Answer:
A. True
Explanation:
The last universal common ancestor or last universal cellular ancestor (LUCA), also called the last universal ancestor (LUA), is the most recent population of organisms from which all organisms now living on Earth have a common descent—the most recent common ancestor of all current life on Earth.
Answer:
A. True
Explanation:
Yes, all life shares the same evolutionary heritage from an ancestor that appeared 3.8 billion years ago.
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
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.
Label the male reproductive system.
Answer:
Refer the attachment!!!An invasive species the spiny water fea, was recently found in a New York lake These water feas eat zooplankton a food also consumed by native fishes. The
Das spread trom lake to take by attaching to fishing lines anchor ropes, and boats which statement best describes the effect of the water tea on the lake?
It will not compete with animals in the local food chain
It will feed on organisms that are important to other species
The number of water teas will decrease due to a lack of food
There will be no effect on native species in the lake
Answer:
It will feed on organisms that are important to other species
Explanation:
Its an invasive species that is stealing food.
Which of the following is NOT a characteristic of life?
A.Made of one or more cells
B.Movement
C.Requires Energy
D.Adapts over time
Answer:
The answer should be C
Explanation:
Life is made of cells, life moves and also adapt over time...but I don't think it requires energy
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.
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.
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.
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.
Can someone pls tell me if it’s A or D
Answer:
D................................
Answer:
D
Explanation:
1. In what four forms of matter is water found on Earth?
Explain your answer (give examples).
WILL IVE BRAIN?? Why might humans not have widespread regeneration abilities?
Answer: because mammals have more complex biological structures; limb regeneration would require sophisticated controls to ensure that limbs and organs don’t grow out of control.
Explanation:
Qué le debe pasar al Nitrógeno (N) para poder ser utilizado por los organismos?
Answer:
Tiene que ser convertido o 'arreglado' a una forma más utilizable a través de un proceso llamado fijación.
Study the image of ammonia. How many atoms of each element bond together to create this molecule?
please help..
its sciences
From the image, we can see that:
3 atoms of Hydrogen element and 1 atom of Nitrogen element bond together to create Ammonia molecule.
how meiosis turn one cell into four new sex cells?
Answer:
A single round of DNA replication occurs in the parent cell, followed by two distinct nuclear division cycles. The process produces four haploid daughter cells, each with half as many chromosomes as the diploid parent cell.
Explanation:
During sexual reproduction, meiosis produces the sex cells that combine to make new children.
Meiosis is a type of cell division that results in the formation of sex cells (egg and sperm). And that is brought together to generate new progeny through the act of sexual reproduction.
Meiosis generally results in 4 haploid daughter cells, meaning half no chromosomes are contained in diploid cells.
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.
.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.
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:
homeostasis in the human body is usually maintained by?
Answer:
Homeostasis is controlled by the nervous and endocrine systems in mammals.
Explanation:
Is mowing grass a physical or chemical change?
Explain how you know what kind of chnage occurred
A group of fibers inside the cell that helps support the cell is the _____.
filament
flagella
microtubule
cytoskeleton
On a cold day, the temperature of the air reaching alveoli is raised in the nasal passages because the
What will most likely result if a diabetic injects an overdose of insulin?
A. a serious infection in the pancreas
B. an increase in the production of pancreatic enzymes
C. an accumulation of wastes in the bloodstream
D. a dangerous drop in blood sugar levels
Answer:
d a dangerous drop in blood sugar which can lead to a coma
Answer:
D) a dangerous drop in blood sugar levels will most likely result if a diabetic injects an overdose of insulin?
hope this helps!!!
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.
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
At which latitude were these apparent Sun paths most likely observed?
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:
Explain how limited abiotic factors can impact the biotic factors in an ecosystem?
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.
Learn more about Rotation, here:
https://brainly.com/question/15672596
#SPJ6
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?