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blagie [28]
2 years ago
12

I need help with this

Biology
1 answer:
Fittoniya [83]2 years ago
6 0
A. Sister chromatids. B. Homologous chromosomes. C. Meiosis 1. D. Meiosis 2
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If you were making a product of artificial "Grow-Lites" for plants, what color light should
UNO [17]

Answer:

<u>-blue and red light</u>

Explanation:

Plants produce sugars or carbohydrates during the process of photosynthesis. They absorb light energy from the electromagnetic spectrum with pigments within the thylakoid membrane, like chlorophyll a, chlorophyll b.

Chlorophylls are made of ringed molecules chlorine, a hydrogenated form of porphyrin with a magnesium ion bonded to four atoms of nitrogen. Chlorophyll a shows the most absorption of red light  (642 nm) and blue light (372 nm); while chlorophyll b shows the most absorption at 626 nm and 392 nm.  

Different types of chlorophyll sidechains change the molecules' absorption ranges; A's methyl group is bound at carbon 7,  B's aldehyde (CHO) ring is bound at carbon 7.  Both absorb light from orange-red and violet-blue wavelengths. As such, the best light wavelengths for photosynthesis are within the blue and red wavelengths (425–450 nm) and (600–700 nm).

8 0
3 years ago
You are analyzing a human pedigree for a new disease and discover that the disease occurs with the same frequency in both sexes
Natasha_Volkova [10]

Answer:

The correct answer is A. autosomal recessive

Explanation:

In an autosomal disease, the mutation occurs in the autosomal chromosome, not in the sex chromosome. In autosomal recessive disease if both the defected allele from parent comes in the child then only the child would be affected by the disease. If the offspring have single defected allele than he is said to be a carrier.

So as the defect is not in sex chromosome the disease will occur in the same frequency in both the sexes and if parents are carriers which means they are not affected by disease than 25% offspring can have the disease because out of four offspring one can get both the defected allele, one from each parent. So the correct answer is A.

6 0
3 years ago
HELP HELP PLEASEEEEEE
den301095 [7]
The answer is D but I know I helped you
6 0
2 years ago
Since ethnicity is not biologically fixed, self-identification with a particular ethnic group can change through what process?
Anuta_ua [19.1K]

Answer:

Situational Negotiation of Identity

Explanation:

when our claimed or perceived identity varies depending on the context. One among severally culturally distinct groups in a society or region; members share beliefs, values, habits, customs, and norms. You can be one thing or another depending on your setting Minority groups: subordinate groups in society.

7 0
4 years ago
What factors must be considered when deciding where to store nuclear waste?
koban [17]

Answer:

these containers over long periods of time and cause them to leak. Thus, experts have determined that it is best to store nuclear waste containers in dry areas with little rainfall

8 0
2 years ago
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