4. When was the first STS mission?
O 1958
O 1969
0 1981

Answer:

4. According to what is observed in the diagram, the maltose (substrate) binds to the maltase (enzyme) to obtain glucose molecules (product), in a process of hydrolysis of the maltose.

5. Three factors that can affect intestinal maltose activity - slowing it down or stopping it - are temperature, pH and substrate depletion.

Explanation:

4. Enzymes, such as maltase, have the function of making a reaction faster and decreasing the activation energy. Maltase is responsible for breaking down a maltose molecule, a dimer, into two glucose monomers, which is a hydrolysis reaction of the bonds that hold glucose molecules together.

5. There are several factors that can cause the decrease or cessation of the activity of an enzyme. Enzymes are activated when substrate is available and work best under ideal temperature and pH conditions. When there are alterations of these factors, the enzyme will reduce or stop the reaction in which it intervenes.

Answer:

the external stimulas of danger

Explanation:

The flight or flight is the natrual intinct when in a dangerous situation, and is everyones go to response

Answer:

c

Explanation:

Answer:

B - Posterior column pathway

The only spinal column that does not cross over as it enters the spinal cord is the posterior column. Instead, the medulla oblongata is where the posterior column transitions. Therefore, option (B) is correct.

The dorsal column–medial lemniscus pathway (DCML) is a sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (position) from the skin and joints. It is also known as the posterior column–medial lemniscus pathway, or PCML.

The only column other than the posterior one to enter the spinal cord without making a crossing is the posterior column. In its place, the posterior column makes a U-turn in the medulla oblongata.

Therefore, option (B) is the correct option.

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#SPJ2

Answer:

OMG I LOVE YOU SOMEONE NEEDED TO SAY THIS!! MUCH LOVE OMG CAN WE PLS BE FRIENDS ❤❤❤❤❤

Answer:

yep we will sure help!

Explanation:

LETS HELP MRBEAST GLOBAL WARMING!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer:

Please find the explanation to this question below

Explanation:

The ATP cycle is the series of reactions involving glycolysis, Krebs cycle and oxidative phosphorylation that produces/synthesizes ATP in living cells. These processes collectively is called CELLULAR RESPIRATION. Glycolysis produces 2ATP molecules, Krebs cycle produces 2ATP while the electron transport chain (oxidative phosphorylation) produces 34ATP molecules.

This cycle of ATP as explained above is an important frequent event in cells because all organisms need energy to carry out their metabolic activities. ATP is the energy-carrying molecule that stores and releases energy for use by the cells, hence, it needs to be produced on a frequent basis.

ATP can be likened to a charged battery ready to release its stored energy. The energy is stored in the phosphate bonds that makes up its structure. When ATP releases its energy, it becomes ADP (Adenosine diphosphate). However, ADP is a reactant in the ATP cycle, which is phosphorylated with an inorganic phosphate (Pi) and catalyzes by ATP synthase to form ATP.

Answer:

1. Chloroplast

2. 38 molecules of ATP

3. orange-red and violet-blue

4. There are half as many chromosomes in egg cells.

Explanation:

1. According to the image 1 in this question, the process of PHOTOSYNTHESIS is being described. Photosynthesis is the process whereby plant cells synthesize their food (sugar) in the presence of sunlight. CO2 and water are used as reactants, while O2 gas is released as shown in the image as gas bubbles. This unique process of photosynthesis occurs in the CHLOROPLAST organelle.

2. Cellular respiration is the way through which living organisms obtain usable energy for metabolic activities. It is the process of breaking down food substances in a series of steps. Cellular respiration occurs in three major stages viz: glycolysis, Krebs cycle and oxidative phosphorylation. Glycolysis produces pyruvate, which may enter the mitochondria for the next stages in the presence of oxygen to yield 38 molecules of ATP.

3. Image 2 shows the absorption spectrum of chlorophyll pigment. As depicted in the image, the highest absorption spectrum of the photosynthetic pigment is at the "orange-red and violet-blue" wavelength. This connotes that the energy used in photosynthesis is most likely obtained from those regions of the spectrum.

4. Meiosis is the process through which gametes are formed. In the process of meiosis, each of the gametes will contain half of the chromosome number as the parent cell. This means that the egg cell (female gamete) produced by a female will contain half as many chromosomes than the somatic or body cell that undergoes the division.

Cellular respiration is the process through which food is broken down to yield energy. It takes place in every living entity.

The correct answers are:

1. Chloroplast

2. 38 molecules of ATP

3. orange-red and violet-blue

4. There are half as many chromosomes in egg cells.

The reasons for the following are:

1. In the first image, photosynthesis is shown. It is the process of producing food in the presence of light and carbon dioxide to give out oxygen. Carbon dioxide and water are reactants, which in the presence of sunlight react and yield oxygen as a byproduct. In the image, the oxygen is given out as bubbles.

2. Cellular respiration is the process occurring in every living organism. It is a process through which organisms obtain energy by breaking down food substances. Cellular respiration involves glycolysis, Kreb's cycle, and oxidative phosphorylation to yield energy in the form of ATP.

3. Image 2 represents the absorption spectra of the chlorophyll pigment. The photosynthetic pigment has the highest absorbance at the orange-red and violet-blue wavelength. This explains that energy required to carry out photosynthesis is obtained from this region of light.

4. Meiosis is a reduction division, in which the number of chromosomes is halved from the parent to daughter cells. The parental gametes consist of half the number of chromosomes, which then fuse to form a diploid zygote. The somatic cells undergo mitotic division, in which the number of chromosomes in the parent cells is similar to the daughter cells.

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Answer:

I think there are 8 holes in a male and 9 holes in a female. Not including pores.

Explanation:

The majority of mutations have neither negative nor positive effects on the organism in which they occur. These mutations are called neutral mutations. Examples include silent point mutations. They are neutral because they do not change the amino acids in the proteins they encode.

Answer: The tissue structure of the liverworts restricts them to a type of environment that affects their size.

Explanation:

Nonvascular plants, also called the Bryophytes in Kingdom Plantae, are simple plants that grow in damp places on land and as the name implies, are non vascular plants( that is, they lack vascular tissues). There are three types of nonvascular plants which includes:

--> Mosses

--> liverworts and

--> hornworts.

Liverworts are restricted to a particular size through the type of tissue they have ( non vascular) because it predisposes them to lack conducting vessels like the phloem and xylem found in vascular plants which aids in conducting water and food to various parts of the plants. Also they do not grow tall like the vascular plants because they lack the qualities that will enable them do so, such as roots, stems and leaves.

Nonvascular plants are low-growing, reproduce with spores, and need a moist or damp environment.

Answer:

c

Explanation:

know it

Answer:

A heterogeneous mixture is a mixture where throughout the solution the composition is not uniform. Through definition, a single-phase consists of a pure substance or a homogeneous mixture. There are two or more phases of a heterogeneous mixture.

Homogeneous mixture is a mixture which has uniform composition throughout its mass.Example:-air,saline solution,most alloys and bitumen.Heterogeneous mixture is simply any mixture that is not uniform in composition.Example:-Sandy water,Orange juice with pull,cereal in milk.

Answer:

Albert Schatz

Alexander Fleming

Alice Catherine Evans

Annie Chang

Antonie Van Leeuwenhoek

Carl Woese

Carlo Urbani

Carlos Juan Finlay

Carmen Sanchez

Charles Henry Nicolle

Claire Fraser

Dmitri Ivanowski

Edward Jenner

Elizabeth Bugie

Ferdinand J. Cohn

Fredrick Sanger

George Hirst

Giralamo Fracostoro

Gregory C.B. van Neil

Hans Christian J. Gram

Harold Amos

Hattie Alexander

Howard Ricketts

Ignaz Semmelweis

Ilya Ilich Metchnikoff

Jennifer Doudna

John Snow

John Tyndall

Joseph Lister

Julius Richard Petri

Kary Mullis

Kiyoshi Shiga

Louis Pasteur

Margret Pittman

Martha Chase

Martinus Beijerinck

Max Theiler

Paul Ehrlich

Rebecca Craighill Lancefield

Robert Gallo

Ronald Ross

Ruth Ella Moore

Salvador Luria

Selman Waksman

Sergei Winogradsky

Shibasaburo Kitasato

Stanley Cohen

Thomas Brock

Walter Reed

Wendell Stanley

William Augustus Hinton

Ernest Everett

Answer:

B

Explanation:

The result of meiosis is four different daughter cells.

Meiosis is a type of reductional cell division in which a parental cell divides twice to generate four daughter cells.

In conclusion, the result of meiosis is four different daughter cells.

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Answer:Bryophytes are called amphibians of the plant kingdom because these plants though live in soil but they need water for sexual reproduction.

Explanation:

Answer:

some examples are in a lake, all the stray cats in a city, or all the evergreen trees in a forest. Remember, limiting factors can affect the carrying capacity. Different limiting factors, such as natural disasters or competition, can cause a population size to decrease!

Answer:

BOTH DNA AND RNA

Explanation:

Answer:

hi you wasted one of the answers i had for my question so im returning the favor :)

Explanation:

Answer:

ice

Explanation:

bc ice changes  a solid  to a liquid when it melts

Answer:

I Think...

Explanation:

Each protein has a particular structure necessary to bind with a high degree of ... Others, like titin (a protein found in muscle), are very large Organization of Protein Structure ... This single hydroxyl orientation difference does not allow galactose to bind to hexokinase and thus hexokinase exhibits specificity of binding.

Answer:

In addition to playing this structural role, the cytoskeleton is responsible for cell movements. These include not only the movements of entire cells, but also the internal transport of organelles and other structures

Explanation:

the middle one light blue

Answer:

The middle option

Explanation:

Vertebrates can be mammals, birds, reptiles, amphibians, and fish.

Most fish do have backbones.

Answer: The question is incomplete and the options are not given but here are the options gotten from another websites.

A. Narrow part.

B. Wide part

C. The flow rate are the same in both part.

The correct option is C.

The flow rate are the same in both part.

Explanation:

The flow rate are the same in both because when there is partial blockage at the artery wall, the blood flow speed will reduce or stop, therefore the blockage will be a barrier or hindrance to free blood flow and therefore, both the narrow part and wide part will receive the same level of blood flow because of the blockage and this blockage result in restricted blood flow which in one way or the other hinder oxygen supply to the heart. The blockage deposits can cause a thickened artery wall and when blood flow is restricted it causes chest pain and if it stop it can cause heart attack. Blockage deposits can be as a result of artery wall damage.

Answer:

Shhhhhhhhshehrhh

Explanation:

Jjshhhhhhh

Answer:

Membrane markers allow cells to recognize one another, which is vital for cellular signaling processes that influence tissue and organ formation during early development. This marking function also plays a later role in the “self”-versus-“non-self” distinction of the immune response.

Explanation:

Cells are of two types: eukaryotic, which contain a nucleus, and prokaryotic, which do not. Prokaryotes are single-celled organisms, while eukaryotes can be either single-celled or multicellular.