Answer:
To hit nails into wooden boards or walls.
¿Qué tipo de célula apareció primero en la Tierra?:___, y se presentan en seres vivos como las:___ y se caracterizan porque:___. *
Answer:
Célula procariota y procariotas.
Explicación:
La célula procariota es un tipo de célula que apareció por primera vez en la Tierra hace unos mil millones de años. Estos tipos de células están presentes en los procariotas, lo que significa que estos organismos no tienen un núcleo verdadero o una membrana nuclear alrededor del núcleo y otros orgánulos de la célula. El ADN del organismo procariótico se encuentra en una parte central de la célula que se conoce como nucleoide. La pared celular de un procariota actúa como una capa adicional de protección, ayuda a mantener la forma y estructura celular y previene la deshidratación.
what are the difference between blood in the renal artery and blood in the urethra
Answer:
Renal Veins carry filtered blood from the kidneys to the posterior vena cava. Renal Arteries carry unfiltered blood from the aorta to the kidneys. The arteries are obscured by the renal veins in this image; they are dorsal to the renal veins.
Photosynthesis is a process that
A.green plants use to produce food.
B.animals use to breathe.
C.predators use to catch their prey.
D.illustrates symbiosis.
Answer:a
Explanation:
a
Answer:
A: Green plants use to produce food
Explanation:
Choice a is the correct answer.
You discover a new protist species. It has chloroplasts and vacuoles and moves using a flagellum. How would you classify the way that it gets energy? Is it an autotroph, heterotroph, or both? Explain your answer
Answer:
Autotroph. Autotrophs include plants and some other creatures, vacuoles and chloroplasts are found in plants.
Explanation:
PLANTS! = Autotroph. I don´t even know anymore, it´s been 3 years since I took a basic science class, I am guessing from memory.
Which type of selection occurs when a population experiences a shift in diversity toward the larger organisms?
stabilizing selection
directional selection
disruptive selection
adaptive selection
Answer:
Directional selection
Explanation:
When a population experiences a shift in diversity toward the larger organisms, it is directional selection.
What is directional selection?The term directional selection has to do with a type of selection in which the specie tend towards one side of the population mean.
Therefore, when a population experiences a shift in diversity toward the larger organisms, it is directional selection.
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1. What part of the body covers the windpipe when you swallow? diaphragm O bronchi O tongue O epiglottis
Answer:
diaphram or Bronchi
Explanation:
Answer:
epiglottis
Explanation:
I took the test
What is a nucleotide? What is an amino acid? What is a simple sugar (glucose)? What do these three share in common?
Answer: The three mentioned substances (nucleotide, amino acid and glucose) are the BASIC UNITS of its various biological macromolecules.
Explanation:
NUCLEOTIDE is defined as the BASIC UNIT or the building block of nucleic acid such as Deoxyribonucleic (DNA) and Ribonucleic (RNA). It contains a sugar molecule, a phosphate group and a nitrogen containing base. They have a variety of functions which include:
--> they are the building blocks of substance that control hereditary characteristics.
--> energy carriers,
--> components of enzyme cofactors, and
--> chemical messengers.
AMINO ACID: This is defined as the BASIC UNIT that makes up the biological macromolecule known as PROTEIN which helps in the growth and repair of worn out tissues of the body.
It is made up of basic amino group, an acidic carboxyl group, and a unique organic side chain.
GLUCOSE: This is also the BASIC UNIT of the biological macromolecule called carbohydrates. They are also called simple sugars which are the body's preferred source of energy in the form of carbohydrates.
When you breathe in oxygen, what happens? How does oxygen get to the tissues of your body? (USE YOUR OWN WORDS)
Answer:
When you breathe in oxygen, your diaphragm pushes against itself and pulls downwards. The muscles between the ribs pull upwards. The oxygen gets into the tissues by being helped by red blood cells and has a pigment that collects four oxygen molecules. It forms into a thing known as oxyhaemoglobin and the molecules are taken to other singular cells in the body tissue, releasing its contents.
what are 3 things that plant cells and animal cells have in common?
Answer:
Nucleus, Mitochondria and ribosomes
Explanation:
during which phase of meiosis does crossing over of chromosomes occur
Answer:
prophase 1 and metaphase
Explanation:
:)
Which of the following statements is false?
a. Performing a cross to produce an F1 generation can be used to show if an allele is dominant.
b. The F1 generation is always hybrids.
c. An F1 cross produces an F2 generation.
d. All of the offspring of a cross may exhibit the same trait.
Answer:
d
Explanation:
cannot be same if they produce f2 will take time to be the same!
Thank you!
The correct answer is d. All of the offspring of a cross may exhibit the same trait as it is only in purebred.
The phenomenon of dominant phenotypes springing up from the allele interactions exhibited on this go is called the precept of uniformity, which states that every one of the offspring from ago in which the mother and father fluctuate through best one trait will seem identical.
What are Inherited traits?Inherited traits tendencies encompass matters along with hair color, eye color, muscle structure, bone structure, or even functions just like the form of a nose. Inheritable tendencies are tendencies that get exceeded down from era to the subsequent era. This would possibly encompass such things as passing pink hair down in a family.
Thus it is clear that All of the offspring of a cross may exhibit the same trait is false.
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Label the following topographic map. Click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (Increments for contour lines is 50 feet).
Choices:
River Flow East
Depression
2650 feet
Sleep Area
Based on the information, it can be inferred that the concepts are organized from left to right as follows: Depression, Sleep area, River Flow East, and 2650 feet.
How to identify the correct space for each concept?To locate each concept in the correct space we must know how to read a topographic map. In this case, the depression would be the first concept because in the shaded area the contour lines are shown very close, this is generally related to a depression area in which the slope is very pronounced.
On the other hand, the sleeping area is at the top of the mountain at the bottom of the image because a flat region is shown on the top of the mountain.
Additionally, the blue line through the topographic map represents a river so this could be labeled River Flow East. Finally, the contour line that is at 2650 feet high would be the last space considering that each line represents an increase (or decrease) of 50 feet.
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answer plssssss i’m stuck
Answer:
i cant see it
Explanation:
what if you have an 66% in a class and you fail your final exam that is 15 % of your grade, then what percentage would you have after your final exam?
is this wrong?
[extra characters]
Answer:e takes place alveoli in the lungs and the capillaries that envelop them
Explanation:
Answer:
yes, your answer is right i guess. It looks right to me
what is a sustainable resource?
The correct answer is D. An unmanaged resource that is limitless.
Explanation
Sustainable resources are those natural resources that can be used today without compromising the resources and possibilities of future generations. Sustainable resources are characterized for being limitless and not being produced by humans, that is, generated by nature, for example, solar energy, wind energy, hydraulic energy (from water), among others. Unlike non-renewable resources are those that have a limit, such as water, oil, natural gas, among others. Therefore, the correct answer is D. An unmanaged resource that is limitless.
RM.03H]Oil is an important source of energy which sustains modern human lifestyle. Roads, pipelines, mines and other structures must be built when drilling for oil. Which of these is the most likely effect of large scale infrastructural development associated with oil drilling in a location?
lack of oxygen gas
long periods of drought
disruption of animal habitats
decrease in atmospheric temperature
Answer: C
Explanation: Disruption of animal habitats
Distinguish between gaseous exchange and respiration
Answer:
Respiration is the process in which food is oxidized to release energy. Complex organic compounds are converted into simpler ones, e.g glucose into CO2 water and energy released. Gaseous exchange is the diffusion of gases from a region of higher concentration to a region of lower one.
Explanation:
Breathing is the physical process by which air is passed on a gaseous exchange surface i.e. ventilation of the gaseous exchange surface. It involves Inhalation and Exhalation.
Gas/Gaseous exchange is the process whereby gasses diffuse across a gaseous exchange surface. In humans, oxygen diffuses from the inhaled air into the blood and carbon dioxide diffuses from the blood into the exhaled air. The gaseous exchange surface here being the Alveoli.
Respiration is the metabolic process whereby organic molecules are broken down to release energy in the cells. In humans, this process takes place inside the mitochondria of cells. Aerobic respiration requires oxygen whereas qnqerobic respiration takes place in absence of oxygen.
will chipmunks come out of their hole after u drop a corn into it
Answer:
We're no strangers to love
You know the rules and so do I
A full commitment's what I'm thinking of
You wouldn't get this from any other guy
I just wanna tell you how I'm feeling
Gotta make you understand
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you
Explanation:
Answer:
probably not since they're not around humans a lot.
They actually avoid them. But test it out and see your outcome.
Explanation:
What type of transport was shown in the second animation?
A. active transport with the help of transport proteins
B. passive transport by simple diffusion across the membrane
C. passive transport by facilitated diffusion with the help of transport proteins
Answer:
C. passive transport by facilitated diffusion with the help of transport proteins
Explanation:
The electron transport chain (shown in the second animation) establishes a proton gradient across the inner mitochondrial membrane. ATP synthase uses the energy stored in the proton gradient to catalyze the synthesis of ATP. The molecular machinery involved in this process converts chemical energy to mechanical energy and provides a great example of the relationship between the structure and function of macromolecules.
Answer:
C. passive by facilitated diffusion with the help of transport proteins
Explanation:
Passive transport is a type of membrane transport that does not require energy to move substances across cell membranes.
Part E
Explain your justification for the changes in trait distribution between years 1 and 10. What do you think will happen to the population by year 15?
Answer:
It will continue to rise.
Explanation:
Genetic variation results in the changes in trait over the period of time. Hence, traits do change over the years, but it is a gradual process. The population will become more stable due to successful traits.
What is genetic variation?Genetic variation refers to the changes in the genotype of an individual. It imparts stability to the population. Genetic variation results from meiotic cell division where recombination of gene produces genetic exchange of heredity material.
Those traits which are successful in nature that means those variations which provide stability to the organism in any environment are favoured. Organisms with such variations adapt, survive and further reproduce to continue their existence. Such traits are transmitted to the progeny as well.
Thus, gradual accumulation of changes in traits contribute to a more stable population over the span of years.
Therefore, changes in traits are important in determining the track of evolution on earth.
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The food manufactured by the photosynthetic process is ____.
A.starch
B.glucose
C.lipids
D.proteins
Please help and please no links
Cells in the leaves of plants contain specialized structures called
chloroplasts. How are chloroplasts related to the function of the leaf cells?
A. Chloroplasts transport water and nutrients through the plant.
B. Photosynthesis occurs in chloroplasts.
C. Plant reproduction occurs in chloroplasts.
O
D. Chloroplasts absorb substances from the soil.
Answer:
B
Explanation:
Plants use photosynthesis from chloroplasts to make food
Which is a function of the structure that is represented in the image?
Answer:
Thats the cell membrane, its lets things in and out of the cell for energy and whatnot
Explanation:
cellular respiration and that stuff
Plants also use cellular respiration
A. True
B. False
Answer:
A. True
Explanation:
Yes, the plants use cellular respiration. So, option (A) is the correct answer.
SOMEONE ANSWERE FAST PLEASE!!!!!!!!
The figure above represents forelimbs from mammals
that all have different uses depending on the
environment in which they live, yet they all have the
same basic pattern of bones. They inherited this
pattern from a common ancestor. This type of evidence
for evolution is called...
a. Analogous Structures
b. Homologous Structures
c. Vestigial Structures
d. DNA Sequence Comparison
Do homologous structures always have the same function in different organisms?
Answer:
Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants.
My answer uh might not be the one you're looking for or isn't correct ✌
Explanation:
Which of the following is the best definition of a system?
A. a collection that shares the same function
B. The form and arrangement of an object or material.
C. Anything that takes up space and has mass.
D A group of objects and materials that are interrelated.
Answer:
D. A group of objects and materials that are interrelated
Which process occurs within the mitochondria?
Answer:
Krebs cycle
Explanation:
The Krebs cycle is a set of chemical events that all aerobic organisms employ to generate energy by converting acetate (which comes from carbs, lipids, and proteins) to carbon dioxide. There are various alternatives to the TCA cycle in theory, but it appears that the TCA cycle is the most efficient.
Answer: Mitochondria, using oxygen available within the cell convert chemical energy from food in the cell to energy in a form usable to the host cell. The process is called oxidative phosphorylation and it happens inside mitochondria. ... In heart muscle cells about 40% of the cytoplasmic space is taken up by mitochondria.
Explanation:
The process is called oxidative phosphorylation and it happens inside mitochondria. In the matrix of mitochondria the reactions known as the citric acid or Krebs cycle produce a chemical called NADH. NADH is then used by enzymes embedded in the mitochondrial inner membrane to generate adenosine triphosphate (ATP).
Hope it helps you
Al cruzar 2 moscas negras se obtiene una descendencia formada por 216 moscas negras y 72 oscuras blancas. A) Razone el cruzamiento y determine fenotipo y genotipo.
Answer:
Fenotipo: Moscas negras y moscas blancas.
Genotipo: Nn y nn.
Explanation:
Sabemos que al cruzar dos moscas un pequeño porcentaje de su descendencia es blanca y la mayoría negra. Por ende, hay dos alelos distintos para el color, uno codifica para moscas de color negro y el otro para las de color blanco. Como la mayoría de la descendencia es negra, el gen domiante es el negro, a este lo denominaremos con la N y al recesivo con la letra n.
Para que haya moscas blancas, las dos moscas que se cruzan tienen que ser Nn, es decir, su genotipo tiene que ser heterocigoto. Podemos verificar esto con un cuadro de Punnett:
║N ║n
N║NN║Nn
n║Nn ║nn
Con el cuadro de Punnet vemos que la descendencia tiene los genotipo, es decir, los genes que un ser tiene, Nn y nn. El fenotipo, es decir, lo que podemos ver de los genes, sera moscas de color negro y moscas de color blanco.
Como el gen dominante es el negro, cualquier mosca con este gen expresara este color y solo las moscas con genotipo h0m0cigoto (nn) expresaran el color blanco.