Answer:
Vascular system, in plants, assemblage of conducting tissues and associated supportive fibres. ... Xylem tissue transports water and dissolved minerals to the leaves, and phloem tissue conducts food from the leaves to all parts of the plant.
Explanation:
Why does a gummy bear soaked with water shrink after being soaked with salt water?
Answer: Because they were placed in a hypertonic solution, there was a natural tendency for water to leave the gummy to create an isotonic solution. The greater amount of salt in the salt water solution would cause more water to leave the gummy. Therefore, the gummy would shrink more in a higher concentration of salt water
Explanation:
The gummy bear shrinks after being soaked with salt water because the gummy bear loses water to the environment.
OSMOSIS:
Osmosis is the process whereby water moves from a region of higher concentration to a region of lower concentration through a semipermeable membrane. The salt water in this question represents a hypertonic solution that contains high salt conc. but low water concentration. This means that if the gummy bear is placed in a salt water, water will move from the cells of the gummy bear (low concentration of salt) to its environment (high salt concentration) based on osmotic principle. Therefore, gummy bear shrinks after being soaked with salt water because the gummy bear loses water to the environment.Learn more at: https://brainly.com/question/19803174?referrer=searchResults
A primitive eukaryote was discovered that displayed a unique nucleic acid as its genetic material. Analysis provided the following information: (a) The general X-ray diffraction pattern is similar to that of DNA but with somewhat different dimensions and more irregularity. (b) A major hyperchromic shift is evident upon heating and monitoring UV absorption at 260 nm. (c) Base-composition analysis reveals four bases in the following proportions. Note that xanthine and hypoxanthine are both purines. (d) About 75 percent of the sugars are deoxyribose, while 25 percent are ribose. Part A Based on these findings, which characteristics does this unique nucleic acid have
Answer:
c and d
Explanation:
(C) Even though this option seem incomplete, the information revealed also shows it's unique.
One characteristic this nucleic acid has that is different from other nucleic acid is the purines. The purines in both DNA and RNA are adenine and guanine while this nucleic acid has xanthine and hypoxanthine which are the found in the tissues and fluids of other organisms.
(d) Also, it's nucleotide has a mixture of two types of ribose sugars which is unusual because a DNA molecule has deoxyribose sugar while a RNA molecule has a ribose sugar - none of the two nucleic acids have a mixture of both types of sugar.
Removing a specific group of trees within a small area over a long period of time is
Answer:
Deforestation
Explanation:
Deforestation
-Also this is science- Which substance would heat up the most during a sunny day, and why?
Air, because it needs the most amount of energy to raise its temperature.
Seawater, because it needs the least amount of energy to raise its temperature.
Sand on the shore, because it has a relatively low specific heat.
Fresh water, because it has high specific heat
Answer: C.
Explanation: Sand because solid molecules are the closest together, and thus causing heat to transfer the fastest.
Answer: C.
Explanation: Sand because solid molecules are the closest together, and thus causing heat to transfer the fastest.
HELPPP WILL MAKE BRAINILEST! Which of the following is NOT part of the chromosomes?
A)sex chromosomes.
B)Zygote.
C)Chromatin.
D)Centromere.
E)Autosomes.
Answer:
i think its e
Explanation:
Answer:
d
Explanation:
Which statement best describes weather?
A The temperature is increasing as the cloud cover decreases.
B Wind speeds are greatest during the spring.
C Since 1970, yearly rainfall averages are lower than usual.
D Flash flooding has increased in many areas during the last few decades
The energy used in photosynthesis come from what??
Answer:
chloroplasts.
Explanation:
Chloroplast
Chloroplasts are organelles that conduct photosynthesis, where the photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in the energy-storage molecules ATP and NADPH while freeing oxygen from water in plant and algal cells. They then use the ATP and NADPH to make organic molecules from carbon dioxide in a process known as the Calvin cycle. Chloroplasts carry out a number of other functions, including fatty acid synthesis, much amino acid synthesis, and the immune response in plants. The number of chloroplasts per cell varies from one, in unicellular algae, up to 100 in plants like Arabidopsis and wheat.
A nonnative species of plant is introduced into a forest. Which of the
following would be most likely to prevent this plant from becoming an
invasive species?
Answer:
I think it's A
Explanation:
That's the only answer that makes sense in relation to the question since it's asking what would prevent the plant from being an invasive species.
The most likely to prevent this plant from becoming an
invasive species is,
The plant must complete with tough native species.So, the correct option is A
What is nonnative species?The nonnative species also known as non-indigenous species.The any species which is not found in ecosystem is called nonnative species.The species introduced naturally and not by human agency .What is invasive species?The non-native species that causes harm to the environment or ecosystem is called invasive species.
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what word best describes the structure of a cell membrane
Answer:
Layered
Explanation:
Cell membranes are based on lipid bilayer. Plasma membranes consist of a lipid bilayer with proteins embedded in the bilayer. The principle lipids are phospholipids. A phospholipid molecules has a hydrophilic head with a phosphate group as part of its structure and two hydrophobic tails.
que son los radicales
Answer:
un radical es un átomo, molécula o ión que tiene un electrón de valencia no apareado. Con algunas excepciones, estos electrones desapareados hacen que los radicales sean altamente reactivos químicamente.
Explanation:
What organelle would you not find in a plant cell? Chloroplasts,centrioles,central vacuole,or cell wall?
Answer:
Centrioles
Explanation:
If we look at ths other options Chloroplast and Cell Wall are both needed for a plant to survive and function. So we automatically know that it's going to be there so those aren't an option. We know that both animal and plant cells have a vacuole but plant cells have larger ones so we know that's not an answer. Leaving us with the only other possible answer left, Centrioles.
Answer:
Hey!
Your answer is CENTRIOLES
Explanation:
We know that Plants have a CELL WALL (shape), a CENTRAL VACUOLE (water storage etc) and CHLOROPLASTS (photosynthesis)
BUT Centrioles don't form parts of the "components" of the plant cell...
I HOPE THIS HELPED YOU!13. Galapagos finches are birds that live on islands
off the coast of South America. The finches on the
various islands are very different from each other.
As a result of the different food resources on the
islands, which of the following structures of the
Galapagos finches experienced the greatest
change through natural selection?
(5 Points)
Head size
Eye shape
Feather color
Beak shape
Galapagos finches experienced the greatest change through natural selection in the beak shape. The correct option is D.
What is natural selection?Natural selection is the variation in individual survival and procreation brought on by phenotypic variances.
The evolution of a population's heritable features across generations is a fundamental mechanism of evolution.
Short beaks of Darwin's finches proved to be an adaptation that rendered them better adapted to grub-eating and poking holes in the ground.
However, Darwin's theory of natural selection was strengthened by Galapagos finches.
Until they all split off to become separate species, Darwin's Finches' advantageous characteristics were chosen for over many generations. These birds possessed distinct beaks, although being almost identical to mainland finches in all other respects.
Thus, the correct option is D.
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A sudden increase in the amount
of available nutrients can create
problems for an aquatic
ecosystem. How?
A. Large numbers of producers can confuse
herbivores.
B. Increased nutrients can cause producers to
compete aggressively with one another.
C. There is not enough oxygen in the
atmosphere to support excessive numbers of
aquatic plants.
Answer:
C
Explanation:
There would be a high amount of nitrates and phosphates, which reduces the amoubt of oxygeb in the tank, that will lead to the difficulty of supportibg the excessive amount of aquatic plants.
Answer:
C. There is not enough oxygen in the
atmosphere to support excessive numbers of
aquatic plants.
Explanation:
n excess amounts, both nutrients can cause an increase in aquatic plant growth and algae blooms, called eutrophication. These algae blooms live at the water surface, in order to easily access oxygen and sunlight. As a result, eutrophication prevents lower water levels from access to sunlight and oxygen in the air.
HELP FAST PLEASE. Vacuoles in different organisms and cell types typically have different compositions and functions. Which of the
following pairs are most similar in composition and function?
•central vacuoles in plant cells and food vacuoles in amoebas that store sugar
•contractile vacuoles in unicellular eukaryotes and central vacuoles in plant cells
•contractile vacuoles in unicellular eukaryotes and small storage vacuoles in plant cells
•food vacuoles in amoebas and lytic vacuoles in plants that contain hydrolyzing enzymes
Answer:
I believe it is the second answer, contractile vacuoles and central vacuoles.
Explanation:
Contractile vacuoles store water, and so do the central vacuoles in plant cells. They regulate water in the cell and both are typically large.
Answer:
D.food vacuoles in amoebas and lytic vacuoles in plants that contain hydrolyzing enzymes
DNA is known to be synthesized or manufactured from an RNA or DNA template *
1 point
Messenger RNA (mRNA)
Transfer RNA (tRNA)
Complementary
Nitrogen bases
Answer:complementary
Explanation:
The trp operon encodes the genes required to synthesize tryptophan. This operon is regulated by a feedback loop in which tryptophan binds to a transcriptional regulator leading to a change in gene expression from the operon. This is most likely an example of__________. a. inducible gene expression b. repressible gene expression c. constitutive gene expression d. post-translational regulation of gene expression
Answer:
The correct answer is option b. "repressible gene expression".
Explanation:
The trp operon is a classic example of a repressible gene expression. The trp operon controls the biosynthesis of tryptophan from an initial precursor by encoding five genes that translate to three enzymes. These enzymes act as regulators and tryptophan itself acts as the final regulator. Tryptophan inhibits its own production when it binds to the transcription regulator, therefore it is an example of a repressible gene expression.
Is the cheek cell a eukaryote or prokaryote?
How do you know?
Please show how you know I give Brainlest
Answer: Eukaryote.
Explanation: Eukaryote cells are cells that make up an organism with multicellular properties. Like for example a cat, a human, and a raccoon all have Eukaryote cells because they are not unicellular.
what is the key to stabilizing global population?
RNA is chemically similar to DNA except that its sugars have an additional oxygen atom,
and the base thymine is replaced by a structurally similar base called
I can give you one answer and that is that im sure the answer has a weird name so sara is out of the question.
what is one function of proteins
Answer:
It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions.
Explanation:
What term describes the set of chromosomes matched together and labeled as numbered chromosomes?
Answer:
Here is your answer
Homologous pair
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Use the internet to research genes and their affects on heredity. How many chromosomes do we inherit from each parent? What are recessive and dominant genes? What are inherited traits? What are acquired traits?
Answer:
23 chromosomes
A dominant gene is a type of gene which dominates in the inheritance pattern and masks the other one, on the other hand, a recessive gene is that which does not show its trait in inheritance pattern and hidden by the dominant one. A dominant gene is stronger gene while the recessive gene is a week gene. Dominant gene is always expressed in the upper case letters like A, F, V whereas recessive gene is always denoted by the lower case letters like a, f and v. dominant gene show in the inheritance when one of the two genes is dominant but in case of recessive gene both the genes of a trait should be recessive.
Traits you get from your parents. Inherited features evolve due to genetic material rearrangement and mutation. The parents transfer those traits (inherited) to their offspring. These aren't dying but passed on to the next generation. Example: earlobe attached or free, and curly hair.
An acquired characteristic is a non-heritable change in a function or structure of a living organism caused after birth by disease, injury, accident, deliberate modification, variation, repeated use, disuse, misuse, or other environmental influence. Acquired traits are synonymous with acquired characteristics. They are not passed on to offspring through reproduction.
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Describe how skin pigmentation is determined, and also
how it is affected by exposure to the sun.
Answer:
pigmentation is determined by the amount of melanin in the skin. Without melanin, the skin would be pale white with shades of pink caused by blood flow through the skin. The extra melanin makes your skin look darker or sun-tanned. In some cases, the sun causes an uneven increase in melanin production, which produces irregular coloring of the skin. The sun can also cause a permanent stretching of small blood vessels, giving your skin a mottled, reddish appearance.
Explanation:
Humans are unusual because our cultural practices can actually change our environmental circumstances. We can change the environment in which natural selection acts on our traits. Describe how this process has played out in the evolution of adult lactose tolerance. Describe how this process has played out in the maintenance of the sickle-cell trait. Can you hypothesize any similar situations where our future evolution may be influenced by cultural practices we have today
Answer:
Adult humans capable of digesting lactose were selected, thereby this phenotypic trait became common in dairy consuming societies
Explanation:
From the first moment after birth, babies can digest lactose in milk because they produce lactase, which is an enzyme capable of hydrolyzing lactose into glucose and galactose. In human societies that non consume milk products, the level of the lactase enzyme abruptly decreases during the first years of life due to the inactivation of the gene encoding this enzyme (i.e., lactase gene). However, in dairy consuming societies, a genetic mutation in the lactase gene that appeared among early cattle-raising people in Europe was selected, nowadays, this mutation is mostly present (i.e., in a higher frequency) in these societies, thereby adult people is generally adapted to consume lactose-based products.
What animals live in the marianna trench?
Answer:
xenophyophores, amphipods and small sea cucumbers (holothurians)
Explanation:
Answer:
The three most common organisms at the bottom of the Mariana Trench are xenophyophores, amphipods and small sea cucumbers (holothurians), Gallo said. The single-celled xenophyophores resemble giant amoebas, and they eat by surrounding and absorbing their food.
Explanation:
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According to the chart on the content page, which biological molecules have carbons in a ring shape as a part of their structure?
hey guys i found this bug inside my house and i have no clue what it is any help? i get a couple of them every month
Answer:
Oh I see those in my house too. they freak me out like what if they are in my bed
Explanation:
.
what is quardratic equation ??express its formula .....!please gyus follow me
Which of the following is NOT one of the potential mechanisms allowing kin recognition among animals? Group of answer choices kin-differential spatial association, so that kin are reliably found in a given place phenotype matching, whereby kin are identified through comparison of their phenotypic attributes with those learned from reliable kin, including oneself kin-differential familiarization, whereb social familiars are treated as relatives. kin-branding, whereby all individuals are labeled actively by each other at birth so that kin can be discriminated from nonkin. genetic similarity detection, whereby phenotypic labels are correlated with one's underlying genotype, allowing for kin discrimination based on that.
Answer:
The correct answer is "kin-branding, whereby all individuals are labeled actively by each other at birth so that kin can be discriminated from nonkin".
Explanation:
Kin recognition, also known as kin detection, is an ability developed by some animals to detect organisms that are genetic related and discriminate among other animals that are not (nonkin). There are some mechanisms that animals use for kin recognition, however labeling actively each other is not one of them. In most cases, animals use kin recognition based on pheromonal cues.
which description represents the effects of osmosis on a plant cell when the concentration of sugar particles is greater inside the cell than outside?
Answer:
The diffusion of water through a selectively permeable membrane is called osmosis. Which description represents the effects of osmosis on a plant cell when the concentration of sugar particles is greater inside the cell than outside? Water moves into and out of the cell at equal rates, and cell size remains the same.
Explanation:
