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lara [203]
3 years ago
10

EARTH AND SPACE SCIENCE ON EDG

Biology
1 answer:
kodGreya [7K]3 years ago
4 0
I’m sorry but do you want me to answer all of these I just need a yes or no I’ll answer in the comments (:
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Which feature is
Yanka [14]

Answer:

C. Coupled reactions establish an electrochemical gradient across a membrane.

Explanation:

  • During cellular respiration in mitochondria, and during photosynthesis in chloroplasts, the electron transport chain requires a proton gradient to pump protons across the membrane by active transport.
  • Protons flow back across the membrane by facilitated diffusion through ATP synthase, which utilizes them to phosphorylate ADP to ATP.
  • This process of ATP synthesis by harnessing the elctrochemicaal gradient geenrated by the diffusion of protons across the biological membrane through ATP synthase is called chemiosmosis.

7 0
3 years ago
If a branch is cut from a tree ,after some hours the stem remains firm explain<br> ?
hjlf

Answer:

The leaves no longer have water, which means that there is little osmotic pressure which keeps it turgid.

Explanation:

The stem still contains water because of the capillary action that occurs. However, since there is no strong attraction, the water cannot be pulled to the leaves.

4 0
2 years ago
1.True or false? Gametogenesis is the same as meiosis?
Lostsunrise [7]

1. False. They are similar, though.

meiosis- A kind of cell division involving having the chromosome number. It is responsible for genetic recombination.

Gametogenesis- It's the process when gametes or germ cells are produced in an organism. They undergo meiosis to form gametes.

2. Spermatogenesis- happens in the testes of males. 4 gametes are produced. Spermatogenesis involves a metamorphosis stage called spermiogenesis. Spermatogenesis produces small, motile spermatozoa

Oogenesis- takes place in the ovary in a female. 1 gamete produced. in oogenesis there is no metamorphosis stage. In oogenesis the ovum is spherical, and isn't motile and is bigger with more food reserves and cytoplasm.

3. Because The one egg cell that results from meiosis contains most of the cytoplasm, nutrients, and organelles.

3 0
3 years ago
Match the time period with the correct layer of fossils (mya = millions of years ago). ITEM BANK: Move to Bottom 175 mya250 mya4
Marrrta [24]

Answer:

0 mya, 175mya, 250mya, 400mya

Explanation:

The substance which highest million year ago should be more in-depth in the soil hence 400mpa should occupy the highest depth below the ground.

3 0
3 years ago
Bacteria convert atmospheric nitrogen to which of the following in the process of nitrogen fixation?
DiKsa [7]

Q1) Bacteria are capable of converting atmospheric N in the form of N2 gas to NH3. this process is known as nitrogen fixation. N2 in the atmospheric form is not usable by other organisms, therefore specialised bacteria such as Azetobacter species are capable of carrying out this conversion from N2 gas into NH3 form that can be used by other organisms 


Q2) Condensation.

Water in the gaseous state or known as vapour state converted to liquid state, process is known as condensation. in condensation the particles in water become more tightly packed and heat energy is removed from these particles reducing their kinetic energy thus becoming liquid state


Q3) 

Transpiration declines

Deforestation is when the number of trees and plants have been cut down therefore numbers have reduced drastically, transpiration is the process in which water is transported through the plant and lost to the environment through evaporation. When the trees and plants have reduced the water lost by way of transpiration is also reduced. This impacts the water cycle as the number of water being cycled in the environment is lesser now.


Q4) the sun

sun is the major source of energy that facilitates the recycling of water in the water cycle. The sun causes water to be evaporated from water bodies and converted to water vapour. This water vapour is then recycled.


Q5) Plants can’t use Nitrogen in the form of N2

N is an essential element needed by plants, however plants cannot use up the atmospheric N2 gas. therefore bacteria are capable of nitrogen fixation that converts N2 gas into forms that can be used up and absorbed by the plants from soil.


8 0
3 years ago
Read 2 more answers
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