Answer:
Which of the following examples shows the influence coal has had on human activity? Coal use in steam engines led to easier access to goods. Coal use in steam engines allowed people to travel on planes. Coal use in steam engines led to the discovery of natural gas wells.
Explanation:
WILL GIVE BRAINLIEST!!!!!!
An amino acid is to a polypeptide as:
glycogen is to glucose.
testosterone is to a steroid hormone.
a phospholipid is to a plasma membrane.
a nucleotide is to a nucleic acid.
Answer:
I think it's D I could be wrong but that's what I'm thinking
Answer:
The correct answer in Option B.
The analogy pertains to the building blocks or monomers of biomolecules, with the monomer preceding the polymer....
plz mark brainliest
Which of the following statements is subjective?
A. Van Gogh painted beautiful works of art.
B. Einstein was a scientist.
C. The planets revolve around the sun.
D. Blue is a color.
The answer is
ACT GCA TTA- what is the complementary DNA strand?
Which phrase correctly defines net production efficiency? The amount of energy–
A. captured from sunlight
B. available to decomposers
C. stored in roots
D. available to make new tissue tissue
The statement that describes net production efficiency from the question is The amount of energy ;A. captured from sunlight
Net production efficiency can be regarded as measure that explains the way each trophic level make use of energy and also incorporate it from their food into biomass so that another level of trophic can be fueled.Option A, which State that the energy captured from the sun is correct because it serves as the efficient and principal energy for all trophic level.
Therefore, option A is correct.
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As human travel increases, the number of introduced species likely,
A) Decreases
B) Increases
C) Stay the same
D) Is eliminated
Answer:
B), increases
Explanation:
because as human travels the More they introduce new specis
The law of___________explains how traits are inherited through generations.
ANSWER CHOICES: Alleles,dominance,Generations,and codominance
Answer:
alleles
Explanation:
alleles have genetic info in them
The image of a slide of onion epithelial tissue observed with the low-power objective of a
compound microscope appears light and somewhat fuzzy. Which parts of the microscope should be used to improve the focus?
coarse adjustment and ocular
fine adjustment and diaphragm
ocular and nosepiece
diaphragm and 40x objective
Od
Answer:
Fine adjustment and diaphragm
Explanation:
Predict: Based on your hypothesis, how will the mushroom population change when other organisms are added to the forest? (Trees,Bears,Deer)
Answer:
The mushroom population will decrease.
Explanation:
The animals introduced into the forest will likely eat the mushrooms.
Explain the relationship between crossing over
and genetic variation.
cholesterol is synthesized by all animal cells and is an essential structural component of animal cell's membrane cholesterol is the most common steroid and mainly synthesized in the liver cholesterol also serves as a processor for several important biological compounds including all except insulin ,vitamin D, bile salts , testosterone.
Answer:
Aug 11, 2017 — Vitamin D3 is produced in the skin from 7-dehydrocholesterol by UV irradiation, 1,25(OH)2D reduces 1,25(OH)2D levels in cells primarily by Animals null for calbindin 9k (the major calbindin in mammalian abnormal vitamin D and/or calcium metabolism in some but not all of these patients (24-26). Cholesterol, a waxy substance that is present in blood plasma and in all animal tissues. it is a primary component of the membrane that surrounds each cell, and it is synthesizes bile acids, steroid hormones, and vitamin D. Cholesterol are essential energy sources and structural components of all life
Please help me with this work sheet
Besides reducing biodiversity what are the characteristics of an ecosystem that might change if the conditions of the ecosystem change? Size Genetic Variation Density Distribution
Answer:
population
Explanation:
The stomach is a relatively small muscular organ compared to the small intestine that can be a long as six meters
Can y'all help me? I am not good at science lol.
Earthquake
Epicenter
Fault
Deformation
Elastic Rebound
Focus
Producers, consumers, and decomposers all participate in the carbon cycle during
their lifetimes. Identify and explain the process through which producers remove
carbon from the atmosphere. Identify and explain how producers, consumers, and
decomposers return carbon to the atmosphere.
Answer:
Carbon Cycle
Everything You'll Have Covered
What role do producers, consumers, and decomposers play in the carbon cycle?
~ Producers synthesize their food through photosynthesis using energy from sunlight and carbon dioxide from the air. Their respiration returns carbon dioxide to the atmosphere. Consumers use the food produced by producers for energy. Their respiration also returns carbon dioxide to the atmosphere. Decomposers break down plant and animal waste products. They also break down dead plants and animals. The decomposing process releases carbon dioxide gas into the atmosphere.
How do fossil fuels and volcanic activities contribute to the carbon cycle?
~ When fossil fuels are burned, carbon dioxide is released into the atmosphere in the form of gas. When volcanoes erupt, carbon dioxide that was in the magma passes into the atmosphere as carbon dioxide gas.
How is carbon returned to the Earth and sea in the carbon cycle?
~ Carbon is returned to the Earth and sea in the form of precipitation after carbon dioxide mixes with rain and snow. Erosion is another way that carbon is returned to the sea. When shellfish die, the carbon that was in their shells collects at the bottom of the ocean and eventually forms sedimentary rocks.
Give one example of a human activity�that could disrupt the�carbon�cycle�as well as the consequences of this disruption.
~ Burning fossil fuels can disrupt the carbon cycle, since they increase carbon dioxide in the air, which can lead to environmental problems such as acid rain.
Photosynthesis is the process by which plants produce their food in the presence of sunlight that is solar energy with the use of carbon dioxide and water. The breakdown is the mechanism by which plants give their carbon dioxide back.
What is end product of photosynthesis ?The end products of photosynthesis are glucose and oxygen that is given back to the atmosphere.
In plants, photosynthesis is the process by which plants prepare their food in the presence of sunlight and glucose is made thus this is the way by which plants are preparing their food and in the case of plants glucose is stored in the form of starch.
With the reactions going on when the cellular respiration reactions are going on at that time the reactions produce enough of carbon dioxide which is given back to the atmosphere thus this dependency helps to interpret the mutual relationship.
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As the fruit develops, why do the petals, stamen, and sepals fall off?
A. The fruit absorbs them, which gives the fruit its color.
B. They have served their purpose and are no longer needed by the plant.
C. The material in the petals, stamen, and sepals become the skin of the fruit.
D. The flower has become dehydrated.
Answer:
A. The fruit absorb them, which gives the fruit its color
Explanation:
basta yunn
Which of the numbered labels is pointing to an energy producing organelle in the diagram?
A. 2
B. 9 and 10
C. 3
D. 6
Answer: 3
Explanation:
because it’s the mitochondria
Answer:
The answer is c
Explanation:
the answer is c because the thing that is labeled three is the mitochondria
What is the estrus synchronization?
This picture shows a phospholipid bylayer. What crucial function do the nonpolar tails of the phospholipids have?
A) keep water-soluble substances from passing easily into the cell
B) help encode genetic material
C) allow water-soluble substances to pass easily into the cell
D) speed chemical reactions with enzymes
Answer:
It is B
Explanation:
I had this question on my test last week.
What do you think we would see if we looked at that same portion of the sky with an even more powerful telescope that is in space?
where do convection currents occur.
A. in areas with the same temperature.
B. in areas with the same altitude.
C. in areas with different air pressures
D. in areas with different cloud types.
Answer:
the answer is C-in areas with different air pressures
Explanation:
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated.
Answer:C. in areas with different air pressures
Explanation:
Angiosperms are the most common plant that you see every day. Describe what characteristics make them so successful.
Answer:
1. they are the most complex green flowering plants
2. they are vascular plants
3. they have well developed and complete flower
4. they are mainly terrestrial plants
5. they are seed plants with seed enclosed in the fruit
Explanation:
hope this helps
What do these panels do?
Which letter marks the location where carbon dioxide is
produced during respiration?
OW
ОХ
Ο Υ
Ο Ζ
Letter X represents the Mitochondria which marks the location where carbon dioxide is produced during respiration. So, the correct option is B.
What is Mitochondria?A mitochondrion is defined as an organelle which is found in the cells of most eukaryotes, such as animals, plants, and fungi that have a double membrane structure. It uses aerobic respiration to generate adenosine triphosphate, which is used throughout the cell as a source of chemical energy.
The main role of mitochondria is oxidative phosphorylation which utilizes the energy released during the oxidation of the food we eat to generate ATP which is used as the primary energy source for most biochemical and physiological processes such as growth, movement and homeostasis.
So, the correct option is B.
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Choose all the answers that apply.
Oxygen is _____.
1 released into the air by the lungs
2 pumped to cells by ventricles
3 picked up in the alveoli
4 transported by blood
Answer:
its 2 3 4
Explanation:
Spongy tissue is best described as dense smooth and homogenous
True or false
Please help me
Which particle, protons, neutrons, or electrons, has the LEAST mass?
Answer:
Electrons are much smaller in mass
Explanation:
Although similar in mass, protons are positively charged, while neutrons have no charge. Therefore, the number of neutrons in an atom contributes significantly to its mass, but not to its charge. Electrons are much smaller in mass than protons, weighing only 9.11 × 10−28 grams, or about 1/1800 of an atomic mass unit.
Why is DNA in the world?
Answer: Nine years ago I jumped at an opportunity to join the international team that was identifying the sequence of DNA bases, or “letters,” in the genome of the common chimpanzee (Pan troglodytes). As a biostatistician with a long-standing interest in human origins, I was eager to line up the human DNA sequence next to that of our closest living relative and take stock. A humbling truth emerged: our DNA blueprints are nearly 99 percent identical to theirs. That is, of the three billion letters that make up the human genome, only 15 million of them—less than 1 percent—have changed in the six million years or so since the human and chimp lineages diverged.
Evolutionary theory holds that the vast majority of these changes had little or no effect on our biology. But somewhere among those roughly 15 million bases lay the differences that made us human. I was determined to find them. Since then, I and others have made tantalizing progress in identifying a number of DNA sequences that set us apart from chimps.
An Early Surprise
La miopia es un caracter bastante comun en la especie humana. Un matrimonio en el que ambos conyugues poseen vision normal, tienen dos hijos, uni con una vision normal y el otro con miopia. Teniendi en cuenta el fenotipo de todos los miembros de la familia ¿quenpodrias deducir del gen que controla la miopia? ¿ que genotipo podrias asignsr a cada individuo?
Answer:
El gen que controla la miopia es dialelico, autosómicoEl alelo dominante M expresa visión normal, El alelo recesivo m expresa miopia, Los padres con visión normal serían heterocigotas, Mm.Tendrían un hijo con visión normal homocigota dominante MM o Heterocigota Mm Tendrían otro hijo homocigota recesivo con miopia, mm.Explanation:
Datos disponibles:
Ambos padres poseen visión normalUno de los hijos tiene visión normalEl otro hijo tiene miopiaPodríamos establecer que M es el alelo dominante, mientras que m es el alelo recesivo.
A partir de la información brindada, podríamos suponer que:
Opción 1:
La miopia es un caracter expresado por un gen dominante. Si este fuera el caso, entonces al menos uno de los padres debería tener miopia para poder heredarle al hijo el alelo dominante para expresar el caracter. Si este fuera el caso, los posibles genotipos de los padres serían:
Parental) Mm x mm (al menos uno de los padres con miopia)
F1) 1/2 Mm (Hijo miope)
1/2 mm (Hijo con visión normal)
Pero en este caso, los dos padres tienen visión normal, entonces si el gen dominante expresa la miopia, los genotipos de los padres serian homocigotas recesivos, mm. Si ambos padres son homocigotas recesivos, no podrían heredarle a ningun hijo el alelo de la miopia. En este caso, la cruza sería:
Parental) mm x mm
F1) 100% mm (todos los hijos con visión normal)
Sin embargo, para el ejemplo planteado, los dos padres tienen visión normal, uno de los hijos tiene visión normal y el otro tiene miopia, lo que nos conduce a la segunda opción.
Opción 2:
La miopia es un caracter heredado por un gen recesivo, m. Mientras que la visión normal es heredada por un gen dominante, M. Entonces, si este fuera el caso, para que ambos padres con visión normal, tengan un hijo homocigota recesivo para el caracter, entonces ambos padres deberian ser heterocigotos. Su hijo miope heredaría un alelo recesivo de cada padre y expresaría el defecto. El genotipo de las personas con miopía sería entonces homocigota recesivo. Esta cruza sería de la siguiente manera:
Parental) Mm x Mm (Ambos padres heterocigotas)
Gametos) M m M m
Cuadro de Punnet)
M m
M MM Mm
m Mm mm
F1) 3/4 o 75% de probabilidad de tener un hijo con visión normal
1/4 o 25% de probabilidades de tener un hijo miope.
Entonces, podemos concluir que:
El gen que controla la miopia es dialelico, autosómicoEl alelo dominante M expresa visión normal, El alelo recesivo m expresa miopia, Los padres con visión normal serían heterocigotas, Mm.Tendrían un hijo con visión normal homocigota dominante MM o Heterocigota Mm Tendrían otro hijo homocigota recesivo con miopia, mm.Claim: Which type of reproduction is more beneficial to a species
Asexual
Sexual
Answer: Asexual
Explanation: Since only one parent is needed, asexual reproduction is more beneficial. It is a "simpler" (in terms of not needing two mates to fornicate) and causes species to reproduce at a faster rate