Answer: Red algae- Green and red algae have a likely common ancestor.
HELP!!!! WILL GIVE BRAINILEST!!!
A student like yourself planned and set up the next experiment. Look at it carefully.
In two weeks, the root should:
Grow straight downward dramatically
Wither and dry up
Bend and grow toward the wet soil at the right side of the container
Answer:
The plant will grow towards the wet sponge
Explanation:
The plant is in constant need of it's tools for survival: being sunlight, water, carbon dioxide, and other necessities. If the soil is extremely dry, then it will adapt to the pot/container, and grow towards the water source. This process also works with sunlight.
B)¿Cuál de las siguientes asociaciones entre estructura y función es falsa? A. Médula espinal –apreciación de sensaciones B. Cerebelo –coordinación motora. C. Cerebro –función intelectual. D. Bulbo raquídeo –control de la frecuencia del latido cardíaco. c) ¿Cuál de los siguientes procesos es el resultado de la acción del sistema nervioso parasimpático? A. Dilatación de la pupila. B. Inhibición de la digestión. C. Aceleración de la frecuencia cardiaca. D. Contracción de los bronquios. d) Morfológicamente la neurona consta de: A. Axón, dendritas y cuerpo neuronal. B. Soma, axón y nodos de Ranvier C. Soma y prolongaciones D. Soma y dendritas
Answer:
B) A. FALSO.
B. VERDADERO.
C. VERDADERO.
D. VERDADERO.
c) D. Contracción de los bronquios.
d) A. Axon, dendritas, cuerpo neuronal.
Explanation:
B) A. FALSO. La médula espinal es una estructura tubular larga y delgada, formada por tejido nervioso, que se extiende desde la médula oblonga del tronco cerebral hasta la región lumbar de la columna vertebral. El cerebro junto con la médula espinal forman el sistema nervioso central, y particularmente la médula espinal es la vía para transmitir los mensajes que envía el cerebro al cuerpo y del cuerpo al cerebro. Entonces no se ocupa de la apreciación de sensaciones.
B. VERDADERO. El cerebelo desempeña un papel importante en el control motor pero también puede estar implicado en algunas funciones cognitivas, como el lenguaje así como en el control emocional, la regulación de las respuestas de miedo y placer,. Aunque sus funciones relacionadas con el movimiento son las más importantes.
C. VERDADERO. El cerebro es la porción mas grande del encéfalo (órgano dentro del cráneo) y está formado por dos hemisferios. También comprende varias estructuras subcorticales, como el hipocampo, los ganglios basales y el bulbo olfativo. Es la región más grande del sistema nervioso central y sus funciones incluyen la iniciación y coordinación del movimiento, tacto, visión, oído, regulación de la temperatura, el razonamiento, las emociones, aprendizaje, etc.
D. VERDADERO. La médula oblonga o bulbo raquídeo es una larga estructura en forma de tallo que constituye la parte inferior del tronco encefálico. Se encarga de conectar al cerebro con la médula espinal, y es responsable de varias funciones del sistema nervioso autónomo que incluyen el control de la ventilación a través de señales procedentes de los cuerpos carotídeos y aórticos como también el control cardiovascular al regular los latidos cardíacos. Aunque también está relacionado con otras funciones tales como la tos, estornudo, reflejos del vómito y la deglución.
c) El sistema nervioso parasimpático (SNP) es una de las tres divisiones del sistema nervioso autónomo, siendo las otras el sistema nervioso simpático y el sistema nervioso entérico. El sistema nervioso autónomo se encarga de regular las acciones inconscientes del cuerpo, en donde el sistema parasimpático es responsable de la estimulación de las actividades de "descanso y digestión" cuando el cuerpo está en reposo, especialmente después de comer. Controla por ejemplo, la salivación, el lagrimeo, la micción, la digestión y la defecación. Su acción se describe como complementaria a la del sistema nervioso simpático, responsable de estimular las actividades asociadas a la respuesta de "lucha o huida". Entonces los procesos que son resultado de la acción del sistema nervioso parasimpático son:
D. Contracción de los bronquios. El SNP controla órganos en situaciones o momentos que requieren una respuesta rápida.
d) Una neurona o célula nerviosa es una célula eléctricamente excitable que se comunica con otras células a través de conexiones especializadas llamadas sinapsis. La misma consta de:
A. Axon (proyección larga y delgada de una célula nerviosa que conduce impulsos eléctricos conocidos como potenciales de acción), dendritas (extensiones protoplásmicas ramificadas de una célula nerviosa que propagan la estimulación electroquímica recibida de otras células neuronales al cuerpo celular), cuerpo neuronal (o soma, es la parte bulbosa de una neurona que contiene el núcleo celular)
The diagram shows some of the structures in a human lung. Where is the carbon dioxide concentration highest? Support your answer with the scientific details required.
Answer:
W - Facilitates movement of air by expansion and contraction, X - Traps dust and helps to filter inhaled air, Y - Prevents the wind pipe from collapsing, Z - Help in exchange of gases.
Explanation:
Diaphragm is the muscle that separates the thoracic cavity from the abdomen. The diaphragm is the main muscle of respiration. Contraction of the diaphragm muscle expands the lungs during inspiration when breathing air in. The function of the nasal cavity is to warm, moisturize, and filter air entering the body before it reaches the lungs. Hairs and mucus lining the nasal cavity help to trap dust, mold, pollen and other environmental contaminants before they can reach the inner portions of the body. The trachea, or windpipe, is a 5-inch long tube made of C-shaped hyaline cartilage rings lined with pseudostratified ciliated columnar epithelium. The trachea connects the larynx to the bronchi and allows air to pass through the neck and into the thorax. The rings of cartilage making up the trachea allow it to remain open to air at all times. Gas exchange of oxygen and carbon dioxide takes place in the alveoli. Oxygen from the inhaled air diffuses through the walls of the alveoli and adjacent capillaries into the red blood cells. The oxygen is then carried by the blood to the body tissues.
The part of the lungs where Carbon Dioxide concentration is highest is in the part labeled A.
The entire diagram is called ALVEOLI.
This structure is a semi-permeable membrane wired with blood vessels on its walls. It is in these sacs that the body gives off carbon dioxide and takes in oxygen. The blood vessels which are wired around the sacs are called Capillaries.
The part labeled B is the pulmonary artery. It feeds de-oxygenated blood to the capillaries. Through the walls of the capillaries, the carbon dioxide is removed from the blood into the alveoli and takes up oxygen from the air in the alveoli. The oxygenated blood then moves back into the body via the pulmonary vein which is labeled D on the diagram.
Learn more about the structure of the human lung here:
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explain the movement of food through the phloem using the mass flow hypothesis
what can be caused by rainfall on non porous ground
Explanation:
Rainfall and surface runoff
Rainfall, and the surface runoff which may result from rainfall, produces four main types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.
Describe a situation in which your reaction time is very important. Describe the signal and the reaction to that signal.
(Example: you touch something hot [signal] and your hand pulls away [reaction]).
Answer:
Driving: when the light is red, you step on the brakes to stop and avoid traffic accidents.
What action would you recommend to the point guard?
a) Eat a sandwich
b) Eat something salty
c) Drink lots of water
d) Drink a maltose sports drink
Which stem type increases in diameter each year?
A. woody
B. leafy
C. gummy
D. herbaceous
Answer:
A
Explanation:
Woody stems are stiff and increase in size year after year.
I will love you so much whoever can answer this please <3
¿Qué características tuvieron las primeras células que aparecieron en la Tierra?
How has the world population changed in the last 200 years?
HELP ME PLEASEEEE I NEED THIS SOON ILL GIVE
Answer:
B
Explanation:
Answer: B) the Genotypes are XX and Xx C) There is a 50 percent chance of their kids having hemophilia. I'm not 100% sure if the kid would be male or female for C
Explanation:
Help me please please please
Answer:
1.b
Explanation:
Your friend performed an experiment and reported that his hypothesis was proven by his dala,
this wrong? EXPLAIN!!!
Answer:
An expirement must have a variable! :) hope this help, have a good day!!
Explanation:
Eventually, do you think you will the population of the black will decrease and the white increase?
A. Yes
B. No
Answer:
B. No
Explanation:
Projections show that whites will decline; the number of old people will increase; and racial minorities, mainly Hispanics, will grow the most, making them the main engine of demographic change in the U.S. for the next 10 years and beyond.
Today, there are over 74.1 million people under age 18 in the U.S. country. There are 56.4 million people age 65 and older.
Ten years from now, there will almost be as many old folks as there are young ones. The numbers of young people will have grown just a little to 76.3 million, but the numbers of old people will have increased a lot – to 74.1 million. A lot of these new elderly will be baby boomers.
Please help me on this question.
Which type of weathering involves the outer layers of rock peeling off due 1
to the rock expanding as it is heated and contracting as it cools?
Hydration
Exfoliation
Oxidation
Tree Root Action
Answer:
Exfoliation
Explanation:
it peels of my teacher said it like an onion
Answer:
Insolation weatheringExplanation:
Expansion of rock surface when heated by the Sun followed by contraction as the temperature falls can allegedly weaken bonds along grain boundaries and cause subsequent flaking off of rock fragments or dislodging of mineral grains. This is called insolation weathering.
11. How would sheep be kept and fed in an extensive grazing system?
O A. Sheep would be kept on feedlots to reduce the amount of space they take up.
O B. Sheep would be allowed to graze on rangelands without rotational stocking.
O C. Sheep would be allowed to graze on a pasture during specific times of the year.
O D. Sheep would be rotated through paddocks to allow land to rest between grazings.
Answer:
Option B
Explanation:
In an extensive farming, animals are raised in the most natural way and hence the animals are allowed to roam around the farmlands without any barrier and they are free to express and control their behavior.
Sheep in extensive farming are allowed to graze freely across the farmland at any time of the day.
Hence, option B is correct.
How many nucleotides are
involved in a point mutation?
?
Answer:
It is the result of a single nucleotide, but due to the one mistake of the first singular nucleotide many can be changed.
Answer:
One or a few
Explanation:
in the image below which letters represent facilitated diffusion?
Answer:
A, B, C
Explanation:
One is a channel, one is a carrier, the other is simple
Biologists look at how organisms are related and when they first appeared on Earth. Which of the following is true about the organisms that live on Earth today?
A. All organisms that have ever lived on Earth can still be found alive today.
B. Some of the organisms alive today have been around for 4.6 billion years.
C. The organisms alive today are the same as the ones found in fossils.
D. The organisms alive today evolved from organisms that previously lived on Earth.
Answer:
the organisms alive today evolved from organisms that previously lived on Earth.
Explanation:
nuneeedadoll on IG
The organisms that live on Earth today evolved from organisms that previously lived on Earth.
What is pre existing organism?The focus of biogenesis states that all living organisms arise from a pre-existing living organism. The theory of biogenesis is given by Louis Pasteur.
The theory said that life comes from pre-existing life, by means of reproduction. Living beings do not arise from non-living things.
Thus, option "D" is correct, organisms arise from a pre-existing living organism.
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Can someone help me please (please hurry this is due in 1 minute)
explain the biological principle behind the preservation of meat by salting
Which action has a positive effect on air tesources?
A using fossil fuels
B building new homes
C walking to work or school
D removing vegetation such as trees
Answer:
c
Explanation:
The fact that cats and humans are both classified as mammals provides us with which minimum of information?
O Both have mammary glands
O Humans evolved from cats
O Cats have descended from other cats
O The ancestors of humans was a cat like creature
O Cats and Humans are unrelated
Answer:
a. option :both have mammary glands is the correct answer right no
Which component in blood is directly related to Hemophilia? Why?
Answer:
Hemophilia is a hereditary bleeding disorder caused by a deficiency in one of two blood clotting factors: factor VIII or factor IX. Several different gene abnormalities can cause the disorder.
Explanation:
Tundra and alpine biomes are both characterized by low temperatures and
few trees. How are these two biomes different?
A. The tundra occurs near the North Pole. The alpine biome occurs
near the South Pole.
B. The tundra is near the tops of mountains. The alpine biome is
near the North Pole.
C. The tundra is near the North Pole. The alpine biome is near the
tops of mountains.
D. The tundra is near the North and South poles. The alpine biome is
along the equator.
!!HELP PLEASE!!
Answer:
it definitely c
Explanation:
because the tundra occurs at near the North Pole it is very cold in the Arctic and it's found in the northern hemisphere while the Alpine is found at the tops of mountains in a more warmer area with trees tundras are more Frozen
What are the major components of whole blood? ANSWERS
A) hormones, enzymes, and organic C) plasma and formed elements
wastes
B) albumin and immunoglobulins D) red and white blood cells
Answer:
D) red and white blood cells
A farmer wanted to test the best way to grow tall lemon trees. Two groups of lemon trees were planted in a grove. One group of lemon trees was watered daily and the other group was watered twice a week.
Answer:
The group of lemon trees that was watered twice a week grow taller.
Explanation:
The group of lemon trees that was watered twice a week grow taller as compared to other group in which lemon trees was watered daily because too wet condition for the lemon tree is bad and can adversely affected its growth and development. Lemon tree needs optimum water for its growth and development. Too much water or drought condition adversely affected the growth of lemon tree which leads to lower height of the lemon tree.
2. Which statement is incorrect about natural selection? A. A single organism can adapt to a cold environment by growing longer hair B. Over time organisms with longer hair will survive better in cold environments C. Humans are not involved in the natural selection process D. The offspring of each generation will likely be more adapted to the environment