What is the evidence that glaciers once existed on all of the southern continents?
A.Grooves in the rocks and sediment deposits.
B.Fossil evidence of cold weather species.
C.Radioactive isotopes in the ice cores
D.Large glacial lakes still exist
Answer:
A.
Explanation:
There is also much climate evidence supporting continental drift, most notable of which is glacial activity. Alfred Wegener investigated this field and found an anomaly in the Permo-Carboniferous ice sheet that was found through glacial till deposits to have once covered all the southern major plates.
If a mRNA strand was as follows: UACCAGUUGCGA, how many codons
does it have?
a. one
b. three
c. twelve
d. four
Answer:
Option B) three
I hope this might help u
You are a physiologist on a space flight to a distant planet. You discover intelligent human-like aliens on the planet. You discover that the alien's kidney handles the sugar alcohol mannitol just like our kidneys handle inulin. The data from that experiment are: Plasma level (constant over 24 hrs): 6 g/dL of mannitol 24 hr. urine sample: volume of 2 L, containing 144 g mannitol What is the alien's glomerular filtration rate (in units of ml/min)
Answer:
1.67 ml/min
Explanation:
Glomerular filtration rate (GFR) is the best overall index of kidney function, which determines the amount of blood that passes through the glomeruli each minute. Human kidneys can filter the inulin, but they cannot reabsorb or secrete this polysaccharide, thereby it is an excellent substance to measure the Glomerular filtration rate (GFR) by measuring its excretion from the kidneys. In this case, alien´s Glomerular filtration rate (GFR) can be calculated as the excretion rate of mannitol/plasma mannitol level >>>
GFR = 144 g/1 day x 1 dL/6 g x 0.1 L/1 dL = 2.4 L/1 day
GFR = 2,400 ml/1,440 min = 1.67 ml/min
X-rays _____.
are blocked by the ionosphere
are less dangerous than ultraviolet rays
have very long wavelengths
are not emitted by the sun
Answer:
have very long wavelengths
Explanation:
The first X-ray image was captured by Wilhelm Conrad Roentgen (1895), who accidentally discovered these rays while experimenting with vacuum tubes. X-rays are high-energy electromagnetic radiation with very long wavelengths (in the range of 0.01 to 10 nanometers, nm). They are shorter in wavelength than ultraviolet rays and longer than gamma rays. X-rays have energies ranging from 100 electron-volts (eVs) to 100 kiloelectron-volts (keVs). On the other hand, the radio waves are blocked by the planet's ionosphere and, therefore, they cannot reach the Earth.
Which statement describes a source of new genetic variation in a species?
Answer:
The answer is A. Here is proof. Plz mark brainliest for proof.
Explanation:
If Dr. Jensen has type A blood, what antigens does she have on her red blood cells (RBC)?
How does coastal erosion shape Florida?
PLS ANSWER ASAP
Coastal erosion causes the sea level to rise.
Coastal erosion causes the beach to wear away.
Coastal erosion causes sand to move with longshore currents.
Coastal erosion causes the formation of sinkholes in the ground.
PLEASE HELP
Daylight Savings Time has pros and cons. Do you think the pros outweigh the cons and therefore Daylight Savings Time should continue? Instead, do you think the cons outweigh the pros and therefore Daylight Savings Time should be abolished?
Explain.
Answer:
It should be abolished
Explanation:
It doesn't help anyone. The idea is that people will use less resources but because some people sleep throughout the day and work at night (especially now that we are at home). Its counter intuitive, it used to work but not everything that works for the past, works for the future.
HELP ME ASAP
read the article above and answer the questions below :
1. The part of digestive system that breaks down food with acid is the
A. Teeth
B. Stomach
C. Small intestine
D. Rectum
2. The part of the digestive system where the nutrients in food are absorbed is the
A. Teeth
B. Stomach
C. Small intestine
D. Rectum
3. The processed food that the stomach sends to the intestines is called
A. Chyme
B. Duodenum
C. Both a. and b. above
D. None of the above
4. The most digestion takes place in the
A. Stomach
B. Duodenum
C. Rectum
D. None of the above
5. The food you eat becomes fuel for your
A. Brain
B. Muscles
C. Both a. and b. above
D. None of the above
6. The proteins, carbohydrates, and fats from the food that was eaten travels to cells throughout the body in the
A. Stomach
B. Duodenum
C. Small intestine
D. Blood
What is the correct sequence of events that occur during protein synthesis?
1.mRNA is formed
2.amino acids form polypeptides.
3.a strand of dna segment unwinds.
4.mRNA attaches to ribosomes.
5.tRNA supplies the required amino acids.
Answer:
3, 1, 4, 5, 2
Explanation:
DNA helicase enzyme will unwind DNA into 2 segments for a template. Complementary nitrogenous bases will attach themselves to one of the DNA strands. mRNA carries codons for instructions from DNA. mRNA leaves the nucleus and joins with a ribosome (tRNA) in the cytoplasm. tRNA has anticodons which are complementary to a specific mRNA molecule. tRNA pairs with and translates instructions that the mRNA is carrying. Each amino acid delivered to the ribosome by tRNA begins forming a chain of amino acids, called a peptide bond.
PLZ answer fast will give brainliest!!! Even if you can only answer one of the questions it would be appreciated.
a) Describe the differences between the R groups of the amino acids located in the transmembrane domains and those located in the amino- or carboxy-terminus of TRPV1. Describe the specific location in the cell where TRPV1 protein is synthesized.
(b) The pGoG protein leads to the inhibition of cyclin activity. Explain how this interferes with cell cycle progression.
(c) Researchers discover a mutation that prevents NFAT2 from being phosphorylated. Predict the effect of this mutation on apoptosis by the pathway shown in Figure 2. Provide reasoning to justify your prediction.
(d) The drug cyclosporin A is known to inhibit calcineurin. Researchers claim that cyclosporin A should not be given to patients with cancer. Support the researchers' claim based on the pathway shown in Figure 2.
Answer:
The perception of pain throughout the body arises when neural signals originating from the terminals of nociceptors are propagated to second-order neurons in the spinal cord or brainstem, whereupon they are transmitted to specific higher-order brain areas (Price, 2000). Recent studies have begun to elucidate some of the molecular mechanisms underlying the transduction of noxious stimuli. Many stimuli have been found to activate ion channels present on nociceptor terminals that act as molecular transducers to depolarize these neurons, thereby setting off nociceptive impulses along the pain pathways (Price, 2000; Costigan and Woolf, 2000). Among these ion channels are the members of the transient receptor potential (TRP) family. To date, the most studied member of the TRP family is the TRPV1 receptor. This is because it is the only one activated by capsaicin, the compound in chili pepper responsible for its “hot” taste; also, inhibiting TRPV1 has been shown to have therapeutic value (DiMarzo et al., 2002; Cortright and Szallasi, 2004). Although we will focus on the presence of these channels in nociceptors, we note that they have been identified in many other cell types and in various cortical and subcortical areas (Toth et al., 2005). The transient receptor potential vanilloid 1 (TRPV1) channel is predicted to have six transmembrane domains and a short, pore-forming hydrophobic stretch between the fifth and sixth transmembrane domains (see Figure 5.1A). It is activated not only by the vanilloid capsaicin (Caterina et al., 1997), but also by noxious heat (>43°C) and low pH (Caterina et al., 1997; Tominaga et al., 1998), voltage (Gunthorpe et al., 2000; Piper et al., 1999), and various lipids (Julius and Basbaum, 2001; Caterina and Julius, 2001; Clapham, 2003; Cortright and Szallasi, 2004, Szallasi and Blumberg, 1999; Prescott and Julius, 2003; Jung et al., 2004; Bhave et al., 2003). In cells, TRPV1 is inactivated by its binding to PIP2 and is released from this block by PLC-mediated PIP2 hydrolysis (Prescott and Julius, 2003). TRPV1 is widely expressed in central nervous system (CNS) tissue and highly expressed in sensory neurons of the dorsal root ganglion [19]. This receptor also localizes to neurons that line the oral and nasal cavities [10], where it is found in a subpopulation of sensory afferent nociceptive nerve fibers [20].
(this is for question 1.)
Explanation:
Answer:
see explanation :)
Explanation:
a) R groups in the transmembrane domain should be hydrophobic while R groups in either terminus should be hydrophilic, and the TRPV 1 protein is synthesized on the ribosomes attached to the rough endoplasmic reticulum.
b) Cyclins cannot activate cyclin-dependent kinases which normally phosphorylate other proteins to move the cell through a cell cycle checkpoint.
c) Apoptosis will be induced and if NFAT2 cannot be phosphorylated, it will be able to inhibit ATF3 expression, which which enables activity of pGoG which will induce apoptosis.
d) If Calcineurin is inhibited, then the steps in this pathway that follow from calcineurin activation will be unable to block cell division/induce apoptosis. Since cancer is characterized by excessive cell division, this drug would be an inappropriate treatment for cancer.
What is the pH of a neutral solution? 0 10 14 7
Who was first reported lysosome??? and also in which year
Answer:
Christian De Duve in 1955 discovered the lysosome. He started studying lysosomes in 1949 & finally discovered them in 1955.
does anyone a\have any tips for caring for aloe and/or rose moss? i just got starter kits but i havent really cared for plants before, ty
I know they need lots of sunlight, but it can get sunburnt so be careful. They need to be watered around 3 times a day. Sorry if this isn't what you were looking for!
What does "plate margin" mean?
Answer:
plate margin (plate boundary) The boundary of one of the plates that form the upper layer (the lithosphere) and together cover the surface of the Earth. Plate margins are characterized by a combination of tectonic and topographic features: oceanic ridges, Benioff zones, young fold mountains, and transform faults.
Grafting produces a plant that is a clone of the rootstock.
O True
O False
Answer:
The answer is True.
In a population of birds, the average beak size is favored. What type of selection is this?
a. directional
b. disruptive
c. tabilizing
d. kin
Answer:
C. Stabilizing selection
Explanation:
Natural selection, is of three different types namely: disruptive selection, directional selection and stabilizing selection. Disruptive selection occurs when the two extremes of a population are being favored over the average or intermediate.
Directional occurs when one extreme of a population is favored. However, in STABILIZING SELECTION, the average or intermediate population is favored over both extremes of a population. Example is when the average-sized beaks of a bird population is being favored over the long and short ones (extremes).
Answer:
the answer is stabilizing.
Explanation:
I got it right on my test.
Cytokinesis in animal cells happens when the:
A: cell wall pinches in to separate the cytoplasm.
B: cell plate forms across the middle of the cell.
C: chromosomes line up in the middle of the cell.
D: cell membrane pinches in to separate the cytoplasm.
Answer: D
Explanation:
Cytokinesis is basically the formation of 2 new cells. C describes metaphase and A and B are talking about cytokinesis in a plant cell because animals don't have cell walls or plates. So the right answer has to be D
Page No
Date
What is Science?
As Earth's climate changes, which of the following do scientists expect?
The correct option is (c) Decreased Biodiversity.
The term "biodiversity loss" describes the reduction or extinction of biological diversity, which is defined as the range of living creatures that inhabit the earth. their various degrees of biological organization, their individual genetic variability, and the natural patterns found in ecosystems.What is causing the biodiversity to decline?The variety of all living creatures on our world, known as biodiversity, has been decreasing at an alarming rate in recent years. This decline is primarily attributable to human activities such changing land use, pollution, and climate change.The main direct cause of biodiversity loss is land use change (primarily for large-scale food production) which drives an estimated 30% of biodiversity decline globally.Learn more about Decreased Biodiversity brainly.com/question/18200563
#SPJ2
Evolution shows us that all living organisms have a
Answer:
cell membrane, nucleus, nucleolus, nuclear membrane, cytoplasm, endoplasmic reticulum, Golgi apparatus, ribosomes, mitochondria, centrioles, cytoskeleton, vacuoles, and vesicles.
Explanation:
importance of cycle events
Explanation:
sorry for the handwriting
PLZ I NEED HELP ASAP
Answer:
limiting factor
Explanation:
Answer:
carrying capacity is anything that restricts the number of individuals in a population.
when a single cell of E. coli reproduces it first duplicates it's dna next the cell elongates as each copy of dna is pulled toward opposite ends of the cell the membrane then pinches inward, dividing the cytoplasm into two halves and producing two daughter cells what is true about these daughter cells
Answer:
They are identical
Answer:
They are genetically identical to the parent because they are produced by asexual reproduction.
Hope this helps!
Explanation:
The _____ says that in a series of sedimentary rock layers, the younger rocks are normally on top of the much older rocks.
A) rock theory
B) fossil record
C) law of superposition
D) index fossil
Answer:
C
Explanation:
The law of superposition says that in a series of sedimentary rock layers, the younger rocks are normally on top of the much older rocks.
Which nacromolecules found within cells do not dissolve in water?
A. O carbohydrates
B. O nucleic acids
C. O proteins
D. O lipids
Select a region of the world and explain how its latitude, elevation, geographical
features, and relationship to winds and ocean currents determine its climate.
Answer:
Do you have an attachment to add?
I dont see a map :(
Explanation:
What characteristic can all organisms in the Kingdom Fungi can be described by
Answer:
Eukaryotic
Explanation:
Fungi are eukaryotic, non-vascular, non-motile and heterotrophic organisms. They may be unicellular or filamentous. They reproduce by means of spores. Fungi exhibit the phenomenon of alternation of generation.
How do I solve for this
Answer:
where
Explanation:
Answer:
solve for what
Explanation:
there is nothing attached
why are animals cells important for survival?
The answer in a paragraph!!
Answer:
If there are no animal cells, then life on earth would not exist. Also plants would dominate.
Explanation: