Explanation:
during fertilisation the sperms are drawn up by a suction through the cervix into the uterus where they swim upto the oviduct using their tails although the sperms are millions only one will fertilise the ovum. as the ovum moves down the oviduct, it releases chemical substances which have to be neutralised by those produced by the acrosome before the sperm penetrates the ovum. when the sperm comes into contact with the egg the acrosome bursts open and releases the lytic enzymes which dissolve the egg membranes. Then the acrosome then turns inside out forming a fine filament that is used to penetrate the egg. Hence the head of the sperm enters the ovum, the tail is left outside the egg. the vitelline membrane undergoes a change which stops any other sperm from entering the ovum. once in the cytoplasm the head bursts to release the male nucleus then fuses with the female nucleus to form a diploid zygote
A system is a group of related parts with specific roles that work together to achieve an observed result.
If a body system, such as the digestive system, fails to work properly, what would happen to the organism?
A. The other organ systems would compensate for the defective system.
B. The organism would immediately evolve so the defective system is no longer necessary.
C. The defective system would regenerate into a new, working system.
D. The organism would not be able to function properly.
Answer:
D
Explanation:
If you had no digestive system, you would have no ability to get nutrients and sugars in food, and you would die.
Where does the energy go?
Answer: energy can travel in the form of electromagnetic waves, heat, light, radio and gamma rays. your body is using energy. Energy is always flowing and changing forms.
Explanation:
What allows us to categorize rocks into the three rock types: igneous, sedimentary and metamorphic? Magma or weathering Involvement of sediment Whether or not the rock melts Process of formation
Answer: process of formation
Explanation:
it should be right. if not then choose involvement of sediment
....... is the wall which separates right and left side of the heart .
Answer:
septum
Explanation:
Answer:
The septum is the wall which separates the right and left side of the heart.
Which of the following would most likely mark the beginning of a new era?
A. The discovery of a new species of fish
B. The passage of a million years
C. An increase in the variety of mammals on Earth
D. The extinction of mammals and the rise of insects as the dominant species
B. Anwar
global warming has a bearing on the planet's biological evolution.
Evolution is the million years old process, which has led to the adaptation and development of a variety of species. The new era of the Earth can be marked by the extinction of mammals and the rise of insects.
The correct option is:
Option D. The extinction of mammals and the rise of insects as the dominant species
The Cretaceous period was ended around 66 million years ago. The sudden asteroid attack on the Earth killed the mass population of mammals and most of all the other species.
Somehow, few of the mammals survived and thrived, which made them dominant across the planet.
In the future, the million years or the hitting of an asteroid can mark the new beginning of an era. The asteroid hitting can lead to the extinction of organisms present on the Earth. Some of the species or insects can survive hypothetically, which can represent the beginning of the new era.
Therefore, the correct option is D.
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Put the following mitosis and cytokinesis images in order.
The order of mitosis and cytokinesis given in images are 3, 2, 1, 4, and 5.
What do you mean by Cytokinesis?Cytokinesis may be defined as the process of cell division by which one cell physically divides into two daughter cells.
The four stages of mitosis are known as prophase, metaphase, anaphase, and telophase. After the completion of mitosis, a cell undergoes to cytokinesis where a cell divides into two daughter cells.
Therefore, the order of mitosis and cytokinesis given in images are 3, 2, 1, 4, and 5.
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in a population of wolves, a single alpha male father’s most of the puppies. this is evidence of
Answer:
Sexual selection
Explanation:
because the alpha male has the best traits, and is selected for them. They pass those traits onto the pups. They are selected by females because of their sexually appealing features.
Answer:
It’s C: Dominance hierarchy
Explanation:
Because usatestprep said so
By studying coleoptiles of oat seedlings, Charles and Francis Darwin were the first to discover evidence of plant hormones. Explain what treatment was applied to the different seedlings, and what the result was.
Answer:
For the animal structure, see Down feather. Grass seedlings, 150-minute time lapse. Monocot (left) and dicot (right) seedlings. A seedling is a young plant sporophyte developing out of a plant embryo from a seed. Seedling They will open their cotyledons and turn green when treated with light.
Explanation:
Now, set the mass of both balls to be equal. Increase the distance between them by pulling one of the balls away from the other. To pull a ball away, click on the ball and drag it. What happens to the force arrows between the two balls? What does this mean in terms of gravity?
Answer:
it shows that both balls are using push and pull
Explanation:
subscribe to my channel
Answer:
Explanation:
When the distance between the balls increases, the size of the arrows decreases. This shows that the gravitational pull between the balls also decreases.
The statement "all objects in the universe attract each other," is an example of which of the following
Please help asap!
Explain why a rock pocket mouse’s color influences its overall fitness. Remember that “fitness” is defined by an organism’s ability to survive and produce offspring in its environment.
Answer:
On the tan sand more light colored mice will survive because they blend in and on the dark lava rock more dark colored mice will survive and the allele for dark fur will be passed on to their offspring.
Explanation:
Which of the following is an example of an advantageous trait? *
A. A black moth that lives near an industrial site that produces a lot of soot
B. A cheetah that can run faster than the rest of his pack
C. A bird with a beak that can crack nuts in an environment where nuts are the main food source
D. A white rabbit that lives in a snow covered environment
E. All of these options
Answer:
[tex]\boxed {\boxed {\sf E. \ All \ of \ these \ options}}[/tex]
Explanation:
Let's examine each answer choice.
A: This is an advantageous trait. The soot will cover objects and make them appear black, providing places for the black moth to be camouflaged.
B: This is another advantageous trait. If the cheetah can run faster, it can get to food sources faster and run away from predators.
C: If there is an abundance of nuts, it's an advantage to be able to crack them and eat them.
D: The snow provides a habitat that the rabbit can be camouflaged in. This is another advantageous trait.
So, every answer choice was a good example of an advantageous trait. That makes the best answer choice E. all of these options.
Answer:
E
Explanation:
How could a change in the carbon cycle lead to a change in the water cycle? (Give me an example of an increase in one process leading to an increase or decrease in the process of the other cycle)
Answer:
Higher rates of carbon fixation lead to increased respiration, energy production and CO2 + H2O excretion.
Explanation:
Inorganic carbon is fixed into high-energy polysaccharides by producers during photosynthesis and used by consumers in respiration to produce fuel, where it is produced as a waste product, along with water.
In photsynthesis...
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2 Carbon Dioxide + Water + Light Glucose + OxygenIn respiration..
.C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP glucose+ oxygen → carbon dioxide+ water+ energyThus, changes in photosynthesis affect the ability of other organisms to respire and produce water. More fixation directly leads to increased respiration, production of ATP, and CO2 + H2O excretion.
Gene therapy has been used to treat and cure cystic fibrosis. Cystic fibrosis is caused by a in a single gene.
Answer:
I believe it is mutation.
Answer:
Mutation
Explanation:
order of assembly in the cellular factory?
Answer:
DNA- RNA- Protein
Explanation:
What do all cells need to carry out life processes
Answer:
The cell is the fundamental unit of life. Cells have basic needs for survival. They use energy, consume materials, require water, eliminate waste, and reproduce.
Explanation:
i do not have one hope this helps
What is the relationship between photosynthesis and cellular respiration?
Answer:
The one you have selected in the answer.
The both are relient of each other, animals make carbon dioxide and plants use that and they give off oxygen as a byproduct in a never ending cycle.
Can you answer these 2 questions? plsssssss
1. Explain how the Coriolis effect affects ocean current movements in the northern and
southern hemispheres in your own words.
2. Infer why upwellings are economically important in your own words.
Answer:
Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect. Click the image for a larger view. Coastal currents are affected by local winds.
Upwelling is the process that brings deeper water to the surface, and its major significance is that it brings nutrient -rich deep water to the nutrient-deprived surface, stimulating primary production
Explanation:
If a gamete contains 24 chromosomes, how many chromosomes would the somatic cells contain?
Answer:
46 chromosomes are present in somatic cell
how does the molecular structure of the enzyme change during "cold denaturation"
Answer:
nobody know
Explanation:
absolutely no body has an idea
California’s rice fields are _______.
a.
visited by migrating waterfowl
b.
flooded during the summer
c.
a source of wild bird meat
d.
all of the above
Answer:
A. visited by migrating waterfowl
Which of the following kinds of organisms do photosynthesis? Select all that apply.
Answer:
Plants, algae, cyanobacteria, and etc.
Explanation:
"Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies most of the energy necessary for life on Earth."
Plants, Algae, and some bacteria kinds of organisms do photosynthesis. So, the correct options are A, D and F.
What is Photosynthesis?The word “photosynthesis” is derived from the two words photo means “light” and synthesis means, “combining together.” which means “combining together with the help of light.”
Photosynthesis is defined as the process by which light energy is converted into chemical energy, which is then used to fuel cellular activities where chemical energy is stored in the form of sugars. Which are made of water and carbon dioxide.
Photosynthesis can also applies to other organisms besides green plants such as several prokaryotes such as cyanobacteria, purple bacteria and green sulfur bacteria.
Thus, Plants, Algae, and some bacteria kinds of organisms do photosynthesis. So, the correct options are A, D and F.
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Your question is incomplete, most probably the complete question is:
Which of the following kinds of organisms so photosynthesis?
Plants, Fungi, Animals, Algae, All bacteria, Some bacteria.
Can u help me please
Moving up the food chain, the energy available to the organisms decreases due to metabolic heat. (You can add the second law of thermodynamics into it, if you want)
For example, in the rules of tens, the plants start with 100% of the energy but the fi red t level consumers gain 90% of the energy due to the fact energy transfers through heat.
Because of the change is available energy, consumers at the higher levels of the food chain are forced to hunt larger amounts of prey to sub stain themselves.
Which of the following statements about water are true?
Liquid water is less dense than solid water
Solid water floats on liquid water
O The specific heat of water is higher than other substances
O Water is necessary for the survival of living things
Answer: The specific heat of water is higher than other substances
Explanation:
How does Kim’s red blood cell appear different from the patient’s? Why is this the case?
Many bacteria and fungi are important in the environment because they
return energy to the environment, making it available for plants
recycle nutrients, making them available for other organisms
O produce glucose through the process of respiration
O reverse the flow of energy in the ecosystem
Answer:
they are important because they recycle nutrients, making them available for other organisms
Explanation:
they are natures recyclers and return nutrients back into the soil
Many bacteria and fungi are important in the environment because they recycle nutrients, making them available for other organisms.
DECOMPOSERS:
Based on their role in the recycling of energy and nutrients in the environment, living organisms can be grouped as either producers, consumers or decomposers. Producers are organisms capable of synthesizing food on their own either by using sunlight (photosynthesis) or chemicals (chemosynthesis). They create the energy that is transferred in an ecosystem. Examples are green plants, algae etc. Consumers are organisms that depend on other organisms for their energy source or nutrients. Example include animals etc. Decomposers are organisms that degrade or breakdown dead organic matter, hence, returning nutrients to the soil to make them available for other organisms. Examples are some Bacteria, Fungi etc.Learn more: https://brainly.com/question/16599318?referrer=searchResults
A dilute solution has a
concentration of
molecules
O A. high, water
B. high, dissolved
C. low, water
D. equal, water and ion
It's Letter A.
Explanation:know why? it because molecules has a Higher concentration of water molecules.
When a solution is dilluted, more water is added to make the solution less the high concentrated!Answer:
Dilute solutions have a high concentration of water molecules.
Select the answer choice with the increasing levels of organizations.
Answer:
The answer is S.
What allows us to see a full moon from Earth?
1.The moon orbits around Earth every 29 days.
2.Light from the sun is not strong enough to illuminate the moon.
3.The side of the moon illuminated from the sun is not facing Earth.
4.The side of the moon illuminated by the sun is facing Earth •Science•
Answer:
4. The side of the moon illuminated by the sun is facing Earth.
Explanation:
When the illuminated side of the moon faces towards Earth, it allows us to see a full moon.
The advantage of using a scale model?
Answer:
H. It represents the actual size but it is big enough for the eye to see making it extrememly accurate
Explanation:
Answer:
the answer for the question is E