13. Which of the following is not required by animals to control body temperature? A. Animals must switch between ectotherm and endotherm methods. B. Animals must be able to get rid of excess heat when temperatures increase. C. Animals must be able to conserve heat when temperatures drop. D. Animals must find a source of heat.

Answers

Answer 1
Answer: C. Animals must be able to conserve heat when temperatures drop.
Answer 2
Answer: I would say D probably

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Suppose that a species of toads is introduced into a new environment in an attempt to reduce the populations of insects. The toad has no natural predators in the new environment. The toad population would most likelyA) Increase exponentially. B) Increase logistically.C) Decrease rapidly and die out.D) Remain the same.
Yeast and truffles are _____ fungi. club sac zygote-forming chytrid imperfect
Which type of muscle filaments are arranged in a disorderly manner?
Jane is observing a cell under an electron microscope. She identifies an organelle having an outer and an inner membrane. She also notices that the outer membrane is smooth while the inner one is highly folded. Which organelle is Jane observing?Select one of the options below as your answer:A) MitochondriaB) Golgi bodiesC) Nucleus
What is the average salt content of seawater as measured in parts per thousand (ppt)

"Proteinuria occurs when the filtration membrane becomes leaky, allowing proteins to cross. This impacts the blood colloid osmotic pressure by ____________________ the osmolarity gradient between the blood and filtrate, thereby ________________ the strength of this pressure."

Answers

Answer:

Proteinuria occurs when the filtration membrane becomes leaky, allowing proteins to cross. This impacts the blood colloid osmotic pressure by decreasing the osmolarity gradient between the blood and filtrate, thereby reducing the strength of this pressure.

Explanation:

Proteinuria is the medical term that describes the presence of proteins in the urine.Proteins, in normal conditions, are not capable of filtrating through the membrane but, in the presence of a disease, this is possible.

Proteins are responsible for the colloid osmotic pressure in the blood vessels, so when proteins get filtered, this pressure decreases and so does the osmolarity gradient between the blood and filtrate. The decrease in osmolarity gradient also produces a decrease of the colloid osmotic pressure because the strength of the pressure is as big as the gradient between the two compartments.

Is Centrosome a part of the Cytoskeleton

Answers

Answer:

yes it is I have to write 20 letters but don't know What to put but yes it is apart of the cytoskeleton

Answer:

yes it is becaiuse

"Cytoskeleton is a complex network of 3 types of protein filaments. They are microtubules, microfilaments and intermediate filaments. Microtubules are dispersed throughout the cytoplasm but are also found as part of organelles such as centrioles that play vital role in motility."

What is the difference between diploid and haploid cells?

Answers

Answer:

In organisms during cell division, DNA is present in packaged structure called "chromosomes" with a constriction point called the centromere giving X-shape to the chromosomes. This forms a complete set of chromosome.The number of chromosomes present in the nucleus of the cell is known as ploidy number represented by "n".

Based on the number of chromosomes, cell is usually divided into: Haploid cell and diploid cell.

Haploid cells (n): are the cells with only one complete set or chromosomes like gamete cells while

Diploid cells (2n): are the cells with 2 sets or pair of chromosomes like somatic cells.

A diploid cell contains two complete sets of chromosomes, while a haploid cell only one set.

The curving of plants toward light is an example of: Which of these is not a recognized class of plant hormone? nyctinasty
geotropism
seismonasty
phototropism

Answers

The answer is Phototropism.

Justin is looking at two chromosomes that have identical alleles for a particular trait. These chromosomes would be considered "____" chromosomesA. heterozygous
B. homozygous
C. petit
D. queue

Answers

The correct option is B.

Chromosomes can be classified as either homozygous or heterozygous based on the similarities between two alleles. A homozygous chromosome refers to a chromosome that have identical alleles on both homologous chromosomes. When the trait is dominant, it is represented by two capital letters; when the trait is recessive, it is represented by two lower case letters.

When the identical alleles are present on two chromosomes for a particular trait, the chromosomes are said to be homozygous.  

Further Explanation:

The extent to which the genetic sequence of both the copies of a gene is the same is called zygosity. It can also be considered as the percentage of similarity the alleles have in an organism. The eukaryotes are mostly diploid in nature which implies that they contain chromosomes in a matching pair. In a diploid organism, the homologous chromosomes are present on the same loci but the two chromosomes can differ in the sequences at the loci. When both the alleles are the same in a diploid organism, then the organism is said to be homozygous. On the other hand, if the alleles differ in the nucleotide sequence, they are called heterozygous.

Different individuals have different DNA sequences for the same gene. These differences in the sequences form different forms of the same gene called alleles. Some genes have just one allele as any deviation in the allelic sequence might be fatal, while some other genes have more than one allele. The frequency of these alleles varies among a population. Two alleles might have an equal distribution in the population or one allele might be very common, making the other allele rare. The alleles are inherited from each parent which pair up in the zygote. The zygosity describes whether the two alleles are the same or different in their DNA sequences.

When two chromosomes contain the same copies of the alleles, they are called homologous chromosomes and the organism is termed as homozygous. An individual can be homozygous-dominant or homozygous-recessive depending on whether it has dominant or recessive copies of the alleles. The homozygous-dominant individual will express the dominant phenotypic traits while the individual who is homozygous-recessive will have a recessive trait.

Learn More:

1. Learn more about meiosis brainly.com/question/1600165

2. Learn more about the process of molecular diffusion in a cell brainly.com/question/1600165

3. Learn more about human sperm and egg cell brainly.com/question/1626319

Answer Details:

Grade: High School

Chapter: Zygosity

Subject: Biology

Keywords:

zygosity, homozygous, heterozygous, homologous chromosomes, genes, allele, DNA, nucleotide sequence, dominant, recessive, trait.  

The classification system developed by Linnaeus in the early 1700s divided living organisms into plant and animal kingdoms. Today, that has been expanded into five kingdoms. Which of the following inventions was most responsible for creating the need for the additional three kingdoms and why?

Answers

How did Linnaeus classify living organisms in the 1700s?

In Systema Naturae, Linnaeus classified nature into a hierarchy. He proposed that there were three broad groups, called kingdoms, into which the whole of nature could fit. These kingdoms were animals, plants, and minerals. He divided each of these kingdoms into classes.

Why did Linnaeus developed a classification system?

It was developed by Swedish botanist Carolus Linnaeus in the 1700s. He tried to classify all living things that were known at his time. He grouped together organisms that shared obvious physical traits, such as number of legs or shape of leaves.

Living things are divided into five kingdoms:

  • animal
  • plant
  • fungi
  • protist
  • monera.

Learn more about  Linnaeus here: brainly.com/question/14037080

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Microscopes made it possible to learn more about single-celled organisms.