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salantis [7]
3 years ago
6

When examining rock layers, where do you find the oldest material? Why is this the case?

Biology
1 answer:
Basile [38]3 years ago
5 0

Answer:

At the very bottom

Explanation:

When examining a cross section of rock layers, the oldest layer is on the bottom. This is because over time, newer rock layers continued to form on top of the oldest one.

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Use the chart above to determine which substitution mutation has the potential to cause more damage? Highlight your answer. (2pt
icang [17]

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of the chart referred to in the question. However, what appears to be the case is that the three nitrogenous bases represent codons (and the missing chart is the codon chart). The mutation that has the potential to cause more damage will be the one that would change the amino acid formed from the codon change.

A. CAU to CAC: The codons CAU and CAC both form the amino acid histidine and thus is not expected to cause a major damage.

B. UGU to UGC: The codons UGU and UGC both form the amino acid cysteine and thus is not expected to cause a major damage.

C. UCU to UUU: <u>Codon UCU forms the amino acid serine while the codon UUU forms the amino acid phenylalanine</u>. Thus, this eventual change in the amino acid formed has the potential to cause a major damage and thus option C is the correct option.

NOTE that a codon is a sequence of three DNA/RNA nucleotides that corresponds to a single amino acid.

8 0
2 years ago
Why crossing over is an important process for genetic variation
DerKrebs [107]

Answer:

so that the genetic variations are not directly exact

Explanation:

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3 years ago
Marc checked in to the urgent care with symptoms of fever, sore throat and fatigue. His strep test turned out to be positive. St
nikitadnepr [17]

ANSWER:

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These activities will only occur on the activation of innate immune responses through workout between pattern recognition receptors (PRRs) with streptococcus derived pathogen-associated molecular patterns (PAMPs).

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Neutrophils then produces antimicrobial proteins, reactive oxygen species (ROS) and sometimes neutrophil extracellular traps (NETs), all these for the bacterial infection control.

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F a 25-year-old woman visits a community health care center to obtain a gynecological examination and birth control pills, these
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Hello There!

A 25 year old woman visits a community health care center to obtain a gynecological examination and birth control pills, these activities are termed Primary Health care.

Hope This Helps You!
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- Hannah ❤
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3 years ago
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