis.
When the accused enters into plea bargaining, the judge and prosecutor do not have to hold a trial. True or False
Answer:
True
Explanation:
Answer:
False
Explanation:
Put true on edge got it wrong its false