Answer:
Source
Explanation:
Respiration, which occurs in all living organism, is the metabolic process by which organisms obtain energy (ATP) via the breakdown of their food substances.
The process of respiration in plant and animal cells is similar in the sense that reactants and products for respiration are exactly the same for both cells. The reaction is as follows:
C6H12O6 (glucose) + 6O2 = 6CO2 + 6H2O
The difference between this process in plant and animal cells is the SOURCE of the glucose or food molecule that is broken down. Plants get their food from PHOTOSYNTHESIS (autotroph) while animals get theirs by feeding on other organisms (heterotroph).
Which product is typically made using softwood?
Answer:
Explanation:
The answer is furniture
Which factors were determined to directly cause the loss of skin pigmentation in humans as a result of natural selection?
(1 point)
1. a change in the diet of human populations as they settled in colder climates
2. the clothing worn by humans in the early 8th century
3.the interaction of human populations with predators in colder climates
4.the impact of UV radiation on folate and Vitamin D levels in human populations
Answer: The answer is 4
Explanation:
Vitamin D controls your skin pigment. It's kind of like when someone has an iron deficiency they get bruises and they turn a whiter shade.
Hope I helped :)
The factors that were determined to directly cause the loss of skin pigmentation in humans as a result of natural selection are the impact of UV radiation on folate and Vitamin D levels in human populations.
Ultraviolet B radiation produces diet D in human skin. Ultraviolet radiation can, however, smash folate. Folate is critical for the speedy increase of cells, particularly at some point in which its deficiency can motivate neural tube defects. The human frame additionally has a mechanism to save you overproduction of vitamins.
What is UV radiation?Ultraviolet is a shape of electromagnetic radiation with a wavelength from 10 nm to four hundred nm, shorter than that of seen light, but longer than X-rays. UV radiation is found in sunlight and constitutes approximately 10% of the whole electromagnetic radiation output from the Sun.
Thus it is learned that the above answers are well-explained factors that were determined to directly cause the loss of skin pigmentation in humans as a result of natural selection bout.
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Which of the following best describes succession
The evolution of species through natural selection to become different species
over time
The dranzes in species composition in a community over time as species
colonize an area
The reduction in Bioteesias o men over time
The creation of new e from nothing in an ecosystem
All of these are a good description of secession
Answer:
the greating new form ide
Which phase of cell division is shown?
anaphase II
telophase I
telophase II
prophase I of meiosis
Answer:
Anaphase II
Explanation:
I took the test
Which component of skin protects against UV light? (1 point)
O sweat glands
O melanin
O epidermis
O vitamin D
Answer:
Melanin
Explanation:
Melanin is the protective component of skin that defends us against UV light.
UV light poses big risks to our health, as it can damage DNA. DNA damage can lead to cancers like skin cancer.
Melanin is a pigment in the skin that protects us from UV light. This pigment blocks UV radiation from entering our skin and damaging our DNA.
So, the correct answer is melanin.
Answer:
1. melanin
2. moving away from the equator
3. the impact of UV radiation on folate and Vitamin D levels in human populations
4. A change in one variable produces a change in the other.
5. less predation
Explanation:
100% Good luck xd ♡
Color and Natural Selection Quick Check
A squirrel has 40 chromosomes in a somatic cell.
a. How many homologous pairs are found in a diploid cell?
b. How many single chromosomes (unreplicated) are found after the Sphase?
c. How many chromosomes are present in one cell at the end of meiosis II?
d. How many chromatids will be found at the beginning of meiosis I?
e. How many cells will be produced at the end of meiosis II?
f. How many tetrads will form in mitosis?
Answer:
How many homologous pairs are found in a diploid cell? 22 pairs
b. How many single chromosomes (unreplicated) are found after the Sphase? 46 chromosomes
c. How many chromosomes are present in one cell at the end of meiosis II? 15 chromosomes
d. How many chromatids will be found at the beginning of meiosis I? 92 chromatids
e. How many cells will be produced at the end of meiosis II? four
f. How many tetrads will form in mitosis? 23 different tetrads
Explanation:
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water is a polar compound because it exhibits____charges
Answer:
I think it is negative charges
Explanation:
hope this helps :)
Different species of bumblebee compete for flower nectar in their ecosystem.
a. True
b. False
How were the mountains surrounding the Canyon formed?
Which of the following best describes plants of the family poaceae?
Answer:
Parallel veins in the leaf
Explanation:
The leaf veins run parallel to one another.
Helpppppppo help help help help help help
Answer:
True
Explanation:
Cilia are essential for movement of paramecia.
Answer:
true
Explanation:
they do have cilia that helps them move
How does the movement of muscles attached to the ribcage and diaphragm initiate expiration? (3 points)
a
The muscles relax, which which flattens the diaphragm and increases the volume of the chest cavity.
b
The muscles relax, which pulls the ribcage downward and decreases the volume of the chest cavity.
c
The lungs contract and push the air from the lungs.
d
The lungs relax and pull the air into the lungs.
Answer: b
The muscles relax, which pulls the ribcage downward and decreases the volume of the chest cavity.
Explanation:
In animal cells,____are important for cell division and reproduction because they organize the spindle upon which the cell's
chromosomes are pulled apart.
A) vacuoles
B) lysosomes
C) centrioles
D) ribosomes
How many layers are in a gram positive cell wall and how many are in a gram negative cell wall ?
The cell wall of gram-negative bacteria is thin (approximately only 10 nanometers in thickness), and is typically comprised of only two to five layers of peptidoglycan, depending on the growth stage. In gram-positive bacteria, the cell wall is much thicker (20 to 40 nanometers thick).
what is the hereditary process and why is it important to living organisms?
Answer:
Heredity is important to all living organisms as it determines which traits are passed from parent to child. Successful traits are more frequently passed along and over time can change a species. Changes in traits can allow organisms to adapt to specific environments for better rates of survival.
Explanation:
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Answer:
heredity is important to all living organisms as it determines which traits are passed from parent to child. Successful traits are more frequently passed along and over time can change a species. Changes in traits can allow organisms to adapt to specific environments for better rates of survival
In DNA, what base pairs with guanine?
adenine
cytosine
thymine
guanine
What type of pollination creates hybrids?
Answer:
Cross-pollination
Explanation:
what is cell y and cell x
Answer:
Humans and most mammals have two sex chromosomes, the X and Y. ... Egg cells all contain an X chromosome, while sperm cells contain an X or a Y chromosome. This arrangement means that during fertilization, it is the male that determines the sex of the offspring.
Explanation:
hope that helped
A virus that can switch from the lysogenic cycle to a lytic cycle is called
o transformation.
o latency.
o phage conversion.
o temperate.
o injection.
Animals use energy from their food to do all of the following , except
A. move
B. complete photosynthesis
C. repair their bodies
D. grow
A red flowered plant (RR) is crossed with a white flowered plant (WW) and produces plants with pink flowers (RW). If two pink flowered plants are crossed, what color offspring could be produced
Answer:
It would be 100 % pink.
Explanation:
Pink and Pink make Pink. Just as Red and White make Pink.
Due to incomplete dominance, when two pink flowered plants are crossed, the color of offspring could be 1Red: 2Pink :1White.
What is incomplete dominance?In some cases it happens that a certain characteristics does not match with either of their parents, rather it shows new traits.For example: snapdragon.When parent generation of red flowered plant (RR) is crossed with a white flowered plant (WW), F1 produces plants with pink flowers (RW). it does not resembles either of their parents.And when F1 was self pollinated: RW x RW, it produces 1 RR: 2RW: 1WW.Hence, the offspring will be 1 Red flowered plant: 2 Pink flowered plant :1 White flowered plant.
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3SPJ2
Transcribe the following sequence.
5' TCGGCGCTATACTTT 3
b. What enzyme does transcription?
explain how all the layers of earth are necessary to create life on the surface
Answer:
The layers of Earth provide geologists and geophysicists clues to how Earth formed, the layers that make up other planetary bodies, the source of Earth's resources, and much more.
Explanation:
Hope it helped!
Name three functions of the hormone epinephrine
Examples of organelles
Answer:
Nucleus, mitochondria, cell membrane, ribosome, golgi body
Explanation:
I had a room full of 666 cockroaches which included 24 albinos. These albinos were so scary looking that I squashed them with a heavy piece of metal over and over again until they were a pile of left over exoskeleton and fluid and let the remaining cockroaches breed. The next generation of these horrid little baby cockroaches totaled 13,485. Assuming that the allele for albinism is recessive and we are still in equilibrium, how many recessive alleles are there in the population. (round to the nearest WHOLE number... 1.234 rounds to 2... there is no such thing as .234 of an organism)
Answer:
Number of albino cockroaches = 486 cockroaches
Explanation:
Assuming that the population is in Hardy-Weinberg equilibrium and that albinism is recessive, the Hardy-Weinberg equation is used to determine the frequencies ofnthe different alleles in the population
According to the Hardy-Weinberg equation : p² + 2pq + q² = 1
Also p + q = 1
Where p² is the frequency of cockroaches having similar alleles for the dominant trait;
2pq is the frequency of individuals with the heterozygous allele, while q² is the frequency of the individuals having similar allele the recessive trait, albinism.
q² = 24/666
q² = 0.036
Since, the frequency of albinism in the population 0.036, number of individuals with the recessive allele, that is albino cockroaches in the next generation is obtained by multiplying the frequency with the number of individuals in the next generation.
Number of albino cockroaches = 0.036 × 13485
Number of albino cockroaches = 486 cockroaches
Determine the direction of blood flow through the chambers, vessels and valves of the heart and lungs. Summarize your findings below beginning with oxygen-poor blood from the body entering the heart and ending with oxygen-rich blood leaving the heart to re-supply the body. 1 Vena cavae (vessels) 8 (vessels) 2 Right atrium (chamber) 9 (chamber) 3 (valve) 10 (valve) 4 (chamber) 11 (chamber) 5 (valve) 12 (valve) 6 (vessels) 13 (vessels) 7 Through the lungs (O2 picked up) 14 Through the body (O2 released)
Answer:
1 Vena cavae (vessels)
2 Right atrium (chamber)
3 Tricuspid valve (valve)
4 Right ventricule (chamber)
5 Pulmonary valve (valve)
6 Pulmonary artery (vessels)
7 Through the lungs (O2 picked up)
8 Pulmonary veins (vessels)
9 Left atrium (chamber)
10 Mitral valve (valve)
11 Left ventricle (chamber)
12 Aortic valve (valve)
13 Aorta (vessels)
14 Through the body (O2 released)
Explanation:
The oxygenated blood travels through the arteries distributing oxygen to the cells. Then the deoxygenated blood goes through the veins and to the heart and the lungs.
The deoxygenated blood enters the heart through the vena cavae. From there, it goes to the right atrium. The accumulation of blood in the right atrium opens the tricuspid valve, and the blood goes to the right ventricle. Between the right ventricle and the pulmonary vein, it is the pulmonary valve. The valve stops blood from going back to the ventricle once it is in the pulmonary artery. The pulmonary artery carries the blood to the pulmonary arterioles and these to the pulmonary capillaries, where the blood picks up oxygen and releases carbon dioxide. This process happens in the lungs.
Once that the blood has oxygen, it goes from the capillaries to the pulmonary venules. Then, to the pulmonary vein. The pulmonary vein brings the blood to the left atrium, then it goes through the mitral valve and flows to the left ventricle. Between the left ventricle and the aorta, it is the aortic valve. A valve that stops the blood from going back to the ventricle once it went to the aorta. From the aorta, the oxygenated blood goes to the rest of the body.
Bumblebees show some ability to control their own body temperature. During cold weather, bumblebees have been observed warming their flight muscles by shivering. The bees are able to maintain a body temperature several degrees above that of the surrounding air. Regulation of their internal body temperature is an example of A. diffusion B. synthesis C. respiration D. Homeostasis
Answer:
D. Homeostasis
Explanation:
An endocrine system refers to a series of ductless glands and organs responsible for the production and secretion of hormones that are used by the body for the performance of various functions such as metabolism, controlling growth, reproduction, mood, sleep, etc. These hormones are secreted directly into the circulatory system (blood) and then transported to the organs and tissues in the body.
Basically, the endocrine system contributes significantly to the state of homeostasis in the body.
Homeostasis can be defined as a process through which a living organism maintains a steady or stable physical, internal and chemical environment that is ideal to enhance life and proper functionality.
Hence, regulation of the internal body temperature of the bumblebee is an example of homeostasis.
Answer:
Homeostasis
Explanation:
The element carbon has multiple bonding patterns. Which bonding pattern cannot be formed by carbon?
A. CC
B. C-C-C
C.C.C.C
D. C=C=C
Answer:
D
Explanation:
Because there is only one carbon it says they are equal
A. CC and C. C.C.C
Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds.When it bonds only with hydrogen, it forms compounds called hydrocarbons. Carbon can form single, double, or triple covalent bonds with other carbon atoms.A carbon atom can form the following bonds:
Four single bonds. One double and two single bonds. Two double bonds. One triple bond with one single bond.In options, B and D there are single and double formation between carbon atoms. Thus these are correct bonding patterns.
Therefore, bonding pattern cannot be formed by carbon is option A and C.
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Gene mutations can be caused by many things. These mutations are biologically important because they
can be passed to the offspring if they occur in any cell of the body
can result in a new variety of gene combinations in the species
are always harmful and therefore help to eliminate weak traits
occur at a regular rate and therefore can be controlled
Answer:
Can result in a new variety of gene combinations in the species
Explanation:
The third option is blatantly untrue- gene mutations are sometimes harmful, usually mundane and do nothing, and sometimes extremely helpful.
The fourth option is also untrue- genetic mutation is completely random.
This leaves us with the first two-
The first option is true, but it's not why genetic mutations are important, it's simply how they are passed on.
The second option is the awnser because gene diversity is extremely important in populations, and 'variety of gene combinations' is just another way to say gene diversity.
