Answer:
An ecosystem with only a few different types of organisms has a less complex food web than those with many different types because in a less complex food web, only a few organisms are needed to be presented, more nutrients are absorbed and less energy is needed to complete the food web.
the segment of the dna molecule where messenger rna synthesis begins is called the
Explain why it is not accurate to call a virus that kills bacteria a “bacteria eater."
Answer:
When viruses attack cells, they release genetic material that is coded to multiply, then the cells divide and more viruses are spread, the viruses do not eat.
Explanation:
fats store energy for
A. Long term.
B. Immediate use
C. muscle tissues only.
When fat digestion occurs in the small intestine, an emulsion is broken down to smaller ___________ with the action of pancreatic lipase and colipase. kine
How long is the interval between high tides in Boston?
Answer:
High tides occur 12 hours and 25 minutes apart.
Explanation:
The brain changes which contribute to addiction occur in parts of the brain called the;.
Answer:
basal ganglia, the extended amygdala, and the prefrontal cortex
Explanation:
Which of the following structures is part of the peripheral nervous system?
*Cranial and spinal nerves
Brain
Spinal cord
None of the above
Answer:
a. Cranial and spinal nerves
Explanation: is correct
Which of the following are examples of facilitated diffusion? Select all that apply.
A. Water diffusing across the cell membrane from an area of high concentration to low concentration.
B. A carrier protein 'that changes shape to allow the transport of molecules across the plasma membrane.
C. A gated channel that allows glucose, a very large molecule, to cross the cell membrane.
D. An ion channel that allows ions to diffuse across the cell membrane.
Answer:
(C) A gated channel that allows glucose, a very large molecule, to cross the cell membrane, and (D) An ion channel that allows ions to diffuse across the cell membrane, are both examples of facilitated diffusion.
I hope this helped at all.
How does a bacteriophage work.
Answer:
A bacteriophage attaches itself to a susceptible bacterium and infects the host cell. Following infection, the bacteriophage hijacks the bacterium's cellular machinery to prevent it from producing bacterial components and instead forces the cell to produce viral components.
What is the function of the following organelles?
Nucleus
Cell membrane
Plasma membrane
Mitochondria
Vacuole
Endoplasmic reticulum
Cell wall
Chloroplasts
Ribosomes
Cytoplasm
Are the following organelles found in plant cells, animal cells, or both?
Nucleus
Cell membrane
Plasma membrane
Mitochondria
Vacuole
Endoplasmic reticulum
Cell wall
Chloroplasts
Ribosomes
Cytoplasm
Answer:
Explanation:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information
The the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions.
The plasma membrane is the same as a cell membrane
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate
Vacuole. A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance.
The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.
The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.
In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.
A ribosome is a cellular particle made of RNA and protein that serves as the site for protein synthesis in the cell. The ribosome reads the sequence of the messenger RNA (mRNA) and, using the genetic code, translates the sequence of RNA bases into a sequence of amino acids.
The cytoplasm is the gel-like fluid inside the cell. It is the medium for chemical reaction. It provides a platform upon which other organelles can operate within the cell. All of the functions for cell expansion, growth and replication are carried out in the cytoplasm of a cell.
Chlorophyll a
a. absorbs mostly orange-red and
blue-violet light.
b. absorbs mostly green light.
c. is an accessory pigment.
d. is responsible for the red color of many
autumn leaves.
a. absorbs mostly orange red and blue violet light
Determine the product formed when compound b is treated with each reagent.
Answer:
okay
Explanation:
56
How does the physical environment in a tide pool change between tides?
which type of blood vessel drains blood from the glomerulus?
Answer:
the efferent arteriole
Explanation:
Blood is brought to the glomerulus by the afferent arteriole, and after the filtration process, the blood is carried away from the glomerulus by the efferent arteriole.
Describe how ions, water and sugar are obtained and transported
through plants. In your answer you should refer to materials moving upwards in a plant and to
materials moving downwards in a plant
Answer:
Explanation:
Water moves through the xylem in a stream called a transpiration stream, up to the leaves of the plant. Sugar is made during the process of photosynthesis. Unlike water and ions, it travels through the plant via the phloem, moving up and down through the plant.
How do atoms of different elements differ?
Answer:
The number of protons in an atom is the defining feature of an atom. It's what makes one element different from another. The number of protons in an atom is called its atomic number. ... All the elements in the universe are arranged according to their atomic number in the periodic table.
Hope this helps :)
which process is typical of cancer?
-Replacement Of Damaged Lungs
-DNA Replication
-Cellular Death
-Uncontrolled Cell Division
Answer:
Uncontrolled cell division
(and I think that HIV/AIDS Does the opposite; slows cell division)
Answer:
uncontrolled cell division
Explanation:
Cancer cells are cells gone wrong — in other words, they no longer respond to many of the signals that control cellular growth and death. Cancer cells originate within tissues and, as they grow and divide, they diverge ever further from normalcy. Over time, these cells become increasingly resistant to the controls that maintain normal tissue — and as a result, they divide more rapidly than their progenitors and become less dependent on signals from other cells. Cancer cells even evade programmed cell death, despite the fact that their multiple abnormalities would normally make them prime targets for apoptosis. In the late stages of cancer, cells break through normal tissue boundaries and metastasize (spread) to new sites in the body.
how can the h. pylori bacteria survive in the human stomach?
Answer:
To survive in the harsh, acidic environment of the stomach, H. pylori secretes an enzyme called urease, which converts the chemical urea to ammonia. The production of ammonia around H. pylori neutralizes the acidity of the stomach, making it more hospitable for the bacterium
Explanation:
For what percentage of the earth existance have hominids exsisted?
Answer:It took 13.8 billion years of cosmic history for the first human beings to arise, and we did so relatively recently: just 300,000 years ago. 99.998% of the time that passed since the Big Bang had no human beings at all; our entire species has only existed for the most recent 0.002% of the Universe
Explanation:
How was Dr. Martin Luther King , Jr. , an important force in creating a more just world ?
Evidence and reasoning plz
Martin Luther King, Jr. worked hard to bring greater equality to America and ensure civil rights for all people, regardless of race.
many protists can move. what are some structures mentioned that can help protists move.
Answer:
cilli and flagella
Explanation:
I think there is one more but not sure hope this helped
(also if spelling is weird sorry I tried)
What is a food chain.
are environmental factors more likely to affect genotype or phenotype?
Environmental factors are more likely to affect phenotype than genotype.
Phenotype refers to the observable physical characteristics of an organism, a product of the genetic information contained in the genotype, in accordance with the conditions of the determined environment in which the organism lives.
The phenotype supposes the manifestation of the genotype based on the environmental factors, the traits expressed by the phenotype are behavioral and physical.Regardless of the genotypic information manifested, environmental factors will also shape the phenotype of an organism, since it can suffer accidents, changes or adaptations that a genetically similar individual but in another environment would not suffer.Therefore, we can conclude that the phenotype is the variable expression of a genotype in accordance with the environmental factors.
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Which option(s) correctly describes chromosomes?
Chromosomes consist of tightly coiled DNA wrapped around proteins called histones
Each chromosome has one gene
Chromosome pairs contain completely different genes
Most human cells have two copies of each chromosome - one from each parent.
Answer:In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.
Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.” The short arm of the chromosome is labeled the “p arm.” The long arm of the chromosome is labeled the “q arm.” The location of the centromere on each chromosome gives the chromosome its characteristic shape, and can be used to help describe the location of specific genes.
What are the two arms of chromosome called?
a. Centromere
b. Chromatid
c. Nucleotides
d. Histones
Analyses of the protein ______ can be used to study evolutionary relationships among species because most organisms produce this protein for the electron transport chain in mitochondria.
Evolutionary relationships among species can be studied when similar structures or materials eg the wings of a bat and the arm of a bird or similar proteins between two different species. This proves to show relationship among organisms.
Analyses of the protein Cytochrome C can be used to study this types of evolutionary relationships.
Cytochrome C is an antioxidative enzyme that is a part of the electron transport chain in mitochondria. Mitochondrion is an organelle that majority of living organisms share in common. This protein is therefore found present in almost all organism carrying out cell respiration. Therefore this protein can be used to analyze and study evolutionary relationship among organisms with this protein.Learn more: https://brainly.com/question/22173470
What is a rock? What are the main components of a rock
please say
Answer: A rock is a naturally occurring solid mass made of either one mineral or a variety of. Minerals are the main components.
Explanation:
What amino acids is represented by the codon UUA?
Answer:
Leucine
Explanation:
Leucine amino acid is represented by the codon UUA. One codon codes for only one amino acid.
What are amino acids?Proteins are made up of substances called amino acids. Proteins and amino acids are the components of life. Amino acids are the byproducts of the digestion or breakdown of proteins. Amino acids are used by the human body to create proteins that aid in breaking down food.
There are 20 amino acids, of which 10 amino acids are essential and 10 are non-essential amino acids.
Codons made from three nitrogenous bases codes for amino acids. One amino acid can be coded by more than one codon, while one codon can code only one amino acid. For example, UUA codes only for leucine, but leucine can be coded by UUA, UUG, CUA, CUC, CUG, and CUU.
Learn more about amino acids, here:
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In the space below label the part of the flower. Identify if it is male, female or neither.
Anther:
Filament:
Ovary:
Petal:
Pistil:
Stamen:
Stem:
Stigma:
Style:
Answer:
Anther: Male
Filament: Male
Ovary: Female
Petal: Neither
Pistil: female
Stamen:male
Stem: Neither
Stigma: Female
Style: Female
Explanation:
Hopes this help you
Thyme, basil, dill, marjoram, and chives harvested directly from a kitchen garden are examples of what kind of classic cold kitchen ingredients
A classic cold kitchen is a type of kitchen that indulges in cooking with no heat. So classic cold kitchen ingredients are therefore ingredients that do not require cooking with heat.
Thyme, basil, dill, marjoram, and chives are cold kitchen ingredients harvested directly from a kitchen garden are called fresh herbs.
Thyme, basil, dill, marjoram, and chives are some fresh herbs ingredients that would not require heat in cooking and are added to add flavor to foods.
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