Biology High School

What is the phenotype ratio for this cross?

Answers

Answer 1

Answer:,,

Explanation:

Answer 2

Answer:

3 long and 1 short

Explanation:

3 of the squares have the dominant allele for long needles (L) therefore all 3 would all have long needles because in order for a cactus plant to have short needles it would have to have only the short allele (l) like the one on the bottom right corner

Related Questions

Most planets orbit the Sun in an __________________.

A) elliptical path

B) circular path

C) triangular path

D) any random path

Answers

the answer is A, elliptical path

The first planet to be discovered using mathematical prediction was:
Neptune
Uranus
Jupiter
Saturn

Answers

Answer:

Neptune :)

Explanation:

Answer:

A. Neptune

Explanation:

At boxing practice, Nathan works with his coach to improve the strength of his punch.
Nathan says that the reason the bag is heavy is so that it can absorb plenty of elastic potential energy. Is he correct?

Answer Choices
A. Yes, he is correct.
B. No, the bag absorbs thermal energy.
C. No, the bag absorbs gravitational potential energy.
D. No, the bag is heavy so that its mass will only accelerate a small amount when he punches it.

Answers

A.Yes, he is correct

What is cellular respiration? Use complete sentences to explain how the mass of carbon is conserved during cellular respiration. (10 points)

Answers

Answer:

Please give me brainlist.

Explanation:

Cellular respiration is a chemical process which breaks downs a 6 carbons compound into 3 carbon dioxide molecules and water molecules in the presence of oxygen and produces a huge amount of energy in form of ATPs.

Cellular respiration is a chemical process which breaks downs a 6 carbons compound into 3 carbon dioxide molecules and water molecules in the presence of oxygen and produces a huge amount of energy in form of ATPs.

What is Cellular respiration?

In the presence of oxygen, cellular respiration is a chemical process that converts a substance with six carbons into three carbon dioxide and water molecules and enormous amounts of energy in the form of ATPs.

Simply put, cellular respiration is a sequence of metabolic processes that happen inside a cell. For usage in the energy-demanding processes of the cell, biochemical energy is extracted from organic materials.

It is stored in energy-carrying biomolecules (such as adenosine triphosphate or ATP).

Therefore, Cellular respiration is a chemical process which breaks downs a 6 carbons compound into 3 carbon dioxide molecules and water molecules in the presence of oxygen and produces a huge amount of energy in form of ATPs.

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help me will reward brainliest

Answers

I think it is Intercalary Option C

are all cells going through the cell cycle at the same speed? why or why not?

Answers

Answer: Not all cells move through the cell cycle at the same rate. Proteins that regulate the timing of the cell cycle. Most of the differences in cell cycle duration between species and cells are found in the duration of specific cell cycle phases. DNA replication, for example, generally proceeds faster the simpler the organisms.

what happens when there is a decrease in carbon dioxide during gas exchange in the body?

Answers

Answer:

Increased carbon dioxide means increased blood acidity, while decreased carbon dioxide means increased blood acidity.

The bicarbonate reaction is reversible, which allows bicarbonate to turn back into dissolved carbon dioxide to diffuse from the alveolus.

Where does a clinical trial usually take place?
O A. In a hospital
B. In a test tube
c. In a placebo
D. In a petri dish

Answers

The answer is a. In a hospital.

Which of the following is most helpful for identifying an organism using a dichotomous key?
O Its average lifespan.
0 Its sources of food.
O Its habitat.
O Its physical structures.

Answers

I believe it’s by the traits, so it would be physical structures. Because of there’s only two options available, which is see better by the traits of the unknown specimens.
Lol I think thouuuu cuz I do fully remember everything.

Which step in the process of cellular respiration produces the most ATP?
glycolysis
citric acid cycle
electron transport chain and oxidative phosphorylation
fermentation

Answers

Answer:

c. electron transport chain and oxidative phosphorylation

Explanation:

Can someone help me with this?

Answers

Answer:

the last option is the answer

the answer is Genes received from their parents!!

Ok plz help I have this project and it’s already a day overdue but I spend over an hour searching this so if u know plz tell me ok so I need an example of each type of stimuli. The kinds are chemical, mechanical, and thermal

ALSO 50 POINTS AND BRAINLIEST IF YOU ANSWER

Answers

Answer:

three types of stimuli—mechanical, thermal, and chemical; some endings respond primarily to one type of stimulation, whereas other endings can detect all types. Chemical substances produced by the body that excite pain receptors include bradykinin, serotonin, and histamine.

Explanation:

____________The following codon belongs to an mRNA molecule: TAC.

True
False

Answers

Answer:

true

Explanation:

because the TAC does in fact belong to an mRNA molecule

The answer is true!!

Lungs in humans and many other species branch out into many tubes until they end in small sacks called alveoli. These alveoli allow oxygen to enter the blood through the capillary beds as pictured above. Alveoli provide much more surface area for the lungs to contact the capillary beds. What is the advantage of lungs with alveoli compared to lungs without alveoli?

Answers

Answer:

It provides more surface area for the absorption of oxygen.

Explanation:

The advantage of lungs with alveoli compared to lungs without alveoli is the availability of large surface area for the oxygen absorption. Alveoli allows oxygen from the air to pass into your blood. There are 480 million alveoli are present in human lungs, this large number and small size of alveoli provides lungs a large surface area to volume ratio so we can conclude that the lungs work better with the help of alveoli as instead of lungs without alveoli.

please please please help me on me I need it ASAP

Answers

The answer is
1. C
2. B

According to Darwin's theory of evolution, what causes a struggle for survival in
populations?

Answers

Answer:

In a population, more individuals are born than can survive. The available resources in nature are finite (food, water, space, etc.) and the environment is not able to support unlimited growth of a population. This causes an inevitable struggle for existence among individuals (continual struggle for existence).

Explanation:

A $10 shirt is on sale for 25% off the price. What is the sale price of the shirt?

Answers

Yes the answer is $7.50

does anyone know the answer to this?

Answers

Answer:

hello! it is A.

Explanation:

during mitosis the cell divides into two identical daughter cells!

it’s answer D. the chromosomes are copied.

Which of the choices below would determine if a protein will perform a specific function for the cell?

A.The monosaccharides that make up the protein
B. The nucleic acids that make up the protein
C. The shape of the protein
D. The fatty acids that make up the protein

Answers

Answer: C

Explanation:

The folding of the protein determines the structure. Each polypeptide has a primary structure all the way up to quartenary structure which allows the protein to fold based on the R groups of the amino acids. If the structure of the protein is disturbed, it won't perform its proper function.

Which of the following is not an appropriate unit for momentum?

A. g • cm/min

B. g • m/S

C. km • m/S

D. kg • m/hr

Answers

Answer:

Option C us correct.

km • m/S

Explanation:

This is because momentum is result of mass and velocity of an object. Momentum is a vector quantity that is it has magnitude and it's direction is in form of three dimensional.

From the option C, kilometer there is not a unit for mass or velocity it it is a unit for distance, therefore it is incorrect.

need help with this dont know

Answers

Answer:

I believe its A: determining how cells could develop from nonliving matter

2. Explain the relationship between genetic variation and an organism's ability to adapt to its environment,

Answers

Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation. Some new alleles increase an organism's ability to survive and reproduce, which then ensures the survival of the allele in the population.

How many PAIRS of chromosomes are in a human egg cell?

Answers

Answer:

23 pairs, 46 chromosomes in total.

Explanation:

Millicent encountered this organism while walking in the forest. It grows on dead trees, consuming the detritus left by other decomposers. What term best describes this organism?:
A
saprotroph

B
detritivore

C
predator

D
scavenger

MULTIPLE CHOICE

Answers

Answer:

A. Saprotroph

Explanation:

A saprotroph is described as an organism that gains nourishment from organic matter that has started to decay.

As per the situation, the organism that grows on dead trees, consuming the detritus left by another decomposer are saprotroph.

What is a saprotroph?

Saprotroph, also called saprophyte or saprobe, are organism that grazes on the nonliving organic matter known as debris at a microscopic level.

Bacteria, fungi, etc are examples of saprotrophs.

Thus, option "A" saprotroph.

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Explain mendel's experiment with peas on inheritence of characters considering only one visible contrasting character.
Ples answer in making points, it is for 5 marks.

Answers

➜ Mendel conducted breeding experiments with garden peas:

[i] He studied plants (pure) of a tall/short varities.

[ii] He crossed them and obtained F1 progeny.

[iii] He found that F1 progeny was all tall plants.

[iv] He selfed the (hybrid) plants if F1 progeny.

[v] He found that in F2 progeny there were tall as well as short plants.

[vi] The three quarter plants were tall and one quarter was short.

(or any other contrasting character may be taken).

Note: Here, F1 means First fillial generation and F2 means Second fillial generation.

Mendel selected garden pea for his breeding experiment because of its contrasting characters such as height of the plant, yellow or green seed, round or wrinkled seed shape. ... Then he allowed the hybrid plants of F1 generation to self-pollinated. In F2 generation all the progeny were tall as well as short plants...We used to take this character, we may choose different.

The image, in which A represents a gene, shows a harmless mutation that has occurred in a species' genome. Which is the most
plausible way that this mutation may eventually benefit the species?

A)
Multiple copies of genes increase gene expression and protein synthesis,
improving fitness

B) One copy of the gene may mutate further and begin to function differently
from the original.

C) Individuals with different copy numbers of the gene will not be able to
mate, resulting in speciation.

D) Individuals with the mutation are not able to produce offspring and will be removed from the gene pool.

Answers

Answer:B

Explanation: I took this test

One copy of the gene may mutate further and begin to function differently from the original is the most plausible way that this mutation may eventually benefit the species.

What is Mutation?

A mutation is a change to an organism's Genetic sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.

Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.

Our cells constantly undergo mutations, yet surprisingly few of these have an adverse impact on our health. A mutation is never so advantageous in real life.

Therefore, One copy of the gene may mutate further and begin to function differently from the original is the most plausible way that this mutation may eventually benefit the species.

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how would you describe a phospholipid?

Answers

Answer:

The answer would be Hydrophobic tail and a hydrophilic head. Just some background info, this is located in the cell membrane and the cell membrane is made of up something called the Lipid Bilayer. The word "bi" means 2, so it comprise of 2 layers of phospholipids. These 2 layers of phospholipids are called hyrodrohpbic and hydrophilic. The word "phobic" means fear, so they hydrophobic molecules are NOT attracted to water. Hydrophilic molecules, however, ARE attracted to the molecules.

Hope this helps!

4) Complete the statement below showing the relationship between chromosomes,
genes and DNA.

Answers

Histone proteins form the chromosomes when the DNA is inserted into the active sites of the proteins.

How many sheep were required to create Dolly?

Answers

Answer:

Explanation:

Answer:

The answer is 6 lambs

Explanation:

That's what I got at least

True or false: autosomes are sex chromosomes

Answers

Answer:

True is your answer

Explanation:

An autosome is any of the numbered chromosomes, as opposed to the sex chromosomes. Humans have 22 pairs of autosomes and one pair of sex chromosomes (the X and Y). ... That is, Chromosome 1 has approximately 2,800 genes, while chromosome 22 has approximately 750 genes

Answer:

Its true!

Explaination:

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They swim from ice floe to ice floe in search of seals and walruses. However, climate change has caused the polar bears hunting habitat to shrink in size. Ice floes are smaller, farther apart and farther from shore, making it necessary for polar bears to swim great distances in their hunt for food. These long journeys are dangerous. An Alaska Science Center study found that bear cubs swimming after their mothers had a 45% death rate.The length of season in which polar bears can hunt has also decreased by almost three weeks in the past twenty years. The reason is that the ice sheets are freezing later and melting earlier. The shorter time for food hunting has caused weight loss and poor health in the polar bears. Their populations have dropped 20 to 40 percent in most areas.Some people argue that polar bears will adapt to a new lifestyle, eating alternative foods, such as dolphins trapped by ice pockets or Arctic goose eggs. But, according to Karyn Rode, a wildlife biologist in Alaska, these occasional creative meals arent going to be enough to save all of the polar bears.We may lose the polar bear, the wildest creature of the Arctic, because of habitat loss caused by climate change. What can we do? Join the World Wildlife Federation, or Polar Bears International, and send an email to your local congressperson, urging him or her to fight climate change and protect polar bears.**Which sentence in the opening paragraph is the author's claim?**A. If the lion is the king of the jungle, then the polar bear is king of the Arctic.B. Polar bears are majestic, powerful creatures that capture our imagination and are a living definition of wild.C. Unfortunately, polar bears habitat is changing so much that they may not survive in the wild beyond this century. What's the role of the household in a closed economy A chemist made six independent measurements of the sublimation point of carbon dioxide (the temperature at which it changes to dry ice). She obtained a sample mean of 196.64 K with a standard deviation of 0.66 K. 1. Use the Students t distribution to find a 95% confidence interval for the sublimation point of carbon dioxide.2. Use the Student's t distribution to find a 98% confidence interval for the sublimation point of carbon dioxide. 3. If the six measurements had been 196.35, 196.32, 196.4 198.02, 196.36, 196.39, would the confidence intervals above be valid? Explain. factorise fully 24squared + 18x Un da de compras El sbado pasado mi hermano y yo (1) nos(despedirse) ____________________ de mi madre temprano y fuimos de compras. Despus de dos horas en la tienda de ropa, mi hermano (2)(conseguir) _________________ una sudadera y una gorra. 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