Answer:
50% i checked
Explanation:
Match the 4 factors that affect Natural Selection to each example:
a. Heredity b. Variation c. Competition d. Survival & Reproduction
1.Organisms pass on their genes to the next generation.
2.Giraffe offspring have different spots than their parents.
3.Fish have more offspring than can survive with limited resources
4.Individuals with the highest level of fitness survive to reproduce.
Answer:
Correct answers are:
a - 1.
b - 2.
c - 4.
d - 3.
Answer:
a is 1, b is 2, c is 4, and d is 3.
Explanation:
organisms passing on genes to their offspring (the next generation) is what we call hereditory genes.
giraffe offsprings having different spots than their parents is variation. each giraffe has a variety of different spots.
fish having more offspring and having limited resources means competition for the limited resources.
lastly, individuals who are stronger/faster strive to survive so the can reproduce.
ANSWER NOW TO GET BRAINLEST IF I WERE YOU I WOULD BE BE ANSWER THIS RN AND HAS TO BE CORRECT ANSWER
Answer:
i believe C
Explanation:
the layers propose a volcanic eruption along with the crystals such as how an agate forms.
Which type of respiration takes place when there is no oxygen present?
O A. Cellular
B. Aerobic
C. Mitochondrial
D. Anaerobic
Answer:
Anaerobic respiration
Genes from parent to child remain the same in which type of reproduction?
A.
sexual reproduction
B.
inbreeding
C.
asexual reproduction
D.
selective breeding
which organelle would be very abundant in pallisade cell
From smallest to largest what is the order of the human body organ system
are human nails exoskeleton
Answer:
no, the nails are not an exoskeleton
Explanation:
Humans don't have an exoskeleton. Invertebrates have an exoskeleton and vertebrates have an endoskeleton.
Hence, the nails are not exoskeleton, the nails are derivates of the skin. We don't need our nails to survive, but they do support the tips of our fingers and toes, protect them from injury, and help us pick up small objects
Which event is evidence of a chemical change?
O A. A stem is removed from an apple.
OB. A slice of an apple turns brown.
OC. An apple is cut into slices.
O D. An apple is peeled. PLS HELP THIS IS FINALS FAST PLS
Answer:
B everthing else is phisical
Explanation:
Answer:
its b
Explanation:
Choose the plant that grows from a root?
1. Onions
2. Grass
3. Beans
4. Cattails
Answer:
grass
Explanation:
Sedimentary rocks form because of all of the following EXCEPT ____. a. sediments becoming pressed or cemented together b. crystals solidifying from magma c. sediments forming from solution d. water evaporating, leaving crystals behind
Answer:
a
Explanation:
You are observing a sample of cells in the lab to
determine why they did not divide properly. You notice
that the chromosomes are lined up in the middle of
the cell, and the spindle fibers have extended towards
them, but have not attached. What could be
damaged?
A. Mitochondria
B. Centromere
.
C. Nuclear envelope
D. Cytoplasm
Answer:
B) Centromere
Explanation:
The spindle fibers attach to the centromeres via the kinetichore. If they are damaged, the centromeres may not be able to attach to the kinetichore and pull the chromosomes apart.
Answer:
B. Centromere
Explanation:
Very easy am just not smart lol answer please brainliest to whoever answers right
Answer:
becuase its juss a childs mind it wonders trinna figure stuff out always askin questions to get tha answer
Explanation:
What must be true of the concentration of potassium and sodium inside the neuron?
Answer: The sodium/potassium (Na+/K+) pump introduces two potassium ions that were outside and expels three sodium ions that were inside the neuron. After that, the sodium ions cannot re-enter the neuron, because the membrane is not permeable to it. This means 3 positive charges are lost every time the pump works and this makes that in the outside there are more positive loads that in the interior, creating a difference of potential. When the nervous impulse reaches a neuron in a state of rest, the membrane is depolarized, and this opens the channels for sodium, thereby the polarity is inverted. At the end, the neuron must return to the initial rest potential and the membrane is repolarized, closing the channels for sodium.
Explanation:
A neuron is a type of cell found in the central nervous system that is able to receive, process, decode and send information in the form of electrical or chemical signals through the process of synapses. This allows the transmition of information to other cells in the form of nerve impulses, which translates into "instructions" for the rest of the organism. So during the synapse, this process can be of two types:
Chemical synapse: neurons release and receive neurotransmitters, which are small molecules that carry information.Electrical synapse: it is faster and bidirectional, characterized by the transmission of ions between neurons through protein connections, called gap joints or cleft joints, without the intervention of a neurotransmitter.The information between neurons is transmitted by changes in the polarity of the cell membranes, due to the presence of neurotransmitters that alter this ionic concentration inside the cell. So they are responsible for depolarizing the membrane of the neuron that receives the nerve impulse, opening the channels for sodium that remained closed before. The difference in ion concentration produces a difference in the potential between the exterior of the membrane and the interior of the cell, and it is achieved by the action of the sodium/potassium (Na+/K+) pump which introduces two potassium ions that were outside and expels three sodium ions that were inside the neuron. After that, the sodium ions cannot re-enter the neuron, because the membrane is not permeable to it. This means 3 positive charges are lost every time the pump works and this makes that in the outside there are more positive loads that in the interior, creating a difference of potential. It is said that the neuron is in rest potential, ready to receive a nervous impulse.
When the nervous impulse reaches a neuron which is in a state of rest, its membrane is depolarized, and this opens the channels for sodium, thereby the polarity is inverted. After this, the interior of the neuron reaches an electropositive value, with respect to the exterior. Initally, the value is about -70 millivolts (negative the interior with respect to the outside). When there is a change of potential of 120 millivolts more than the interior, the action potential has been reached and there is a transmission of the nervous impulse to the next neuron.
At the end, the neuron must return to the initial rest potential and the membrane is repolarized, closing the channels for sodium. Enzymes destroy neurotransmitters and the rest potential is reached when the sodium is expelled by the Na+/K+ pump.
Can weathering and erosion break down any type of rock?
Answer:
Over time, yes, weathering and water will break down rocks, acid rain especially.
Explanation:
Fill in the following flowchart to show the pathway of a red blood cell as
journeys from the right ventricle to the brain.
lungs
right ventricle
left atrium
brain
What substance does haemoglobin in red blood cells form as the blood
through the lungs?
Answer:
1. The pathway of a red blood cell from the right ventricle to the brain is:
Right ventricle → pulmonary arteries → lungs → pulmonary veins → left atrium → left ventricle → artery aorta → arterial vessels → brain .
2. The substance that forms hemoglobin in red blood cells when it passes through the lungs is oxyhemoglobin.
Explanation:
Red blood cells are structures present in the blood, whose function is to transport oxygen (O₂) and carbon dioxide (CO₂). This process requires travel throughout the body, through the blood vessels, and gas exchange at the pulmonary and tissue level.
1. A red blood cell in the right ventricle contains carbon dioxide and must pass to the lungs to be oxygenated. The route it takes from there includes Right ventricle (minor circulation) → pulmonary arteries → lungs → pulmonary veins → left atrium → left ventricle → (joining the major circulation) artery aorta → arterial vessels → brain .
2. The red blood cell or erythrocyte contains a molecule, called hemoglobin, which has an iron core that allows it to bind to O₂ and CO₂ in order to transport them. The affinity for one molecule or another depends on the presence of a certain gas in a certain place.
When the red blood cell passes through the lungs, the concentration of O₂ is higher than CO₂, so the latter is released and O₂ binds to hemoglobin, a conjugation that is called oxyhemoglobin.
what are causes of genetic erosion?
Explanation:
One of the main causes of genetic erosion is the replacement of local varieties by modern varieties. Other causes include environmental degradation, urbanization and land clearing through deforestation and bush fires.
hope it helps!
Which of the following is the effect of a mutation?
A. It will hurt the organism
B. It will help the organism
C. It will have no effect on the organism
D.It could be any of the above choices
Answer:
I'm going to say D not totally sure but the answer sound's reasonable
When energy is used, what is broken
Energy is absorbed to break bonds. Bond-breaking is an endothermic process. Energy is released when new bonds form. Bond-making is an exothermic process.
Exothermic - accompanied by the release of heat.
HOPES THIS HELPS YOU!!! PLEASE MARK AS BRAINLIEST????
how does botany and stomach contents help during a crime scene investigation
Answer:
These DNA methods may be useful for linking an individual to a crime scene or physical evidence to a geographic location, or tracking marijuana distribution patterns.
Explanation:
they need stomach contents so the can see if ur doing drugs or not
An electoron microscope is necessary for the study of ......... fill in the blanks
Answer:
subatomic particles
Explanation:
this is the ans
pls give brainliest
Which of the following processes occurs in the mitochondria?
cellular mutations
cellular respiration
transcription
translation
Answer:
Process that occurs in the mitochondria is cellular respiration (second option).
Explanation:
Cellular respiration consists of the process in which an energetic substrate, such as glucose, is oxidized for energy, in the presence of oxygen. This process occurs in a cellular organelle called the mitochondrion.
In the mitochondria, oxidative phosphorylation and the electron transport chain occur as part of energy production, processes that are linked to produce cellular respiration and obtain energy in the form of ATP.
The other options are not correct because:
Cellular mutations occur at the molecular level, in the DNA. Transcription occurs in the cell nucleus. Translation occurs in the cytoplasm, with the participation of mRNA and ribosomes.About biology fund nutrition
HELP QUICK PLZ!!!!!!!
Question 1(Multiple Choice Worth 1 points)
(04.01 LC)
What is a molecule called when it has more than one element?
Atom
Cell
Compound
Organ
Question 2(Multiple Choice Worth 1 points)
(04.01 LC)
The way living things are organized can be represented on a chart. A portion of the organization chart is shown below:
A box labeled Cells has an arrow pointing right towards another box labeled X. The box labeled X has an arrow pointing right towards another box labeled Organs.
What best represents X?
Atoms
Molecules
Organisms
Tissues
Question 3(Multiple Choice Worth 1 points)
(04.01 LC)
Which of the following is the highest level in the organization of living things?
Organ system
Organism
Tissue
Compound
Question 4(Multiple Choice Worth 1 points)
(04.01 LC)
What is a group of specialized cells called when they work together to perform a specific function?
Atom
Organ
Organ system
Tissue
Question 5(Multiple Choice Worth 1 points)
(04.03 LC)
Which part of a living cell is called the powerhouse because it carries out cellular respiration to make energy?
Mitochondria
Nucleus
Ribosome
Vacuole
Question 6(Multiple Choice Worth 1 points)
(04.03 LC)
Which of the following best matches a part of a living cell with the function it performs?
Cytoplasm: green structure inside plant cells
Nucleus: green structure inside plant cells
Cytoplasm: directs all of the cell's activities
Nucleus: directs all of the cell's activities
Question 7(Multiple Choice Worth 1 points)
(04.03 MC)
Two cell organelles are described below.
Organelle A: Present in plant cells but not present in animal cells
Organelle B: Much larger in size in plant cells than in animal cells
Which of the following is most likely correct?
Organelle A is vacuole, Organelle B is chloroplast
Organelle A is chloroplast, Organelle B is vacuole
Organelle A is nucleus, Organelle B is mitochondria
Organelle A is mitochondria, Organelle B is nucleus
Question 8(Multiple Choice Worth 1 points)
(04.03 MC)
What will most likely happen in the absence of a vacuole?
Photosynthesis will not take place.
Genetic information will not be transmitted by the cell.
Energy will not be released during cellular respiration.
The cell will not store food, water, nutrients, and waste.
I will give brainliest for first one to get all right!!!
Answer: compound
Explanation: a molecule consists of two or more atoms. Some molecules have only one type of atom, e.g. O2, H2
Other molecules are made up of different elements and we call these compounds, e.g. H2O
’cell’ has several meanings, but whatever the meaning, it consists of billions of atoms and molecules.
’organ’ also has several meanings but is also a complex object like ‘cell’.
Answer:
1. Compound
2. Cells
3. Tissues
4. Organism
5. Organ System
I am doing the test as I answer this, these are some answers I checked.
How is the inside of your ear like the inside of your nose?
A. Both regions are associated with balance and motion
B. Neither region is associated with sensory perception
C. Both regions contain tiny sensory hair cells
D. Neither region sends signals to the brain
Between 1955 and 1977, groundwater was used to irrigate crops in the San Joaquin Valley. Which of these was a consequence? A. An increase in ground altitude B. Wetland sprawl C. A decrease in soil salinity D. Groundwater depletion
Answer:
D. Groundwater depletion
Explanation:
Groundwater is the water that is found just under the surface of the earth.
The effect of using groundwater to irrigate crops between 1955 and 1977 in the San Joaquin Valley was that there was groundwater depletion as there was scarcity of groundwater, even as the irrigation brought increase in yield.
Witch of the following is a common natural indoor air pollutant?
A. VOCs from furniture
B. Lead from paints
C. Radon
D. Insulation
Answer:nitrogen oxide
Explanation:
PLEASE HELP I WILL GIVE YOU BRAINLIEST PLS EXPLAIN!!!!
Answer:
Newton's second law: force and acceleration are proportional, mass and acceleration are… The acceleration of an object as produced by a n is directly proportional to the magnitude of the n in the same direction as the net force, and invers proportional to the mass of the object.
Explanation:
the process of fusion of gametes is called starting letter f
Answer:
Fertilisation
Explanation:
The main motive of all living organisms is to produce offsprings to the next generation.
HELP PLEASE HURRY
Match the following:
1. Picard & Walsh
2. Forbes and Maury
3. developed in 1922
4. locates survivors at sea
5. averages 30 miles wide
6. distance of open water which wind flows
7. rescued at 5,000 foot depth
8. query buoy-mounted systems
bathyscaph Trieste
Alvin
fetch
continental shelf
satellite mounted sensors
sofar
“Father of Oceanography”
echo sounder
Answer:
Piccard and Walsh + Bathyscaphe TriesteForbes and Maury + Father of OceanographyDeveloped in 1922 + Echo sounderLocates Survivors at Sea + SofarAverage of 30 miles wide + Continental shelfThe distance of open water over which wind flows + FetchRescued at 5,000-foot depth + AlvinQuery buoy-mounted systems + satellite mounted sensorsExplanation:
Trieste was the name given to a Bathyscaphe which was designed by the Swiss and built by the Italians. A Bathyscaphe is a deep-sea vehicle or submersible that is able to propel its self and will require the presence of a crew cabin. Jacques Piccard and Don Walsh jointly achieved the goals of Project Nekton one of which was to get to the bottom of the challenger deep. The challenger deep is the deepest point in the earth's sea bed. Auguste Piccard is an Italian and the son of the man who designed the boat: August Piccard whilst Don Walsh is a US Navy Lieutenant.Edward Forbes is considered the pioneer of oceanography and his area of specialty was the biological components of the ocean. Matthew Maury, on the other hand, is considered the father of oceanography because he focused on the physical components of the ocean such as currents, waves and temperature fluctuations.Echo sounding is a special sonar that is used to calculate the exact depth of water. The device does this by transmitting sound waves into water the speed is calculated. Sofar station was finished on the 4th of July, 1946. The full meaning of SOFAR is Sound Fixing And Ranging. It was designed or built to be able to locate stranded paramilitary such as Navy and Airforce survivors at sea.The continental shelf is estimated by some to be approximately 30 miles wide. The continental shelf is a space beneath the ocean that speads out like a plateau and which holds a lot of biotic elements.Waves are generated when wind flows over a water body in one direction for a protracted period. The Fetch is the oceanographic term for that area in the ocean where this phenomenon is prevalent.Alvin is another name for DSV-2 - a deep ocean submersible owned by the United States which has made a deep dive at least 5000.Cheers
Photosynthesis
in chemical equation
Answer:chemical equation for photosynthesis is-------------------------------------------6CO2 + 12H2O ----> C6H12O6 + 6H2O + 6O2❤❤❤❤❤❤