Immature seed cones of conifers are usually green before pollination, and flowers of grasses are inconspicuously colored. What does this indicate about their pollination? (A) They probably self-fertilize and do not need pollen carried from one plant to another. (B) Their pollinating insects are probably color blind. (C) They are probably wind pollinated. (D) They probably attract pollinators using strong fragrances.
Answers
They are probably wind pollinated indication about their pollination .
Option C is correct
What does the seed cone of conifers reproduce?
Most important, coniferous plants reproduce by growing seeds inside cones. These cones ripen over the course of weeks, and therefore the seeds are then dispersed either by being dropped, eaten or over excited by forest wildlife. this is often something that only a coniferous plant can do.
What sorts of cones do conifers produce ?Conifers produce two differing types of cones. Male cones and feminine cones. Male cones grow within the lower branches, female cones grow within the upper branches where they may be fertilized by pollen blown on the wind from the male cones.
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Related Questions
2+2??
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Melanie is using the spinner to play a card game. The spinner has six sections of equal size. A spinner.Short description, A spinner.,Long description,A spinner is divided into 6 equal sections.One section is labeled, play a card.Two sections are labeled, take 3 cards.Two sections are labeled, take 2 cards.One section is labeled, lose a turn.QuestionWhat is the probability that Melanie will have to ,begin emphasis,take cards,end emphasis, when she spins the spinner?Answer options with 5 options
A.one-sixth
D.two-thirds
B.one-fourth
E.three-fourths
C.one-third
Answers
Answer:
two-thirds
Explanation:
women are more prone to a decline in height than are men because of their
Answers
Women are more prone to a decline in height than men due to factors such as age-related bone loss, hormonal changes, and osteoporosis.
Women generally experience a greater decline in height compared to men due to several factors. One primary reason is age-related bone loss, also known as osteoporosis. As women age, they tend to lose bone density more rapidly than men, making their bones weaker and more susceptible to fractures. This bone loss can result in a gradual decrease in height over time.
Additionally, hormonal changes play a crucial role in height decline among women. The decline in estrogen levels during menopause contributes to the acceleration of bone loss, leading to a reduction in height. Estrogen plays a vital role in maintaining bone health, and its decrease negatively affects bone density.
Moreover, women typically have smaller bone structures compared to men, to begin with. This anatomical difference means that even a slight loss in bone density can have a more significant impact on their height compared to men.
While men also experience age-related bone loss, the decline is generally more pronounced in women. However, it's important to note that individual factors such as genetics, lifestyle, and overall health also influence height decline in both men and women. Regular exercise, a balanced diet rich in calcium and vitamin D, and preventative measures against osteoporosis can help mitigate height loss in both genders.
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the leaves of a plant with a unique photosynthetic pigment appear orange in sunlight. what wavelengths of visible light are most likely absorbed by this unique pigment?
Answers
The wavelengths of visible light that are being absorbed by the pigment that appears orange in sunlight is blue and violet.
What is a photosynthetic pigment?
A photosynthetic pigment is known as a pigment that is present in photosynthetic bacteria or chloroplasts. It captures the light energy necessary for photosynthesis.
The wave of light on an absorption spectrum that the pigments of a photosynthetic plant absorbs typically affects its appearance to the human eyes.
In light of this, some photosynthetic plants such as carotenoids have a unique photosynthetic pigment, which makes their leaves to appear orange to the human eyes. Also, since the plant is a carotenoid, the wavelengths of visible light that are being absorbed by this pigment is blue and violet.
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In pea plants, the allele for yellow seeds (Y) is dominant and the allele for
green seeds (y) is recessive. Two plants with the following genotypes are
crossed:
YY x Yy
What ratio of yellow seeds to green seeds should you expect in the offspring?
A. 2:2
B. 3:1
C. 1:3
D. 4:0
Answers
Answer: B: 3:1
Explanation: The first pair of alleles are homologous, consisting of both dominant yellow seeds, while the other pair is heterozygous with one yellow seed and one green seed. This would make the genotype 75% yellow and 25% green, or 3:1
Can someone help me please with this I can't do it because i have a lot of work from other classes and this is really important someone pls help me
Answers
Answer: can we do this answer in the comments i really cant type half of my pc screen broke
Explanation:
Which nucleic acid has ribose? Which nucleic acid has deoxyribose?
Answers
DNA has deoxyribose and RNA has ribose
Which type of transport is being used in the model above (diffusion, osmosis, facilitated diffusion, active transport)? Explain how you know.
Answers
please help me please will give brainliest to
Answers
Answer:
16
Explanation:
By using the law of independent assortment, you can solve this by calculating
\(2^4\)
however, crossover can cause endless possibilities of genotypes!
Substances can move across the plasma membrane in two different ways—actively or passively. This activity will help you determine whether transport mechanisms actively or passively move substances across the membrane. Sort the following types of membrane transport mechanisms into active or passive processes.
--Active Process: Secondary active transport, Primary active transport, Endocytosis, Exocytosis. --Passive Process: Simple diffusion, Facilitated diffusion, Osmosis
Answers
The transport mechanisms that actively move substances across the plasma membrane are:
Primary active transport: ActiveSecondary active transport: ActiveEndocytosis: ActiveExocytosis: ActiveThe transport mechanisms that passively move substances across the plasma membrane are :
Simple diffusion: PassiveFacilitated diffusion: PassiveOsmosis: PassiveWhat are transport mechanisms?Transport mechanisms refer to the various ways in which materials, such as nutrients, gases, and waste products, are moved within and between cells, tissues, and organisms.
There are several transport mechanisms that are important for the functioning of living organisms. These include:
DiffusionFacilitated diffusionActive transportEndocytosis and exocytosisCirculatory systemsEach of these transport mechanisms plays a crucial role in maintaining the proper functioning of cells and organisms, allowing them to take in essential nutrients, remove waste products, and communicate with each other.
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Passive transport is the movement of molecules across the cell membrane without requiring an input of cellular energy. identify which of these options are examples of passive transport.
a. do not require cellular energy to allow molecules to pass through the cell membrane.
b. do not require cellular energy because the kinetic energy of the molecules' movement will drive the movement down the concentration gradient.
c. do not require cellular energy because the molecules are small enough to fit through the membrane.
d. All of the above.
e. a and b
f. None of the above.
Answers
The movement of molecules across a cell membrane known as passive transport occurs without the use of cellular energy.
Special compounds can pass through plasma membranes to enter and leave the cell, keeping out dangerous substances and allowing in only necessary substances. Selectively permeable, plasma membranes let some compounds pass through while preventing others. If they abandon this selectivity, the cell won't be able to strengthen itself and would perish. The majority of passive membrane transfer methods are direct. Passive transport is a phenomena that happens naturally and does not require the cell to use energy to move. Instead of using cellular energy like active transport, which drives the movement of molecules across cell membranes, passive transport relies on the second law of thermodynamics.
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The Basic Building Blocks of proteins are called amino acids.Why are proteins essential to all life?
Answers
Answer:
You need proteins in order for your body to create and repair cells.
I will give The crown to you if your first to answer 5. Using the Law of Gravitation explain why the moon orbits the earth and the planets orbit the
Answers
Answer:
Explanation:
the moon and satellites we launch orbit Earth because they are so much lighter than our planet. ... The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
Question 9 of 10
The photo shows nervous tissue.
What is the main function of nervous tissue?
A. To cover the body to protect other cells
B. To transport materials and defend the body
C. To send signals to control the body
D. To contract to cause movement in the body
Answers
Answer:
Explanation:
To send signals to control the body
Nerve cells: Transport signals around body
Tissue: Made of many cells
The main function of nervous tissue is C. To send signals to control the body. Nervous tissue is made up of specialized cells called neurons that are capable of transmitting electrical and chemical signals throughout the body. These signals allow the nervous system to control and coordinate various body functions, including movement, sensation, and thought processes. In addition to neurons, nervous tissue also contains support cells called glial cells that help to protect and nourish the neurons. Overall, nervous tissue plays a critical role in the functioning of the nervous system and the control of bodily functions.
Suggest how a cell may vary the rate of an enzyme controlled reaction:
nt
Answers
Answer:
A cell may vary the rate of an enzyme controlled reaction by making more/less or degrading more/less.
Explanation:
A cell may vary the rate of an enzyme controlled reaction by making more/less or degrading more/less. Several factors affect the rate at which enzymatic reactions proceed include post translational modifications, substrate concentration, cofactors, temperature, pH, locations. The shape and structure of the enzyme will change as the pH value of the reaction medium changes.
A cell may vary the rate of an enzyme controlled reaction by:
Degrading with timeAccording to the given question, we can see that we need to show how a cell can vary the rate of a reaction which is controlled by an enzyme.
As a result of this, we can see that there are different ways through which a cell may control the rate of reaction in an enzyme controlled state which are by the level of degradation with time.
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becasue of their high productivity and quality of soil the biome types that have lost the greatest percentage of theri original area to humans are
Answers
Becasue of their high productivity and quality of soil the biome types that have lost the greatest percentage of theri original area to humans are grassland
The grassland biome is one of the most productive and diverse biomes on the planet, making it a prime target for human development and agricultural activities. Unfortunately, due to its high productivity and quality of soil, grassland biomes have lost the greatest percentage of their original area to humans.
Grasslands are found on every continent except Antarctica, and they typically have cool winters and warm summers. The soil in grasslands is very fertile and able to support a variety of plants, animals, and other organisms. This makes it an ideal location for agriculture, and many humans have taken advantage of this by clearing the land and converting it to farmland.
Not only have humans cleared grassland for farming, but they have also converted large areas to urban and suburban development. The combination of these two activities has caused a dramatic reduction in the amount of grassland that is available to animals and other organisms.
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TRUE OR FALSE Prokaryotic cells can’t replicate DNA, because they do NOT possess nuclei.
Answers
Answer:
false
Explanation:
hope it helps
Which chemical mediators induce pain during an inflammatory response?
a. prostaglandins and bradykinin
b. leukotrienes and serotonin
c. tryptase and histamine
d. phospholipase and prostacyclin
Answers
Prostaglandins and bradykinin are chemical mediators that induce pain during an inflammatory response. The correct answer is option a.
Prostaglandins are lipid compounds derived from arachidonic acid and play a key role in promoting inflammation. They sensitize pain receptors, increasing their sensitivity to pain stimuli and amplifying the perception of pain.
Bradykinin, on the other hand, is a peptide released during tissue damage. It acts as a potent pain-inducing agent by directly stimulating pain receptors.
Both prostaglandins and bradykinin contribute to the inflammatory process by causing vasodilation, increasing vascular permeability, and promoting the recruitment of immune cells.
These chemical mediators play a crucial role in the signaling of pain during inflammation. The correct answer is option a.
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The chemical mediators that induce pain during an inflammatory response are prostaglandins and bradykinin.
During an inflammatory response, the body releases various chemical mediators that contribute to the sensation of pain. Two important chemical mediators that induce pain are prostaglandins and bradykinin.
Prostaglandins are lipid compounds derived from arachidonic acid. They are synthesized by the enzyme cyclooxygenase (COX) and play a crucial role in inflammation. Prostaglandins are involved in the sensitization of pain receptors, leading to increased pain perception.
Bradykinin is a peptide that is released during tissue injury and inflammation. It acts on specific receptors, causing vasodilation, increased vascular permeability, and pain.
Both prostaglandins and bradykinin contribute to the inflammatory response and play a significant role in the induction of pain.
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Question # 2
Multiple Choice
According to the CDC article on noroviruses, food can be contaminated by all except
direct contact with contaminated hands
tiny droplets of vomitus that spray through the air when an infected person vomits
indirect contact with animal feces
direct contact with work surfaces that are contaminated with infectious stool or vomit
Answers
Answer:
I think Indirect contact with animal feces
hope it helped :)
WILL MARK BRAINLIEST!!!! Can someone help me with this question?
What observations did scientists make when they collected and dissected rockfish?
Answers
Answer:
Rockfish larvae are pelagic, there is genetic evidence for limited dispersal within Puget Sound for the quillback and copper (S. caurinus) rockfish (Seeb 1998) as well as for differentiation from coastal populations of brown rockfish (S. auriculatus) (Buonaccorsi et al. 2002). This degree of population structure is consistent with other genetic and otolith studies from coastal Pacific rockfish populations
Answer:
Rockfish larvae are pelagic
Explanation:
What is one of the reactants for cellular respiration?
A. Glucose
B. Water
C. Carbon dioxide
D. Energy
Answers
Explanation:
The reactants for cellular respiration are Glucose and Oxygen, so the answer is A.
Answer:
oxygen and glucose.
Explanation:
oxygen and glucose are both reactants in the process of cellular respiration.
11. The diagram below represents a portion of a
DNA molecule.
X
The letter X represents two bases that are
(1) identical and joined by weak bonds
(2) identical and joined by strong bonds
(3) a part of the genetic code of the
organism
(4) amino acids used to build folded protein
molecules
Answers
Nucleotides are subunits that compose nucleic acids, like DNA. Nucleotides are made of bases, phosphate groups, and sugars. The correct option is (3), The letter X represents two bases that are a part of the genetic code of the organism.
What are nucleotids?
Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base.
Several nucleotides, attached to each other by covalent bonds, compose the nucleic acids.
Nucleotides have a certain order or sequence in nucleic acids, which is significant since these sequences carry biological information neccesary to carry out cellular functions.
The composition of a nucleotide is the following,
Nitrogenated bases are organic compounds that exhibit two or more nitrogen atoms. Biologically, exist five nitrogenated bases classified into two groups: purines and pyrimidines.In DNA molecules, Adenine and guanine derive from purines, while Thymine and Citocine derive from Pyrimidines.
A-T pair is united by 2 hydrogen bonds, and the G-C pair is united by 3 hydrogen bonds.
Sugar is always a pentose.- The DNA sugar group is deoxyribose
- The RNA sugar group is ribose .
Phosphate groupA phosphoric atom and four oxygen atoms arranged around it.
Among the options,
The letter X does not represent identical bases, so options 1 and 2 are not correct. The letter X does not represent an amino acid, so option 4 is incorrect.The correct option is (3), The letter X represents two bases that are a part of the genetic code of the organism.
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If you pluck a guitar string hard the sound waves it gives off will have __________ amplitudes.
small
large alsoooooooo im booorrredddddddddddddddddddddddddddd
Answers
Answer:
large right. I mean I think so. Also same. I'm bo red
C.elegans is a model organism and was the first eukaryotic organism to have its genome sequenced. The free-living nematode is often used in laboratories investigating nervous system development with all 302 of its neurons and their effectors categorized. Interesting control mechanisms have been investigated with reproduction, particularly with egg-laying in the nematode. There are 16 muscles, 2 types of neurons, and multiple receptors involved in the process of laying eggs in C.elegans, and there are mutations in all of those structures for the study of the process. One particular mutation that prevents the laying of eggs by the worm is rescued by the neurotransmitter, serotonin. That rescue suggests that the mutation is most likely in which of the following?
A. one of the muscles needed for egg-laying
B. a receptor for serotonin on cells needed for egg-laying
C. a pre-synaptic neuron involved in egg-laying
D. a post-synaptic neuron involved in egg-laying
Answers
Answer:
C. a pre-synaptic neuron involved in egg-laying
Explanation:
Serotonin (5-HT) is a neurotransmitter, i.e., a molecule that binds to specific receptors and thus transmits signals from one pre-synaptic neuron to another target cell. In humans, serotonin is involved in many physiological functions including sleep, mood, emotions, appetite, digestion, etc. Moreover, Caenorhabditis elegans is a model organism widely used in neuroscience research in order to understand neuromodulation at the level of individual neurons. In C. elegans, serotonin modifies behavior by regulating neuronal excitability and synaptic efficiency. Moreover, also in C. elegans, it has been shown that serotonin induces egg-laying and also provides a feedback regulatory mechanism by inhibiting the activity of the pre-synaptic neurons that release it. In consequence, in this case, it is expected that serotonin rescues the loss of function of serotonin receptors required for egg-laying by providing a regulatory feedback loop that contributes to serotonin adaptation.
Which part of the brain is indicated by the arrow below?
Pons
Cerebellum
Cerebrum
Medulla oblongata
Answers
Answer:
the correct answer is option ( A ) pons
Explanation:
hope it helps you
Mark my answer as brainlist
have a nice day
Answer:
A. Pons
Explanation:
I got it right on my quiz :)
The Dihybrid Problem Solve
Read the beginning part about pea plants again. Bernard really likes growing peas in his garden, but the peas he likes are
green. He also likes them to have a wrinkled texture, because he thinks they look much more interesting that way. Please
work out a YyRr x YyRr (heterozygous cross) on the back of this sheet or on another paper while showing all work.
10. After showing your work to use as support, what is the chance that Bernard will have pea plant offspring that match the
phenotype he is looking for (green, wrinkled)?
11. What is the phenotype ratio of this heterozygous cross?
(yellow, round):
(yellow, wrinkled):
(green, round):
(green, wrinkled)
12. If Bernard did not receive any pea plants that were green and wrinkled in actuality, would you know for sure that the
parent genotypes were incorrect? Why or why not?
The Amo
00 00
Sisters
Amoeba Sisters LLC
All rights reserved
Answers
On the dihybrid pea plants:
The chance that Bernard will have pea plant offspring that match the phenotype he is looking for (green, wrinkled) is 1/16 or 6.25%.
The phenotypic ratio of this heterozygous cross is 9:3:3:1.
No, we cannot be sure that the parent genotypes were incorrect.
How to determine phenotype?This probability be obtained by multiplying the probability of getting a green seed (3/4) with the probability of getting a wrinkled seed (3/4), giving (3/4 x 3/4 = 9/16), and multiplying result by the probability of both traits occurring together (1/4).
According to the phenotypic ratio, 9 children will be yellow and round, 3 will be yellow and wrinkled, 3 will be green and round, and 1 will be green and wrinkled for every 16 offspring.
This is due to the fact that the chance of having a green and wrinkled child is only 1/16, or 6.25%. As a result, Bernard's pea plants may have simply failed to generate any offspring with the required phenotype owing to chance.
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Replicate the following DNA sequence: CCC
Answers
Answer:
GGG
Explanation:
use AT GC
opposite of C is G and since there's 3 c's you replicate and get 3 g's
Which of the following statements about biodiversity is TRUE?
Available answers:
More biodiversity → Less chance for an ecosystem to sustain itself
More biodiversity → Better chance for an ecosystem to sustain itself
More biodiversity → Less species in an ecosystem
More biodiversity → More pollution in an ecosystem
Answers
Answer:
more bio diversity Better chance for an ecosystem to sustain
as nutrients cycle through an ecosystem, they are moved from biomass pools to litter pools through processes such as death, molting, and the dropping of leaves.
Answers
Nutrients cycle through an ecosystem as they are transferred from one organism to another through processes like predation, decomposition, and absorption. They can also be moved from biomass pools to litter pools through various natural processes.
For example, when an organism dies, its body may decompose, releasing nutrients back into the environment. Similarly, when animals molt or shed their skin or feathers, these materials can contribute to litter pools, which then decompose and release nutrients.
Additionally, when plants drop their leaves, these organic materials can also become part of the litter pool, where they break down and contribute to nutrient cycling in the ecosystem.
Overall, the movement of nutrients from biomass pools to litter pools is an important part of the natural cycling of nutrients in ecosystems, and helps to maintain the health and balance of these complex systems.
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What is the process of chemosynthesis
Answers
Explanation:
chemo synthesis is a process by which certain microbes create energy by mediating chemical reactions
SITUATION: Teddy wants to prove if gravity really acts on each object. He used a paper and crumpled paper. He threw it at same time in same height.
–Answer 1-5 each question.
–Plsss can someone answer my question? :<
1. Do you think the 2 objects will hit the floor first?
2. What makes one objects hits the floor first?
3. What factor affects the movement of 2 objects in going down?
4. Did he prove that gravity acted upon the two objects? How?
Answers
2. The amount of mass
3. Gravity
4. Yes because the paper most likely flew away and the crumble paper most likely hit the floor