Answer: a. Carpel flower tissues is reproductive.
Explanation: The carpel is present in the inner part of a flower known as a female reproductive organ. A carpel consists of a style, an ovary, and a stigma. The style is a long, slender tube that connects the stigma and the ovary. The Stigma is present in the top, sticky area of a carpel, where pollination takes place. Stigma is a place where the pollen germination takes place once the pollen deposited on the stigma. An ovary is a female reproductive part, which produces ova.
Which correctly describes ligaments, tendons, and cartilage?
A.
Tendons connect two bones, ligaments attach muscle to bone, cartilage covers ends of bones and acts as a "shock absorber."
B.
Cartilage connects two bones as well as muscle to bone, tendons and ligaments covers ends of bones and act as a "shock absorbers."
C.
Ligaments connect two bones, tendons attach muscle to bone, cartilage covers ends of bones and acts as a "shock absorber."
Answer:
A
Explanation:
A is the right one
True or false: nutrition is not a result of cell division
which body system work together to allow the body to move
nervous system, skeletal system, and muscular system
All of the energy that drives Earth’s rock cycle comes from _____.
the wind
Earth’s interior and the sun
movement of water over Earth’s surface
the breakdown of organic matter
Your best answer would be the interior and the sun
A reef results from life processes. True False
Number the following events of plant evolution in sequential order.
1-rise of multicellularity.
2-rise of eukaryotes.
3-rise of chemoautotrophs and photoautotrophs.
4-rise of bryophytes.
5-rise of cyanobacteria.
6-rise of angiosperms.
7-rise of gymnosperms
Answer;
rise of chemoautotrophs and photoautotrophs rise of cyanobacteria - a specific type of phototroph that shares homology with chloroplast genome rise of eukaryotes rise of multicellularity rise of bryophytes - mosses rise of gymnosperms - conifers, cycads & ginkgo rise of angiosperms - flowering plantsExplanation;
Plants are multicellular organisms that have evolved the ability to live on land. The vast majority can carry out photosynthesis, but they are not the only organisms with this ability: many protists can photosynthesize too, as can several important groups of bacteria.
Plants are thought to have evolved from a class of freshwater green algae called the charophytes. Two particular groups of charophyte, the Coleochaetales and the Charales, resemble the earliest land plants (bryophytes) in a variety of ways, including the structure of their chloroplasts and sperm cells, and the way their cells divide during mitosis .
The correct order of the events of plant evolution is 2,5,3, 1, 4, 7 and 6.
The sequential order of the events of plant evolution:
2 - Rise of eukaryotes.
5 - Rise of cyanobacteria.
3 - Rise of chemoautotrophs and photoautotrophs.
1 - Rise of multicellularity.
4 - Rise of bryophytes.
7 - Rise of gymnosperms.
6 - Rise of angiosperms.
The evolution of plants are:
1. Rise of Multicellularity: This evolution marks the change from unicellular to multicellular life.
2. Eukaryotes are complex celled organisms that contain organelles that are bound by membranes.
3. Chemoautotrophs and photoautotrophs are organisms that can make their own food, and both are on the rise.
4. Photoautotrophs use sunlight, while chemoautotrophs require inorganic materials.
5. Emergence of Cyanobacteria: Blue-green algae, commonly called cyanobacteria, were the first photosynthetic organisms, and they had a major impact on the development of Earth's atmosphere.
6. Gymnosperms are a group of plants that have seeds that are not contained within the fruits from which they emerge. These include conifers, cycads, and ginkgo trees.
7. Angiosperms are the most numerous and dominant class of plants on Earth today. These are commonly called flowering plants.
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What is the shape of s dna molecule?
Final answer:
The DNA molecule has a double helix shape, resembling a spiral staircase, with complementary bases forming the steps or rungs. The B-form is the most common configuration in cells, and the structure's strength comes from the strong bonding of these base pairs.
Explanation:
The shape of a DNA molecule is known as a double helix, which can be likened to the structure of a spiral staircase in its appearance. In the context of DNA, the steps of this staircase are represented by pairs of complementary bases that bind together. These base pairs form the rungs of the ladder and are integral to the overall structure and stability of the DNA molecule.
The double helix of DNA consists of two strands of nucleotides that wind around one another. This double helical structure discovered by Watson and Crick is predominantly the B-form, which is the form of DNA most commonly found within cells. There are variations, such as the A-form that occurs under conditions of dehydration and the left-handed Z-form, but these are less common. The double helix is not only iconic in its aesthetics but also is vital for the biological function of DNA, such as genetic inheritance and protein coding.
Notably, DNA's double helix structure is extremely durable because of the natural binding of these complementary bases. The strength of this bonding makes the two polynucleotide chains of the helix difficult to break apart. The precise helical structure of DNA can also vary depending on factors such as base sequence, and it can exhibit structural idiosyncrasies like propeller twist or undergo movements like twisting, rolling, or sliding between pairs.
Select the true statement. A) RNA is mostly single-stranded; DNA is always double-stranded. B) RNA and DNA usually have identical nitrogenous bases. C) Several types of DNA help regulate protein synthesis.
Answer: The correct answer is -
A) RNA is mostly single-stranded; DNA is always double-stranded.
Explanation:
DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are the two different forms of nucleic acid that carry the genetic information in the form of nucleotide sequences.
RNA is generally single stranded that is it has a single strand of nucleotide sequences (for example, genome of human immuno deficiency virus is single stranded RNA).
On the contrary, DNA always occurs in double stranded form (such as genetic material of human beings) that is it has two strands of nucleotide sequences, which are antiparallel or complementary to each other.
Thus, A) option is the right answer.
The process of photosynthesis produces __________ and __________.
carbon dioxide; oxygen
sugar; carbon dioxide
sugar; oxygen
carbon dioxide; water
This is my biology assignment, what is the best option.
Thank you.
The process of photosynthesis in plants, algae, and certain bacteria produces sugar and oxygen. The sunlight energy splits water molecules in plants into hydrogen and oxygen. The hydrogen is used to convert carbon dioxide into sugar for the plant’s own growth and the oxygen is released in the atmosphere.
Explanation:The process of photosynthesis is crucial to the existence of life on earth. This biological process is carried out by plants, algae, and certain bacteria, where they convert light energy, usually from the sun, into chemical energy. The correct answer to your question, 'The process of photosynthesis produces __________ and __________,' is 'sugar; oxygen'.
Sunlight is captured by the chlorophyll in the cells of the plant, and it is this energy that splits water molecules into hydrogen and oxygen. The oxygen is released as a byproduct and the hydrogen is used to convert carbon dioxide into sugar, which the plant uses to grow and reproduce.
Therefore, photosynthesis primarily results in the creation of two products, sugar (for the plant’s own energy needs) and oxygen (which is released into the atmosphere and used by animals and humans for respiration).
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does spoiler increase or decrease friction between the rear and the road
A forty-five-year-old woman is a heavy drinker, smoker, and has had many sexual partners. Certain types of the female reproductive cancers run in her family. Based upon her history, which of the following conditions are controllable risk factors for this woman?
A.
her sexual partners and her age
B.
her age and heredity
C.
heredity and her sexual behavior
D.
her sexual behavior and smoking
Answer:
The correct answer is option D, that is, her sexual behavior and smoking.
Explanation:
In the given case, sexual behavior and smoking are the controllable risk elements for the woman. She has no control over her age, the number of sex partners she has had in the past, or her heredity. So she can now just try to minimize her risk of developing cancers by becoming more sensible when it comes to sex and should always make sure that is safe, and at the same time should either quit or reduce smoking.
HELP, What is the smallest type of stream?
A. Reservoir
B. River
C. Brook
D. Creek
1. For the pedigree in Figure 14-6, shaded symbols represent afflicted people. Males are squares; women are circles. If the trait is a sex-linked trait carried on the X chromosome, what is true about the mother represented by circle 1? *She has two alleles for the disorder. *She has one allele for the disorder. *She has no alleles for the disorder. *She has the genotype XXY
The answer to your question is:
B. She has one allele for the disorder.
I hope this helps
which chemical formula is a carbohydrate?
a) C3H7O2N
bC12H22O11
c)CO2
d)CH4
Chemical changes _____. alter the phase, or state, of matter increase the mass of a substance affect the chemical structure of a substance do not change the properties of substances
C-affect the chemical structure of a substance
Jellyfish and coral are closely related. Which statement explains why we can say this? Both are peudocoelomates. Both have bilaterally symmetrical bodies. Both are cnidarians.
Answer: Option C
Explanation:
Jellyfish and Corals both belong to Phylum Cnidaria thus, they are known as Cnidarians.
They both possess radial symmetry and in their defense mechanism they both use stinging tentacles which release venom for their protection. Due to this reason they are known as Nettle Animals.
Therefore the right statement is "Option C Both are cnidarians".
What always affects measurement error in an experiment?
A.investigator bias
B.variability in nature
C.instrument precision
D.misreading the instrument
What is an example of input during the process of photosynthesis of a plant?
Answer:
Sunlight
Explanation:
I just did the quiz, Hope it helps!
The genus Cnemidophorus is a large group of whiptail lizards that are found in both North and South America. These lizards undergo a process in which their unfertilized eggs can develop into new individuals.This process is called
A. sexual reproduction.
B. binary fission.
C. parthenogenesis.
D. budding.
Answer:
C. parthenogenesis.
Explanation:
Parthenogenesis is a type of reproduction which occurs in extreme conditions in which an off-spring is born from an ovum (egg) even if the egg does not get fertilized by the male gamete. It is a type of asexual reproduction. It is exclusive to only a few invertebrates and lower plants. Parthenogenesis term is derived from a greek word which means "virgin birth". Since the new individual is reproduced out of an unfertilized egg the progeny resembles only one parent i.e. mother.
Help please??? 4 questions
1. Earth's early atmosphere was shaped initially by which of the following?
A. Moving clouds
B. Respiration of mammals
C. Outgassing of volcanoes
D. Photosynthesis of land plants
2. Which way does the Coriolis effects deflect objects in the Northern Hemisphere?
A. To the right
B. To the south
C. To the north
D. To the left
3. Which way do monsoon winds blow during the summer months?
A. Counterclockwise
B. Toward the land
C. Toward the sea
D. Clockwise
4. Which of the following statements about the Coriolis effect is correct?
A. The Coriolis effect does not affect wind direction.
B. The Coriolis effect is not affected by wind speed.
C. The Coriolis effect is weakest at the poles.
D. The Coriolis effect works at right angle to the direction of airflow.
Earth's early atmosphere was shaped initially by the photosynthesis of land plants. Thus, the correct option for this question is D.
The Coriolis effects deflect objects to the right side in the Northern Hemisphere. Thus, the correct option for this question is A.
The way that monsoon winds blow during the summer months is towards the land. Thus, the correct option for this question is B.
The statement which is correct about the Coriolis effect is that the Coriolis effect is weakest at the poles. Thus, the correct option for this question is C.
What is the Coriolis effect?The Coriolis effect may be characterized as a type of effect which is stimulated by the rotation of the earth on its axis. This rotation circulates air toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere.
In monsoon, the air blows from the southwest during the warmest months of the year. The Coriolis effect is seen as weakest at the poles and strongest at the equator. It deflects the wind in the right direction. Instead of circulating in a straight pattern, the air deflects toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere.
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Final answer:
Earth's early atmosphere was formed by volcanic outgassing (option C). The Coriolis effect deflects objects to the right (which is option A) in the Northern Hemisphere. Summer monsoon winds bring heavy rains by blowing towards land (option B), and the Coriolis effect works at right angle to the direction of airflow (option D) and influences wind and ocean current directions due to Earth's rotation.
Explanation:
To answer your four questions:
Earth's early atmosphere was shaped initially by C. Outgassing of volcanoes.The Coriolis effect deflects objects to the A. right in the Northern Hemisphere.During the summer months, monsoon winds blow B. Toward the land, which is why summer monsoons are likely to bring heavy rains. The winds carry moist air from the ocean over land, where it cools and condenses to produce rainfall.The correct statement about the Coriolis effect is D. The Coriolis effect works at right angle to the direction of airflow. It is a consequence of the Earth's rotation, affecting winds and ocean currents, deflecting them to the right in the Northern Hemisphere.Which statement best explains homeostasis?
a process by which organisms keep internal conditions relatively constant despite changes in external conditions
a process by which organisms maintain a low level of energy use when faced with changes in external conditions
a process by which organisms seek a stable external environment when they can't change their internal conditions
The homeostasis is an organism's ability to maintain a stable internal environment. It is a mechanism that controls internal conditions of an organism so that internal conditions remain stable without regard to the external conditions. So, it regulates body temperature, water level, sugar level, etc. For example, if body temperature is increased, the body detects the change and activate mechanisms that decrease body temperature.
In humans, there is a phenotype for curly hair and a phenotype for straight hair. The homozygous dominant genotype CC is for curly hair, and the homozygous recessive genotype cc is for straight hair. Heterozygous Cc is a phenotype for wavy hair.
In a hypothetical population, 36% of people are born with straight hair (cc). What percentage of this population will have wavy h
Which best describes the importance of mitosis to living organisms?
genetic variation and growth
growth and development
development and sexual reproduction
sexual reproduction and genetic variation
Answer:
growth and development
Explanation:
The picture models a cellular metabolic process. What is the main purpose of this process?
A. producing phosphate groups
B. producing usable energy
C. producing ADP
D. producing H20
The main purpose of a cellular metabolic process is to produce the usable energy that is in Option B, as the cellular metabolism is for the production of the ATP that is needed by the cell.
What is the significance of the cellular metabolism process?The term "cellular metabolism" refers to the process by which the cell uses oxygen and glucose to produce ATP, which is then used in other distinct processes such as replication, movement of the cell's molecules, and so on, and excreting the debris or carbon dioxide outside. This is critical for cell function and survival, as the cell needs energy to live.
Hence, the main purpose of a cellular metabolic process is to produce the usable energy that is in Option B, as the cellular metabolism is for the production of the ATP that is needed by the cell.
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the classification of clouds is based on their...
A. Color and form
B. Density and color
C. Form and height
D. Height and density
Option C, form and height, is the right answer.
A cloud is an aggregation or accumulation of little water drops and icicle crystals that are dissolved in the planet atmosphere. They are bodies that consist of enormous density and dimensions and therefore it is apparent to unprotected eyes. The clouds are classified on the basis of their shape and height. Cirrus, Cumulus and Stratus are the three types of Clouds. These clouds are further divided on the basis of their altitude or height.
Which cell process requires energy expenditure?
A) osmosis
B) phagocytosis
C) passive transport
D) facilitated diffusion
The answer is B, Phagoctosis.
Phagocytosis cell process requires energy expenditure. So, the correct option is (B).
What is Phagocytosis?
Phagocytosis is the process in which a cell uses its plasma membrane to engulf a large particle which gives rise to an internal compartment called a phagosome. It is a type of endocytosis. A cell that performs phagocytosis is called a phagocyte.
In this process, a cell binds to the object it wants to ingest on the surface of the cell and pulls the object inward while wrapping itself around it. This process occurs when the cell is trying to destroy something. For example, a virus or an infected cell. This process is often used by cells of the immune system.
Extracellular ATP Is required for Efficient Phagocytosis.
Thus, Phagocytosis cell process requires energy expenditure. So, the correct option is (B).
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Which substance must be present for cellular respiration to take place?
Answer:
The substances that must be present for cellular respiration to occur are oxygen, enzymes, and organic molecules.
Explanation:
Cellular respiration is a process in which organic molecules are oxidized and production of ATP (adenosine triphosphate) occurs, which is used by living beings to meet their energy needs. Cellular respiration only occurs in the presence of oxygen, so this substance is inaccurate for this cellular process. The whole process of cellular respiration occurs with the action of enzymes that use an organic molecule as a substrate to create another molecule necessary for the cellular respiration process. For this reason, we can say that enzymes and organic molecules are also indispensable substances for cellular respiration.
If we were to boil the leaf disk what results would you expect?
Boiling the leaf disk is expected to hydrolyze its cell walls, making the leaf structurally softer, akin to cooking vegetables. This step is followed by 'bleaching' in hot alcohol to remove pigments, aiding in an Absorbance Spectrum exercise. Finally, an iodine test reveals the presence of starch as a blue-black coloration.
When boiling the leaf disk, several outcomes are expected based on different scientific principles. Initially, boiling serves to hydrolyze the cell walls of the leaf, effectively breaking them down. This step could be akin to cooking vegetables where they soften and change texture. In the context of the experiment, boiling the leaves is likely done for structural breakdown or for later steps such as chlorophyll removal.
Following this, the pigments from the leaves can be removed by placing them in hot alcohol—this process is referred to as "bleaching". The pigments dissolve into the alcohol, which could later be used for an Absorbance Spectrum exercise. Finally, the addition of iodine to the now colorless leaves tests for the presence of starch; a blue-black color indicates it is present.
In a broader scientific context, boiling can be likened to the process in which gases in the early solar nebula condensed into liquids or solids, or how raindrops form on Earth. However, the specific results from boiling a leaf disk are related to cell wall hydrolysis, pigment removal, and subsequent testing for biochemicals like starch.
When animal cells undergo cell division, several cellular structures aid the the movement of chromosomes into the two new daughter cells. What are these cellular structures?
What are the stages in the cell cycle?