Answer:
Sperm have a well-protected head and a motor to help them travel.
Explanation:
Gametes are sexual cells. Organisms make use of gametes to sexually reproduce themselves. Male organisms produce gametes called SPERM while feale organisms produce gametes called EGG. Although both of these gametes function to sexually reproduce the organism that produces them, they have different morphological characteristics that supports their physiological function.
- The sperm cell is made up of two major parts namely: the head and the tail. The head of the sperm cell contains the nucleus, which houses the genetic material of the cell i.e. DNA. For this reason, the head is well protected. Also, the sperm contains a tail region, which is actually a flagellum that enables it to be motile i.e swim through the female reproductive part. The flagellum contains a structure called AXONEME, which is referred to as the MOTOR of the sperm cell.
the gypsy moth is a pest species whose larvae feed on the leaves of hardwood trees. the population size of gypsy moths naturally changes in cycles. as a result, the amount of defoliation caused by the moths also fluctuates. which statement describes how the change in size of the gypsy moth population from 1972 to 1981 most likely affected the ecosystems represented by the maps?
Answer:
where are the choices?
Explanation:
i will mark brainliest
What type of population growth does the graph show? How do you know?
Answer:
The graph shows a steady increase then a small decline in the amount of yeast present in the 20-hour period.
Explanation:
Because it goes up steadily then it peaks and seems like its going to go down even.
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Can anyone help? I’ll give brainliest!! :)
Describe the types of matter and energy that are transferred or converted during each of these processes (photosynthesis and cellular respiration). Make sure to specify the process involved with each transformation or conversion.
Answer:
plasma gun and kfc
Explanation:
What cell organelle conducts cell respiration
Answer: Mitochondria
Explanation:
name the animals that the small fish eat
Answer:
Some creatures, including cnidarians, octopuses, squid, spiders, sharks, cetaceans, grizzly bears, jaguars, wolves, Sea lion, snakes, turtles, and sea gulls, may have fish as significant if not dominant portions of their diets. The ecological effects of piscivores can extend to other food chains.
Explanation:
Which statement best describes the movement of Earth’s plates?
A. The plates moved for millions of years but have now stopped
B. There is no evidence that plates ever moved.
C. The plates stayed in one place for millions of years but are moving now.
D. The plates are constantly moving.
I would say the plates are constantly moving.
Answer:
The answer is D
Explanation:
When plates were separated they have moves to different areas but they are moving cause if the water waves and it moves. According to this earthquakes and other things happen since movement is still going on
How can mass be modeled?????
Explanation:
maybe if Density=Mass/Volume can we say that Mass=Density*Volume?
Chronic traumatic encephalopathy (CTE) is caused by a single blow to the head.
can anyone help me on this questions please
Answer:
beryllium element
Explanation:
I hope it will help you
True or False: The Ocean looks blue because it absorbs blue wavelengths from the sky more slowly than it does the other colors. which means it only appears blue to us when in reality it is every color
Answer:
true-ish
Explanation:
the blue of the ocean is a reflection of the sky which is why you see the reflection of the clouds if you look into the ocean. therfore the water does appear blue. it is not every color though.for example you poor a glass of water. it is clear not every color.
1. Explain how immunizations work to protect the body against pathogens and antigens. Refer to B-cells and T-cells in your answer. Discuss how and why science would need to find a way to discourage thymus atrophy if human life is ever to expand beyond around 120 years.
2. Describe the sources of antibodies in humans from pre-birth to old age, including how our bodies change over time as we age.
3. You suspect a patient is suffering from a systemic inflammatory response. What two things could you check relatively easily to detect signs of such a response, and which one of those two symptoms may on its own require emergency intervention?
4. A running joke among viewers of the medical drama House was that “it’s never lupus,” even though it frequently came up as a possible diagnosis to the patient-of-the-week’s symptoms. Why is lupus sometimes a difficult disease to diagnose but would often come up as doctors discuss a patient’s symptoms? What is the treatment regimen for Lupus?
5. Compare and contrast passive and active immunity, covering at least four functions, components, or mechanisms related to immune response. Include at least one way in which they are similar and one way in which they are different.
!!!WILL MAKE BRAINLIEST AND GIVE OUT ALL MY POINTS TO WHOEVER ANSWERS THESE QUESTIONS CORRECTLY!!! PLEASE HELP ME
In this exercise we have to use the knowledge of immunization, in this way we will be able to answer the questions on this topic. So we find that:
1)The invulnerable system, that happen integrated into all concerning living organisms arrangement, protects the body against contamination and different external and within insults by make use of three distinct tier, contingent upon the nature of the danger.
2)Neonates happen physiologically immunodeficient, signification both their native and adjusting immunological reaction are considerably hold in check. In fact, many of the infections gained without special exertion by neonates exist bring about by low-resentment living thing like staphylococcus and pseudomonas.
3)Clinically, the Systemic Inflammatory Response Syndrome (SIRS) exist label by two or more sign of illness or problem containing state of high temperature or agitation.
4) If human growth search out at any time extend beyond 120 old age, methodical study of part of material world give need to guide physically to discourage organ meat disintegration.
5)Active exemption occurs when our own invulnerable method is responsible for guard from harm us from a bacterium. Passive exemption occurs when we exist protected from a bacterium by exemption gained from other person.
In this way we can answer immunization questions such as:
1)The invulnerable system, that happen integrated into all concerning living organisms arrangement, protects the body against contamination and different external and within insults by make use of three distinct tier, contingent upon the nature of the danger: concerning the body and biochemical hurdle, abundant different invulnerable container, and antibodies.
2)Neonates happen physiologically immunodeficient, signification both their native and adjusting immunological reaction are considerably hold in check. Once innate, a child’s immune scheme responds genially to protein antigens and less so to glycoproteins and polysaccharides.
3) Clinically, the Systemic Inflammatory Response Syndrome (SIRS) exist label by two or more sign of illness or problem containing state of high temperature or agitation or hypothermia, heart attack, tachypnoea and change fashionable red body fluid leucocyte count.
4)One habit the physique protects against pathogens and antigens is through humoral exemption. White blood cells produce antibodies that flow through the material’s red body fluid and lymph, also known as the bulk’s humors.
They follow and devastate the pathogens fashionable the humoral systems. T-smallest living organism enhance supply instructions to label a different type of bacterium or irritant. If the invulnerable system doesn’t test T-smallest living organism to be in a dispute or fight a bacterium or antigen, it will initiate something B-small room. These small room identify the pathogen and demolish it through the creating of goods of an antitoxin. They not only produce one type of microscopic organism, but they bear the skill to produce antibodies that exist required to devastate particular ailment.They use up their data banks try to find the often causing illness that will fit accompanying the trespasser, and if one doesn’t be living, they will produce individual over time.If human growth search out at any time extend beyond 120 old age, methodical study of part of material world give need to guide physically to discourage organ meat disintegration.
5)Active exemption occurs when our own invulnerable method is responsible for guard from harm us from a bacterium. Passive exemption occurs when we exist protected from a bacterium by exemption gained from other person.
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Having extra fingers (polydactyly) is a dominant trait. Having just 10 fingers is a recessive trait. How can you explain that almost (if not everyone) you know has the "normal" number of fingers? Look at the list of dominant vs recessive genes and give another example of a recessive gene being more common than a dominant one and explain why you think that dominance or recessiveness is not related to how often a trait occurs in a population
Answer:
Explanation:
Polydactyly is a mutation, it is a sudden change that can be heritable that occurs.
Because mutation does not always occur the chances of having large number of people having the traits in a dominant form is low, hence more people will have normal finger.
Dominance is not the number of time a traits occur, it is the ability of a allele to be expressed over another. The expressed allele i.e that is seen in the phenotype of such individual is the dominant allele while recessive allele are the one whose effect are mask.
Having a round eye is an example of a recessive traits that people posses but are expressed in some individual.
Which of these statements about enzymes is true? Select
all correct answers.
a. Enzymes can help break chemical bonds.
b. Enzymes always change their shape when they bind
to a molecule.
c. Enzymes can break down a variety of different
substances.
d. An enzyme’s shape is related to the shape of the
substrate it binds to.
Answer:
b. Enzymes always change their shape when they bind to a molecule.
d. An enzyme’s shape is related to the shape of the substrate it binds to.
Explanation:
Enzymes are proteins that are secreted by special cells in living organisms. They are the organic catalysts of biochemical reactions.
The role of the enzyme in the enzyme catalyzed reaction is to bring reactants together on its surface so as to have better interactions.
Enzymes have the capability to fit the substrate into an induced fit position.
The process by which enzymes change shape in a reaction is called the induced fit.
This way an enzyme holds the substrate tightly for the reactions to occur.
Please help! I’m so stuck in bio...
Answer:
3,5,6,4,1,2
Explanation:
3.interphase is the first phase of the cell cycle and the longest where the cell grows and prepares for mitosis through dna replication
5.chromosomes form in the first phase of mitosis, prophase
6.chromosomes line up along the equator during the second phase of mitosis, metaphase
4 sister chromatids separate during anaphase
1 two new nuclei form during telphase
2 cytokinesis is the separation of cytoplasm , resulting in two daughter cells
A leaf cell has a very low concentration of salt. What would happen to a leaf cell if it were placed in a highly concentrated salt solution?
A) The cell would lose water and the membrane would shrink slightly
B) The cell would gain water and break the cell wall
C) The cell would gain water and stretch the cell wall
D) The cell would lose water and the membrane would collapse
Answer: D if I am correct
Answer:
D) The cell would lose water and the membrane would collapse
Explanation:
Which of the following identifies a natural process and correctly explains how it contributes to the earth’s pollution?
PLEASE HELP
Replacing missing or damaged genes to correct a genetic disorder is known as:
O selective breeding
O genetic engineering
O natural selection
O gene therapy
Answer:
Gene therapy would be your answer :D
If John has12apples and eats 10 gown many is left
Answer:
Two
Explanation:
Answer:
two apples are left because 12 minus 10 is 2
look at pic n answer please
Answer:
I think B hopefully thats the asnwer
Which have more energy: 10 starch or 10 glucose molecules. Explain
Answer:
10 starch
Explanation:
Starch is a polycharraide and is made up of glucose. Glucose is a monocharraide and is the simplest sugar. So if we take 10 glucose molecules and 10 starch molecules the starch has more energy since it's more complex than glucose.
how does energy flow in this terrarium in terms of photosynthesis? I WILL MARK BRAINLIEST
The energy flows from the plant to the snail. The snail eats the plaint as well as consume oxygen from it too. From there the snail produces body heat and even carbon dioxide. Then the process repeats. Photosynthesis in the plant requires water, sunlight, and carbon dioxide; the snail eats the plant/ intakes oxygen etc. Hope that helps. :)
if you need clarification please comment I'll help you out.
Which of the following shows the correct sequence of the cell cycle
Answer:
C is the correct answer. G1, S, G2 are the interphase, then comes mitosis and then cytokinesis
Fill in the blanks to complete each statement about mountains.
Several mountains together form a mountain ____. A few of these combined form a mountain system. Several systems combined form a mountain ___, which can stretch thousands of miles in length.
Answer:
Fill in the blanks to complete each statement about mountains.
Several mountains together form a mountain
range. A few of these combined form a mountain system. Several systems combined form a mountain
2. belt
, which can stretch thousands of miles in length.
Explanation:
Answer: range and belt
Explanation: i hope this helps :)
which molecule would dissolve faster cellulose hemoglobin, glucose, or amylose
Answer:
just find the one that has the mosy collisions to increase the rate of dissolving
HELP NEED THIS ASAP!! I WILL GIVE YOU BRAINLYEST!!
What is the simplest level of organization?
Answer: Atoms
Explanation:
hope this helps
What is a base-pair substitution?
(gene mutation)
Answer:
noun, plural: base pair substitutions. A type of mutation involving replacement or substitution of a single nucleotide base with another in DNA or RNA molecule. Supplement. This type of mutation occurring in noncoding sequences often does not result in an altered amino acid sequence during translation.
Explanation:
hope that helps:)
Describe the effect on animal cells of the cells do not contain enough water
Answer:
Animal cells also take in and lose water by osmosis. They do not have a cell wall, so will change size and shape when put into solutions that are at a different concentration to the cell contents. Red blood cells lose water and shrink in a concentrated solution. They swell and burst in a solution that is too dilute.
Help me PLEASE! Choose one answer! First one to answer get Brainliest!
5.) A type of fossil that traces an organism’s existence or behavior such as a nest, footprints, or droppings.
A.) Body Fossil
B.) Trace Fossil
C.) Petrified Fossil
D.) Cast
Answer:
B
Explanation:
Trace fossil because it tracks the activities and behavior of the past life. the fossils are different from body fossils that preserve the actual remains of the body such as shells or bones.
In the experiment to obtain pure water from ink , what colour will be steam be ?
Answer:
It should be just normal cloudy if the boiling point of water is less compared to ink if not then blue cause its evaporating.
Explanation:
Most air pollution results from ____.
a. the burning of fossil fuels
b. nuclear energy use
c. volcanic eruptions
d. the evaporation of chemicals such as paints and dry-cleaning fluid
Answer:
a
Explanation:
mostly lot of pollutants are from fosills therefore it is true that most of pollusions are from fossil fuels