Explanation:
Activators (and sometimes inducers) instigate positive regulation, and repressors instigate negative regulation.
Which organ(s) plays a major role in maintaining homeostasis when toxins build up in the body?
heart
kidneys
lungs
pancreas
Answer:
Kidneys is the correct answer!!
Explanation:
Suppose that a minnow eats 100 marsh plants in a year. How much DDT build up in the body of the minnow?
Answer:
10,000
Explanation:
because:
1 marsh plant= 1 DDT
a minnow = 100 DDT
if 1 minnow = 100 DDT
100 marsh plants = 100 DDT
you multiply 100 by 100
You get 10,000 as the answer.
Bioaccumulation is the accumulation of persistent substances, many times toxic substances, in the organisms' tissues. In the exposed example, if the minnow eats 100 plants, it will get 100 units of DDT.
----------------------
This problem states that
a farmer sprays DDT in a field.DDT reaches the marsh plants by the wind actionEach plant receives 1 unit of DDT, which remains in the plant by bioacumulation.When talking about bioaccumulation we refer to a net accumulation of metals and other persistent substances in the tissues of an organism.
Accumulation occurs during the individual's life and can be transmitted to other organisms in the trophic chain.
There are two ways in which an organism can get these substances,
from other living beings (trophic chain) by direct consumption from the soil, air, and water.
So, according to the introduction, each plant has one unit of DDT.
1 marsh plant -------------- 1 unit of DDT
We need to find out how much DDT gets one single minnow that eats 100 marsh plants in one year.
So here, we can just perform a three simple rule.
If one plant has 1 DDT units, how many units DDT are in 100 plants??If one minnow eats 100 plants in a year, how many DDT units does it get?1 marsh plant -------------- 1 unit of DDT
100 marsh plants ---------X = 100 units of DDT
If the minnow eats one plant, it will get one unit. But if the minnow eats 100 plants, it will get 100 units of DDT.
-----------------------------
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So, how do you think I "Life Comes Back" after being completely wiped out?
Answer:
mutations
Explanation:
Multiple choice question
Help me plz here it is
if a rock has a volume of 2cm3 and a mass of 12g what is its density
Answer:
If a rock has a volume of 2 cm³ and a mass of 12 gr, its density will be 6 gr/cm³.
Explanation:
Density is a parameter used in chemistry and physics, which relates the mass and volume of a solid or compound, establishing the amount of volume that occupies a given mass.
If we observe the density formula, we can see that the greater the mass, the greater the density, while the volume is inversely proportional, so the lower the volume, the greater the density. This formula is:
ρ = m/V
Therefore, according to the mass and volume of the rock
ρ = 12 grs / 2 cm³
ρ = 6 grs/cm³
Being the density of the rock equal to 6 gr/cm³.
Choose the option that best matches the description given.
I will give the right answer Brainliest. Human services organizations seek to make changes and help people in need to improve their ______.
employment options
defense mechanisms
quality of life
Answer:
Quality of life
Explanation:
Filament of a bulb glows due ᴛᴏ.......
effect of the electric current.
Explanation:
The filament of a electric bulb glows because of the heating effect of electric current. As the current passes through the bulb it heats the filament which gives off light.
Which of the following is NOT a characteristic of animals?
A. Heterotrophic
B. Contain eukaryotic cells
C. Contain cell walls
D. Mobility
Answer:
D
Explanation:
What is one of the reasons why Gregor Mendel chose to study pea plants?
Answer:
To study genetics, Mendel chose to work with pea plants because they have easily identifiable traits.
Explanation:
For example, pea plants are either tall or short, which is an easy trait to observe, with that being said pea plants grow quickly, so he could complete many experiments in a short period of time.
To study genetics, Mendel chose to work with pea plants because they have easily identifiable traits.
What are Pea plants?Pea plants are either tall or short, which is an easy trait to observe, with that being said pea plants grow quickly, so he could complete many experiments in a short period of time.One of the reasons why Gregor Mendel chose to study pea plants is because they reproduce sexually.
In Gregor Mendel's work on pea plants, he discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Parental genes are randomly separated to the reproductive cells so that s-ex cells contain only one gene of the pair.
Therefore, To study genetics, Mendel chose to work with pea plants because they have easily identifiable traits.
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A chemical equation is balanced if the number of each type of atom on the left side is equal to the number of each type in the right side . Is this reaction balanced?
Answer: No
Explanation:
hope it helped
3
1 point
Which of the following is an example of adhesion?
water forming raindrops
water attracted to the side of a glass tube
hydrogen bonding
surface tension on a pond
Previous
The correct answer is option (3) hydrogen bonding.
What is hydrogen bonding?
Hydrogen bonding refers to the formation of Hydrogen bonds, which are a special class of attractive intermolecular forces that arise due to the dipole-dipole interaction between a hydrogen atom that is bonded to a highly electronegative atom and another highly electronegative atom which lies in the vicinity of the hydrogen atom.
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Which best describes the tongue, ears, and nose?
A) sense organs that are part of the central nervous system
B) sense organs that are part of the peripheral nervous system
C) internal organs that are part of the central nervous system
D) internal organs that are part of the peripheral nervous system
Answer: A
It’s all main body parts that help us in everyday life
tongue, ears, and nose are best described as: (A) sense organs that are part of the central nervous system
Meaning of Sense organs
The sense organs can be defined as a group of organs in the human body which helps the human body interact with its environment.
The sense organs helps receive information and send to the brain for interpretation. The major five sense organs are: eye, nose, ear, tongue etc.
In conclusion, tongue, ears, and nose are best described as the sense organs that are part of the central nervous system
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Mice have two unlinked allele pairs that affect fur color. The table shows how allele pairs affect fur color. The term “agouti” describes fur with pigmentation that changes in each hair from the shaft to the tip, giving the fur a banded appearance. Mice with the aa allele pair are albino, regardless of the second allele-pair combination.
What is the probability of albinism in the offspring of a cross between two mice with AaBb alleles?
3/16
1/16
9/16
4/16
Answer: 4/16
Explanation:
The probability of albinism in the offspring of a cross between two mice with AaBb alleles is 4/16.
What is Probability?This is an expression which tells how likely an event will occur. It is usually gotten by dividing the favorable number of outcomes by the total number of possible outcome.
The total number of possible outcome is 16 and the favorable number of outcomes (AaBb) is 4.
This means the probability is 4/16.
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A. The mutation did not affect the child.
3. A child is diagnosed with sickle cell disease, a
genetic blood disorder. Which of the following is
true about the mutation that occurred?
B. The mutation produced a beneficial effect.
C. The mutation is due to the environment
D. The mutation produced a harmful effect.
Answer:
probably D because genetics doesnt rlly have to do for environment
Your friend Suzanne says that the Ancient Romans must have sent letters only when they were in love or wanted to wish their friends a happy birthday because that's what her family does. How would you describe Suzanne's behavior? Egotistic ethnocentric ethno-oriented scientifically tested
Answer:
ethnocentric
Explanation:
Based on this scenario, I would describe Suzanne's behavior as being ethnocentric. This is simply due to the fact that she is applying her own cultural customs to that of Ancient Romans which she has never met or dealt with their customs. She is simply using her own experiences from her culture and what she knows to explain other culture's behaviors, which is exactly what an ethnocentric person tends to do.
A food web is shown below.
Hawk +
Bat
Raccoon
Dragonfly
Owl
Mouse
Beetle
An organism in the food web is labeled X.
a. Identify and describe the ecological role of organism X in the food web.
T
Answer:
it is the most important thing in the ecosystem
Explanation:
because if X is removed from the ecosystem then mouse & beetle is dead because they depends on X organism
Which are protostomes?
A. Worms
B. Humans
C. Horses
D. Flowering plants
Answer:
worms
Explanation:
the way the animal grows
Please i need help fast! What societal, ecological, or technical constraints should resource managers consider before proposing solutions?
Answer:
Explanation:When the cumulative impact of humans was small, the environmental implications of ... Ecological constraints add one more set of considerations to the list. ... difficulty of finding short-term solutions that do not aggravate long-term problems. ... Rates of extraction of renewable resources should not exceed regeneration rates.
Answer and Explanation:
Social constraints refer to the social traits and behaviours that affect the project's sustainability within a public. Social constraints include informal norms comprising cultural preference or formal practices, for example, government rules, that a resource manager should consider before proposing a solution. Technical constraints are fixed technical design decisions that might not be altered. Most frequently, technical constraints are brought by the stakeholders at the onset of the plan. There are technical constraints that a resource manager should consider before proposing a solution such as programming language required for numerous reasons, platforms supported or operating system and frame work. Businesses are the most affected by ecological constraints. Ecological constraints such as social expectations and requirements, competitors' act, legal requirements, modification in business, and modification in technology that a resource manager should consider before proposing a solution. Ecological constraints are essential to the business that should be plan ahead.
Why is still water an ideal environment for the formation of mold and cast fossils?
a) sediment builds up over organisms
b) sediment turns organisms into rock
c) hard tissue decays under sediment
d) soft tissue is preserved under sediment
Block mountains are caused by faults in the crust, where rocks can move past each other in a rift and rise. the uplifted rocks become block mountains while the intervening dropped blocks are known as graben. Which mountain ranged is formed this way?
Answer:
This is true except they are called fault-block mountains
Explanation:
What type of mutation is this?
TAC GAT TAT CGC ATC
TAC GAT TAT CGG GAT C
Answer:
those are DNA bases
Explanation:
Please Ill give Brainliest Which process is responsible for changing the composition of rock?
erosion
abrasion
chemical weathering
mechanical weathering
Answer:
Surely, It's erosion.
Erosion breaks the rocks down into halves.
Have a nice day
Answer:
its erosion
Explanation:
ANSWER FORM EDGE 2020
10. The cell membrane is?
A permeable. B. semi-permeable
C. impenetrable
Answer:
B, semi-permeable
Explanation:
Answer:
Semi-Permeable
Explanation:
This is due to the reason that cell membranes require water and other nutrients to enter the cell and waste to exit the cell in order for it to function properly. If the cell membrane were permeable, anything would be able to enter including harmful microbes. If the cell membrane were impenetrable, the cell would die as it would not be able to receive the nutrients and materials needs.
I need help with this!
Relate cell size to cell functions, and explain why cell size is limited.
Answer:
Cells are small to have a larger surface area to volume ratio
Explanation:
Since there is always things moving across the phospholipid bilayer of the cell, there needs to be a large surface area compared to volume. A good analogy that I use is elephants ears. They are huge but super thin to keep a large surface area to volume ratio. This lets heat diffuse from the elephant. Its the same thing with cell, maximizing the efficiency of the phospholipid bilayer.
where are the 46 chromosomes found.
Answer:
The Nucleus!
Explanation:
Have a nice day~
Answer:
Nucleus.
Explanation:
Human chromosomes are located inside the nucleus of the cell. A chromosome is a structure that holds your genes. Your genes determine your traits, such as eye color and blood type. The usual number of chromosomes inside every cell of your body is 46 total chromosomes, or 23 pairs.
Some bacteria are helpful because they help us breathe by producing
Answer:
Bacteria such as Porphyromonas gingivalis, Treponema denticola and Prevotella intermedia can help people produce breath.
Explanation:
Answer:
oxygen, some bacteria are helpful because they help us breathe by producing oxygen.
Explanation:
Which is a TRUE statement about the energy pyramid shown?
Answer:
D is your answer.
I hope this helps you, kind sir/ma'am/whatever your pronouns are!
Please help, I need help
Answer:
yes it is c.
Explanation:
Quantitative is a number which would be represented by B. c however is describing something and its quality hints making it a qualitative description
ASAP HELP ME PLSSS HERE ARE THE ANSWER KEYS LISTEN EM IN ORDER WITH THE QUESTIONS
answer keys :
reproductive
immune
skeletal
lymphatic
digestive
muscular
nervous
Endocrine
excretory
respiratory
circulatory
integumentary
Answer:
1. Circulatory
2. Digestive
3. Lymphatic
4. Muscular
5. Integumentary
6. Skeletal
7. Respiratory
8. Immune
9. Reproductive
10. Excretory