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ArbitrLikvidat [17]
2 years ago
9

Which structure in plants allowed the first land plants to survive out of water?

Biology
2 answers:
MatroZZZ [7]2 years ago
6 0
The answer it’s (A) Cuticle
Georgia [21]2 years ago
3 0

Answer:

A

Explanation:

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It is easier to remove an electron from the outer energy level than from one closer to the nucleus
Ivanshal [37]

This is a true statement. An electron closer to the nucleus would be difficult to remove because the electronegativity of the atom would be greater.

7 0
3 years ago
When doing medical research with human subjects, which FOUR limitations are unavoidable?
liq [111]

Answer:

Option B, C, D and E

Explanation:

While conducting research on human being, following conditions must be fulfilled

a) The subject must be made aware of the risk and result of the study

b) Subject must be aware of the study objective, time duration and post study impacts

c) Subject must be compensated for any injury caused during the study

d) Informed consent must be taken from the subject

e) The subject must beware of the possible uncontrollable scenarios. Also the test conducted must be testifiable on human being

f) The ill effects of the study can be anticipated if the result obtained are worthy enough  

Considering the above facts, option B , C, D and E are unavoidable  

7 0
2 years ago
Which component of a virus is lacking in a cell?
m_a_m_a [10]

Capsid is the component of a virus that is lacking in its cell

A capsid is the protein shell that surrounds a virus. Capsids functions by protecting the nucleic acids of a virus while interacting with the host environment. Capsids are made up of many oligomeric structural subunits that contains the protein; protomers. Capsids are generally grouped based on their structure. The common ones are helical and icosahedral.


4 0
3 years ago
Describe the ways by which substances can cross the phospholipid bilayer
kirza4 [7]

Explanation:

Simple Diffusion across the Cell (Plasma) Membrane The structure of the lipid bilayer allows only small, non-polar substances such as oxygen and carbon dioxide to pass through the cell membrane, down their concentration gradient, by simple diffusion.

5 0
2 years ago
Describe the structure of bird eggs and explain what usually happens to the eggs after they are laid
Vladimir79 [104]

Answer

They have polygenic inheritance and are also affected by the environment factor.

Explanation

The trait of height and skin tone are controlled by different genes and are also affected by environmental factors. The skin tone and height within the population is not specific, both have wide ranges varies from high expression of the gene to less or even no expression of the gene. Mostly these factors are mostly affected by inheritance and less by environmental factors.

3 0
3 years ago
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