Answer:
Index fossils are fossils that are widespread but only existed for a short period of time. Index fossils help scientists to find the relative age of a rock layer and match it up with other rock layers. Living fossils are organisms that haven't changed much in millions of years and are still alive today.
Para un carácter existen tres alelos distintos: dos codominantes entre sí y otro recesivo. ¿Cuántos genotipos distintos existirán para ese carácter?¿Cuántos fenotipos?
Answer:
6 genotipos y 4 fenotipos
Explanation:
La codominancia es un tipo de interacción alélica donde ninguno de los dos alelos puede enmascarar la expresión del otro alelo, produciendo de este modo un fenotipo diferente en presencia de ambos alelos (es decir en individuos heterocigotas). Un ejemplo de alelos codominantes son los alelos A y B del grupo sanguíneo, los cuales se expresan en individuos heterocigotos. Por otra parte, un alelo recesivo sólo puede expresarse en individuos homocigotas que portan dos copias del mismo alelo recesivo. El caso del grupo sanguíneo es idéntico a la pregunta planteada, ya que en este caso tenemos dos alelos codominantes entre sí (alelos A y B) los cuales son dominantes respecto al alelo O recesivo. En este caso, de la combinación de alelos pueden resultar seis genotipos (IAi; IAIA; IBi; IBIB; ii; AB) y cuatro fenotipos (tipo de sangre A, tipo de sangre B, tipo de sangre AB y tipo de sangre O).
which accessory gland is important in male reproduction
Answer:
Prostate
The prostate is one of the male accessory glands that contributes to the male ejaculate by producing seminal fluid.
Answer:
prostate
Explanation:
might be wrong tho ynk
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.
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.
does anyone know how to mark someone Brainllest?
Answer:
it should say it on the answer box
Explanation:
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!!
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.
1. Explain the origin of the word biology.
The word biology comes from the Greek word bios, meaning life, and logos, meaning study.
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.
Two parents have eyebrows that are connected (unibrow). This describes their phenotype. The unibrow is a recessive trait. What is their genotype?
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
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.
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.
which one ? A? B? C? D?
Answer:
b
Explanation:
maybe something else too but B for sure
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 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:
HELP MEEEE WILL GIVE BRAINLIEST
Answer:
3
Explanation:
now brainliest plsssssssssss
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 BRAINLIESTwhat makes water impure describe one way of removing soluble in impurities from water
Which organisms store some of the molecules from food in their bodies 15 points
to use later as a source of chemical energy and building materials?
animals
plants
both plants and animals
none of the above is correct
Not sure but i think its plants
Both plants and animals store some of the molecules from food in their bodies to use later as a source of chemical energy and building materials.
One of the important characteristics of living organisms is metabolism. Living organisms are able to obtain food which is stored as various chemical substances in the body.
This food materials that are stored as chemical substances are later broken down to produce the energy required by the organism to carry out its activities. Both plants and animals store some of the molecules from food in their bodies to use later as a source of chemical energy and building materials.
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NEED HELP! 6th grade plants lesson. I'm in a hurry.
Sooo what do you need help on?
I will try my best to help you out!
Origin: lateral third of clavicle, acromion, and spine of scapula. Action: abduction, flexion and extension, medial and lateral rotation of arm * Deltoid Infraspinatus Supraspinatus Subscapularis
Answer:
The correct answer is - Deltoid
Explanation:
Deltoid muscles are thick triangular muscles that help in raising and rotating arm covers shoulder joints. It originates lateral third of the clavicle, inferiorly along the spine of the scapula to the acromion.
Deltoid muscles provide actions that include flexion and medial rotation, abduction, and extension, and lateral rotation at the shoulder joint. Deltoid means triangle or that has three sides as it has three originating sides.
To which category does galaxy #2 belong? Why does it belong in this category?
Answer:
mildly category .... if am not wrong
Answer:
Explanation:
Galaxy #2 belongs to spiral. This is because it has a bulge at the centre, a disk as well as the curved arms. Contains both Young and Old stars - contains gas and dust - contains more red giants and red supergiant's than disk - some regular rotation about centre.
What Is Dark Matter?
Dark matter is a form of matter thought to account for approximately 85% of the matter in the world. Dark matter consists of particles that do not absorb, reflect or emit light, so they cannot be detected by observing electromagnetic radiation. Dark matter is material that cannot be directly seen. We know dark matter exists because it affects objects we can directly observe.
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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:
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 TRUE about igneous rocks?
A. do not contain fossils
B. do not contain crystals
C. May contain layers
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:
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.
Which of the following dietary practices would have the most positive impact on the overall physical performance of an individual?
O reducing intake of fats to zero
O balancing the intake of nutrients
eating energy bars and drinking sports drinks
O consuming more proteins than carbohydrates
Answer:
i think B.
Explanation:
Balancing nutrient intake will have the most positive effect on a person's overall physical performance. So, the correct option is (B).
What are Nutrients?A nutrient is defined as a substance that is used by an organism to survive, grow and reproduce. The requirement for dietary nutrient intake applies to animals, plants, fungi, and protists. These are the chemical compounds in food which are used by the body to function properly and maintain health.
Different types of nutrients are as follows:
CarbohydratesProteinsFatsVitaminsMineralsDietary fibreWaterIt is a substance that the body needs for survival, growth and reproduction. It gives us energy and allows our bodies to perform their essential functions. Every organism on our earth needs nutrients which are essential for life.
Thus, balancing nutrient intake will have the most positive effect on a person's overall physical performance. So, the correct option is (B).
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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.