Answers
Answer:
contraction and relaxation of the heart
Explanation:
Related Questions
What does carrier mean
Answers
Answer:
a large warship that carries planes and has a long flat deck for takeoffs and landings
Explanation:
a person or thing that carries, holds or conveys something.
Help me on this please
Answers
Explanation:
A.
The transpiration stream that passes through a plant may follow an apoplastic route, with low resistance to flow, or a cell-to-cell route, in which cellular membranes impede water flow. However, passage of water through membranes can be facilitated by aquaporins thereby decreasing resistance. We investigated the relationship between transpiration, which can be down-regulated by abscisic acid (ABA) or by high humidity, and the osmotic water permeability (Pos) of protoplasts. By using leaf protoplasts of wild-type (wt) Arabidopsis thaliana plants and of mutants that are low in ABA (aba1) or insensitive to ABA (abi1 and abi2), we found that protoplasts from aba1 and abi mutants have very low Pos values compared with those from wt plants when the plants are grown at 45% relative humidity. High values of Pos were found 3 h after the addition of ABA to the culture medium of aba1 plants; addition of ABA to abi plants did not restore the Pos to wt levels. There was no such increase in Pos when excised leaves of aba1 plants were treated with ABA. When the transpiration stream was attenuated by growing the plants at 85% relative humidity, the Pos of protoplasts from all plants (wt and mutants) was higher. We suggest that attenuation of the transpiration stream in whole plants is required for the up-regulation of the Pos of the membranes, and that this up-regulation, which does not require ABA, is mediated by the activation of aquaporins in the plasma membrane.
B.
The influence of abscisic acid (ABA) on carbon metabolism, rate of photorespiration, and the activity of the photorespiratory enzymes ribulose bisphosphate oxygenase and glycolate oxidase in 7-day-old barley seedlings (Hordeum vulgare L. var. Alfa) was investigated. Plants treated with ABA had enhanced incorporation of labeled carbon from 14CO2 into glycolic acid, glycine, and serine, while 14C incorporation into 3-phosphoglyceric acid and sugarphosphate esters was depressed. Parallel with this effect, treated plants showed a rise in activity of RuBP oxygenase and glycolic acid oxidase. The rate of photorespiration was increased twofold by ABA treatment at molar while the CO2-compensation point increased 46% and stomatal resistance increased more than twofold over control plants.
How have humans affected the Chesapeake Bay ecosystem food web?
Answers
Answer:
Algal blooms caused by pollution and the lack of oysters in the Bay has led to the decline of ocean floor algae, plants, and like sea grass and an overgrowth of bacteria. Jellyfish that were once rare are now common.
Explanation:
Hope thats helpful.
WHAT DOES CALORIE MEANS ?
Answers
caloory moment
i hope this helped! please mark me as brainliest and 5 stars >:)
Which quality makes Earth particularly well-suited to support life?
O A. Its axis precesses about every 26,000 years.
O B. It is roughly the same age as the sun.
O C. It features a wide variety of topographies.
OD. Its distance from the sun helps maintain a narrow temperature
range.
Answers
1. Do you think it is fair that Watson and Crick were credited with the discovery when so many other scientists were involved? Why or why not? Think about your opinion and then back it up with at least one fact.
Answers
Answer:
No.
Explanation:
I don't think it is fair that Watson and Crick were credited with the discovery when so many other scientists were involved because all other scientists also contributed in the work and work harder for it so the credit must be given to all scientists. If the credit will not given to other scientists so it is an unfair act so my opinion is against the credit given to Watson and Crick.
2. Krypton (Kr) is a colorless gas that does not conduct electricity. Where would you
find this element on the Periodic Table?
a. On the left
b. On the right
C. In the middle
d. At the bottom
Answers
Krypton is element 36 and is a noble gas which are found in group 18.
Four identical plants are grown under
different colored light bulbs. Under which
color will the release of oxygen gas be the
slowest?
A. Blue
B. Orange
C. Green
D. Red
Answers
The release of oxygen gas will be the slowest under the red colored bulb.
It should be noted that phycoerythrin is a red pigment that's present in cryophytes and red algae. It's vital for the main chlorophyll pigments that are necessary for photosynthesis.
It should be noted that phycoerythrin reflects red light. Therefore, the release of oxygen gas will be the slowest under the red colored bulb.
In conclusion, the correct option is D.
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Which two organs do not have glands at all? Name it.
Answers
Answer:
The esophagus and large intestine. If this is for humans
Explanation:
IS ANYBODY ALIVE!!! I NEED HELP COMMENT ON THIS IF YOU WANT TO KNOW THE QUESTION. I WILL TAKE ALL HELP I CAN GET 2 ANSWERS BUT I CAN TAKE MORE ANSWERS IN THE COMMENTS BUT I NEED ONE REALLY GOOD ANSWER. SOMEBODY PLEASE RESPOND AND HELP ME!!
Answers
YESSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
Answer: yes i am alive
Explanation: I am breathing
Balanced forces do not result in any change in motion. forces: forces applied to an object in opposite directions that are not equal in size. Unbalanced forces result in a change in motion. friction: the force that opposes the motion or tendency toward motion of two objects that are in contact
I have a test in a couple days and I still don’t know how to do this stuffsomeone teach mee
!(points given)!
Answers
0 0%
2 50%
2 50%
Red square:
2 50%
2 50%
Work:
b b
B Bb Bb
b bb bb
B=Dominant trait
b=Recessive trait
BB=Purple flower
Bb=Purple flower
bb=White flower
If that makes sense.
A student drew the following diagram of the orbits of several objects in space.
OE
What keeps object A in orbit around object B?
The force of gravity between objects A and B.
The force of gravity between objects A and C.
O The force of gravity between objects A and E.
The force of gravity between objects B and X.
i’ll give brainlest answer please
Answers
Answer:
b an x
Explanation:
Answer:
Explanation:
5
PLS answer
How do vaccines generally work?
What is the difference between traditional vaccines and mRNA vaccines?
Answers
Answer:
Vaccines train our immune systems to create proteins that fight disease, known as ‘antibodies’, just as would happen when we are exposed to a disease but – crucially – vaccines work without making us sick
Explanation:
mRNA Vaccines Are New, But Not Unknown
This means the process can be standardized and scaled up, making vaccine development faster than traditional methods of making vaccines. mRNA vaccines have been studied before for flu, Zika, rabies, and cytomegalovirus (CMV).
What might happen to a cell if it gets too large?
Answers
Explanation:
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Answers
Answer:
The RARA gene on chromosome 17 provides instructions for making a transcription factor called the retinoic acid receptor alpha (RARα). A transcription factor is a protein that attaches (binds) to specific regions of DNA and helps control the activity (transcription) of particular genes.
Explanation:
Chromosome 11 is one of the 23 pairs of chromosomes in humans. Humans normally have two copies of this chromosome. Chromosome 11 spans about 135 million base pairs (the building material of DNA) and represents between 4 and 4.5 percent of the total DNA in cells.
Whale
Horse
Bird
Cat
Bat
Human
These limbs provide evidence of common ancestry because they -
Answer
A have the same basic structure
B pedom the same function
С
are the same size
Dare parts of mammals
Answers
Answer:
The answer is A
Explanation:
All the the different limbs all have an upper arm bone which is the humerus and two forearm bones which are the ulna and the radius.
The limbs of Whales, horses, birds, cats, and humans provide evidence of common ancestry because they have the same basic structure. Thus, the correct option for this question is A.
What is a common ancestor?A common ancestor may be defined as an ancestral organism that is significantly shared by two or more descendent lineages. In a more simple term, an ancestor that they have in common. These ancestors follow each taxon's lineage back in time until all the lineages meet up.
A Common Ancestor is a lineage that undergoes cladogenesis, that is, branching evolution, such that more than one species can trace its ancestry back to the common ancestor or, more accurately, to multiple common ancestors.
Therefore, the limbs of Whales, horses, birds, cats, and humans provide evidence of common ancestry because they have the same basic structure. Thus, the correct option for this question is A.
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How can climate change be reduced? How can climate change be fixed? Is there any evidence for us to see that climate change has been affecting us?
Answers
Answer:
We can easily reduce and fix climate change by Using less greenhouse gasses and by switching to all electric. Unfortunately global warming has started to affect us in ways such as extreme weather, wildfires and even Global warming has shown to cause infectious diseases to spread more rapidly.
Hope this helps
What are the gametes in females?
Answers
Answer:
eggs
Explanation:
Answer:
this is the correct answer I think
In guinea pigs, rough coats (with lots of swirly cowlicks) are dominant over smooth coats. If an RR guinea pig is crossed with a Rr guinea pig, what are the possible genotypes and phenotypes of the offspring? What are the chances of each?
Answers
1/4 Rr should be it
The chemical or molecule that the enzyme is changing or affecting is _____________
activation energy
a substrate
an active site
Answers
Answer:
A substrate
Explanation:
white blood cells with long lobed nuclues are called....?
Answers
Answer:
polymorphonuclear leukocytes
The part of the vascular system in a plant that draw up water and nutrients and carry them up the plant is the: Group of answer choices Root System Phloem Vascular System Xylem
Answers
Select the correct answer from each drop-down menu.
(drop-down menu)tends to raise CO2 levels in the atmosphere, but
(drop-down menu) tends to lower CO2 levels in the atmosphere.
Answers
Answer:
respiration and photosynthesis maybe as I can't see the options
Explanation:
Answer:
Cutting down trees instead of growing trees
using clean energy sources instead of fossil fuels.
Explanation: Took the test and I got it correct.
Considering the temperature vs. time graph below, how does the temperature at the beginning of a change of state compare with the temperature at the end of the change?
The temperature is always lower.
The temperature is always the same.
The temperature is usually lower.
The temperature is usually higher.
Answers
Answer:
where's the graph man...... Also very complicated question...
Explanation:
With graph only it can be done...Answer:
The temperature is always lower.
Explanation:
why is carbon is so important for life?
Answers
Answer:
Carbon permeates the world of life from the energy requiring activities and structural organizations of cells, to physical and chemical conditions that span the globe and influence ecosystems everywhere.
The body cells of hamsters have 44 chromosomes. How many chromosomes would the sex cells of a hamster have? Explain.
Answers
Answer: 22
Explanation:
Answer:
hamster has 22 sex cells because they just do
Explanation:
like mofo
An organism that causes infections in plants and animals, but cannot be seen with a light microscope similar to that used in a high school biology course, is most likely a
A. Virus
B. Bacterium
C. Protozoan
D. Fungus
Answers
Answer:
the answer is a from what I've heard
What are the phases of mitosis? A. Prophase B. Interphase C. Cytokinesis D. Telophase (Multiply Choice)
Answers
Phenotype refers to the _________ of an individual
A.actual physical appearance
B.recessive alleles
C.dominant alleles
Answers
Answer:
it's A..................
Answer:
It's A................
Which of the following animals belongs in class Cepholopoda?
1. snails
2. octopuses
3. glass sponges
4. jellyfish
Answers
Answer:
2. octopuses
Explanation:
A cephalopod is any member of the molluscan class Cephalopoda such as a squid, octopus, cuttlefish, or nautilus.
Octopuses belongs in class Cepholopoda. So, the correct option is (B).
What is Cephalopod?A cephalopod is defined as any member of the molluscan class Cephalopoda such as a squid, octopus, cuttlefish, or nautilus where specifically marine animals with bilateral body symmetry, a prominent head, and arms modified from primitive molluscs or is characterized by a set of tangents foot. These animals use gills to breathe and are invertebrates (lack backbones).
Cephalopods are most notable for their many arms and soft bodies, while ancestral cephalopods are known mostly from their shells because they are well preserved as fossils. The octopus, squid, cuttlefish, and chambered nautilus are familiar representatives.
Thus, Octopuses belongs in class Cepholopoda. So, the correct option is (B).
Learn more about Cephalopod, here:
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