Answer:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. ecosystems are vital for human welfare and survival, as they provide us with essential products and benefits.
Over 90% of our food comes from terrestrial ecosystems, which also provide energy, building materials, clothes, medicines, fresh and clean water, and clean air. Protecting wildlife and preserving it for future generations also means that the animals we love don't become a distant memory. And we can maintain a healthy and functional ecosystem.
A solid reactant is placed into a beaker of a warm water. The liquid vigorously bubbles as the solid dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced?
More bubbles will be produced because the solution is becoming more concentrated.
Fewer bubbles will be produced because of fewer collisions of reactant molecules.
The solid will get smaller at a faster rate because of more collisions of reactant molecules.
The solid will get larger at a slower rate because precipitate is coming out of the solution.
Answer: Fewer bubbles will be produced because of fewer collisions of reactant molecules.
Answer:
B) Fewer bubbles will be produced because of fewer collisions of reactant molecules.
Explanation:
on Edge
Read the paragraph below to answer the question.
This event was of great significance to modern Chinese history. The monarchial system was
discarded with the founding of the provincial government of the Republic of China. The
victory was soon compromised by concessions on the part of the Chinese bourgeoisie, and
the country entered a period dominated by the Northern Warlords, headed by Yuan Shikai.
(1 mark)
What event is described above and in which year did it happen?
(2 marks)
Answer: 2
Explanation:
2.I'm strong and stiff
Getting through me is tough
I'm found only in plants
I'm what makes sticks tough What am I?
A)Golgi Body (Complex)
B)Endoplasmic Reticulum
C)Nucleus
D)Ribosomes
E)Cell membrane
F)Cell wall
G)Vacuole
H)Lysosomes
I)Vesicles
J)Chloroplast
K)Chromosomes
L)Mitocondria
Answer:
Cell wall. I'm strong and stiff . Getting through me is tough. I'm found only in plants, but I guess ... You can find me in the cytoplasm or attached to E.R.'s wall.
Bio--Plant and Animal Cells Flashcards | Quizlet
Explanation:
an ion is formed when an atom
Answer:
The basic unit of the chemical elements
Two of the five types of taste buds are activated by directly hypopolarizing the taste buds; i.e. do not involve a second-messenger pathway. The tastes that activate these receptors are:
Answer: salty and sour
Explanation:
Taste buds consist of the taste receptor cells and they're the nerve endings on the tongue that provide the sense of taste.
Based on the information given, the tastes that activate these receptors are salty and sour. The tastes depolarize the cell receptor directly.
Which of the following statement(s) is/are true regarding the adrenal glands' relationship with the autonomic nervous system?
a. The adrenal cortex is an extension of the parasympathetic nervous system.
b. The adrenal medulla secretes norepinephrine when stimulated by the sympathetic nervous system.
c. The adrenal glands are strictly nerve tissue.
d. The parasympathetic division stimulates the adrenal cortex to secrete glucocorticoids.
e. The adrenal medulla is penetrated by the fibers of the sympathetic nervous system.
Answer:
The true statements regarding the adrenal glands' relationship with the autonomic nervous system are:
a. The adrenal cortex is an extension of the parasympathetic nervous system.
c. The adrenal glands are strictly nerve tissue.
d. The parasympathetic division stimulates the adrenal cortex to secrete glucocorticoids.
e. The adrenal medulla is penetrated by the fibers of the sympathetic nervous system.
Explanation:
The levels of the central nervous system which play important roles in influencing the autonomic nervous system include cerebral cortex, hypothalamus, brain stem, and spinal cord. Usually, epinephrine (adrenaline) and norepinephrine are released into the blood stem when stress or a threat occurs. This alert serves as a warning signal and defense system. The purpose is to maintain homeostasis.
Membrane proteins: are sometimes covalently attached to lipid moieties. are sometimes covalently attached to carbohydrate moieties. are composed of the same 20 amino acids found in soluble proteins. diffuse laterally in the membrane unless they are anchored All of the answers are correct.
Answer: All of the answers are correct.
Explanation:
Membrane proteins are sometimes covalently attached to lipid moieties. They're also composed of the same 20 amino acids found in soluble proteins and diffuse laterally in the membrane unless they are anchored. They're sometimes covalently attached to carbohydrate moieties as well.
Therefore, the correct option is All of the above.
If a white cat is cross with a black cat the offspring produced are black cat with white patches
Answer:
in f1 generation all offspring will appears in dominant character which is black and recessive will be hidden which is white
Complete each sentence.
a. Cross-bridge binding triggers the release of ATP hydrolysis products from _________, and produces the _______ which generates force.
b. Ca2+ binds to _____________ on the thin filaments, causing tropomyosin to move away from its blocking position, thereby uncovering cross-bridge binding sites on ____________
c. Energized portions of myosin molecules called ________________ bind to actin.
d. __________________ binds to myosin, breaking the linkage between actin and myosin and thereby allowing the cross-bridges to ________from actin.
Answer:
Plzz upload a full picture of ur chapter
Which actions could be categorized in the “aerobic” section of the Venn diagram?
Answer:
Starts process with a glucose molecule (Obtaining ATP begins with a breakdown of a glucose molecule (hence the name of glycose), and this is in common with the anaerobic process since this step does not require oxygen.)
Explanation:
❣️ꈍ jess bragoli ꈍ❣️#keep learning!!
Answer:
If your doing the test on edgen then the answers are A.)consists of three stages, B.)yields 36 ATP molecules and, E.)starts process with a glucose molecule
Explanation:
I really hope his helps :) !!!!!!!!!!!!
Please push that thank you button and have a great day!!!!!!!!!
What similarities and differences do you see with our human species?
Answer:
similarities: body differences:attitude
Explanation:
everyone has body with similar properties such as hand,leg and eye.while attitude they have good and bad depends on the education they get.
Which of the following is a part of male gamete formation, but not a part of female gamete formation? testes ovaries germ cells oogonia
Answer:
A. Testes
Explanation:
I got it right on the test
Answer:
A Testes
Explanation:
I got it right on Edgenutity 2021
Temperature regulatory apparatus of the mammal include the following pairs
a. epidermis and dermis
b. hair follicles and nerve ends
c. sweat glands and sebaceous glands
d. sweat glands and hair follicles
2 True or False. A projectleie an object that once set in motion continues in motion by its own martia O True False
Answer:
The answer is true.Explanation:PARTICLES MOVING ALONG THE PATH POSSES A TWO DIMENSIONAL MOTIONMARK ME AS BRAINIST PLZ
Complete these sentences by matching the phrases below.
When light
waves are
emitted by a
moving source,
scientists can
?
the Doppler effect.
measure:
Scientists smash
together tiny bits
of matter using:
?
cosmic microwave
background radiation,
Scientists
extrapolate
backwards in
time to derive:
?
particle accelerators.
The extremely
low temperature
of outer space
can be explained
as:
?
the Big Bang theory
NEED HELP ASAP!
The Doppler Effect talks about the frequency of sound and light as the source and person move. So, When light waves are emitted by a moving source, scientists can measure = the Doppler effect.
Cosmic microwave background radiation has the word "cosmic" in it, so you can assume it has to do with space automatically. There is radiation in space too, so I'm pretty sure that The extremely low temperature of outer space can be explained as = cosmic microwave background radiation.
Particle accelerators are these big machines that usually smash protons/electrons together, so Scientists smash together tiny bits of matter using = particle accelerators.
And now, by process of elimination and because the Big Bang Theory talks about the creation of Earth, we know that Scientists extrapolate backwards in time to derive = the Big Bang Theory.
What methods help control pollution source
Practicing conservation tillage traps contaminants from Runoff water. Practicing conservation tillage helps prevent BLANK
A. Air pollution
B. Water pollution
C. Soil erosion
All claims in science should be supported by biology
Answer:
yes
Explanation:
Because science &biology have a connection
What cause disease blood cancer
Answer:
-Advanced age
-Certain types of infections
-Compromised immune system due to such conditions as HIV/AIDS, taking corticosteroids, or organ transplant
-Exposure to certain chemicals
-Exposure to radiation or certain types of chemotherapy
-Family history of blood cancer
-HIV/AIDS
-Solid organ transplant recipient
-Personal history of certain blood disorders
-Personal history of certain genetic disorders (Down syndrome)
-Smoking
Explanation:
Leukemia
A type of cancer which affects the production and function of blood cells. This causes swollen lymph nodes, recurrent nosebleeds, tiredness, frequent infections, weight loss, bleeding, and bone pain. Leukemia symptoms vary, depending on the type of leukemia. Common signs and symptoms of leukemia include:
Swollen lymph nodes especially in the neck and armpits
Experience pain in bones
Night sweats - excessive sweating, especially at Night
Weakness and fatigue
Rapid weight loss
Red spots on the skin
Bleeding and bruising easily
Fever or chills
Frequent infections
Causes
The exact cause is not known. Hereditary and environmental factors may play a role in developing the disease.
The risk factors include:
Mutations in the DNA are frequently a major cause.
Sometimes chromosome translocation can also promote activation of oncogenes (the cancer inducing genes) and this can lead to disease progression.
Exposure to certain chemicals and radiation can also induce cancer.
Normal diploid somatic cells of the mosquito Culex pipiens contain six chromosomes. The G1 nucleus of a mosquito cell contains 3.0 x 10^-12 grams of DNA. How much nuclear DNA would be expected in metaphase I of meiosis?
a. 6.0 x 10^-12 g.
b. 1.5 x 10^-12 g.
c. 12 x 10^-12 g.
d. 3.0 x 10^-12 g.
e. 0.75 x 10^-12 g.
Answer:
a. 6.0 x 10^-12 g.
Explanation:
The interphase is the previous step before the cell divission occurs. The interphase is formed of the G1, S, and G2 stages.
• During the G1 stage, it occurs a high intense biochemical activity. The cell duplicates its size, and the organelles and other molecules and cytoplasmatic structures duplicate too. Some structures, such as microtubules and actin filaments, are synthesized from zero. The endoplasmic reticulum increases in size and produces a membrane for the Golgi apparatus and vacuoles, lysosomes, and vesicles. During this stage, the pair of centrioles separate, and each centriole duplicates. Mitochondria and chloroplasts also replicate.
• During the S stage occurs the DNI replication process. It also occurs the synthesis of histones and other associated proteins. This is the only stage where the DNI molecule is replicated.
• G2 stage is the final one before the cellular division. Here begins the slow process of DNI condensation. Duplication of centrioles completes. Structures such as spindle fibers are assembled.
Through the process of Meiosis, a diploid germ cell (2n) divides and originates four daughter cells with a haploid chromosome number (n). Each daughter cell has half of the chromosomes of the original one. Meiosis is completed in two phases. During the first phase, and after replication, occurs the chromosome´s reduction division. During the second phase, the cell suffers a new, not reductive division.
1. In the first phase, Meiosis I:
Prophase I: Chromosomes condensate and became visible. Occurs crossing-over between homologous chromosomes. Crossin-over makes the daughter cells to be genetically different from the original one. Metaphase I: The pairs of homologous chromosomes randomly align in the equatorial plane. Anaphase I: occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. Telophase I: Each of the homologous pairs chromosomes is already in the corresponding poles, and the nuclear membrane forms again in each pole.2. In the second phase, Meiosis II:
Prophase II: Chromosomes condensate again and become visible. Metaphase II: Chromosomes join the spindle apparatus and migrate to the equatorial plane, where they randomly line up. Sister chromatids are holden together until they reach the Anaphase. Anaphase II: Centromeres divide, chromatids get separated, and each of them goes forward an opposite cellular pole. Telophase II: Once in the poles, the chromosomes became lax again, and cytokinesis occurs.In the exposed example, DNI in the G1 nucleus of a mosquito cell still has not suffered replication (3.0 x 10^-12 grams). The replication process occurs during the S stage, which follows the G1 stage. After the S stage, the cell has 6.0 x 10^-12 g of DNI.
During meiosis, the reduction in chromosomes number occurs in anaphase where homologous chromosomes migrate to different poles. But during metaphase I, the cell still has 6.0 x 10^-12 g of DNI.
Discuss the sensory neurons for vision. What are the two
types of sensory neurons for vision? Where are they located?
What are their functions in the eye? What path does visual
input take AFTER reaching the sensory neurons (be specific,
outlining the entire path to the destination point of the brain)?
Answer:
Olfactory sensory neurons (OSN).
Explanation:
Olfactory sensory neurons (OSN) are the sensory neurons that is responsible for vision. Photoreceptors and olfactory sensory neurons (OSN) are the two types of sensory neurons for vision. Both olfactory sensory neurons (OSN) and photoreceptors is responsible for the receiving of photons and enable us to see things. The right half of the visual field will travel in the left optic tract, while on the other hand, the stimuli from the left half of the visual field will pass through the right optic tract.
Answer: The two types of sensory neurones are the CONES and RODS. Their functions are better outlined below
Explanation:
The CONES and RODS are the sensory neurones ( photoreceptors) of the eye which are located in the retina.
The RODS: They are extremely sensitive and can detect light of very low intensity. They also perceive light in black and white. They, therefore, play an important role in dim light.
The CONES: They function in bright light and are responsible for colour vision.
The path visual input take AFTER reaching the sensory neurons is as follows:
--> the rods and cones are stimulated
--> A pattern of electrical impulses is sent to the brain through the optic nerve which interprets it, drawing on past experience.
The brain tells us that the object is upright and gives us it's real size and distance from the eye. We, therefore, see the object as it actually is, and not as the image formed on the retina.
how long does it take for a CRISPR to work?
Comparing Densities
If two balls have the same volume, but ball A has twice as much mass as ball B, which one will have the greater
density?
If ball C is 3 times the volume of ball D and ball D has 1/3 the mass of ball C, which has the greater density?
If two balls have the same mass, but ball P is twice as large as ball Q, which one will have the greater density?
If ball X is twice as big as ball Y and weighs only half as much as ball Y, then which one will have the greater
density?
mious Activity
Answer:
Ball A has more density.
Explanation:
Density is found using mass divided by volume. Let's say ball A has a mass of 6 grams, and ball B has a mass of 3 grams. If the volume for both is 1 mL, then ball A has more density.
what happens to the respiratory system of a pilot who is in a power dive in supersonic plane.
no links
Explanation:
Due to lack of O2, the lungs will start breathing anaerobically i.e; without oxygen this may lead to cramps
Answer:
Due to lack of O2, the lungs will start breathing anaerobically
i.e.; without oxygen. This may lead to cramps.
Chemical rocks are formed by ____ that grow out of a solution.
Answer:
crystals
Explanation:
we should conserve environment give reason
Answer:
for healthy living and long life
have fewer branches than astrocytes. are star-shaped cells. are branched extensions off of a neuron. are small, phagocytic cells in the central nervous system. are the supporting cells of the nervous syste
Answer:
Neuroglia - the supporting cells of the nervous system
Oligodendrocytes - fewer branches than astrocytes
Dendrites - branched extensions off of a neuron
Astrocytes - star-shaped cells
Microglia - small, phagocytic cells in the central nervous system
Explanation:
The given cells in the question are cells of different types of neuroglial cells that are astrocytes, microglia, oligodendrocytes are different types of neuroglial cells. The nervous systems are supported by this Neuroglia.
As the name indicates Astrocytes are star-shaped cells and carry many branches whereas, Dendrites are the smaller, but higher in numbers, projections of the neuron cell body. It has also axon projection bind to the cell body.
• Microglia are phagocytic cells that protects thenervous system
urine is made of nutrients and water
Answer:
what's the question over here?!
Which isn’t an example of a matrix in which organisms may become fossilized
Answer:
where's the options for this question?
:/
there is no option?? ?
ii) Explain briefly how these features contribute to the efficiency of photosynthesis?
Answer:
here's your answer
Explanation:
the estimated maximum energy efficiency of photosynthesis is the energy stored per mole of oxygen evolved, 117/450, or 26 percent.
Consequently, plants can at best absorb only about 34 percent of the incident sunlight. The actual percentage of solar energy stored by plants is much less than the maximum energy efficiency of photosynthesis. An agricultural crop in which the biomass (total dry weight) stores as much as 1 percent of total solar energy received on an annual areawide basis is exceptional, although a few cases of higher yields (perhaps as much as 3.5 percent in sugarcane) have been reported. There are several reasons for this difference between the predicted maximum efficiency of photosynthesis and the actual energy stored in biomass. First, more than half of the incident sunlight is composed of wavelengths too long to be absorbed, and some of the remainder is reflected or lost to the leaves
The organisms in Kingdom Monera do not have complete cell. They are called ____________.
A. autotrophs
B. Prokaryotic
C. Eukaryotic
D. Heterotrophs
Answer:
The correct answer is - A. prokaryotic.
Explanation:
Monera is the kingdom that has not complete cell organization as eukaryotic cells and shows similar cell organization like prokaryotic cells with no clear nuclear membrane and a unicellular body.
The true bacteria and cyanobacteria are the member of this group. The nature of the organisms is either autotrophic or heterotrophic. Thus, the correct answer is - prokaryotic.
The organisms in Kingdom Monera do not have complete cell. They are called
B. prokaryotic