The process by which sperm are made is called spermatogenesis whereas, the process by which eggs are made is called oogenesis.
What is spermatogenesis and oogenesis?Spermatogenesis and oogenesis are the two processes involved in gametogenesis or reproductive division.
Spermatogenesis leads to the formation of male gamete called sperms, whereas oogenesis lead to the development of female gamete called ova or eggs cell.
The main difference between spermatogenesis and oogenesis is that spermatogenesis is the production process of sperms from male germ cells spermatogonia in males whereas oogenesis is the production of eggs from female germ cells oogonia in females. Diploid germ cell produces haploid gametes.
Thus, from above, it is clear that the processes by which sperms are made is called spermatogenesis and the process by which eggs are made is called as oogenesis.
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What was the first eon of the Precambrian?
Archean
Paleozoic
Hadean
Answer:
The Archean Eon was preceded by the Hadean Eon, an informal division of geologic time spanning from about 4.6 billion to 4 billion years ago and characterized by Earth's initial formation. Records of Earth's primitive atmosphere and oceans emerge in the earliest Archean (Eoarchean Era).
Answer:
the Hadean Eon
Explanation:
PLEASE PLEASE HELP LOL this is from lesson 2 chapter 5 "Pearson Realize"
bestie i need a hand
Propose THREE environmental variables (two abiotic and one biotic) that could explain why millipedes are found more frequently under logs.
Answer:
1. Millipedes can find food easily under logs. 2. Millipedes can stay out of hot environments under a log. 3. Millipedes can stay away from predators under a log.
what makes water impure describe one way of removing soluble in impurities from water
1.The ____________________________________is your first line of defense and its generally impermeable to bacteria and viruses. It also secretes antibacterial ________________________________.
2. Any substance the body reacts against is called an_________________________________ and can be anything from unhealthy body cells, bacteria or viruses, or poisonous substances called _____________________________.
3. Antibiotics are effective against ____________________________infections, but have no effect on most _______________________________infections.
4. Skin, inflammation, stomach acid, and fever are all non-specific parts of the _________________________________immune system.
5. The _________________________immune system is also called "specific" and includes T cells and B cells.
6. The scientific word for ANY white blood cell is _____________________________.
7. The specific immune system has 2 main parts - _________________________________which involves fighting off pathogens in the fluids of the body and ____________________________where infected body cells are destroyed.
8. _______________________________are most involved in humoral and _________________________________are in charge of cell-mediated responses.
9. The T-cell in charge of coordinating the entire immune response is ___________________________________while _________________________________destroys infected body cells.
10. B-cells are in charge of _________________________________production.
11. The lymphatic system is composed of tubes and 500-600 lymph __________________, which are full of lymphocytes and filter and clean body tissue fluid before putting it back into the bloodstream in the chest.
When the heart is working inside the body, the job of the atria is to
A. Increase the blood pressure
B. Regulate the heartbeat
C. Suck blood from the incoming veins
D. Fill the Ventricles
Answer:
D. Fill the ventricles.
Explanation:
The medical definition is "an anatomical cavity or passage especially : a chamber of the heart that receives blood from the veins and forces it into a ventricle or ventricles."
Answer:
Hello There!!
Explanation:
The answer is D. Fill the Ventricles.
hope this helps,have a great day!!
~Pinky~
what is an antibodies , please don't use internet
Explanation:
Antibody
Drug class
Description
An antibody, also known as an immunoglobulin, is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. The antibody recognizes a unique molecule of the pathogen, called an antigen.
Explanation:
An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens.
Sample 2 was taken from a nasal swab of a family member who has been having sinus infections. What course of antibiotics would you recommend?
Answer:
Amoxicillin
Explanation:
Amoxicillin (Amoxil) is a commonly prescribed antibiotic which can cure acute sinus infections. Amoxicillin-clavulanate (Augmentin) is often prescribed by the doctor for a bacterial sinus infection. Take antibiotics as long as your doctor has prescribed in order to get rid completely from the infection and in order to reduce the chances of infection up to zero. They may be taken from 3 to 28 days depending on the time of antibiotic for sinus infection.
What is affected by the electrical signal sent by the fourth structure of the reflex arc?(This will be the fifth structure in the arc.)
Answer:
The effector organ is affected by the fourth structure of the reflex arc.
Explanation:
When talking about the reflex arc, we refer to the sequence of events that occur for the body to react to an external stimulus.
In general terms, the peripheric nervous system receives information from a stimulus coming from the external environment. This information is sent to the central nervous system, where it is processed. From the CNS, another signal is sent as a response to the stimulus. This mechanism is known as the reflex arc.
Five elements compose the reflex arc, which are receptors, three types of neurons, and effectors.
There are three types of neurons involved in the mechanism:
• Afferent or sensorial neurons
• Interneurons
• Efferent or motor neurons
Action:
Ascending branchThe stimulus reaches the body and is received by the specialized sensory receptors. Information is received by these receptors and converted from stimuli energy (temperature, pressure, light, etc.) to action potential energy. Afferent neurons, placed in the dermis and epidermis, receive information from receptors, react and send the information to the central nervous system as nerve impulses.
Descending branchOnce the information reaches the central nervous system, it is processed by the interneurons that analyze it before sending a response. Interneurons manage many sensorial signals, evaluate and compare them, and send a motor response.
Efferent neurons receive information from the interneurons and are stimulated to carry these new signals from the central nervous system to the cells of the effector organs. The effector organ can be a muscle or a gland.
Finally, the target tissue responds to the stimulus as a contraction, if it is a muscle, or as hormones release if it is a gland.
What is the correct sequence proposed by scientists for the evolution of organisms on Earth?
A) photosynthetic prokaryotes
B) Multicellular organisms
C) eukaryotes
D) anaerobic prokaryotes
The diagram shown represents a pair of homologous autosomes. The letters B and b represents genes for a certain trait. These letters also represent …
Answer:
A
Explanation:
The two genes are B and b are located in the same spot, therefore they are alleles or alternative forms of the same gene.
The diagram shown represents a pair of homologous autosomes. The letters B and b represents genes for a certain trait. These letters also represent allele pair that is containing the genes for the same expression.
What is allele ?
It is defined as the set of genes that are controlling the phenotype or genotype expressions of an individual.
Homologous autosomes have all the genes arranged in the same order but a difference in the arrangement of the letters in the genes are present.
While all autosomes present is homologous chromosomes not all homologous chromosomes are autosomes. Autosomes are 22 pairs of chromosomes in human cells. They are divided as homologous chromosomes as they have the same size and contain the same genes locations on each chromosome of the pair.
Autosomes chromosomes are same in length as well at the position from 60 to 200 mb in length. The set of genes that are opposite in nature but control the same expression where one is dominant and another one is recessive.
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1. Explain the origin of the word biology.
The word biology comes from the Greek word bios, meaning life, and logos, meaning study.
why does water enter the paramecium
please answer asap !!!!
Answer:
As paramecium lives in fresh water, it has the problem of water being transported into it because of osmosis.
Explanation:
osmosis is the movement of any solvent through a selectively permeable membrane into an area of higher solute concentration, the result of which will be an equalizing of solute concentration on either side of the membrane.
Answer:
. Their cytoplasm contains a greater concentration of solutes than their surroundings and so they absorb water by osmosis
Explanation:
Paramecium and amoeba live in fresh water.The excess water is collected into a contractile vacuole which swells and finally expels water through an opening in the cell membrane.
Which of the following organisms can have all of the energy it uses to move, grow, and survive traced back to radiant energy from the Sun?
a tree
a human
a flower
a bacterium
a fish
Answer:
a tree and a flower
Explanation:
Answer:
Ummmm, all of them?
Hope this helps!
Explanation:
What term refers to all the different species which live in an ecosystem?
Answer:
That word is Biodiversity
does anyone know how to mark someone Brainllest?
Answer:
it should say it on the answer box
Explanation:
Which of the following is TRUE about igneous rocks?
A. do not contain fossils
B. do not contain crystals
C. May contain layers
Every nation has something to develop for the world's benefit. True False
Answer:
True, All nations are capable of benefitting the world
Explanation:
Every country be it developed, developing or underdeveloped has difference resources, ideologies and cultures. Benefitting the world in terms of only fulfilling the materialistic requirement of the world is not essential, a nation can also benefit the world from its ideologies, life style, etc.
For instance, countries like Bhutan have spread their thought of making everyone life happy, countries like India, and south East Asian countries are emerging producers, etc.
which one ? A? B? C? D?
Answer:
b
Explanation:
maybe something else too but B for sure
Which of the following is the best solution to meet energy demands while protecting the
environment? A. grow more corn to produce ethanol. B. build more nuclear power plants. C. find and
burn new sources of oil and coal. D. improve energy efficiency and reduce energy waste.
Answer:
a
Explanation:
Which of the following is most likely to cause the greatest decrease in the snake population?
Choose 1 answer:
A
A decrease in the mice population
B
A decrease in the hawk population
An increase in the grasshopper population
A decrease in the vulture population
Answer:
I believe the answer is A: a decrease in the mice population
Answer:
Maybe A
Explanation:
Because due to the fact that there is a shortage in mice might cause a decrease in snake population
Two parents have eyebrows that are connected (unibrow). This describes their phenotype. The unibrow is a recessive trait. What is their genotype?
Can the carrying capacity of an ecosystem change?
Answer:
no the carrying capacity of an ecosystem can't change
it is literally impossible hope it helps you have a good day please mark me as brain list
Answer:
No carrying capacity of an ecosystem doesn't change.
Explanation:
Each organism that lives there will have a different carrying capacity, one that interacts with everything around it. If the climate changes and the resources a particular animal needs for food drop, for example, that change in carrying capacity for one species will affect other populations in the area.
PLEASE MARK ME AS BRAINLIESTChoose the items that CORRECTLY describe how Federal judges get- and keep-their jobs.
Article Il gives the President the power to nominate Federal judges.
Article III gives the Supreme Court the power to approve who becomes a Federal judge.
A Federal judge can hold his/her position for the rest of his/her life.
Federal judges can be fired for refusing an order from the President.
Impeachment is the only way a judge can be removed from office (other than death or retirement).
There are over 1,000, Federal judgeships.
The Senate can check the President's power when nominating Federal judges.
The
Answer: 5 correct answers to choose
Explanation:
A Federal judge can hold his/her position for the rest of his/her life.
impeachment is the only way a judge can be removed from office (other than death or retirement).
There are over 1,000, Federal judgeships.
The Senate can check the President’s power when nominating Federal judges.
Article II gives the President the power to nominate Federal judges.
The following items Correctly describe how Federal judges get and keep their jobs:
Article II gives the President the power to nominate Federal judges.
The Senate can check the President's power when nominating Federal judges.
Article III gives Federal judges the power to hold their position for the rest of their life.
Impeachment is the only way a judge can be removed from office (other than death or retirement).
There are over 1,000 Federal judgeships.
Explain Article III.The item "Article III gives the Supreme Court the power to approve who becomes a Federal judge" is incorrect. The Constitution does not give the Supreme Court the power to approve Federal judges.
The item "Federal judges can be fired for refusing an order from the President" is also incorrect. Federal judges cannot be fired by the President; they can only be removed through the impeachment process.
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PLZ HELP THIS IS DUE TODAY!!!
Why is figure 3 more helpful than figure 2?
Answer:
You are more easily able to see the correlation between the two values
Explanation:
17. To produce the same intensity and color of light, you can choose from a 60-watt incandescent bulb, a 17-watt compact fluorescent bulb, or a 10 watt LED bulbWhich is the most energy efficient?
a. The incandescent bulb.
b. The compact fluorescent FL) bulb.
c. The LED bulb
Answer:
10 watt LED bulb.
Explanation:
The most energy efficient is 10 watt LED bulb because it produces more light by consuming less amount of energy. If a substance is more efficient so it consumes less amount of energy for doing its work while on the other hand, less efficient substances uses high amount of energy for doing its work so that's why we can say that 10 watt LED bulb is more efficient its as compared to incandescent bulb and a 17-watt compact fluorescent bulb which uses high amount of energy.
Macrophages are responsible for which functions?
Select all that apply.
initiating an immune response
alerting the body of foreign invasion
removing harmful substances
o providing oxygen to the body
Answer:
B.
Explanation:
Macrophages are specialized cells involved in the detection, phagocytosis and destruction of bacteria and other harmful organisms. In addition, they can also present antigens to T cells and initiate inflammation by releasing molecules (known as cytokines) that activate other cells.
Hope this helps :)
Answer:
A. initiating an immune response
B. alerting the body of foreign invasion
C. removing harmful substances
Explanation:
hope this helps!!
HELP MEEEE WILL GIVE BRAINLIEST
Answer:
3
Explanation:
now brainliest plsssssssssss
Question : Define the term ,' Lava'.
Answer:
Lava, according to Oxford Dictionary, is defined as
"hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this."
Explanation:
I hope this helps!
Answer:
lava is a hot molten liquid of coal of fire which are erupted during volcano eruption.it occurs naturally which temperature is high no one afford its temperature. almost all got dry.
A bottom-up cascade is when there is a change to the top level of the energy pyramid.
True or false.
Plz answer so i dont get grounded.
Answer:
A bottom-up cascade is when there is a change to the top level of the energy pyramid
Explanation:
True
Answer:
True.
Explanation:
Please make sure to read this:
In a bottom-up cascade, the population of primary producers will always control the increase/decrease of the energy in the higher trophic levels. ... In a subsidy cascade, species populations at one trophic level can be supplemented by external food.