Answer:
Cytoskeleton and cell wall
What is the correct definition of a gene?
Year after year, Xavier raises a vegetable garden in the same plot of soil. He observes that the plants grow less abundantly from one year to the next, and they produce fewer vegetables. Which of these processes could help explain Xavier's observations?
A. the rate at which soil bacteria perform photosynthesis
B. the rate at which soil bacteria perform denitrification
C. the rate at which soil bacteria perform nitrogen fixation
D. the rate at which soil bacteria perform chemosythesis
Answer:
C. The rate at which soil bacteria perform nitrogen fixation
Explanation:
Since Xavier is raising vegetables in the same spot year after year it is reasonable to expect that the plants would deplete the soil of its resources. Since the soil doesn't have enough minerals and not enough time for the bacteria to perform nitrogen fixation the plants don't grow at the same rate and numbers that they used to at the beginning.
RIGHT ANSWER GETS BRAINLIEST
Answer:
analyze the results
Explanation:
Answer:
Free point :D
Explanation:
Explain in your own words (as if describing to me) how convection works to move plates.
Answer:
Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust
Explanation:
Protists are grouped together because they all look similar.
True
False
Answer:
True
Explanation:
what molecules from proteins when linked together with covalent bonds
Answer:
Amino Acids
Explanation:
they link with each other through means of peptide bonds and as a result form proteins
Which of the following engulfs pathogens or an invading virus or bacteria
-t cell
-b cell
-macrophage
-red blood cell
Answer:
Macrophage
Explanation:
They do this through a process called phagocytosis
The following engulfs pathogens or an invading virus or bacteria - macrophage.
Macrophagea type of white blood cell of the immune systemengulfs and digests pathogens, an invading virus or bacteriait recognizes anything that does not have, on its surface, proteins that are specific to healthy body cells.surrounds and kills microorganisms, removes dead cells, and stimulates the action of other immune system cells.Thus, The following engulfs pathogens or an invading virus or bacteria - macrophage.
Learn more:
https://brainly.com/question/1474358
Organisms that complete the final breakdown and recycling of organic materials from
the remains of all organisms are the
detritivores
omnivores
decomposers
O carnivores
Answer:
decomposers
Explanation:
These are heterotrophic organisms that feed on dead animals and plants, secretions, or discarded parts of living beings, that is, organic matter.
And they break it down into inorganic.
Thus, inorganic substances that can be reused in the process of photosynthesis are returned, recycled, to nature.
What is the PURPOSE of meiosis?
A. to make sperm & egg
B. to make food from sunlight
C. to make new boy cells
D. to make fertilized eggs
Answer:
to make sperm& egg
Explanation:
to make sperm& egg
How many genders are there?
Answer:
2 only
Explanation:
Answer:
there are 2 genders: the male and female
Mitosis division occurs in.....????
-prokaryote
-body cell
-all of the mentioned
-sex cell
A _____ is the structure that contains the DNA of the cell.
A. Vacuole
B. Chromosome
C. Centromere
D. Centrosome
E. Centriole
The answer is chromosome
The chromosome is densly packed DNA.
1. Nitrogen fixation: Nitrogen fixation occurs when (a) ___________ converts N2 gas into (b) _________________________ that living things can take up.
2. Ammonification: In this step, bacteria in soil or fungi will convert nitrogen into _____________________________
3. Nitrification: A 2-step process:
Step 1: Soil bacteria converts (a)_______________________ into (b)___________________
Step 2: Soil bacteria then convert nitrite ions into (c)_____________________________
4. Denitrification: In this process (a)__________________________ are converted to (b)_________________ gas, which are then released to the atmosphere.
5. Assimilation: This occurs when ___________________________________________.
Answer:
Nitrogen fixation occur when nitrogenase convert N2 into ammonia gas that living thing can take up.
Ammonification bacteria in soil or fungi will convert nitrogen into ammonia compound.
3. Nitrification.
Soil bacteria converts ammonia to nitrite.
Soil bacteria then convert nitrite ions into nitrate.
4. Denitrification in this process , nitrate is converted to nitrogen gas, which are then released to the atmosphere
Assimilation occurs when minerals and vitamins are absorbed in the food by the intestine.
Explanation:
Nitrogen fixation is the process where nitrogen is fixed and made available by living things in which nitrogenase convert nitrogen to ammonia.
Ammonification is the process by which organic nitrogen is converted to ammonia compounds by bacteria and fungi
Nitrification is the process where nitrifying bacteria convert ammonia to nitrite and then nitrite to nitrate.
Denitrification is the process where nitrate is reduced or converted to nitrogen gas.
Assimilation is the process of absorbing vitamins and minerals from food by the intestine.
If an organism is said to reproduce asexually, how would the offspring resemble the parent organism?
Answer:
It would resemble it through its genetic features.
Explanation:
Answer: Asexual reproduction produces offspring that are genetically identical to the parent, whereas sexual reproduction produces a similar, but genetically unique offspring. In sexual reproduction, meiosis produces haploid gametes that fuse during fertilization to produce a diploid zygote (Figure below).
Explanation:
Chemicals used in chemotherapy treatments to fight cancer can also harm cells in hair follicles and bone marrow.
What characteristic do these cels most likely share with cancerous cells?
O They form tumors.
O They spread through the blood.
• They divide rapidly.
O They contain a mutation.
A
Answer:
They divide rapidly
Explanation:
Some normal cells such as hair follicles cells, mouth cells, digestive tract cells, and bone marrow cells divide rapidly. In mammalians, hair follicle cells are cells localized in the skin, specifically in the dermal layer of the skin. In this region, epidermal cells that form the root of the hair divide rapidly by interacting with neuropeptides, hormones, and immune cells. On the other hand, the bone marrow is a spongy tissue found in bones that contain stem cells (which also divide rapidly). In consequence, it is well-known that high-dose chemotherapy treatments may damage these types of cells.
research on obesity rates and genetically based skin color illustrate different types of biological change because
Explanation:
research on obesity rates and genetically based skin color illustrate different types of biological change because obesity rates demonstrate an evoked cultural response; genetically based skin color does not.
According to scientists, all of the bodies in the universe came from a rotating cloud of gases and dust about
billion years ago.
O 3.5
O 2.5
O 4.5
O 1.2
It's either 3.5 or 1.2
There would be more evidence spread out through space to be noticed by scientists and it seems like a stretch to go as far back as 4 billion years ago.
(I mean really? That much before the DINOSOURS died? I don't think so)
◕‿◕
Hope this helps
Miri
8. Why did Ofelia and Marcus keep everything the same for the plants except for the type of fertilizers?
a. They didn't know how to make an experiment.
b. They included many different independent variables.
c. They used constants/controlled varjables so only the independent variable was different.
d. They included many different dependent variables.
Answer:
b. They included many different dependent variables.
Explanation:
Changing something that does not matter is called a dependent variable.
also to me at least that's the only one that makes sense
HURRY RUNNING OUT OF TIME FIRST CORRECT ANSWER GETS A CROWN
Purple flowers are dominant over white flowers. The parent generation includes two heterozygous parents.
What are the possible phenotypes of these parents’ offspring?
3 purple and 1 white
3 white and 1 purple
1 purple, 2 lilac, and 1 white
1 white, 2 speckled, 1 purple
Answer:
3 purple and 1 white (i think)
Answer:
3 purple and 1 white.
Explanation: Took the exam, got 100
while mutation is random, natural selection is not. In your own words, explain how this is possible
Answer:
Mutation is a alteration in the DNA sequence in a gene during cell divison iwhere gene is coded mitakeny or due to the error. Mutatio is a random process as it can not be determind or known befor bthechange in sequence what gene or DNA would be effected by it or what genes would be transfer from the parents.
Natural selection is a process where some of the traits that are helpful in the surviving and increasing the number of individuals in a population and transfer from one generation to other according the adaption and change over the long timeline. Thus, it is not random and based on the traits that are helpful in a environment or for the survival of
What of the following happens first?
Answer:
you should give options too
Answer:
it is c
Explanation:
because it is scientificly proven
Part B - Threats to biodiversity Three types of threats to biodiversity are: habitat loss and fragmentation the introduction of exotic, or non-native, species overexploitation, or overharvesting
Complete question:
Three types of threats to biodiversity are:
habitat loss and fragmentation the introduction of exotic, or non-native, species overexploitation, or overharvesting.
Determine the type of threat that each of the following statements describes.
1. a wetland is drained to make room for a housing development.
2. south american rodents called nutria eat wetland plants and cause bank erosion in the united states.
3. some fishing nets damage the seafloor.
4. melaleuca trees from australia displace native wetland vegetation in florida.
5. small rainforest remnants have less diversity than larger rainforest remnants.
6. cod are caught faster than they can reproduce.
7. florida panthers were geographically cut off from other panthers about 100 years ago.
8. wild american ginseng populations have declined as a result of increased demand for the roots.
Answer:
1. a wetland is drained to make room for a housing development.--> habitat loss and fragmentation
2. south american rodents called nutria eat wetland plants and cause bank erosion in the united states.--> introduction of exotic, or non-native, species
3. some fishing nets damage the seafloor.
--> overexploitation, or overharvesting
4. melaleuca trees from australia displace native wetland vegetation in florida.
--> introduction of exotic, or non-native, species
5. small rainforest remnants have less diversity than larger rainforest remnants.
-->habitat loss and fragmentation
6. cod are caught faster than they can reproduce.
--> overexploitation, or overharvesting
7. florida panthers were geographically cut off from other panthers about 100 years ago.
--> habitat loss and fragmentation
8. wild american ginseng populations have declined as a result of increased demand for the roots.--> overexploitation, or overharvesting
Explanation:
Habitat loss and fragmentation. Refers to the effects of human activities and their expansion in space as populations get bigger and economic activities increase. The expansion of agriculture and cattle industry limits are one of the most important activities responsible for habitat fragmentation. In the last few years, the real estate industry took an important role in habitat fragmentation and alteration. Following this idea of "progress", government and private enterprises alter the natural and pristine environment and open new areas destined for different activities, in most cases contaminating the area. A progressive and continuous change occurs in the natural environment. Following the reduction of habitat, there is a decrease in the size of populations of the affected native species. The species richness decreases, and there is no connection or paths among isolated areas.The introduction of exotic, or non-native, species. Refers to biological invasions. New species that establish in a new area far or out of their original distribution range. These species might be considered exotic or invasive, according to their reproductive rate, population growth, and interaction with native species. Once established, the introduced species expand their distribution from the first invaded spot and overgrows. It is very common for these species to start new populations in the new area, where they have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, better nitches-, and these factors favor their establishment. As they expand, they compete with other species for resources. In the case of plants, these resources are water, place, radiation, exposure, among others. Species are considered to be invasive because of their reproductive rate, population growth, and interaction with native species, which provokes huge damages in the native ecosystems. Biologic invasions are natural processes, that occur in small groups of individuals that can expand to other ecosystems, and the appearing or despairing of barriers promotes their expansion. But these biologic invasions have accelerated by human beings, referring to this as "human-assisted invasions". These are the cases in which men transport species from one place to the other for different uses or purposes. It is very common for these species to scape and start new populations in the new area, where they have less environmental pressure -fewer predators, more resources, better nitches- than in their origin area, which favors their establishment. Overexploitation, or overharvesting. Refers to the unlimited use of resources. People, acting by their own needs or interests, may exceed the harvesting, affecting the resource population and, therefore, other users. Overexploitation might lead to the extinction of the species that are taken in excess and to the decrease in the size of other organism´s populations that also depend on those resources.I need help please?!!!!!
Answer:
a Bicycle and Skateboard
Drag each tile to the correct box.
Sort the types of energy according to the order in which they move through this system:
Water stored in dams falls freely with the force to make a turbine move. The turbine moves and produces electricity. This electric energy is
supplied to homes. At home, we use electricity for heating, cooling, and lighting.
Put these in order:
Electrical energy
Light energy
Potential energy
Kinetic energy
Answer:
Electrical energy > kinetic energy > light energy > potential energy
Explanation:
Has plasticity allowing this layer to be flexible
A. Asthenosphere
B. Mantle
C. Lithosphere
D. Inner core
Answer:
C?
Explanation:
1. What is Ecology?
a. The study of Earth's Mantle
b. The study of relationships between living things and their environment
C. The study of humans and their impact on Earth
d. The study of plants
Answer:
B. The study of relationships between living things and their environment
Explanation:
You can tell the age of a skeleton by looking at:
O1) the length of the femur
O2) the shape of the pelvis
O 3) the number of fused bones
O4) the color of the bones
Answer:
Calculating the age of a skeleton can be done by looking at the number of fused bones (option 3).
Explanation:
The calculation of skeleton bone age takes into account the complete ossification of bones, which occurs at various stages of human development.
In childhood, the epiphyses or ends of long bones are not completely ossified but are formed by cartilage, due to the process of growth. When development is achieved, the growth nuclei and cartilage disappear.
Bone age is a reliable parameter for calculating chronological age, as they are quite approximate.
The other options are not correct because:
1. The length of the femur is useful for calculating height.
2. The shape of the pelvis helps to differentiate the sex.
4. The color of the bones is not a useful parameter to calculate the age of the skeleton.
if some can help me with my biology final the whole 25
Answer:
add the answers if you dont know
Explanation:
Answer:
KC is looking at cells in biology class, but he doesn't know where they came from. He sees that the cells under his microscope have cell walls and chloroplasts. Therefore, KC is likely observing cell from:
A leaf that got blown onto the floor.
Plant cells are the only cells w/ chloroplast!
Explanation:
pick me as the brainliest
Cellular respiration is the chemical basis of how cells release energy from foods. When you eat an apple, your cells extract energy. The text below explains how cells use cellular respiration to extract energy from an apple. Choose the parts of the sentence that are incorrect.
The apple first enters the digestive tract through the mouth, where digestion begins with chewing. Enzymes begin to break down the apple in the mouth. From the digestive tract, the glucose from the digested apple is absorbed into the bloodstream, where it is brought to cells throughout the body. In the chloroplast, the glucose begins cellular respiration. The molecules react with carbon dioxide to release energy. Oxygen is produced as waste
Answer:
chloroplast is def wrong
Explanation:
it is mitochondria
How is the space shuttle able to leave earth's surface?
PLEASE TELL ME IS ITS A, B, C, OR D
Answer: A
Explanation:
The shuttle needs to go up in order to get into space, this means they need to create a force greater then gravity because if they didn’t the shuttle wouldn’t be able to accelerate upwards
The space shuttle is able to leave Earth's surface when the space shuttle engine creates an upward force that is greater than downward force of gravity.
The force of gravity pulls every towards the center of the Earth, to overcome this force of gravity the space shuttle will create an upward force that is greater than force of gravity.
The upward force created by the space shuttle engine must overcome the downward force of gravity on the space shuttle.
To overcome the force of gravity, the space shuttle engine speeds upwards with a velocity known as escape velocity.
Thus, we can conclude that the space shuttle is able to leave Earth's surface when the space shuttle engine creates an upward force that is greater than downward force of gravity.
Learn more about escape velocity here:https://brainly.com/question/24145520
