Answer:
Magnesium is in the group #2 on the periodic table of elements. This means it has two valence electrons.
Answer:
two
Explanation:
Which of the following plant propagation methods requires sterile conditions?
• hybridization
• clone by layering
• root division
• tissue culture
2. Image formed by a plane mirror is
(a) virtual and erect
(b) real and erect
(c) virtual and inverted
Answer:
a) virtual and erect
Plane mirrors are the only type of mirror for which a real object always produces an image
which 3 statements of these are true? ( I put a picture attached to this ) please help I will give brainliest if correct
Answer:
The name of the element is carbon, there are 6 protons, and nitrogen has a smaller atomic number.
Explanation:
The atomic number of carbon is 6, not 12.
The atomic mass of carbon is 12.01g, not 12.
It does have six protons, it has a larger atomic number (6) than nitrogen (5) and it is called carbon.
Which of the following is not one of the parts of the cell theory?
A. All organisms are composed of one or more cells.
B. All cells come from preexisting cells.
C. Groups of cells form tissues and systems.
D. The cell is the basic unit of structure and organization
The botanist wanted to produce a generation of snapdragons that all had pink flowers.
State the phenotypes of the parent plants that the botanist would need to cross.
Explain your answer.
Answer:
He would need to cross one homzygous red (RR) and homzygous white (rr)
Explanation:
Flower color in snapdragons is controlled by a gene whose alleles exhibits incomplete dominance. The allele for red coloration (R) is incompletely dominant over the allele for white coloration (r). The intermediate phenotype that is produced in an heterozygous state (Rr) is PINK.
According to this question, a botanist wanted to produce a generation of snapdragons that all had pink flowers (Rr). This means that in order to do this, the botanist would need to cross a red snapdragon plant (RR) and a white snapdragon plant (rr) to produce an 100% Pink (Rr) snapdragon in the F1 generation.
Will mark Branliest if correct. (I think B, but I am not sure. It doesn't seem to be D.)
What makes mitochondrial DNA useful as a molecular clock? (2 points)
It is only found in select organisms, making it easier to compare relationships between species that have it.
A large portion of the DNA ring is not vital to structure or function, allowing it to accumulate neutral mutations.
Its rate of mutation increases over time as organisms continue to evolve and differentiate from each other.
A slow mutation rate makes it useful for determining evolutionary relationships between ancient species.
Answer:
Mitochondrial DNA is useful as a molecular clock because it displays uniparental inheritance
Which of these processes do not occur as a part of the cell cycle in the animal cells
suppose you find a paper clip stuck to a magnet you pull off the paper clip and move it to a short distance away from the magnet what happened to the magnetic Force between the magnet and the paper clip A. it disappears B. it gets stronger C. it gets weaker D.it stays the same
Answer: C
Explanation: it gets weaker because there not as close together
What is the function of erythrocytes?
What is the term for all the components of the blood?
What is blood?
Answer:
1. The main physiological role of red blood cells (RBCs), or erythrocytes is to transport of gases (O2, CO2) from the lung to the tissues and to maintain systemic acid/base equilibria. In addition, RBCs are well equipped with antioxidant systems, which essentially contribute to their function and integrity.
2. In humans, it includes plasma (the liquid portion), blood cells (which come in both red and white varieties), and cell fragments called platelets. Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in.
3.Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.
hope it will help uPls help quick plzzzzzzzz
1. Flowers must rely on vectors to move pollen. These vectors can include wind, water, birds, insects, butterflies, bats, and other animals that visit flowers. We call animals or insects that transfer pollen from plant to plant “pollinators”.
2. Germination:When a seed falls on the ground, it needs warmth and water in order to germinate; some seeds also need light. Dicots have seed coats that soften with moisture. After being planted in the soil for a few days, the seed absorbs water and swells until the seed coat splits.
Enter the correct 4 digit code (no spaces)
The hidden code in the puzzle is 4321.
How to solve the riddle?The riddle in the picture has the objective of hiding the order of the numbers so that the reader finds the order. In this puzzle the reader must follow the line of each letter and find the order of the numbers to find the code.
Based on the above, it can be inferred that:
The letter A line leads to the number 4.The letter B line leads to the number 3.The letter C line leads to the number 2.The letter D line leads to the number 1.So the complete code would be:
4321Learn more about riddles in: https://brainly.com/question/478260
Answer:
It's actually 3214
Explanation:
An ocean basin is
A. The layer of the ocean closest to the surface
B. A part of earth’s surface covered by ocean water
C. A continuous body of water that covers 70%of earth
D. A deep trench along the floor of the ocean
Answer: A
Explanation:
An oceanic basin is the land surface under an ocean that includes the various topography below the water. This includes the continental shelf, abyssal plain, mid-ocean ridge and other formations that may exist on the seafloor.
A pine tree is a conifer. What type of plant is a conifer?
an
angiosperm
a gymnosperm
Answer: A subset of Gymnosperms
Explanation: They are cone-bearing seed plants
A baker activates yeast cells with hot water, and adds sugar as their source of food. As the yeast begin their metabolic processes, the bowl it is in is covered with plastic so that no oxygen can get to them. At this point, the yeast will __ *
1 point
a. produce far more ATP than is necessary in response to the lack of oxygen
b. continue to go through aerobic respiration if enough sugar is present
c. die since all living organisms need oxygen to survive.
d. perform anaerobic respiration in the absence of oxygen
Answer:
The correct answer would be - option D. perform anaerobic respiration in the absence of oxygen.
Explanation:
Yeast is a facultative anaerobic single-cell organism that can live without oxygen. If yeast cells did not get the oxygen they use anaerobic respiration to get the energy.
If the baker activates these cells and stops them to get oxygen the yeast cells have to switch to anaerobic respiration to survive and produces ethanol and releases carbon dioxide.
Consider this claim: changes in the environmental conditions always result in new ecosystems and lost of biodiversity charactera.
Answer:
Yes.
Explanation:
Yes, changes in the environmental conditions of a specific region result in formation of new ecosystems as well as the lost of old biodiversity occur because the organisms of that old ecosystem can't tolerate the change that occurs in the environment so they become extinct or migrated to another suitable place and only those organisms begins to live which can survive in that environmental conditions.
Which statement best describes an autotroph?
Answer:
B Autotrophs make their own food because they are producers.
Explanation:
help pls!
“How might an energy requirement affect an individual who has a cancerous tumour?”
Answer:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function. Energy is stored in the bonds of glucose (like a stretched rubber band), and when glucose is broken down, much of that energy is released. Some of it is captured in a form that can be used to do work in cells - a molecule called adenosine triphosphate or ATP. The energy that is not captured in ATP is usually given off as heat (one of the things that helps us maintain our normal body temperature).
Why is it possible that two ecosystems with identical conditions of temperature and precipitation, could support different plants?
Answer:
Because even if they are similar, they still have a difference between them, and that difference helps other plants.
It is possible because plants require other factors like sunlight and soil nutrients) other than Temperature and precipitation to grow
Plants require some Important factors for its growth and development and they are :
Temperature precipitation Sunlight soil nutrients type of soilThe two ecosystems with identical conditions of Temperature and precipitation might have differences in the amount of sunlight they receive and the Nutrients contained in its soil. therefore the ecosystems although similar can support different plants based on the difference in the amount of sunlight and Nutrients contained in the soil.
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which birth control method involves the cutting of sperm tubes or the oviduct?
the surgical method carried out in males is called ( Vasectomy) = cutting of sperm tube
in female it is ( tubectomy)
cutting of oviduct
Elephants shape their environment in many ways. They can change a forest to a grassy field or dig a hole that might become a pond. They clear large amounts of vegetation, which removes habitats for some organisms but makes the area inviting for other organisms. Which best describes possible interactions of elephants with the surrounding ecosystem?
positive
negative
neither positive nor negative
both positive and negative
Answer:
☁︎both positive and negative. for making ponds for other animals to live in but clearing large amounts of vegetation☁︎
Based on their activities, it can be concluded that Elephants have both positive and negative effects on their environment.
What is a Habitat?A habitat is refers to a place where a living organism is found.
The activities of an organism affects the habitat of that organism.
What is the impact of Elephants on their habitat?Elephants shape their environment in many ways, both positive and negative.
They can negatively impact their environment by changing a forest to a grassy field.
They can positively impact their habitats by creating new habitats from existing habitat such as by digging a hole that might become a pond.
Therefore, it can be concluded that Elephants have both positive and negative effects on their environment.
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Which gene mutation would have the smallest impact on a protein's amino acid sequence?
Answer:
Point mutation
Explanation:
Point mutation is a kind of mutation that involves a single nucleotide base. Generally, mutation is any alteration that occurs to the genetic sequence of an organism, however, point mutation involves only one base of the numerous in the sequence.
Point mutation can be an insertion, substitution, deletion etc, but it is the gene mutation that would have the smallest impact on a protein's amino acid sequence. This is because the change to the genetic sequence involves a single base.
Drag the labels to the correct locations. The labels may be used more than once.
Imagine that a space shuttle carrying astronauts is launched from Earth to the International Space Station (ISS). As the shuttle travels toward the ISS, it will encounter different layers of Earth’s atmosphere.
helppppppppppppp Determine the change in temperature that the shuttle will experience while passing through each atmospheric layer.
temperature decreases with altitude
temperature increases with altitude
Answer:
Troposphere - temperature decreases with altitude
Stratosphere - temperature increases with altitude
Mesosphere - temperature decreases with altitude
Thermosphere - temperature increases with altitude
Here's a visual to to the changes in temperature as altitude increases:
how many layers are in earth atmosphere ?
The Earth’s atmosphere is layered and each layer of the atmosphere has its own specific traits. The atmosphere of Earth is divided into four layers as Troposphere, Stratosphere, Mesosphere and Thermosphere
Generally, temperatures decrease with increasing height because the atmosphere distributes itself according to gravity. In the troposphere, the temperature generally decreases with altitude. The reason is the troposphere's gases absorb very little of the incoming solar radiation.
Troposphere - temperature decreases with altitude
Mesosphere - temperature decreases with altitude
The temperature increases with increasing altitude in the stratosphere because there’s a high concentration of ozone molecules.
Stratosphere - temperature increases with altitude
Thermosphere - temperature increases with altitude
to learn more about earths atmosphere
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What is the normal pathway a cell uses to make and release proteins?
ribosome -> ER -> Golgi -> released
lysosome -> Golgi -> ER -> released
ribosome -> Golgi -> ER -> released
ribosome ->lysosome -> ER -> released
Answer:
ribosome -> ER -> Golgi -> released
Explanation:
Ribosomes are where proteins are created, ribosomes are located on the rough endoplasmic reticulum (RER). From the ER, proteins will be transported to the Golgi Complex for packaging, transport, and release. The answers with lysosome can be ignored because lysosomes break down waste materials of the cell. Therefore the answer is ribosome -> ER -> Golgi -> released.
What is the atomic number of sodium?
Answer:
the atomic number of sodium is 11
11 is the atomic number of sodium
Help Please ASAP
Which of the following produces identical cells?
A) meiosis
B) mitosis
C) gamete formation
E) sexual reproduction
Answer:
Mitosis
I hope this helped :))
Which of the following are reasons Earth's atmosphere makes conditions suitable for life? (multiple answers)
stops earthquakes
protects us from harmful radiation
traps heat
provides oxygen for breathing
Answer:
B and C I think
Explanation:
Those ones make the most sense in my opinion.
What is the term used for secretions of endocrine glands responsible for changes taking place in the body?
Answer:
Hormones
Explanation:
Hormones is the term used for chemical secretion of endocrine glands responsible for changes taking in the body.
How did humans change the
environment?
Answer:
Humans changed the environment by: overpopulation, pollution, burning fossil fuels, and deforestation.
Explanation:
Answer:
Explanation:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
The diagrams show what happens to the shape of a plant cell place in distilled water. Explain why the cell swells and becomes turgid. Name the process involved.
Answer:
the name of the process should be osmosis
Explanation: Reason being that plant cells are hypertonic because they have a cell sap so when they are pout in distilled water which is a hypotonic solution, it then absorbs water by osmosis and swells up and become turgid. But they do not burst because they have a cell wall that develops a wall pressure that balances the turgor pressure exerted by turgid cells
PLEASE HELP FAST WILL GIVE BRAINLIEST