What do eukaryotic cells have that prokaryotic cells do not?

Answer:

B. Damage results in the inability of the body to differentiate between voluntary and involuntary movement

Explanation:

Answer:

b

Explanation:

Answer:

I think It's A. Hope it helps! :)

Explanation:

Answer:

yes they do

Explanation:

they do because they don't want to be big chungus anymore, they want to be a skinny queen

Answer:

They have adapted to it

Explanation:

Answer:

Some flowering plants have leaves that lack venation even though the stems and roots have vascular bundles.

Explanation:

Venation refers to the arrangement of the veins in the leaf of a plant which are involved in the transport of material in the plants.

The xylem present in leaves transports water to the leaf whereas phloem transports sugar from the leaves to different parts of the plants. In angiosperms, no plants are known whose leaves lack the veins but stem and root possess the vascular bundles.

Monocot is characterised by their parallel veins whereas dicots possess reticulate veins. Also, the compound leaves possess one of the three types of venation that are palmate, pinnate and dichotomous.

Since no angiosperm posses, veinless leaves, therefore, is the correct answer.

Answer: Insertion, Deletion

Explanation:

The frameshift mutation can be defined as a genetic mutation that is caused by the deletion or insertion of the DNA sequence or base pairs that shifts the sequence to be read. As a result of this the abnormal proteins are produced along with incorrect amino acid sequence that either shorter or longer than the normal protein.

Answer:

1) F, 2)True

Explanation:

1) autoclave uses steam

2) bleach dilute is 1:10

1. It is false that In a standard autoclave procedure dry heat is used combined with high pressure.

2.  It is true that Household bleach is routinely used in dilution 1:10

1. In a standard autoclave procedure, moist heat, not dry heat, is used in combination with high pressure. Autoclaves use steam under high pressure to achieve sterilization by destroying microorganisms and their spores. The high-pressure steam provides effective heat transfer and penetration, ensuring the sterilization of the items being processed.

2. Household bleach is often used in a dilution of 1:10, meaning one part bleach is mixed with nine parts water. This dilution is commonly recommended for various household cleaning and disinfection purposes. It helps to ensure effective disinfection while reducing the potential harmful effects of concentrated bleach.

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Hello There!

Answer:

B. Gulf stream

Explanation:

Great Britain would have a much colder climate than it does if not for the gulf stream.

Answer:

The experiment supports the hypothesis that maggots arise only from eggs laid by adult flies; that is  only from reproduction and development.

Explanation:

The objective of this experimental set up by Francesco Radi  was to demonstrate the concept of spontaneous generation. He concluded that, Maggots are not spontaneous generated from rotten meats, rather they are products of eggs laid by houseflies who visited the rotten meat to lay eggs. The maggots (larva) are products of complete metamorphosis, from egg to larva to pupa and adult. This is an indication that, new organisms are not formed form spontaneously, but are products of well-defined process of reproduction and development which in this case is a  complete metamorphosis.

Based on this premise he concluded that, if maggots were products of  laid eggs, then they should appear only  when rotten meat is exposed to  open air.However,if they are f products of spontaneous generation they should appear irrespective of  the meat exposure to air or not.

Answer:

They can be found in several trophic levels, as they are related with several trophic level, hence, they cannot be placed on a specific trophic level.

Explanation:

A trophic level is a specific position occupied by a group of organisms on a good chain in relation to their nutrition.

Dentrivores feed on the waste of other organisms and cannot be really placed on a specific trophic level, likewise decomposers, of which they feed and decompose the body of organisms.

Omnivores feed on both plants and animals, which includes producers and consumers. Placing omnivores on a specific trophic level would not be really straightforward also.

Answer and Explanation:

b. stratum corneum: 5. layer including scalelike dead cells, full of keratin, that constantly slough off.

The most superficial epidermal layer conformed of squamous, plane, thin cells with keratin in their cytoplasm, that are continuously released. These cells are replaced by new cells that have the same destiny.      

d. stratum lucidum

: 1. layer of translucent cells in thick skin containing dead keratinocytes

Also known as the transparent layer, is only located in the thicker parts of the skin, such as the hands´ palms and the feets´ soles. This layer is so thin that the cells´ edges and some ties their nucleus can not be identified. Keratinocytes are diaphanous and are grouped together. They lack a nucleus and the cytoplasm is filled with a gelatinous substance, eleidin, which will transform into keratin.

b. stratum corneum and d. stratum lucidum 2. two layers containing dead cells.

c. stratum granulosum: 6. layer named for the numerous granules present.

These layer cells contain granules filled with keratohyalin that is needed for keratin production. These cells are arranged in two to four layers, and they begin to degenerate. This is why they show high lysosomes enzymes concentration. This is also the layer where it begins keratinization.

e. stratum spinosum: 10. layer that secretes a glycolipid that prevents water loss from the skin.

8 to 10 irregular cell layers. These cells are rich in DNA necessary for proteinic synthesis that ends in keratin production, and Langerhans cells that belong to the immunity system. This stratus is also known as "Malpigio stratum". It also produces a glycoprotein that helps to prevent water loss.    

a. stratum basale 4. epidermal layer exhibiting the most rapid cell division.

                             7. location of melanocytes and tactile epithelial cells.

Stratum basale is the innermost germinative, single, basal layer of the epidermis composed of basal cuboidal-shaped cells. These cells are the precursor of keratinocytes, this is why this layer is also called germinativum. In this basal layer, there are also Merkel cells as well as melanocytes.  The former associated with nerve fibers, transmit part of the touch, and the latter, form the pigment responsible for skin coloring and tanning, melanin.

f. papillary layer: 3. dermal layer responsible for fingerprints.

This stratum is a thin superior layer in the dermis. It has conjunctive tissues and blood vessels that nourish the skin and helps to control the temperature. It´s surface forms papilla that increases the mechanical union between dermis and epidermis.        

g. reticular layer: 9. deep layer of the dermis

The inner and thicker layer of the dermis. It is characterized by it´s thick, irregular bundles of collagen fibers and elastic fibers. These are not randomly oriented but forming the regular skin tightening lines known as Langer lines.  

h. epidermis as a whole: 7. location of melanocytes and tactile epithelial cells.

Composed of a plane stratified keratinized epithelium that constantly grows and maintains a normal thickness by the process of peeling. The Epidermis is made up of five cell layers, which have different functions: Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.        

i. dermis as a whole:  composed of conjunctive dense tissue that provides support, resistance, and thickness to the skin.        

Answer: Upwelling

Explanation:

Upwelling is a process of movement of dense, cold and nutrient rich water from the bottom of the ocean to the surface layers due to wind currents. This process replaces the warm and nutrient deficient water from the surface.

This process is useful for the growth of phytoplanktons and other sea plants growing in the surface layer of oceanic water.

Answer:

to protect the cell from it's surroundings

Explanation:

the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells

Explanation:

The primary function of the plasma membrane is to protect the cell from its surroundings.

Sorry if the ans is wrong

Answer:  

seems you forgot the "followings" but here are some known limiting factors

Explanation:

   Exercise,Physiology, Mindset, Nutrition and Genetics.

Answer:

a condition, an action, or a relationship.

Explanation:

Answer:

The correct answer is option b) "the number of chemical bonds between the molecules".

Explanation:

Chemical bonds are the forces that enable the formation of compounds. The number of chemical bonds is a determining factor to know if an interaction will be transient of stable. The more chemical bonds the more stable an interaction will be. Few chemical bonds between molecules makes an interaction unstable and easy to break, enabling transient interactions that are key to certain biological pathways.

Answer:

C. WT 5-TAGTCGAAGCTTAGGCATCT-3

Mutant 5-TAGTTGAAGCTTAGGCATCT-3

Explanation:

In the wild type, the DNA sequence encodes the following aminoacidic segment: SRSLGI; while the mutant form has a stop codon in the second codon (TGA). A stop codon is a trinucleotide sequence in the messenger RNA (mRNA) that indicates a stop signal in protein synthesis. There are three types of stop codons: UGA, UAG and UAA, where U represents Uracile in the mRNA instead of Thymine in the DNA sequence.

Representation:  

C. WT 5-T AGT CGA AGC TTA GGC ATC T-3 >> 5'3' Frame 1 = SRSLGI

Mutant 5-T AGT TGA AGC TTA GGC ATC T-3 >> 5'3' Frame 1 = S-, where - represents a stop codon (TGA) and therefore it is the end of the protein.

Answer:

A wolf...........

.......................

Answer:

I believe the answer is heart

Answer:

Tolerance

Explanation:

Tolerance is the capacity of an organism to survive changes in certain environmental and biochemical conditions. It has to with changes an organism is able to withstand when is subjected to certain factors which can biotic or abiotic.

For example, in the consumption of alcohol, tolerance can occur when there is a fast elimination of alcohol from the body system. This is usually as a result of the activation of a group of enzymes that is responsible for the metabolism of alcohol in excessive alcohol drinkers. The activation of this enzymes increases the catabolism of alcohol and hence reduces the active time within the body, hence reducing the time by which alcohol intoxicates.

Answer:

It could be a Staphylococcus or also called Staphylococcus, due to the disposition it presents.

Explanation:

Staphylococci are coconuts (rounded shape) that unite in the form of a bunch of grapes, this is characteristic of them.

It could become a Staphylococ Aureus, since these are usually associated with the most frequent infections in humans, but the possibility that it is another type of the same bacterial family is not ruled out.

Answer:

Find the description below in the explanation section

Explanation:

The body system regulates the blood sugar level via the hand-in-hand working of insulin and glucagon hormones, both produced by the Pancreas. After a meal, the food undergoes digestion and is broken down into glucose, which is absorbed into the bloodstream. Insulin hormone is released by the pancreas (stimulated by a negative feedback) when the sugar level of the blood increases. This secretion of insulin causes cells to absorb glucose as source of energy, while liver and muscle cells store some of the excess blood glucose as GLYCOGEN.

However, after about 6 hours of taking the meal, the blood sugar (glucose) level must have decreased. This triggers the secretion of Glucagon hormone by the Pancreas. Glucagon hormone, acts in an opposite manner as Insulin hormone, by causing the stored GLYCOGEN in the liver and muscle cells to be converted back to Glucose in order for cells to make use of it.

This continuous process occurs and it is how the body regulates the blood glucose levels.

Answer:

The correct answer is "The similar ordering of homeotic genes in animals, both vertebrate and insect, is due to ancient homology".

Explanation:

The missing options of this question are

a. Homeotic genes show that insects and vertebrates are closer relatives than the traditional classification system indicates.

b. The similar ordering of homeotic genes in animals, both vertebrate and insect, is due to ancient homology.

c. The similarity is a coincidence, not documented in other invertebrates and largely a result of random mutations.

d. Homeotic genes of different animal lineages might be ordered in a similar fashion, yet their sequences are completely different.

The correct answer is option b. "The similar ordering of homeotic genes in animals, both vertebrate and insect, is due to ancient homology".

Ancient homology, is a concept proposed by Charles Darwin that explains that species have homologous structures because they share a common ancestor. This explains as well why the ordering of some homeotic genes on vertebrate chromosomes parallels the ordering of homeotic genes on fruit fly chromosomes. Even though vertebrates are not as evolutionary close to fruit fly as other species, they share an ancient common ancestor as well. This same phenomena explains other homologies seeing in species, such as the adaptive mimetic diversity across butterflies.

The provided question has marked options incorrectely the correct order as follows:

A) Expose putative DNA repair mutant plants to ionizing radiation L and see if they survive less well than wild-type plants.

B) Measure the amount of post-translational processing that occurs in the putative DNA repair mutant plants.

C) Measure the somatic mutation rates for the putative DNA repair mutant plants.

D) Expose the putative DNA repair mutant plants to a deaminating agent and select those that have a decreased mutation rate.

E) Measure the germline spontaneous and induced mutation rates for the putative DNA repair mutant plants.

Answer:

The correct answer is: A), C) and E)

Explanation:

The breeder wants to isolate the mutants in tomatoes that are defective in DNA repair, to identify such plants breeder should follow these methods as they will allow best to identifying the defective tomatoes-

Measure the somatic mutation rates for the putative DNA repair mutant plants.

Measure the germline spontaneous and induced mutation rates for the putative DNA repair mutant plants.

Expose putative DNA repair mutant plants to ionizing radiation L and see if they survive less well than wild-type plants.  This will allow the breeder to see and analyze the ability of DNA repair in tomatoes

Answer:

Animals are multicellular eukaryotic organisms that form the biological kingdom of Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development.

Explanation:

Scientists have recently estimated that there are approximately 8.7 million species on Earth. They believe that 1-2 million of those species are animals.

Answer:

Explanation:

From the given information:

Each of two parents has the genotype brown divided by red​

So ;

The man's genotype is : [tex]\mathbf {\dfrac{Brown}{Red}}[/tex]

The woman's genotype is : [tex]\mathbf {\dfrac{Brown}{Red}}[/tex]

This [tex]\mathbf {\dfrac{Brown}{Red}}[/tex] genotype consist of the pair of alleles that determine hair color​

Now; we are given an assumption that:

if the child has at least one brown ​allele, that color will dominate and the​ child's hair color will be brown.

i.e Brown allele is dominant to Red allele

(a) List the different possible outcomes.

The cross between :

[tex]\mathbf {\dfrac{Brown}{Red}* \mathbf {\dfrac{Brown}{Red}}}[/tex] will produce the following offsprings which is the different possible outcomes.

[tex]= \mathbf {\dfrac{Brown}{Brown} \ \ : \ \ \mathbf {\dfrac{Brown}{Red}} \ \ : \ \ \mathbf {\dfrac{Red}{Brown}} \ \ : \ \ \mathbf {\dfrac{Red}{Red} }}[/tex]

(b) . What is the probability that a child of these parents will have the red divided by red ​genotype?

The probability that the child of  these parents will have [tex]\mathbf {\dfrac{Red}{Red} }}[/tex] is one out of four

i.e

= 1/4

= 0.25

(c) What is the probability that the child will have brown hair color​.

We are being told that;  if the child has at least one brown ​allele, that color will dominate and the​ child's hair color will be brown.

i.e Brown allele is dominant to Red allele

Thus; from above we will see that three of the offsprings have at least one brown allele;

Thus; the probability  that the child will have brown hair color​ is = 3/4

= 0.75

Answer:

Explanation:

Because we need a lot of cells and if they were big only a small about would fit.

Answer: True it is necessary

Answer:

True

Explanation:

Answer:

A.

Explanation:

because the climax community is composed of species beat adopted to average conditions in that area

When the community climax in an ecosystem has only a single type of climax, the development of the climax community is controlled by the climate of that region. Option A is correct.

The climate of a region is the most important factor that controls the development of a climax community. The climate determines the temperature, precipitation, and other abiotic factors that influence the growth and survival of plants and animals.

In a region with a single type of climax community, the climate is relatively uniform and there is little variation in the abiotic factors. This means that the same species of plants and animals will be able to survive and thrive in the region, regardless of the specific location. The life forms, soil texture, and pioneer community can all influence the development of a climax community, but they are not as important as the climate. Option A is correct.

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