Answer:
It is because of the axis it is on!
Explanation:
In fact, in the Northern Hemisphere, the orbit of the earth takes us further from the sun in summer. Summer is hotter than winter due to the tilt in the axis of the earth of 23 degrees. ... – the sun is higher in the sky, meaning more sunlight shines on the earth more directly.
which is the best description for why skeletal muscle stores glycogen
Answer: Skeletal muscle is a heavy consumer of energy.
A segment of a DNA strand is shown
3’ AGGTCAGGT 5’
Which of these is the correct complementary DNA strand for the segments shown?
A)5’ AGGYCAGGT 3’
B)5’ ACCUGAGGU 3’
C)5’ TGGACTGGA 3’
D)5’ TCCACTCCA 3’
Answer:
5’ TCCAGTCCA 3’
Explanation:
The correct complementary DNA strand for segment 3’ AGGTCAGGT 5’ is 5’ TCCACTCCA 3’. Thus, the correct option for this question is D.
What is a Complementary DNA strand?A complementary DNA strand may be defined as a type of DNA strand in which the series of the constituent molecules on one strand of the double-stranded structure is chemically similar to the sequence on the other strand.
According to Chargaff's rule, the complementary DNA strand is formed with the concept of base pairing, where Adenine is complementary to Thymine and cytosine is complementary to Guanine.
Due to this, A=T, G=C, G=C, T=A, C=G, A=T, G=C, G=C, and T=A. This matches option four given in the question.
Therefore, the correct complementary DNA strand for segment 3’ AGGTCAGGT 5’ is 5’ TCCACTCCA 3’. Thus, the correct option for this question is D.
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Manure is carried by rainwater from land to a river. This is an example of what
A. Single pollution
B. Multiple pollution
C. Non point source pollution
D. Point source pollution
Answer:
C. Non point source pollution
Explanation:
Non point source pollution occurs when rain and snowmelt pollute rivers, streams, lakes, marshes, and groundwater. Therefore, option (C) is correct.
What is Non point source pollution?A distributed contamination of water or air that does not originate from a single discrete source is referred to as nonpoint source pollution. The presence of this kind of pollution is frequently the result of the accumulation of the effects of smaller amounts of contaminants that have been gathered from a larger area.
Oil, pet waste, pesticides, herbicides, fertilizer, road salt, bacteria, silt, and any other contaminant that ends up on the ground naturally or as a result of human activity are all examples of nonpoint source pollution. Nonpoint source pollution arises from diffuse sources.
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1
The diagram below represents a food chain in a garden.
Rose
Greenfly
Ladybird
Blackbird
A food chain in a garden
1.1
Name the organism above that represents the following:
(a) Herbivore
(b) Producer
(1)
(1)
1.2
A rose bush contains 1 000 kJ/m2 /year of energy and only 10% of this
energy is passed on at each trophic level of the food chain. How much
energy will be passed on to the blackbird? Show ALL your calculations.
(4)
1.3
If all the greenflies in this garden were removed, explain what would
happen to the populations of the following:
(a) Rose plants
(b) Ladybirds
(C) Blackbirds
(2)
(2)
(2)
(12)
Answer:
The correct answer is -
1.1 A. herbivore - greenfly
b. producer - rose
1.2. 1 kJ/m2/year
1.3 rose plants will increase, ladybirds will decrease, blackbirds will decrease.
Explanation:
In this food chain,
Rose >>Greenfly >>Ladybird >>Blackbird
Rose plants are the producers as they generate their food and energy and does not depend on other organisms where as greenfly are the primary consumer or herbivore as they depend on the rose plant for their food and energy only, however, ladybird as secondary consumer and blackbird as tertiary consumer depend on greenfly and ladybird respectively.
If rose plants have 1000 kJ/m2 /year of energy and as it is known that only 10% moves to the next tropic level then blackbird would have:
rose = 1000
greenfly = 1000*10/100= 100 kJ
ladybird = 100*10/100 = 10kJ
blackbird = 10*10/100 = 1 kJ
If greenfly removes from here the rose plant will increase as these depends and eat rose plants and lady bird will decrease as these are the primary source of food for lady bird and if ladybird decrease blackbird also decrease.
Received information is called a transduced signal because: _________.
a. it is then converted into other chemical forms.
b. it is then converted into other electrical forms.
c. this process often has many steps of information conversion.
d. it is then converted into other chemicals during metabolism.
e. many different molecules form a signaling cascade.
Answer:
The correct answer is - e. many different molecules form a signaling cascade.
Explanation:
Signal transduction is the number of events that take place inside the body of a human from the external atmosphere to transmitting a chemical or physical signal through a number of molecular events of signaling cascade.
The transmission of the particular chemical or physical signal is caused a sequence of phosphorylation events inside the cell it involves specific protein receptors and different types of molecules.
Only 1% can solve the question
Answer:
a. the blood pressure decreases. the bblood in the A that is the artery is higher as the artery carries the oxygenated blood which is directly pumped out of the heart.so the artery's pressure is higher where as the capillaries pressure decreases when compared with artery. the blood in the capillary flows slowly and smoothly as capillary needs time to exchange the substance between the body cells and the blood. the vein carry the deoxygenated blood back to the heart so their pressure is low.
b.the highest pressure is found in the artery because it carries the oxygenated blood and the heart pump the blood with great force thus tge artery have the highest pressure . and it also wanted to transport the oxygen quickly to other parts of the body.
c. valves. these prevent the backflow of the blood in capillary as the blood moves against the gravity.so valves prevent the blood from going back . therefore the valves help the blood in veins to move back to heart. (not sure)
why can the plant grow new parts but we cannot?
Answer: because, humans can't/don't regenerate in the same way
Explanation:
Plants excel in regenerating new parts due to factors like meristematic tissues, totipotency, indeterminate growth, and unique genetic traits. These enable continuous cell division, organ regeneration, and lifelong growth, while human regenerative abilities are more limited and specialized.
Plants have the remarkable ability to grow new parts due to their unique characteristics and physiological processes. While humans and other animals also have the ability to regenerate certain tissues and organs. Here are a few reasons why plants can grow new parts more effectively:
Meristematic Tissues: Plants have specialized regions called meristems that contain undifferentiated cells capable of continuous division and differentiation. These meristematic tissues are found in areas such as the tips of roots and shoots, allowing for continuous growth and regeneration. In contrast, humans have limited areas of active cell division, such as the bone marrow and the skin's basal layer, which restricts our regenerative capacity.
Totipotency: Plant cells have a higher degree of totipotency, meaning they have the potential to differentiate into various cell types and give rise to a whole plant. This property allows plants to regenerate entire organs, such as roots, stems, leaves, and even whole plants from small tissue pieces. In humans, cell differentiation is more specialized and limited, making it challenging to regenerate complete organs.
Indeterminate Growth: Most plants exhibit indeterminate growth, meaning they can grow throughout their lifespan. This continuous growth allows plants to replace damaged or lost parts by generating new tissues and organs. In contrast, humans and animals typically have determinate growth, where growth ceases or significantly slows down after reaching a certain size or age.
Hence, plants grow, but humans can't grow.
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The activity of the pyruvate dehydrogenase complex is also controlled by phosphorylation. Pyruvate dehydrogenase kinase (PDH kinase) catalyzes the phosphorylation of a specific Ser residue on the E1 subunit of the enzyme, rendering it inactive. Pyruvate dehydrogenase phosphatase (PDH phosphatase) reverses the inhibition by catalyzing the removal of this phosphate group. The PDH kinase is highly regulated and its activity is influenced by various cellular metabolites. Indicate whether the following would activate or inhibit PDH kinase:
Inhibit or activate PDK?
NAD+ activate
NADH inhibit
coenzyme A activate
acetyl-CoA inhibit
ADP inhibit
Did I answer these correctly?
Answer:
Increase in [NAD+] inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Increase in [NADH] activates Pyruvate dehydrogenase kinase (PDH kinase)
Coenzyme A inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Acetyl-co A activates Pyruvate dehydrogenase kinase (PDH kinase)
ADP inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Explanation:
Pyruvate dehydrogenase kinase, PDK is an enzyme which acts to inhibit the activity of the enzyme pyruvate dehydrogenase by phosphorylating it using ATP. It mechanism of action is by catalyzing the phosphorylation of a specific Ser residue on the E1 subunit of the pyruvate dehydrogenase complex, rendering it inactive. By inhibiting the activity of the pyruvate dehydrogenase complex, PDK will decrease the oxidation of pyruvate to acpcetyl-coA and CO₂ in the mitochondria and increase the conversion of pyruvate to lactate in the cytosol.
Since pyruvate dehydrogenase complex is activated by either an increase in the concentration of one or more of ADP, NAD+ or CoA-SH, its inhibitor pyruvate dehydrogenase kinase is inhibited by ADP, NAD+, CoA-SH and pyruvate. However, PDK is activated by increase in the concentration of ATP, NADH and acetyl-CoA.
Therefore, the correct answers are:
Increase in [NAD+] inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Increase in [NADH] activates Pyruvate dehydrogenase kinase (PDH kinase)
Coenzyme A inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Acetyl-co A activates Pyruvate dehydrogenase kinase (PDH kinase)
ADP inhibits Pyruvate dehydrogenase kinase (PDH kinase)
where they execute important functions. The polypeptide chain of these proteins must cross the lipid bilayer. This presents a problem because the peptide bond is polar in nature. It turns out that in virtually all cases where an amino acid chain crosses a lipid bilayer it does so as an alpha helix. Suggest a reason why this is the case. (5 points)
Answer:
In this case, it is likely that the polypeptide chain assumed an alpha helix configuration because the lipid bilayer did not have beta-barrel proteins.
Explanation:
A polypeptide chain is naturally polar, however, a lipid bilayer is naturally non-polar. This makes it difficult and even prevents the polypeptide chain from crossing a lipid bilayer, since the composition of these two elements does not allow them to mix. In that case, the polypeptide chain has two options to take to successfully cross the lipid bilayer.
The first option that the polypeptide chain has is to allow the creation of twisted beta sheets in the shape of a closed barrel in its structure. This only works if the lipid bilayer has beta barrel proteins in its composition to act as a transport channel for the polypeptide chain. However, few lipid layers have this protein.
Most likely, the polypeptide chain assumes an alpha helix conformation to cross lipid bilayers that do not have beta-barrel proteins. By assuming the beta conformation, the polypeptide chain reinforces the hydrogen bonds present in its composition, allowing it to cross the lipid bilayer without having its conformation and structure disassembled.
Is hair a good source of criminal evidence, explain your answer?
Answer:
yes
Explanation:
Hair contains DNA of the criminal. DNA is unqiue to everyone, no one is ever simialr in DNA to eachother. So if a hair sample is found, then testing it would provide a great piece of evidence.
Answer:
yes because if the body is unditfied they can always take a hair sample and run it but if it is the killers they run it to see if it has dna strands and then if they find something they will get the suspect in and take a piece of their hair to see if it is the perfect match
Explanation:
Give me five examples of melting
Answer:
1. Ice cube melting into water.
2. Melting butter into a hot pan.
3. Melting of candle.
4. Melting of steel.
5. Melting water into steam (gas).
Hope this helps!
Answer:
Icecream and popsicles melt easily and fast on the hot summer day.
The hot fresh slice of bread made the butter melt smoothly as it was spread.
When it snows the kids put out their hands out to catch the chilly little snowfalkes and watch them quickly melt away.
To make the fine pieces of decorative glass, you must melt the glass and work with it very quickly, once it starts to get cold, it can easily break.
As the warm candle burns and fills the room with its alluring scent, the wax melts away to reveal more of the candle wick.
Every organism needs energy to survive. A process in which oxygen is combined with the
breakdown of sugar (glucose) molecules, releasing energy and giving off carbon dioxide and
water, is known as which of the following reactions?
a. Transpiration
b. Cellular Respiration
C. Carbon Fixation
d. Photosynthesis
The gastrointestinal tract is absent in
Which of the following is the best explanation of the physiological reaction to the length of daylight hours often referred to as photoperiodism? Group of answer choices Plants will only flower during long day periods when the day length exceeds their necessary photoperiod. Plants are able to respond to photoperiodism, but animals are not. Migration is triggered by temperature change and not by photoperiodism. Hibernation is often triggered by photoperiodism.
Answer:
A. Plants will only flower during long day periods when the day length exceeds their necessary photoperiod
Explanation:
Photoperiodism is a phenomenon that refers to the response of an organism to the length of day. This phenomenon causes a physiological change in the organisms involved (plants or animals). However, the best studied example of change caused by photoperiodism is that of FLOWERING IN PLANTS.
Different plants flower at different times in response to the day length. Certain plants called LONG DAY PLANTS e.g. spinach and potato etc only flower when the length of day exceeds their photoperiod (threshold), which is usually 12 hours. These plants require very short periods of darkness to flower.
Hence, according to the question, FLOWERING response in plants is the best explanation to describe photoperiodism.
What does photosynthesis produce?
Answer: cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen
Explanation:
i hope this help
Products that can be broken down by biological processes are considered
Answer:
The substance which can be easily decomposed by natural decomposers is called as biodegradable wastes such as humans and animal excreta, plant wastes.
Explanation:
because am cool
Answer:
it. can be biodegradable hope this helps
Why is a shell considered to be biotic?
A shell is considered as biotic (living) because it is a hard, rigid covering of many animals such as snail, sepia, pila, turtles, sea urchins. A shell is protective outer layer of these soft bodied animals.
If the amino acids glycine, alanine and valine were combined in one molecule, what would the molecule be called?
Answer:
A tripeptide
Explanation:
Alanine (Ala), Glycine (Gly) and Valine (Val) are amino acids, i.e., organic molecules that contain at least an amino (–NH2) and one carboxyl (–COOH) functional group. The amino acids held together by peptide bonds, which are formed by a carboxyl group of one amino acid and an amino group of another one, in order to form a peptide. Thus, a tripeptide is a peptide composed of three amino acids joined by two internal (and sometimes three) peptide bonds. In the case above described, the tripeptide formed by the binding of Glycine, Alanine, and Valine can be abbreviated as Gly-Ala-Val (i.e., in this order).
All organisms in the kingdoms Priotista, Plantae, Fungi, and Animalia are
Answer:
Eukaryots.
They have a well defined nucleus and memebrane bound organelles.
Select all the correct answers.
When people run quickly, they can sweat profusely. Their muscles undergo movement, and the loss of energy takes place. Based on this description, in which two ways is energy conserved when people run?
Heat energy is released from the body to the surroundings.
Heat energy is taken from the surroundings to the body.
Chemical energy is converted to mechanical energy that’s used for muscle movements.
Radiant energy is converted to mechanical energy that’s used for muscle movements.
Heat energy is converted to mechanical energy that’s used for muscle movements.
Answer: Chemical energy is converted to mechanical energy that’s used for muscle movements.
Heat energy is converted to mechanical energy that’s used for muscle movements.
Explanation:
According to the I law of thermodynamics, energy can neither be created cannot be destroyed but it can only change its form. In the given situation, the energy can only be conserved when it is not lost to the environment. The chemical energy is produced in the body in the form of ATP which is converted into mechanical energy to allow the movement of the muscles during running. So, chemical energy is converted into mechanical energy by this way. The heat energy when directly converted into mechanical energy to induce the movement of muscles the energy will remain conserved and will not lost to the environment.
Answer:
Chemical energy is converted to mechanical energy that’s used for muscle movements.
Heat energy is converted to mechanical energy that’s used for muscle movements.
Explanation:
Search in the internet a picture that demonstrates a skill in harvesting/capturing animal/fish?. Paste the picture below.
Look at the graph below. Which of the following stars is most likely to be red? (5 points) a Star A b Star B c Star C d Star D
Answer:
????
Explanation:
Hey! I hope you had a great day so far :)
But uh...
I cannot answer that question for you.
There are no "stars" and definitely no graph on a file attached.
Sorry!
Helper's Message:
Hey, I hope you can give me a Brainliest :)
-ChocoChocoCho
Answer:
?????
Explanation:
you didn't add the graph but I'm sure that you will figure the answer out I believe in you. have a great day and 2022
Denitrifying bacteria _____.
are part of the carbon-oxygen cycle
absorb oxygen from the atmosphere
release nitrogen into the atmosphere
break down nitrogen into ammonia
If individuals from box 1 and box 4 were crossed, what would be the genotypes of the
offspring?
F. all Bb
G. Bb and bb
H. BB and bb
I. BB and Bb
Guys, please take a look at this. I know that the answer is NOT A.
Answer:
C
Explanation:
There are 4 zeros, which fits the "at least three" criteria.
X plus a number means the root is negative on the graph, so all roots are negative.
(x+3) occurs twice meaning it has a multiplicity of 2.
Chemical Reactions in Life Quick Check
What is photosynthesis? (1 point)
o a chemical reaction plants use to release energy from food
O a chemical reaction plants use to create water
a chemical reaction plants use to create new atoms
o
a chemical reaction plants use to create food
a chemical reaction plants use to create food
What is the characteristic of the sympathetic division of the autonomic nervous system?
A) Stimulates Digestion
B) Dilates the Bronchi
C) Slows the heartrate
D) Converts Glucose to Glycogen
Look at the H-R diagram. Which area of the diagram represents the white dwarfs?
Answer: Area z
Explanation:
Please help me !
What is an example of two species working agains each other in an ecosystem??
Thank you!
Answer:
just think of the food chain
Explanation:
example the lion and the antelope
common leaves dichotomous key lab report
Answer:
.
Explanation:
Infinity of biology
Answer:
Origin: L. Infinitas; pref. In- not – finis boundary, limit, end: cf. F. Infinite. See Finite.
1. Unlimited extent of time, space, or quantity; eternity; boundlessness; immensity. There can not be more infinities than one; for one of them would limit the other. (Sir W. Raleigh)
2. Unlimited capacity, energy, excellence, or knowledge; as, the infinity of god and his perfections.
3. Endless or indefinite number; great multitude; as an infinity of beauties.
4. (Science: mathematics) a quantity greater than any assignable quantity of the same kind.
Mathematically considered, infinity is always a limit of a variable quantity, resulting from a particular supposition made upon the varying element which enters it.
5. (Science: geometry) That part of a line, or of a plane, or of space, which is infinitely distant. In modern geometry, parallel lines or planes are sometimes treated as lines or planes meeting at infinity. Circle at infinity, an imaginary circle at infinity, through which, in geometry of three dimensions, every sphere is imagined to pass. Circular points at infinity. See Circular.
Explanation: