Answer:
A
Explanation: In the summertime in the northern hemisphere, the Earth is farther from the Sun because of the ellipse in its orbit, but the angle of the Earth's tilt points the hemisphere towards the Sun, making the days longer. The Sun's angle is also higher during the summer months than the winter months.
Answer:
A
Explanation:
Study Island
Plants and other producers make their food using photosynthesis
O
O
True
False
Answer:
True
Explanation:
. Your lab technician was to determine the ash content of buttermilk by conventional dry ashing. The technician weighed 5 g of liquid buttermilk into one weighed platinum crucible, immediately put the crucible into the muffle furnace using a pair of all stainless steel tongs, and ashed the sample for 48 h at 800 °C. The crucible was removed from the muffle furnace and set on a rack in the open until it was cool enough to reweigh. (4 marks)
a. What errors were made in the preceding method (there were several)?
b. What were the likely results of these errors?
Answer:
Ashing process is done to evaluate the ash content present in petroleum or other proucts, so that they can be used for certain applications
The two major types of ashing process that includes dry ashing and wet ashing and can be performed using microwave systems or conventional means.
a. errors made in the preceding method while determining the ash content of buttermilk by conventional dry ashing are as following:
Buttermilk should not immediatly put into muffle immediatley, it should be boiled first to avoid splatter.Temperature should be between 500 to 600 degree celcius at high temperature teh ash content can be loss.The sample should be ashed for 12-18 hrs , more than this can damage the required ash content.platinum tip should be used in place of stainless steel because platinum has a lower concomitant tip impedance than stainless stell, so less reactive to ash.The ash should put in dessicator and not allow to kept in open because ash can react with the humidity in teh atmosphere.b. The result that occur due to above errors such as the temperature, time, tongs and leaving ash in open will manipulate the final ash content and its application can be harmful for humans and for other purpose if it will be used.
which species is the banana most closely related to?
lemon
onion
radish
seaweed
Answer:
onion
Explanation:
"Onions are most closely related to a) banana. Onions are part of the Amaryllidaceae family and bananas are part of the Musaceae family. They are both monocots, meaning the have one cotyledon, parallel leaf veins, and flower petals in multiples of three, among other distinctive characteristics. "
Answer:
Onions are most closely related to a) banana. Onions are part of the Amaryllidaceae family and bananas are part of the Musaceae family. They are both mono cots, meaning the have one cotyledon, parallel leaf veins, and flower petals in multiples of three, among other distinctive characteristics.
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Explanation:
The outermost cells of the skin die and slough off because
Answer:
Explanation:
The keratinocytes: cells found in the outermost layer of the epidermis that produces fibrous protein which gives hair, nails, and skin their hardness and water-resistant properties dies as a result of their distance from the rich blood supply the cells of the next layer lie on top off. Due to less nutrients and oxygen, these cells die as they are pushed towards the surface of our skin.
75 POINTS!!! One reason male peacocks spread their tail feathers is to attract a mate. How does choosing a male with a bright, full tail increase a peahen’s chance of producing healthy peachicks?
Answer:
They have greater health conditions
Explanation:
if they are bright, they are healthy
Answer:
Typically, if a peacock has a bright tail with many feathers and eyespots, a female will choose him. These tail features indicate that the peacock may be healthier than other males and, therefore, produce healthier peachicks.
Explanation:
This is the sample response.
Recessive sex-linked traits such as color blindness appear more frequently in
males because
A. males inherit only one sex chromosome.
B. males inherit two copies of every sex-linked allele.
C. sex-linked alleles are carried only on Y chromosomes.
D. males inherit only one sex-linked allele.
The equation AU = Q - W describes which one of the following?
O A. Second law of thermodynamics
O B. Efficiency of a heat engine
O C. Work done by a gas
O D. First law of thermodynamics
SUBMI
Answer:
D. First law of thermodynamics
Explanation:
The first law of thermodynamics refers that energy can be tranferred or changed form one form to another but it can neither be destroyed nor be created. hence, it is also known as law of conservation of energy.
The equation ΔU = Q − W describes the first law of thermodynamics.
Where
U is the internl energy of the system. ΔU is the change in U. Q refers to the total heat supplied into the system (include both addition and release of energy in the system). W is the net work done by the system.Hence, the correct option is D.
Answer:
Option D, First law of thermodynamics
Explanation:
The first law of thermodynamics states the following -
[tex]dU = Q-W[/tex]
where dU represents the Heat added to the System
Q represents the Change in Internal Energy OR net heat transfer OR sum of all heat transferred into and out of the system
W represents the Work done on the system
The first law of thermodynamics is based on the application of the conservation of energy principle to heat and thermodynamic.
hence, option D is correct
what is a range of the lowest temperatures found at the top of the tropopause
Answer:
62°F (17°C) to -60°F (-51°C) at the tropopause.
g What basic characteristics do we generally expect to find in all things that qualify as being alive? Question 1 options: 1) an ability to: reason, make polymers and repair damage. 2) an ability to: reproduce, respond to stimuli and repair damage. 3) an ability to: avoid pain, move from one place to another and evolve. 4) an ability to: capture energy from sun light, move from one place to another and reshape its environment. 5) an ability to be more ordered than their surroundings, respond to stimuli, and capture energy from sunlight.
Answer:
Number 2: an ability to: reproduce, respond to stimuli and repair damage.
Explanation:
Some basic characteristics of all living things in general which they all have in common include:
The ability to reproduce (reproduction). All living things reproduce...
Ability to respond to stimuli (irritability)
Ability to repair damage: this is involved with cells in the organisms and to stay alive all organismsin general areade up of cells which has the ability to be repaired if damaged.
There are two types of cell division the first produces cells that are identical to the original cell the second produces cells that are different from the original cell which type of cell division do you think is responsible for these processes
What is the comparison and the differences between the structures of the stomach and the pancreas?
Answer:
Explanation:
The chyme produced from the stomach is highly acidic in nature; the pancreatic juices contain high levels of bicarbonate, an alkali that neutralizes the acidic chyme. Additionally, the pancreatic juices contain a large variety of enzymes that are required for the digestion of protein and carbohydrates.
Which resource is found in large quantities in China and is also imported into China from other countries?
tungsten
pearls
coal
timber
Answer:
Coal
Explanation:
China fulfills its demand for coal by purchasing it from regional neighbors. In 2017, its coal imports mainly came from Australia (79.9 million tons), Indonesia (35.2 million tons), Mongolia (33.5 million tons), and Russia (25.3 million tons).
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The immunity rate is the ____________ variable. The number of people affected by the disease is the ___________ variable.
Answer: 1. independent , 2 . dependent
The immunity rate is an independent variable. The number of people affected by the disease is the dependent variable.
What is immune system?
The immune system protects our body from foreign invaders like bacteria, viruses, and fungi, and other toxins.
In general 2 types of the immune system observed in human body.
The innate immune system rapid inheritable response system consist major organs like skin, the eye's cornea, and the mucous membrane that lines the respiratory, gastrointestinal, and genitourinary tracts.
Secondly, the acquired immune system work with the innate system to make a special proteins named antibodies to protect our body from a specific invader.
Human immune system show variation in their production of immune components like cytokines play critical roles and it vary from person to person.
Hence, The immunity rate is an independent variable. The number of people affected by the disease is the dependent variable.
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e:
Scientists think the earth is approximately how old?
2 billion years
3 billion years
for 4 12 billion years
612 billion years
Scientists think the earth is approximately how old
Answer:
4 billion
Explanation:
Answer:
4 billion
Explanation:
4 billion
Natural selection is an evolutionary mechanism by which
Answer:Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
How is food moved through the gut?
a. By peristalsis c. By waves of liquid
b. By gravity
d. Movement
Explanation:
a. By peristalsis
..................
2.In what way is the plant’s vascular system like ours?
3.How have scientist classified all plants?
4.Give 2 examples of non-vascular plants. (This will take a little extra research.)
5.List the 2 major vascular tissues of a plant and tell what they do.
1.
2.
6.List the reactants and products of photosynthesis?
Reactants:
Products:
7.Both plant and animal cells have organelles. What are organelles?
8.Which organelle is responsible for photosynthesis?
9.Why is it incorrect to say plants “breathe” Carbon dioxide (CO2)?
10.Where would you expect to find plant cell with a high number of chloroplast?
11.What are the stomata and why are they important to the plant?
12.What is the job of the guard cells?
13.The venus fly trap or the pitcher plant are still considered plants. Why do they “eat” insects?
14 Your friend thinks mistletoe is normal plant. How could you explain why it is NOT considered a “normal” plant?
Answer:
2.The human circular system does pretty much the
same thing as a plant but the plant can also reproduce oxygen. The
human needs air so does a plant to live and make more air. The
human needs food so does a plant to stay healthy. The human needs
to drink water to live too so does the plant to stay alive
otherwise it will rot and fall apart.
Explanation:
Help with the picture
Meiosis reduces the chromosome number by
Answer:
i believe it's half and produces four gamete cells
Explanation:
The codon, CAG, is being carried by a mRNA strand into the
cytoplasm. By using the Codon Chart, what amino acid will it code
for?
18. Some groups of organisms work together to stay safe or to take down prey. What do we
call this?
Answer: Mutualistic.
Explanation:
Which of these is most likely to become a carbon film ?
A sea creatures shell
A flowering plant
A tree trunk
Answer:
c- a flowering plant
Explanation:
Which type of cells contain dna
Answer:
Eukaryotic cell contains the genomic linear DNA
Explanation:
There is little food available in ecosystems found near polar ice. True or false
Answer:
false
Explanation:
edge 2021
How long does it take for Earth to make one rotation on its axis? A. 1 day B. 1 month C. 1 hour D. 1 year
Answer- A
Explain- Because in order for the Earth to completly turn around, it takes around 23.8 hrs, which is about 1 day.
Answer:
A. 1 day
Explanation:
It only takes 23 hours, 56 minutes and 4.0916 seconds for the Earth to turn once its axis.
Which of the following statements about oxidative phosphorylation by ATP synthase is FALSE? A) The electrochemical gradient across the inner mitochondrial membrane generated by electron flow is used to synthesize ATP. B) Uncouplers dissipate the electrochemical gradient but electron transport continues without ATP production. C) Inhibitors disrupt electron flow as well as ATP synthesis. D) A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP. E) ATP synthesis occurs via simultaneous conformational changes in protein subunits containing catalytic sites.
Answer
D)A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP
Explanation:
Oxidative phosphorylation reffers to metabolic pathway whereby enzyme is used by the cell to achieve nutrient oxidation, so that chemical energy of molecular oxygen is released as a result of this, adenosine triphosphate (ATP) is manufactured. oxidative phosphorylation is seen in all organisms that are aerobic in nature and it occur in the mitochondria of all eukaryotic organisms. There is electron transfer during oxidative phosphorylation, the electrons moves from the donor to the receptor and this is known as redox reaction, as a result of this energy is released, and this energy is used for formation of ATP.
Therefore,among all the options, A proton gradient alone without a corresponding energy input is not sufficient to drive the synthesis of ATP is the false statement.
What species does the mosquito belong to?
Answer:
Insects
Explanation:
Answer:
flies (order Diptera). Within Diptera they constitute the family Culicidae
Explanation:
When a plant generates food through photosynthesis, this food
A.
is always used as soon as it is converted into a form the plant can use.
OB
can be used immediately or stored for later use.
C.
can cause the plant to gain excess layers of fat.
OD
is stored for a short period of time, usually about three weeks,
Answer:
B:because plant will make the food,store it,or eat it.usually the plant will stored the food for the winter,because of the soil being frozen and barely any sunlight,it will make it hard for the plant to make more food during photosynthesis,sometimes the plants will die but come back when it is springtime.Once food is made it is used or saved for later use for energy.
Answer:
can be used immediately or stored for later use.
Explanation:
Energy generated through photosynthesis can be used immediately or stored for later use depending on the needs of the plant in its environment.
Sometimes, a plant needs to immediately put this energy into growing new branches or leaves. Other times, such as when a cold winter is approaching, it might be better for the plant to store the energy for later use
Select all the following that describe isotopes of an element
_ Different numbers of neutrons
_ Different mass numbers
_ Different atomic numbers
_ Different numbers of protons
Answer: different number of neutrons and different mass numbers
Explanation:
The statements that describe isotopes of an element are:
Different numbers of neutrons.Different mass numbers.What is an isotope?An isotope is defined as varieties of atoms that have the same atomic number and therefore constitute the same element even though they have different mass numbers.
Characteristics of an isotope of an elementAtoms that are isotopes of each other have the same number of protons in the nucleus.They are found in the same place within the periodic table.Therefore, we can conclude that the isotopes of an element are atoms with the same atomic number but different mass numbers.
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If the bubbles given off by the plants were collected and tested, the gas present would MOST likely be
(A) oxygen
(B) hydrogen
(C) nitrogen
(D) carbon dioxide
Answer: D
Explanation: To prove that oxygen is a by-product of photosynthesis, you can set up an experiment with an aquatic plant and capture the gas it emits in response to photosynthesis.
