Answer:
a
Explanation:
a nucleotide consists of a phosphates sugar and nitrogen base.
Can someone help with this?
Answer:
The first option
Explanation:
Answer:
the first one
Explanation:
Spermatogenesis and oogenesis are the processes of formation of male and female gametes. Spermatogenesis leads to the formation of sperms, whereas oogenesis helps in the formation of ova. The fertilization of sperm and ova leads to the formation of a zygote which further develops into an embryo.
What is the microscopic nature of a cell ?
Why nucleus is said to be the controller of cellular activities ?
How is a cell adapted to its small size?
Answer:
No 1 answer They require sophiscated tools. The microscopes help in the study of cells. The molecular study of the cells are performed by the help of electron microscope. So, we can say that cells are microscopic in nature.
Explanation:
No 2 answer The nucleus is the largest and most prominent of a cell's organelles (Figure 3.7). The nucleus is generally considered the control center of the cell because it stores all of the genetic instructions for manufacturing proteins.
No 3 answer Smaller single-celled organisms have a high surface area to volume ratio, which allows them to rely on oxygen and material diffusing into the cell (and wastes diffusing out) in order to survive. The higher the surface area to volume ratio they have, the more effective this process can be.
Is mowing grass a physical or chemical change?
Explain how you know what kind of chnage occurred
What are 3 environmental factors in the natural reserve that affect which mice in a population survive to produce. And do these factors affect the genotype or the phenotype of the mice populations or both?
A utility company has proposed building a natural gas power plant next to a lake. The picture below shows the proposed power plant.
The company claims burning natural gas will release only harmless gases such as water vapor (H2O) and carbon dioxide (CO2). Why would environmental scientists disagree with this claim?
A
The emission of carbon dioxide leads to rapid cooling of the Earth’s lakes and oceans.
B
The emission of carbon dioxide leads to an increase in the temperature of the atmosphere.
C
The emission of water vapor leads to a decrease in the humidity of Earth’s atmosphere.
D
The emission of water vapor pollutes the atmosphere, causing harm to plants and animals.
Answer: B is right
Explanation: Carbon dioxide is a greenhouse gas which is involved
with increasing temperature of atmosphere
NEED AN ANSNER VERY QUICKLY
Which statement is factual?
1.Asexual reproduction produces offspring that are identical to the parent.
2.Sexual reproduction allows for diploid gametes to combine to increase genetic variation.
3.Asexual reproduction leads to the formation of haploid gametes.
4.Sexual reproduction does not require the production of gametes.
Answer:
1
Explanation:
What kind of letter is used to represent a dominant allele?
A. Lowercase
B. Capital
Answer:
B. Capital
Explanation:
Capital letter is used to represent a dominant allele.
Why do plants need water, light, and carbon dioxide?
Answer;
these are used in photosynthesis altogether. light splits the water into hydrogen and oxygen. water is used to manufacture starch, soften the testa during germination, dissolve food as well. carbon dioxide is also used during photosynthesis.
How long does it take the moon to rotate on its axis?
about 25.3 days
about 27.3 days
about 30 days
about 2 months
Answer:
27.3 days
Explanation:
The Moon takes 27.3 days to rotate on its axis as the Moon takes 29.5 days to revolve around the Earth. So, the correct option is B.
What is Rotation?Rotation is defined as the circular movement of an object around a central axis where a two-dimensional rotating object has only one possible central axis and can rotate in a clockwise or counterclockwise direction, while a three-dimensional object has an infinite number of possible centers that is axes and rotational directions.
The Moon orbits the Earth in the same direction, completing one orbit relative to the vernal equinox and the stars in about 27.32 days while one orbit relative to the Sun takes about 29.53 days.
Thus, the Moon takes 27.3 days to rotate on its axis. So, the correct option is B.
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Question 5 of 30
What information can a scientist learn directly from a single fossil?
A. The organism's shape and size
B. How the organism is related to others
C. The life expectancy of similar organisms
D. How many offspring the organism produced
SUBMNT
Answer:
C. The life expectancy of similar organisms
Which of the following processes transfers carbon directly from sea water to sea plants
The body breaks down the lipids that we consume to create...
Answer:
FATTY ACIDS AND GLYCEROL
Explanation:
A cornfield include corn plants my socks and various insects fungi and bacteria which nutritional role is correctly paired with organisms that carry out that role
Answer:
oh i dont know
Explanation:
In non-muscle cells, a small increase in the cytosolic concentration of Ca2 can have a dramatic effect on several physiological processes. The presence of a specific protein in the cytosol, however, activates a Ca2 ATPase that serves to return these elevated cytosolic Ca2 levels back to basal levels, thereby maintaining the cell's normal physiology. Which protein is directly involved in activating this Ca2 ATPase
Answer:
calmodulin
Explanation:
The calcium-modulated protein (calmodulin) is a calcium-binding receptor protein that modulates contractile proteins (i.e., actin and myosin proteins) of the skeletal muscle and non-muscle cells (e.g., platelets). Calmodulin binds to calcium ions (Ca2+) and subsequently activates a number of Ca2+ dependent enzymes (e.g., kinases or phosphatases), which finally activate/deactivate proteins in the calcium signal transduction pathway. Ca2+-ATPase pumps in the membranes of eukaryotic cells release Ca2+ from the cytoplasm and they are autoinhibited by low Ca2+ levels, while calmodulin-binding releases this autoinhibition and thus activates the pumps. In non-muscle cells such as platelets, calmodulin also mediates Ca2+ control of actin-myosin interaction by phosphorylation of the myosin light chain (MLC).
.Amoeba is a microscopic, single-celled organism that does not have a fixed shape. Write the similarity and differences between nutrition in Amoeba and human beings.
Answer:
The similarity and difference between the nutrition in Amoeba and human beings is as follows:
Explanation:
Nutrition is similar in both humans and amoeba however, there are different nutrition modes in both organisms.
Similarity: Human has complex digestive system while amoeba is a unicellular organism with simple digestion, however, they both use digestive juices. In amoeba, the digestive juices secreted into the food vacuole whereas, the digestive juices are secreted in the stomach and small intestine in humans.
Difference: Amoeba engulfs the food with the help of pseudopodia whereas, humans use the mouth for food intake.
which of these animals did NOT benefit from the reintroduction of wolves into Yellowstone?
a. rabbits
2. bears
3. elk
4. beavers
5. Why are people concerned with the pollution of groundwater
resources?
I
Answer:
They are concerned because that is natural water. Water, for ALL organisms is needed to live, so we also have to keep it safe for us and there life to live.
Explanation:
hope this helps
What is the monomer (building block) of proteins?
A. Nucleic Acids
B. Amino Acids
C. Monosaccharides
D. Nucleotides
Answer:
Amino Acids
Explanation:
Answer:
B. Amino Acids
Explanation:
Amino Acids are the monomer (building block) of proteins.
1. In what four forms of matter is water found on Earth?
Explain your answer (give examples).
In the anatomical position, the face and arms are on the __(1)__ body surface; the buttocks and shoulder blades are on the __(2)__ body surface; and the top of the headis the most __(3)__ part of the body. The ears are __(4)__ to the shoulders and __(5)__ to the nose. The heart is __(6)__ to the vertebral column (spine) and __(7)__ to the lungs. The elbow is __(8)__ to the fingers but __(9)__ to the shoulder. The abdominopelvic cavity is __(10)__ to the thoracic cavity and __(11)__ to the spinal cavity. In humans, the dorsal surface can also be called the __(12)__ surface; however, in quadruped animals, the dorsal surface is the __(13)__ surface.
Starch is the most common carbohydrate that is found in the leaves of green plants. Describe a test that the students could do in the laboratory to investigate whether starch is present in the leaves of seedlings.
Answer:
Iodine solution test
Explanation:
Add an iodine solution to the leaves, the color will be yellow or brown at first but if it changes to a blue or black that means there is starch present, hope that helps! :)
On a cold day, the temperature of the air reaching alveoli is raised in the nasal passages because the
What is a mutation?
A. A change that occurs in RNA only
B. A change that occurs in DNA only
C. A change that occurs in DNA or RNA
Answer:
C. A change that occurs in DNA or RNA
Explanation:
Mutation is a change that occurs in DNA or RNA. So, option (C) is the correct answer.
The ___ of water molecules and the hydrogen bonds between water molecules explain most of water's life-supporting properties.
The ___ of water molecules to each other helps transport water from the roots to the leaves on plants.
When water warms or cools, ____ either break or form.
Thus, water absorbs or releases a great deal of ____, helping to moderate temperatures.
Water is a versatile ____.
Blood and other biological fluids are aqueous solutions with a diversity of dissolved ______.
Answer:
The polarity of water molecules and the hydrogen bonds between water molecules explain most of water's life-supporting properties.
The cohesion of water molecules to each other helps transport water from the roots to the leaves on plants.
When water warms or cools, hydrogen bonds either break or form.
Thus, water absorbs or releases a great deal of heat, helping to moderate temperatures.
Water is a versatile solvent.
Blood and other biological fluids are aqueous solutions with a diversity of dissolved solutes.
Explanation:
The sentences presented in the question above had their various spaces complemented by the words that best fit the sentence and that were capable of forming true invormations on water.
Water is a very versatile solvent as it is capable of dissolving and mixing with various substances both liquid and solid. Furthermore, water has a great capacity to absorb or release heat, which is very useful for the entire planet, as this allows water to be very efficient in regulating temperature.
Water is formed by H2O molecules, which hold these molecules together are the hydrogen bridges formed between them. Hydrogen bridges are broken through heat, which allows the water to evaporate, but at low temperatures these bridges are strengthened and new bridges can be created, which allows the water to become solid.
The properties of water are extremely important for life on the planet and for most biological processes we know about. Among these properties we can mention polarity and cohesion as one of the most important. Polarity allows water to be a polar substance, while cohesion allows water to create an attractive relationship between molecules.
For this lesson, my challenge for you is to solve the mystery and find out what is the reason why we have different weather
disturbances in our country. Are you ready? Good luck on another journey, our brave, young scientist! Solve the mystery word
by guessing the hidden words of the number codes. (Coding example 1=A, B=2…)
2-18-5-5-26-5-19 9-20-3-6
13-15-14-19-15-15-14-19
Why do weather patterns in our country vary from time to time?
Answer: Breeze sitc monsoon
Explanation:
Without knowing the genetic differences of the birds, how can we know that cardinals and finches are likely more closely related to each other than cardinals and finches are to woodpeckers? Cardinals and finches live in more similar habitats. There is no difference in their relatedness; because they are all birds, they all evolved at the same time from a common ancestor. Cardinals and finches have more morphological similarities. Fossil records show that cardinals have been around longer than woodpeckers and sparrows.
Answer:
The correct answer is - Cardinals and finches have more morphological similarities.
Explanation:
To find out the relatedness of the different species or organisms one can use genetic mapping to find precise relatedness, however, if one can not find the genetic differences of the organism one can use the morphological similarities and differences to find out how closely they are related.
Homologous structures and analogous structures are two major morphological characters to find how closely related cardinals and finches are than cardinals and finches are to woodpeckers.
The body of a tiger is made of many types of cells, such as muscle cells and nerve cells. All of the tiger's cells are eukaryotic. What else is true about the tiger's cells?
a) They are similar to bacterial cells.
b) Their organelles do not have a membrane.
c) Their is located in the nucleus.
d) They all have a looped strand of DNA
Answer:
I would pick ...d
Explanation:
Every cell in the body has a loop of spiral staircase of cells that help pass genetic information to new cells.
which of the following statements describes were all members of a population share
Answer:
They are temporally isolated from each other. They are geographically isolated from each other. They are members of the same species
All members of a population share the characteristic of belonging to the same species. Therefore, the correct option is C.
What is a population?A population is defined as a group of organisms of the same species that live in the same geographic area and are able to interbreed with one another. This means that they share many common traits and characteristics, such as physical appearance, behavior, and genetic makeup.
Option a (temporal isolation) and option b (geographic isolation) are not the characteristics that all members of a population share.
Option d (identical genes) is also not correct, as members of a population may have genetic variation due to mutations, genetic recombination, and other factors. Therefore, the correct option is C.
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The question is incomplete, but most probably the complete question is,
Which of the following statements describe what all members of a population share?
a. They are temporally isolated from each other.
b. They are geographically isolated from each other.
c. They are members of the same species.
d. They have identical genes.
PLEASE HELP WILL MARK BRAINLIEST
Answer:
AO and BO
Explanation:
For the offspring of two parents to have a recessive trait, both parents must have the recessive trait. In this case, the brother has type O blood, meaning both of the parents must have the type O blood present in their genotype, which is why the answer is AO and BO.
Answer:
AO and BO
Explanation:
if you cross the parents the possible outcomes are
A O
B ║AB BO
║
O║AO OO
does Mars has Oxygen? Can we breath on Mars?
Answer:
There is Oxygen in Mars comprising the 0.13% of it's atmosphere. With that, it is still impossible for humans to breathe on the said planet without suits with oxygen supply.
Answer:
yes
Explanation:
Mars atmosphere is dominated by carbon dioxide (CO2) at a concentrated of 96%. Oxygen is only 0.13%.