Question 4
What structure is the brain's "thermostat?"
Explain the benefits for the administration of an isotonic solution?
Each of the following medical problems involves a malfunction of an organelle or other cell structure. In each case, identify the organelle or structure involved, and indicate whether it is likely to be underactive or overactive.
a. A girl inadvertently consumes cyanide and dies almost immediately because ATP production ceases.
b. A boy is diagnosed with neonatal adrenoleukodystrophy (NALD), which is characterized by an inability of his body to break down very-long-chain fatty acids.
c. A young man learns that he is infertile because his sperm are nonmotile.
d. A young child dies because her cells lack an enzyme that normally breaks down a membrane glycolipid that therefore accumulated in the membranes of her nervous system.
e. A young child is placed on a milk-free diet because the mucosal cells that line his small intestine do not secrete the enzyme necessary to hydrolyze lactose, the disaccharide present in milk.
Answer:
a. mitochondria, underactive
b. peroxisome, underactive
c. flagella, underactive
d. lysosome, underactive
e. Endoplasmic reticulum/Golgi apparatus/transport vesicles, underactive
Explanation:
Cyanide is a toxic compound that inhibits the Cytochrome c Oxidase I (COI) in mitochondria, which is an enzyme known to catalyze the final step in the mitochondrial electron transfer chain. Adrenoleukodystrophy is an X-linked genetic disease caused by a mutation in the ABCD1 gene (ATP-binding cassette, subfamily D, member 1). ABCD1 encodes the adrenoleukodystrophy protein (ALDP), which is involved in the transport of long-chain fatty acids into peroxisomes. Flagella are cellular structures composed of proteins (microtubules) specialized to carry the male's DNA to the egg cell, i.e., they are responsible for sperm motility. Lysosomal storage disorders (LSDs) represent a group of inherited diseases caused by mutations capable of altering lysosome functions. LSDs are especially associated with defective (abnormal) lysosomal enzymes that are unable to degrade macromolecules such as, in this case, a membrane glycolipid. Finally, lactase is an enzyme produced in small intestine cells. Within these cells, the signal sequence of the preprolactase precursor is cleaved in the endoplasmic reticulum (ER). Subsequently, the protein precursor travels to the Golgi complex for processing (i.e., glycosylation), thereby a mature enzyme (lactase) is generated.
Sugar in DNA is called? Sugar in RNA?
Graphite and diamond are polymorphs of carbon
True or false
Answer:
they are polymorphs
Explanation:
just trust me
Answer:
Graphite and diamond are considered to be polymorphs. The answer is True I am pretty sure. They are made of sheets of carbon I am pretty sure.
What is the next stage after the body plan is established?
Answer:
Origin. 20 out of the 36 body plans originated in the Cambrian period, in the "Cambrian explosion", However, complete body plans of many phyla emerged much later, in the Palaeozoic or beyond.
In the morning, Jorge watched a cartoon about a sarcastic rabbit. Later, in his psychology class, he viewed
the image above and readily identified it as a rabbit instead of a duck. Which of the following best explains
this phenomenon?
Answer:
The correct answer is - priming.
Explanation:
Priming is a phenomenon that explains the behavior of an individual when an individual experiences a certain stimulus that influences response to a subsequent stimulus, unknowingly of the connection. This effect is known as the priming effect.
In this case, watching a cartoon of a rabbit acts as the stimulus that influences the response of identifying the image of duck as a rabbit. He is experienced priming effect.
what is inactive when sleeping
Answer:
parts of your brain including the precuneus, basal forebrain, and basal ganglia are deactivated during sleep.
Explanation:
All three types of worms that undergo asexual reproduction use which process?
binary fission
O budding
fragmentation
O spore formation
Answer:
Budding is the answer to this.
Answer:
budding
Explanation:
During photosynthesis, plants use carbon dioxide and water to make sugars and oxygen. Is this a chemical change? Why or why not?
A cross between a plant with red flowers (R = dominant) and a plant with white flowers (r = recessive) yielded 47 plants with red flowers and 51 plants with white flowers. What are the genotypes of the parent plants? Explain.
A. The results are close to a 1:1 ratio of plants with red flowers to plants with white flowers. Therefore, the genotypes of the parents are Rr and rr.
B. The results should yield plants with red flowers and plants with white flowers in a 3:1 ratio due, so the geneotype of each parent is Rr. The number of offspring was not large enough to produce the expected results.
C. The results differ from the predicted values. Therefore, the genotypes of the parents cannot be determined.
D. The results should show a ratio of 3 plants with white flowers to 1 plant with red flowers, so the genotypes of the parent plants are RR and rr.
Answer:
A. The results are close to a 1:1 ratio of plants with red flowers to plants with white flowers. Therefore, the genotypes of the parents are Rr and rr.
Explanation:
I took the test and got it right.
Blowfly eggs would most likely be found _____.
near the hands and legs
near the nose and mouth
in the hair and clothes
on the extremities
Answer:
near the nose and mouth
Explanation:
I'm 100% sure this is right
Answer:
near nose and mouth.
Explanation:
got it right!
Extra fertilizer in water can cause algae to reproduce and bloom out of control. What type of interaction in the Earth system is this?
Atmosphere-Lithosphere
Hydrosphere-Biosphere
Atmosphere-Biosphere
Hydrosphere-Lithospher
please eaxplain im confused !
The type of interaction in the Earth system between extra fertilizer and algae growth is Hydrosphere-Biosphere.
What are the favorable conditions for algae growth?The favorable conditions for algae growth include minimum sunlight of 10-12 hours a day with an optimum temperature range from 60-80°F.
Fertilizers include the area of biosphere, while water represents the significance of hydrosphere. All the spheres mutually interact with one another for different purposes.
Therefore, the type of interaction in the Earth system between extra fertilizer and algae growth is Hydrosphere-Biosphere.
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Answer: Hydrosphere-biosphere
Explanation: I just took the quiz for it and it's correct : )
If green plant cells are incubated in the presence of CO2 molecules containing radioactive carbon atoms, the fate of the carbon atoms can be followed. In an experiment, radioactive CO2 was given for 1 minute to plant cells, and then the cells were examined after 1, 5, 10, 20, and 30 minutes. The following molecules were labeled with radioactive carbon at some point(s): glucose, glyceralde-hyde 3-phosphate, glycine (an amino acid), 3-phospho-glycerate, ribulose 1,5-bisphosphate, and sucrose.
Required:
List these molecules in the order in which they first become labeled.
Answer:
GlycineRibulose 1,5-bisphosphate3-phosphoglycerateGlyceraldehyde 3-phosphate.GlucoseSucroseExplanation:
The glycine, among other amino acids, helps to improve chlorophyll production and promotes the process of photosynthesis.
Calvin cycle
During the carbon fixation phase, a CO² molecule combinate with a ribulose 1,5-bisphosphate to form 6-carbonated molecules, which will divide into two 3-phosphoglycerate molecules.
During the reduction phase, NADPH donates its electrons to reduce 3-phosphoglycerate molecules, and turn them into glyceraldehyde 3-phosphate.
During the regeneration phase, a glyceraldehyde 3-phosphate molecule leaves the cycle and goes to the cytosol to form glucose. This step can be done when three CO² enter the cycle and produce six glyceraldehyde 3-phosphate molecules. One of them leaves the cycle to form glucose, while the other five are recycled.
Cytosol:
Once in the cytosol, glyceraldehyde 3-phosphate molecules are used to form glucose and fructose. These two molecules are the monosaccharides that form the sucrose.
Once sucrose is formed, it is transported from the photosynthetic tissues to different parts of the plant by the phloem.
What causes currents to move around in circular patterns
Answer: Coriolis effect
Explanation:
Hope this help to your question.
Answer:
Coriolis effects causes wind currents to move in circular patterns.
Explanation:
True or false the carrying capacity is the minmum number of individuals in a species that an environment can support
what are the different characteristics of a single celled organism.
Answer:
Single-celled organisms are able to carry out all the processes of life without help from other cells
How have human populations used surface currents over time?
Answer:
Changes in land use through time with extrapolations
Explanation:
Population data and projections are from UNDP
A scientist performed an investigation involving a reaction that produced Al,(50), How many sulfur atoms are represented in this formula? A 1 atom B 3 atoms с 7 atoms D 9 atoms
Answer: B, 3 atoms
Explanation: The number of atoms for each element in the formula are calculated by looking at the subscripts and the coefficient. The calculation is given as Al atoms =2x1, S atoms = 3x1 and O atoms = 3x4.
In the homeostasis lab we are using ____________________ as a homeostatic parameter.
Answer:
Body temperature
Explanation:
Homeostasis is the a resistance to change due to the body's attempt to maintain constant and stable internal environment. To maintain the body's overall functioning it is very important that homeostasis is maintained at all levels.
Body temperature can be used as homeostasis parameter in the lab. It is important that that the body tries to maintain a constant temperature.
describe how a supernova and neutron star are related?
Answer:
Neutron stars are one of the possible ends for a star. They result from massive stars which have mass greater than 4 to 8 times that of our Sun. After these stars have finished burning their nuclear fuel, they undergo a supernova explosion. ... It collapses so much that protons and electrons combine to form neutrons.
1. What happens to oppositely charged atoms?
Answer:
they go the opposite direction
Which of the following is NOT involved in photosynthesis or cellular respiration?
a
cytokinins
b
chlorophyll
c
carbon dioxide
d
water
Answer:
a
Explanation:
Cytokinins are not involved in photosynthesis or cellular respiration. They are plant hormones that help regulate cell division and growth. On the other hand, chlorophyll, carbon dioxide, and water are all involved in photosynthesis and/or cellular respiration. The correct option is A.
What are Cytokinins?Cytokinins are plant growth hormones that stimulate cell division and delay senescence. They play a role in plant growth and development, but they are not involved in photosynthesis or cellular respiration. On the other hand, chlorophyll, carbon dioxide, and water are all involved in photosynthesis.
Chlorophyll is a pigment that absorbs light energy and converts it into chemical energy, while carbon dioxide and water are used to make glucose and oxygen through the process of photosynthesis.
Cellular respiration is the process by which cells convert glucose and oxygen into energy. Both carbon dioxide and water are produced as byproducts of cellular respiration. Therefore, all the options except cytokinins are involved in either photosynthesis or cellular respiration.
Therefore, the correct option is A.
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What are these please
pls help i need ur guys help pls help me on my science test plsssssssss!
Answer:
1. It can transfer energy through empty space.
Explanation:
What season does the Southern Hemisphere experience when Earth and the Sun are in the positions shown?
fall
spring
summer
winter
Answer:
Explanation:
depends on what time when and where
could be spring ,fall ,or summer
In a cross of purple flowered heterozygous plants (Pp), the letter P represents the allele for purple flowers and the letter p represents the allele for white flowers.
What is the probability that an offspring of this cross expresses plants with purple flower phenotypes?
A. 0
B. 1/4
C. 1/2
D. 3/4
Answer:
D. 3/4
Explanation:
I took the test and got it right.
Which of the following best describes how sedimentary rock forms?
A. Molten rock beneath the surface of earth cools and becomes solid.
B. Layers of sediment becomes compressed overtime to form rock
C. Chemical processes or changes in pressure or temperature change a rock
D. Molten rock reaches the surface and cools to become solid rock.
Answer:
la respuesta B la describe mejor
7. a) How does a vaccine relate to the virus that it protects against? (1 point)
Will be marking brainliest!
Answer:
A vaccine usually is the virus in an altered way, like, most vaccines like the flu shot is a dead flu virus, so by injecting a dead flu virus in your body you learn how to protect yourself from it.
Explanation:
Through the process of transformation, bacteria cells can take up plasmids that contain recombinant DNA
TRUE or FALSE
Answer:
true
Explanation: