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Robert Hooke was the first person to observe cells. He observed these cells in (a) a piece of cork.

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Robert Hooke was the first person to observe cells. He observed these cells in a piece of cork. Thus, option A is correct.

Cell cycle is defined as cycle in which cell produces, grows and divides. The cell cycle has mainly three steps the first one is G1 phase in which the size of cell increases, S phase synthesis of DNA takes place and the third step is G2 phase in which cell ready to divide.

Cell is defined as the base of life as it is the structural as well as functional unit of life. Cell is made up of pre existing cells and the cell contain various cell organelles such as mitochondria, endoplasmic reticulum, ribosomes, golgi appratus, nucleus, and cytoplasm.

Basically, cell is of two type one in prokaryotic and another one is eukaryotic. The prokaryotic cell is known as pre mature cells as they do not contain cell organelles and eukaryotic cell are known as advanced and developed cells as they contain several cell organelles.

Therefore, Robert Hooke was the first person to observe cells. He observed these cells in a piece of cork. Thus, option A is correct.

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Answer:

Hopefully this is correct!! Not sure...

Explanation:

4) D

5) A

6) C

A group consisting of only the wood, american, cave, and desert

cockroaches being a monophyletic group is True.

This is the type of groups which consists of organisms which have a

common ancestor.

The organisms mentioned above are all types of cockroaches which

means they emanated from a common ancestor and makes it valid.

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Answer:

C. crossing over chromosomes

Explanation:

Process of Meiosis. A man produces sperm and a woman produces eggs because their reproductive cells undergo meiosis.which cause Crossing Over.

Answer:

C. Maintain a constant internal environment

Explanation:

Homeostasis is keeping an internal environment stable.

In the general population where  1 in 300 individuals is a carrier for Tay-Sachs disease, while 1 in 30 individuals of Ashkenazi Jew descent are carriers. Tay-Sachs also affects 1 in 30 individuals with French-Canadian ancestry then in this condition , 1 in 2 will get the disease that is there is 50% possibility.

It is an autosomal recessive disorder.

The chances where the two two individuals having a child with Tay-Sachs if both individuals are not of Ashkenazi or Franch-Canadian descent is 25 % that is the child will not have any disease.

The chance where  the child inherits a mutated one  from one parent and becomes a carrier, but will not have  the condition themselves. 1 in 4 (25%) chance that means  the child inherits a faulty gene from both parents and develops Tay-Sachs disease.

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Answer: igneous, sedimentary, and metamorphic.

Explanation: Igneous rocks form when molten rock

Sedimentary rocks form  when particles settle out of water or air, or by precipitation of minerals from water

Metamorphic rocks form under extreme heat or pressure

Answer:

The second arrow (the middle one)

Answer:

c. Bile and lipase

Explanation: is correct

Answer:

true

Explanation:

Answer:

a. Large intestine

Explanation: is correct

Answer:

Large Intestine

Explanation:

hope it helps

Answer:

D, Isosceles and right

Explanation:

you already know it's right bc of the little 90 degrees box so the only two right answers could be A and D but its not A bc all the sides aren't the same length so its D. Hope this helped! :)

Answer:

His red blood cell count is low

A classic cold kitchen is a type of kitchen that indulges in cooking with no heat. So classic cold kitchen ingredients are therefore ingredients that do not require cooking with heat.

Thyme, basil, dill, marjoram, and chives are cold kitchen ingredients harvested directly from a kitchen garden are called fresh herbs.

Thyme, basil, dill, marjoram, and chives are some fresh herbs ingredients that would not require heat in cooking and are added to add flavor to foods.

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Answer:

species ,epithet

Explanation:

because

In the modern system of biological classification the genus and species names are used for the scientific name of organisms.

The modern system of biological classification is the classification that involves the naming and arrangement of organisms in groups according to a hierarchical order.

In this type of classification, organisms are given scientific names based on their genus and the species.

This pattern of double naming is called binomial nomenclature consisting of two names.

Therefore, in the modern system of biological classification the genus and species names are used for the scientific name of organisms.

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Answer:

NEURONS

Explanation:

It can be sensory or motor neurons

Answer:

Viruses are too small and simple to collect or use their energy – they just steal it from the cells they infect. Viruses only need energy when they make copies of themselves, and they don't need any energy at all when they are outside of a cell.

Explanation:

Answer:

yes and no

Explanation:

Viruses only need energy when they make copies of themselves, and they don't need any energy at all when they are outside of a cell.

Answer:

Waste products such as gums, oils, latex, resins, and so on are stored in plant parts such as barks, stems, and leaves. Plants eventually shed these parts. Orange oil, eucalyptus oil, jasmine oil, latex from the rubber tree, papaya tree gums, and acacia gums are all examples of stored waste products.

Explanation:

Answer:

RNA!

Explanation:

it also goes through interphase

Answer:

Here is your answers hope I helped!

Explanation:

Here are some reasons why we need to sleep.

If you don't sleep enough or sleep well it's going to cause types of headaches, insomnia, or other types of syndromes etc, this could also lead to stress and anxiety.

If you sleep well your body and muscles well be healthy and relaxed, it also depends how much hours you sleep if you oversleep too much it could led to narcolepsy

Stages

The first stage of sleep, known as light stage sleep, is one of the shortest, lasting five to ten minutes on average. In this stage, the mind and body begin to 'slow down,' causing us to feel drowsy and relaxed.

Stage 2 and stage 3 can have light or deep Slow waves, delta sleep, or deep sleep it depends.

Stage 4 which is the last stage is called the REM or aka rapid eye movement, this stage causes your brain activity to increase and this stage is where you might be dreaming the most.

Answer:

I will make 8 slices....

because I do love it....

it depends on you and ur choice how many pieces of what type of shape you want to have...

Answer:

Structure of gene:

The chemical structure of a gene comprises nucleotides. A part of DNA- genes are made up of A, T, G and C nucleotides

Explanation:

This layered structure can be compared to that of a boiled egg. The crust, the outermost layer, is rigid and very thin compared with the other two. ... The mantle, which contains more iron, magnesium, and calcium than the crust, is hotter and denser because temperature and pressure inside the Earth increase with depth.

Answer:

The third one is monoeye leggatros, the first one is multieye armituou, the last one is multieye ituous, and the second one is monoeye gastros!!

Explanation:

they’re not in order, but these are the correct answers :))

In order for blood vessels to maintain a steady pressure, there must be a prolonged presence of CALCIUM ions in the smooth muscle cell's cytosol. This ion initiates smooth muscle contraction.

Arterioles are blood vessels that have muscular walls consisting of one or two layers of smooth muscle cells.

Calcium (Ca2+) ions start the contraction of the smooth muscle cells by binding to calmodulin protein and thereby activating myosin.

In consequence, Ca2+ ions act as a secondary messenger that activates calmodulin, stimulating the phosphorylation of the myosin light chain and thus triggering muscle contraction.

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Answer:

a. Sciatic nerve

Explanation: is correct

Answer:

The nucleus

Explanation:

eukaryotic cells have a the nucleus, which means the cells DNA is surrounded by a membrane. Therefore, the nucleus houses the cells DNA