Answer:
Abstract. A leaf develops from a few cells that grow, divide, and differentiate to form a complex organ that is precisely positioned relative to its neighbors. How cells communicate to achieve such coordinated growth and development is the focus of this review.
Heredity is the passage of what from parent to offspring?
a. Genetic material
b. Oxygenated blood
c. Digestive enzymes
d. Connective tissue
Answer:
A
Explanation:
Genetic material is what passes down traits and makes us look similar to our parents
When we talk about heredity, we're talking about the precise ways that genes are used to transmit traits or characteristics from one generation to the next, hence option A is correct.
What is Heredity?The instructions for creating certain proteins, which are in charge of an individual's distinctive qualities, are encoded by genes.
The youthful creation of living creatures, known in biology as progeny, can be created by a single organism or, in the event of sexual reproduction, by two organisms.
DNA (deoxyribonucleic acid), which makes up genes, contains instructions for how cells should function as well as the traits that distinguish each individual.
Therefore, each of your biological parents contributes half of your DNA to you, and you could inherit a gene mutation from one or both of them, hence option A is correct.
Learn more about genes, here:
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Pleaseee help! Don’t answer if you don’t know the answer, you will just waste your time! :)
Answer:
1. Red flowers: RR, White flowers: WW, Red & white flowers: RW
2. Incomplete dominance
3. Purebred
4.Offspring are more rapidly produced
5. 100% red flower offspring, 0% white flower offspring
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Answer:
70000
Explanation:
i have to o sciece
Winds may be named for their location or for the direction from which they blow. Which winds blow from 30° latitude in both hemispheres almost to the equator?
2 points
A. easterlies
B. westerlies
C. trade winds
D. the doldrums
help fast pls
Answer: C. Trade winds
Explanation:
These winds blow from 30° latitude to the equator in both hemispheres.
To the north of the equator, they blow towards the west and to the south they blow towards the east.
These winds are strong in winter and were very important in the days where wind power was needed for ships as they carried ships on trade routes. They even carried the ships that colonized America.
Which of the following factors can influence the behavior of transcription factors when they are expressing a trait?
Choose all that apply:
A. Enzymes that regulate cell division.
B. Signals from other cells.
C. Temperature of the environment.
D. Frequency of protein formation.
Answer:
A
Explanation:
Landforms are created through destructive forces such as weathering. Which of these is an example of physical weathering? A acid rain. B abrasion. C hydrolysis. D oxidation
Answer: C. HYDROLYSIS
Explenation: Chemical weathering occurs when water dissolves minerals in a rock, producing new compounds. This reaction is called hydrolysis. Hydrolysis occurs, for example, when water comes in contact with granite.
Landforms are created through destructive forces such as weathering, so abrasion is an example of physical weathering that is in Option B as the physical weathering is a type of weathering that involves mechanical breakdown.
What is the significance of weathering in the environment?Physical weathering is caused by physical forces, such as the expansion and contraction of rock due to changes in temperature and abrasion is a specific type of physical weathering that occurs when rock or soil is rubbed against other rock or soil. In physical weathering, rock fragments or particles are carried by water, wind, or ice, and the repeated collisions and friction caused by abrasion can lead to significant changes in the shape.
Hence, landforms are created through destructive forces such as weathering, so abrasion is an example of physical weathering that is in Option B as the physical weathering is a type of weathering that involves mechanical breakdown.
Learn more about the weathering here.
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what human activity produces the most methane gas?
Answer:
This is because of human activities like fossil fuel use and intensive farming.
Explanation: HOPE IT HELPS
Internal feedback mechanisms keep your body in homeostasis as
A you breathe faster while slowing from a jog to a walk
O B. you breathe faster while running faster
O C. you breathe slower while you are bleeding
O D. you breathe slower while your heart rate increases
Answer:
the answer is A because it is the best answer
Which one is it ill give brainliest
Answer:
D
Explanation:
Help please need help this is due soon
Answer:
2)parastice
4)predation
hope this helps and this is the far I can get
On average, about how many beats does the heart produce per minute?
The heart beats 40 beats per minute
PLEASE I NEED HELP!!
Students are asked to make a model that shows each level of structural organization and its function in human beings. Which model should the students use to explain the hierarchy of levels of organization in human beings correctly?
Answer:
The correct answer is option A. muscle cell, muscle tissue, biceps, muscle system, and human being.
Explanation:
In humans and other mammals, there is a specific type of structural organization found in which involves fundamental units to the most exclusive level of organization. The cell is the most basic and fundamental unit of the organism's structure.
Cells joined together to form tissues like muscle cells form muscle tissues, tissues grouped with each other into organs like muscle tissue form biceps, different organs are grouped into organ systems like muscle system form from organs, and many organ systems come together to form complex organisms like human beings.
For each of the following causes of extinction, explain how the increase in the human population makes the problem worse.
a. Habitat alteration
b. Commercial hunting
c. Competition
d. Sport hunting
e. Pest control
f. Pollution
Answer:
Im pretty sure its E sorry if its wrong.
How many chromosomes does a human body cell contain?
Answer:
A human body contains 46 chromosomes in pairs of 2
Explanation:
A human body contains 46 chromosomes in pairs of 2
Explanation:
Which of the following is a possible path for carbon to cycle through an ecosystem?
1. Atmospheric CO2 -> animals -> factories -> fossil fuels -> plants
2. Atmospheric CO2 -> factories -> fossil fuels -> animals -> plants
3. Atmospheric CO2 -> plants -> animals -> fossil fuels -> factories
4. Atmospheric CO2 -> fossil fuels -> factories -> animals -> plants
Answer: 3. Atmospheric CO2 -> plants -> animals -> fossil fuels -> factories
Explanation:
The carbon cycle is one of the types of biochemical cycles in which carbon is recycled in atmosphere, biosphere, lithosphere, and hydrosphere in various forms. The atmospheric carbon dioxide is absorbed by the plants and they utilize it as reactant for the process of photosynthesis in which they synthesize their own food. These plants are consumed by animals further when these plants and animals die their remains form fossil fuels deep beneath the earth crust. It takes about millions of years for fossil fuels to form in the sedimentary rocks. The fossil fuels are utilized by the factories to run their machines. Again when fossil fuels burn they emit carbon dioxide gas in the atmosphere.
why are there different types of vaccines
Answer:
to cure different types of things like corona and other things
For a specific cactus plant, cacti homologous for red flowers were crossbred with cacti homologous with white flowers. The next generation was 100% pink. Which genetic term best describes this result? Explain your reasoning.
Answer:
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For a specific cactus plant, cacti homologous for red flowers were crossbred with cacti homologous with white flowers. The next generation was 100% pink, then it is called as incomplete dominance as the offsprings are different from the parents.
What is incomplete dominance?Incomplete dominance is a type of inheritance where the offspring that is produced is neither like the paternal parent nor like the maternal parent but will show the different intermediate type of trait that is pink in this case. Here , the pink trait is the intermediate trait of the red and the white that is present in both of the parents, and this type of the offsprings shows different trait when they have the heterozygous states. When this two pink flowers cross then there are the production of the one red, one white and two pink flowers.
Hence, the next generation was 100% pink, then it is called as incomplete dominance as the offsprings are different from the parents.
Learn more about the incomplete dominance here.
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pls pls help what does this have to do w science ldk but pls help lol thanks :)
Answer:
Screw on the right with closer thread
Explanation:
The more thread of the screw, the stronger it can hold the screw in place.
when organisms go after the same food source it is called
Answer: a food chain
Explanation:
The following passage explains the relationship between tectonic plates and earthquakes. Which sentence states incorrect information?
Tectonic plates can push together, pull apart, or slide past each other at their boundaries. The edges of tectonic plates are not smooth, so they create friction as they move. When friction is too great for the plates to move, they can become stuck and pressure can build up. An earthquake occurs when pressure that has built up between plates suddenly is released. The buildup of pressure that leads to earthquakes only occurs at plate boundaries.
Answer:
earthquakes occur when the edges suddenly become unstuck and slip along a fault
Explanation:
In the early stages of development, the embryos of dogs, pigs, and humans resemble one
another. This observation suggests that these animals may have
A)a common ancestry.
B)a similar number of chromosomes.
C)a similar habitat requirements.
D)the same blood components.
Answer:
a common ancestry.
Explanation:
_______ is a method of reproduction for some type of bacteria?
Answer:
theres a few answers for this
mitosis or asexual both work
Explanation:
Answer:
binary fission
Explanation:
Bacteria reproduce through a process called binary fission. During binary fission, the chromosome copies itself, forming two genetically identical copies. Then, the cell enlarges and divides into two new daughter cells.
Which idea associated with relative dating helped inspire Charles Darwin's work on evolution?
Answer: The idea that the earth is extremely ancient.
Explanation:
Charles Darwin was a British naturalist who worked on the organic evolution of living organisms and in his books outlined how present-day organisms evolved from earlier, different species.
Evolution is an extremely slow process. It is difficult to obtain direct evidence of evolution in action. However, scientist including Charles Darwin, have from many fields gathered a great deal of indirect evidence that supports the theory of evolution. This evidence comes from many sources which include the FOSSIL RECORDS.
The history of life on earth is recorded in fossils (remains of organisms preserved mainly in earth's sedimentary rocks). Scientist can determine the age of rocks in which fossils occurs by using RELATIVE DATING. This method give a geological time scale, showing earth's age ( as measured by dating it's rocks), and tracing the history of life on it.
Therefore the idea that the earth is extremely ancient is associated with relative dating which has helped inspire Charles Darwin's work as an evidence on evolution.
A student is asked to create models of both prokaryotic and eukaryotic cells. They will use materials to represent the cell membrane,
cytoplasm, DNA, and other internal cell structures. Which structures will be modeled in BOTH cell types? Select ALL that apply )
A) DNA
B) nucleus
C) ribosome
D) mitochondria
E) Golgi apparatus
A) and C)
Trust me :)
Oxygen is found in only 3 of the Earth's 4 spheres
true
false
Answer:
It is false as there is oxygen in all four.
Which is true about factors that influence
weather?
A. Precipitation type depends on air
temperature.
B. The rain shadow effect causes equal
precipitation on both sides of a mountain.
C. As air sinks, it absorbs moisture and forms
rain clouds.
Answer:
B. The rain shadow effect causes equal
precipitation on both sides of a mountain.
Explanation:
A rain shadow is a patch of land that has been forced to become a desert because mountain ... On the other side of the mountain—the rain shadow side—all that precipitation is blocked. ... This cool air cannot hold moisture as well as warm air. Cool air forms clouds, which drop rain and snow, as it rises up a mountain.
Transpiration is the loss of oxygen through a plant’s leaves true or false
Answer:
in plants is responsible for the timing of seasonal activities such as flowering and growth.Transpiration is the loss of OXYGEN through a plant's leaves. False- water. When the guard cells of a leaf lose water, the stomata OPEN.
Explanation:
so the answer is True
A population of African lions share the same habitat. A small group becomes reproductively isolated
from the rest of the population (mating behaviors no longer match). What type of speciation is this?
a. Allopatric speciation
b. Sympatric speciation
C. Parapatric speciation
d. Peripatric speciation
Answer:
The correct answer is - B. sympatric speciation.
Explanation:
The allopatric speciation occurs in the population that is geographically isolated, parapatric speciation takes place due to reproductive isolation however they occupy distinct nice or habitat.
Peripatric speciation is shows resemblance to allopatric speciation in terms of preventing the exchange of genes however they occur in the small peripheral population.
Sympatric produces a reproductive barrier between the small population that shows change to the parent population.
i need the answer quick please thanks!
Answer:
B!!!!!!!!!!!!!!!!!!!!!!
The fossil at point X has been dated to be 65 million years old. What can
relative dating indicate about the fossil at point Y? *
A) The distortion of organism by the fault
B) The type of environment the organism lived in
C) The age of the organism when it died
D) The similar time period in which the organism lived
Answer:
D.The similar time period in which the organism lived